- Mn (II) complex with AIE property and function of targeting living cell mitochondria as well as preparation method and application of Mn (II) complex
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The invention discloses a Mn (II) complex with AIE property and a function of targeting living cell mitochondria as well as a preparation method and application of the Mn (II) complex, and relates to the technical field of multiphoton absorption materials
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Paragraph 0029-0030
(2021/08/06)
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- Novel yellow- to red-emitting fluorophores: Facile synthesis, aggregation-induced emission, two-photon absorption properties, and application in living cell imaging
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Four novel yellow-to red-emitting fluorophores with a 1-(2-hydroxyethyl) pyridinium core and different electron-donating terminal moieties (N-methylcarbazole, N,N-dibutylbenzenamine, N-methylpyrrole, and 2-methylfuran) were designed and facilely synthesized via the one-step Knoevenagel condensation. All these compounds (HPs) were characterized by 1H NMR, 13C NMR, and HRMS. Their photophysical properties including linear absorption, one-photon excited fluorescence, two-photon absorption, and two-photon excited fluorescence, were systematically investigated in various solvents. And the density functional theory calculations were conducted to analyze the electronic structures of HPs. The two-photon absorption cross-sections (δ) values of HPs measured by the Z-scan technique were determined to be as large as 1354 (1HP-CZ), 4462 (2HP-BA), 836 (3HP-PR), and 2944 GM (4HP-FU) in DMSO. The two-photon action cross-sections (Φ × δ) values of 1HP-CZ and 2HP-BA in H2O measured by the two-photon induced fluorescence method were about 50 GM. 1HP-CZ, 3HP-PR, and 4HP-FU also exhibited good water solubility. Meanwhile, it was found that 2HP-BA exhibited notable aggregation-induced emission characteristic in DMSO/H2O mixture. The aggregate particle size distribution of 2HP-BA was measured by the dynamic light scattering method, and the aggregation characteristic of 2HP-BA was observed by the transmission electron microscopy. Besides, 2HP-BA also exhibited red emission. Then, HPs with relatively low cytotoxicity were used for one- and two-photon excited fluorescence imaging in living HepG2 cells. The results indicate that HPs are potential candidates in the bioimaging field due to their photophysical properties and biocompatibility.
- Dong, Qi-Ji,Cai, Zhi-Bin,Ding, Ling,Luo, Pei-Hua,He, Qiao-Jun,Li, Sheng-Li,Chen, Li-Jun,Ye, Qing,Tian, Yu-Peng
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- 3-hydroxy flavone compound and application thereof
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The invention belongs to the technical field of biological fluorescence analysis, and particularly relates to a 3-hydroxy flavone compound and an application thereof. The compound is particularly a 4-n,n-dialkylamino-3-hydroxy flavone compound, and when the compound is used as a fluorescent dye, the lipid droplet targeting property is better, and a cytoskeleton is hardly colored. When conjugated structures such as a benzene ring and the like are added to the left side of a molecule of the compound, the emission wavelength of the molecule can be greatly prolonged, and fluorescence crossing of the molecule from yellow to red is realized. The compound can be applied to the aspects of dynamic lipid droplet imaging in cells, lipid droplet growth process imaging, adipose tissue imaging, even simultaneous imaging of intramuscular fat and intermuscular fat in skeletal muscle tissues, and the like, and has important application values in the fields of fluorescent dyes, biological fluorescent labels and the like.
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Paragraph 0043; 0047; 0048; 0050; 0055-0057; 0058
(2019/11/28)
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- Aminostyrylpyridinium-salt fluorescent monomer and preparing and application of polymer of aminostyrylpyridinium-salt fluorescent monomer
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The invention relates to an aminostyrylpyridinium-salt fluorescent monomer, a synthesis method of a polymer of the aminostyrylpyridinium-salt fluorescent monomer and application prospects of the water-soluble fluorescent polymer in the field of oil fields. The fluorescent monomer structure is shown as the formula (I) (please see the specification). The synthesis method includes the steps that 4-methylpyridine and alkyl halide are subjected to an alkylation reaction to generate 4-methylpyridine salt, aniline is subjected to a N-alkylation reaction or an acylation reaction and then subjected to a Vilsmeier reaction, an aldehyde group is led in a para-position mode, and finally, the aldehyde group and methyl of the 4-methylpyridine salt are condensated to generate the aminostyrylpyridinium-salt fluorescent monomer. The fluorescent monomer and water-soluble monomers such as acrylamide, acrylic acid, methacrylamide, methylpropanesulfonic acid, N,N-dimethylacrylamide and N,N-diethylacrylamide are subjected to binary polymerization or terpoly polymerization, and a water-soluble fluorescent tracing polymer is prepared. The fluorescent tracing polymer can be applied to concentration detection of the polymer through polymer flooding.
