- Synthesis of dicyanomethyl and nitro substituted p-polyphenyls and their salts
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A one-step, medium-scale synthesis of several novel dicyanomethyl and nitro substituted p-polyphenyls from 4,4'- or 4''-diiodo-parapolyphenyls and from 4-iodo-4'- or 4''-nitro-p-polyphenyls, respectively, and sodium malononitrile using a palladium catalys
- Zauhar,Bandrauk,Truong,Michel
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- Two-dimensional oligoarylenes: Synthesis and structure-properties relationships
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A novel series of two-dimensional π-conjugated oligoarylenes has been synthesized by a divergent approach using Pd-catalysed Suzuki cross-coupling of tetraiodophenylbenzene and arylboronic acid as a key step. It has been shown that the 'X-branched' structure can provide a useful platform to construct amorphous molecular materials as it can enhance the morphological and thermal stability as well as to facilitate solubility and processibility of a material when compared to those of the corresponding linear oligomers. The diphenylamino end-capped two-dimensional oligoarylenes were found useful as a hole transporting/emitting layer for light emitting applications.
- Li, Zhong Hui,Wong, Man Shing,Tao, Ye
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- AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENCE ELEMENT USING THE SAME
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Of a specific structure novel aromatic amine derivatives, and at least a light-emitting layer between a cathode and an anode including 1 layer or an organic thin film composed of one layer interposed in an organic electroluminescent element, said organic thin film least 1 layer, hole transport layer in particular said aromatic amine derivatives by itself or as a component of a mixture by, whether or not result in crystallization of molecules, organic electroluminescent device corresponding to a predetermined liquid crystal and, tube having a long lifetime in organic electroluminescent device with high.
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Paragraph 0314-0315
(2016/10/17)
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- Selective and random syntheses of [n]cycloparaphenylenes (n = 8-13) and size dependence of their electronic properties
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[n]Cycloparaphenylenes (n = 8-13, CPPs) were synthesized, and their physical properties were systematically investigated. [8] and [12]CPPs were selectively prepared from the reaction of 4,4′-bis(trimethylstannyl) biphenyl and 4,4′-bis(trimethylstannyl)terphenyl, respectively, with Pt(cod)Cl2 (cod = 1,5-cyclooctadiene) through square-shaped tetranuclear platinum intermediates. A mixture of [8]-[13]CPPs was prepared in good combined yields by mixing biphenyl and terphenyl precursors with platinum sources. Products were easily separated and purified by using gel permeation chromatography. In 1H NMR spectra, the proton of the CPPs shifts to a lower field as n increased due to an anisotropic effect from the nearby PP moieties. Although the UV-vis spectra were rather insensitive to the size of the CPPs, the fluorescence spectra changed significantly in relation to their size. A larger Stokes shift was observed for the smaller CPPs. Redox properties of the CPPs were measured for the first time by using cyclic voltammetry, and the smaller CPPs had lower oxidation potentials. The results are consistent with the HOMO energies of CPPs, of which the smaller CPPs had higher energies.
- Iwamoto, Takahiro,Watanabe, Yoshiki,Sakamoto, Youichi,Suzuki, Toshiyasu,Yamago, Shigeru
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supporting information; experimental part
p. 8354 - 8361
(2011/07/30)
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- Synthesis and functional properties of symmetrically naphthyl-Based oligoarylenes with high glass-transition temperatures
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Symmetrically naphthyl-based π-conjugated oligoarylenes, OPP(4)Ph-TNp, OPP(4)An-TNp and OPP(4)OXTNp have successfully been synthesized by a divergent approach using Pd-catalyzed Suzuki cross-coupling reaction of diiodo- or dibromo-oligoarylene and arylboronic acid as a key step. Their optical, electrochemical and thermal properties have also been characterized. These newly synthesized