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Paragraph 0041; 0043; 0044; 0047
(2017/07/21)
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- Asymmetrically Substituted and π-Conjugated 2,2′-Bipyridine Derivatives: Synthesis, Spectroscopy, Computation, and Crystallography
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A new series of monosubstituted styryl- and bistyryl-2,2′-bipyridine luminophores (compounds 16-23) have been synthesized via Horner-Wadsworth-Emmons reaction involving a monophosphonate and donor aromatic aldehydes. In the title chromophores, the amino donors are varied between acyclic and cyclic while the alkoxy donors are varied in terms of their number and position. The absorption maxima of these chromophores shift predominantly due to intramolecular charge transfer (ICT) between different donor and acceptor moieties. The title donor-acceptor molecules exhibit intense fluorescence in solution at room temperature, and their emissive behavior has been found to be highly sensitive to solvent polarity. The fluorescence spectra and quantum yields of all the chromophores were recorded in four different solvent media, and the chromophores 16, 17, 19, and 21 exhibit fluorescence in the solid state too. The influence of the nature and position of the donor functionalities in the conjugated backbone of the bipyridine moiety on the electronic absorption properties of the title chromophores (16-23) has been demonstrated, which has further been corroborated by DFT and TD-DFT computation both in gas phase and in solution phase. The crystal structure of compound 18 has been described as a representative member of the family (16-23).
- Bodapati, Ramakrishna,Sarma, Monima,Kanakati, Arunkumar,Das, Samar K.
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supporting information
p. 12482 - 12491
(2016/01/09)
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- Monocarboxylate transporter 1 inhibitors as potential anticancer agents
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Potent monocarboxylate transporter 1 inhibitors (MCT1) have been developed based on α-cyano-4-hydroxycinnamic acid template. Structure-activity relationship studies demonstrate that the introduction of p-N, N-dialkyl/diaryl, and o-methoxy groups into cyanocinnamic acid has maximal MCT1 inhibitory activity. Systemic toxicity studies in healthy ICR mice with few potent MCT1 inhibitors indicate normal body weight gains in treated animals. In vivo tumor growth inhibition studies in colorectal adenocarcinoma (WiDr cell line) in nude mice xenograft models establish that compound 27 exhibits single agent activity in inhibiting the tumor growth.
- Gurrapu, Shirisha,Jonnalagadda, Sravan K.,Alam, Mohammad A.,Nelson, Grady L.,Sneve, Mary G.,Drewes, Lester R.,Mereddy, Venkatram R.
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supporting information
p. 558 - 561
(2015/05/27)
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- New Aggregation-Induced Emitters: Tetraphenyldistyrylbenzenes
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The synthesis of five novel distyrylbenzene (DSB) derivatives, featuring a central tetraphenylbenzene core, is reported. The targets show aggregation-induced emission (AIE), which, however, is substituent-dependent. For the pure hydrocarbon and derivative
- Freudenberg, Jan,Rominger, Frank,Bunz, Uwe H. F.
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p. 16749 - 16753
(2015/11/16)
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- Relationship between molecular stacking and optical properties of 9,10-bis((4-N,N-dialkylamino)styryl) anthracene crystals: The cooperation of excitonic and dipolar coupling
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Five 9,10-bis((4-N,N-dialkylamino)styryl) anthracene derivatives (DSA-C1-DSA-C7) with different length alkyl chains were synthesized. They showed the same color in dilute solutions but different colors in crystals. The absorption, photoluminescence, and fluorescence decay indicate that there exist both excitonic and dipolar coupling in crystals of DSA-C1-DSA-C7. X-ray crystallographic analysis revealed that all the crystals belong to the triclinic space group P1 with one molecule per unit cell and that the molecules in every crystal have the identical orientation. This offers ideal samples to investigate the impact of the molecular stacking on the optical properties of the crystals. For the first time, the cooperation of excitonic and dipolar coupling has been comprehensively studied, and the contribution to the spectral shift from the excitonic and dipolar couplings quantitatively obtained. The experiments of amplified spontaneous emission (ASE) together with measurements of the quantum efficiency further confirmed this interpretation. The results suggest that the excitonic and dipolar couplings between the adjacent molecules are both important and jointly induce the spectral shifts of the crystals.
- Li, Feng,Gao, Na,Xu, Hai,Liu, Wei,Shang, Hui,Yang, Wenjun,Zhang, Ming
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supporting information
p. 9991 - 9997
(2014/08/18)
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- Cruciform 9,10-distyryl-2,6-bis(p-dialkylamino-styryl)anthracene homologues exhibiting alkyl length-tunable piezochromic luminescence and heat-recovery temperature of ground states
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A series of 2,6-bis(p-dialkylaminostyryl)-9,10-distyrylanthracene (FCn) cruciforms with N-alkyl chains of different lengths have been synthesized, and their aggregation-enhanced fluorescence and piezochromic luminescence (PFC) behaviours are investigated. These 9,10-distyrylanthracene-containing cruciforms exhibit relatively low fluorescence quantum yields (Φ) in THF solution (Φ ≈ 10%) and moderate aggregation-enhanced emission in aqueous media (Φ ≈ 25%), but strong and chain length-dependent solid-state fluorescence emission. Grinding and pressing experiments indicate that they are all effective PFC materials in terms of mechanical stress-induced spectral shifts (ΔλPFC = 23-54 nm), moreover, the longer alkyl-containing FCn shows a larger ΔλPFC. Powder X-ray diffraction and differential scanning calorimetry measurements reveal that the transformation between the crystalline and amorphous states upon external stimuli is responsible for the reversible PFC behaviour. It is found that increasing the N-alkyl length could effectively decrease the cold-crystallization temperature of the ground states to render the PFC states with a tunable heat-recovering temperature, and ground FC10 and FC12 solids can recover spontaneously to their original states at room temperature.
- Zheng,Zhang,Sun,Li,Liu,Xue,Yang
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p. 1913 - 1920
(2014/03/21)
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- D-π-A-A-π-D prototype 2,2′-bipyridine dyads exhibiting large structure and environment-sensitive fluorescence: Synthesis, photophysics, and computation
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A series of 4,4′-π-conjugated-2,2′-bipyridine chromophores (MS 1-8) were synthesized, and their photophysical and thermal properties were investigated. The title "push-pull' chromophores", except MS 1, were integrated with both alkoxy and alkylamino donor functionalities that differ in their donation capabilities. The oligophenylenevinylene (OPV) chromophores MS 4-8 are associated with a π-extended backbone in which the position and the number of alkoxy donors were systematically varied. All of the studied systems possess a D-π-A-A-π-D dyad archetype in which the A-A is the central 2,2′-bipyridine acceptor core that is electronically attached with the donor termini through π-linkers. The fluorescence quantum yields of the synthesized chromophores are found to be sensitive to the molecular archetype and the solvent medium. Out of the eight fluorescent compounds reported in this article, the compound MS 5 exhibits fluorescence in the solid state also. The modulating effect of the nature, position, and number of donor functionalities on the optical properties of these classes of compounds has further been comprehended on the basis of DFT and TD-DFT computation in a solvent reaction field.
- Sarma, Monima,Chatterjee, Tanmay,Ghanta, Susanta,Das, Samar K.
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experimental part
p. 432 - 444
(2012/02/16)
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- Synthesis and photophysical properties of two-photon absorbing spirofluorene derivatives
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New spirofluorene-based quadrupolar two-photon absorbing dyes having triphenylamine and N,Ndibutylaniline as electron donors at the end of molcules were designed and synthesized. The thirdorder nonlinear optical properties of these compounds were studied using a two-photon excited fluorescence method. They were found to have high two-photon absorption cross-section owing to extended conjugation of the spirofluorene moiety. The effect of varying the donor strength could be discerned by comparing the two compounds. They were successfully used as a photosensitizers for two-photon initiated polymerization of three-dimensional micro-objects. Copyright
- Lim, Jea-Geon,Prabhakaran, Prem,Park, Jin Sun,Son, Yong,Kim, Tae-Dong,Yang, Dong-Yol,Lee, Kwang-Sup
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experimental part
p. 4403 - 4408
(2012/08/28)
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- Alkyl substituent effects on J- or H-aggregate formation of bisazomethine dyes
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Bisazomethine dyes with terminal alkyl substituents of different chain lengths (BAR: R = 1, 2, 3, 4, 5 and 6) were synthesized and deposited on a glass substrate to investigate the effect of the alkyl chain length on aggregate formation. Methyl- and ethyl-substituted bisazomethine dyes (BA1 and BA2) formed J-aggregates in thin films (ca. 50 nm), whereas, propyl-, butyl-, pentyl- and hexyl-substituted derivatives (BA3, BA4, BA5 and BA6) formed H-aggregates in thin films (ca. 50 nm). The aggregate formation of the BARs changed drastically between ethyl- and propyl-substituents (BA2/BA3). However, no remarkable changes were observed in the surface morphologies of BA2 and BA3 films. It is suggested that the critical determinant of aggregate formation of BAR is the molecular packing in the film, which depends on the chain length of the terminal alkyl substituent.
- Kinashi, Kenji,Lee, Kyun-Phyo,Matsumoto, Shinya,Ishida, Kenji,Ueda, Yasukiyo
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experimental part
p. 783 - 788
(2012/02/05)
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- New 3-hydroxyflavone derivatives for probing hydrophobic sites in microheterogeneous systems
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Nine new 3-hydroxyflavone derivatives as fluorescent molecular sensors having two well-separated emission bands were synthesized. These sensors can occupy well-determined locations and orientations in macromolecular ensembles, such as micelles due to their finely-tuned designs. These polarity-sensitive dyes can incorporate into the anhydrous hydrophobic core of aqueous micelles.
- Ozturk, Turan,Klymchenko, Andrey S.,Capan, Asli,Oncul, Sule,Cikrikci, Simay,Taskiran, Sule,Tasan, Bahar,Kaynak, F. Betul,Ozbey, Suheyla,Demchenko, Alexander P.
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p. 10290 - 10299
(2008/02/13)
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- Synthesis of triphenylamine-cored dendritic two-photon absorbing chromophores
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(Chemical Equation Presented) A new series of dendritic two-photon absorbing chromophores containing triphenylamine moiety as a core or branching points have been synthesized through a convergent synthetic strategy. One-photon and two-photon optical prope
- Wei, Peng,Bi, Xiangdong,Wu, Zhe,Xu, Zhi
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p. 3199 - 3202
(2007/10/03)
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- Novel multi-branched organic compounds with enhanced two-photon absorption benefiting from the strong electronic coupling
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Two novel multi-branched organic compounds, 1,2,4,5-tetrakis[(4′-N,N- diethylamino)styryl]benzene (TDEASB) and 1,2,4,5-tetrakis[(4′-N,N- dibutylamino)styryl]benzene (TDBASB), with strong electronic coupling among the conjugated arms, have been designed and synthesized. Their single-photon and two-photon absorption (TPA) and photoluminescent (PL) properties have been studied carefully. The two-photon absorption cross-sections of the two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are as high as 810 and 1030 GM for TDEASB and TDBASB, respectively. The strong TPA cross-sections indicate excellent conjugation and electron delocalization properties in these benzene-core based multi-branched compounds.
- Ren, Yan,Xin, Qian,Tao, Xu-Tang,Wang, Lei,Yu, Xiao-Qiang,Yang, Jia-Xiang,Jiang, Min-Hua
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p. 253 - 258
(2008/09/20)
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- Dielectric and Fluorescent Probes To Investigate Glass Transition, Melt, and Crystallization in Polyolefins
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Investigation of glass transition dynamics in polyolefins by broadband dielectric spectroscopy (DRS) is facilitated by the addition of a novel dielectric probe, (4,4′-N,N-dibutylamino)-(E)-nitrostilbene (DBANS), which introduces dipoles and made the polym
- Van Den Berg, Otto,Sengers, Wilco G.F.,Jager, Wolter F.,Picken, Stephen J.,Wuebbenhorst, Michael
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p. 2460 - 2470
(2007/10/03)
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- Polyaromatic amines. Part 3: Synthesis of poly(diarylamino)styrenes and related compounds
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The title compounds were synthesised and characterised as part of a study into new aromatic amines for charge transporting materials. Compounds 12-16, 20-24 and 27-34 are alkene linked triarylamines, compounds 35-36 are hydrazone derivatives and compounds 38-41 are pyrrole substituted triarylamines. Each compound was characterised by cyclic voltammetry.
- Plater, M. John,Jackson, Toby
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p. 4673 - 4685
(2007/10/03)
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- Hydroxy-functionalized bipyridine and tris(bipyridine)metal chromophores: Synthesis and optical properties
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A new family of symmetrically and unsymmetrically-substituted 4,4′-bis[(dialkylamino)styryl]-2,2′-bipyridine ligands, containing 1-4 hydroxy groups on their dialkylamino moieties, have been synthesized. They are readily prepared in good to excellent yields from 4,4′-dimethyl-2,2′-bipyridine and tetrahydropyranyloxy-protected [(hydroxyalkyl)amino]-benzaldehydes. These chromophores display excellent thermal stabilities, with decomposition temperatures of up to 310 °C. The influence of the OH groups on the optical properties (absorption and emission) is discussed. The synthesis of the corresponding heteroleptic and homoleptic tris(bipyridine)-metal(ii) complexes (M2+ = Ru2+, Zn2+), as building blocks for the elaboration of macromolecular NLO-phores, is also described. Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.
- Bouder, Thomas Le,Viau, Lydie,Guegan, Jean-Paul,Maury, Olivier,Bozec, Hubert Le
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p. 3024 - 3033
(2007/10/03)
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- Novel non-steroidal/non-anilide type androgen antagonists with an isoxazolone moiety
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3-Substituted (Z)-4-(4-N,N-dialkylaminophenylmethylene)-5(4H)-isoxazolones and related compounds were designed and prepared as candidates for structurally novel androgen antagonists. Several compounds showed potent anti-androgenic activity as assessed by nuclear androgen receptor binding assay and growth inhibition assay using androgen-dependent Shionogi carcinoma cells SC-3. They were approximately 10-220 times more potent than flutamide in these assay systems. They also showed anti-androgenic activity toward prostate tumor cell line LNCaP, which has an aberrant nuclear androgen receptor.
- Ishioka, Toshiyasu,Kubo, Asako,Koiso, Yukiko,Nagasawa, Kazuo,Itai, Akiko,Hashimoto, Yuichi
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p. 1555 - 1566
(2007/10/03)
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- Synthesis, structure and properties of a new two-photon photopolymerization initiator
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A new two-photon free-radical photopolymerization initiator, (E,E)-4-{2-[p′-(N,N-di-n-butylamino)stilben-p-yl]vinyl} pyridine (abbreviated to DBASVP), has been synthesized. Quantum chemistry calculations showed that the new initiator possesses a large delocalized π electron system, a large change in dipole moment on transition to the excited state anda large transition moment. The calculated two-photon absorption cross-section is as high as 881.34 × 10-50 cm4 s photon-1. The single-photon and two-photon absorption and fluorescence properties in various solvents have been investigated carefully. The new initiator exhibits outstanding solvent-sensitivity, which experimentally interprets the excellent electron delocalized properties of the molecule. A microstructure has been fabricated under irradiation at 800 nm using a 200 fs, 76 MHz Ti:sapphire femtosecond laser.
- Ren, Yan,Yu, Xiao-Qiang,Zhang, Dong-Ju,Wang, Dong,Zhang, Ming-Liang,Xu, Gui-Bao,Zhao, Xian,Tian, Yu-Peng,Shao, Zong-Shu,Jiang, Min-Hua
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p. 3431 - 3437
(2007/10/03)
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- Intramolecular electron density redistribution upon hydrogen bond formation in the anion Methyl Orange at the water/1,2-dichloroethane interface probed by phase interference second harmonic generation
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Surface second harmonic generation (SSHG) studies of the azobenzene derivative p-dimethylaminoazobenzene sulfonate, often referred as Methyl Orange (MO), at the neat water/1,2-dichloroethane (DCE) interface is reported. The two forms of the anionic MO dye
- Rinuy, Juliette,Piron, Alexis,Brevet, Pierre Francois,Blanchard-Desce, Mireille,Girault, Hubert H.
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p. 3434 - 3441
(2007/10/03)
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- Synthesis and characterization of 4-alkenyl and 4,4′-dialkenyl-2,2′-bipyridyl ligands bearing π-donor substituents
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The synthesis of a new series of π-donor mono- and disubstituted vinyl bipyridines (donor = 4-R2N-C6H4-; 4-RO-C6H4-; (C5H5)Fe(C5H4-); (C5H5)Ru(C5H4-)) has been achieved by reaction of the mono- and dilithio species of 4,4′-dimethyl-2,2′-bipyridine and the monolithio species of 4-nonyl-4′-methyl-2,2′-bipyridine with the appropriate aldehydes. Their 1H NMR and UV-visible characterizations are reported.
- Bourgault,Renouard,Lognone,Mountassir,Le Bozec
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p. 318 - 325
(2007/10/03)
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- Synthesis and characterization of end-functionalized oligo- (vinylthiophenes) with liquid crystal properties
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A general scheme for the synthesis of end-functionalized conjugated (E)-vinylthiophene oligomers with liquid crystal and potential second-order non-linear optical properties is described. These push-pull thiophene-containing aromatic molecules show mesogenic properties over different temperature ranges depending on the chain length and the functional end-groups.
- Maertens, Christophe,Zhang, Jian-Xin,Dubois, Philippe,Jerome, Robert
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p. 713 - 718
(2007/10/03)
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- Identification of 4-(N,N-Dipropylamino)Benzaldehyde as a Potent, Reversible Inhibitor of Mouse and Human Class I Aldehyde Dehydrogenase
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As the physiologic roles for the different classes of aldehyde dehydrogenase (ALDH) enzymes are elucidated, the identification of specific, reversible inhibitors becomes of great pharmacologic interest. Previous structure-function studies identified dialkylamino substituted benzaldehyde compounds as a novel class of reversible inhibitors of class I ALDH. To examine further structural requirements for inhibition, we tested a series of 4-(N,N-dialkylamino)benzaldehyde analogs as inhibitors of propanal oxidation by mouse liver and human erythrocyte class I ALDH. 4-(N,N-dipropylamino)benzaldehyde (DPAB) was identified as the most potent, reversible inhibitor of propanal oxidation by class I ALDH in spectrophotometric enzyme assays. In kinetic studies, DPAB showed mixed-type inhibition with respect to the aldehyde substrates propanal, phenylacetaldehyde, benzaldehyde, and aldophosphamide. DPAB exhibited uncompetitive inhibition with respect to the cofactor NAD. Inhibition constants (Ki) for DPAB, estimated from Dixon plots, were 10 nM (propanal) and 77 nM (phenylacetaldehyde) for mouse ALDH and 3 nM (propanal) and 70 nM (phenylacetaldehyde) for human ALDH. These Ki values are 100-fold lower than those reported for class I specific inhibitors. At low ( 75 percent, whereas inhibition of benzaldehyde (32 percent) and phenylacetaldehyde (19 percent) oxidation was reduced markedly. These results indicate that DPAB exhibits potent, reversible inhibition of mouse and human class I ALDH. The degree of inhibition was highly dependent on the structure of the aldehyde substrate.
- Russo, James,Chung, Song,Contreras, Kristi,Lian, Brian,Lorenz, Jon,Stevens, David,Trousdell, Wendy
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p. 399 - 406
(2007/10/03)
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- New sulfonyl-containing materials for nonlinear optics: Semiempirical calculations, synthesis, and properties
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In this study we describe semiempirical calculations, synthesis, ground-state dipole moment measurements, and measurements of molecular second-order hyperpolarizability coefficients (β) for new stilbene and azobenzene derivatives containing a methylsulfonyl group as the electron acceptor. We show that theoretical calculations can be used to predict the trends for molecular hyperpolarizabilities between similar compounds and that these gas-phase calculations underestimate β values, probably as a result of the valence basis set used in the calculations. Whereas the sulfone group has been demonstrated to give molecular hyperpolarizabilities somewhat less than those of similar nitro compounds, the difference becomes less as the degree of conjugation is increased. The increased transparency in the visible spectrum and the synthetic flexibility may make sulfonyl compounds important for some applications.
- Ulman, Abraham,Willand, Craig S.,K?hler, Werner,Robello, Douglas R.,Williams, David J.,Handley, Laura
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p. 7083 - 7090
(2007/10/02)
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- Charge-Shift Probes of Membrane Potential. Synthesis
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We are reporting two general synthetic approaches to a number of (aminostyryl)pyridinium dyes and their heterocyclic analogues which are of interest as electrochromic probes for membrane potential.The two routes which involve palladium-catalyzed coupling or aldol condensation permit considerable structure variations to be introduced in the dyes.Some spectral properties of the dyes are discussed.
- Hassner, A.,Birnbaum, D.,Loew, L. M.
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p. 2546 - 2551
(2007/10/02)
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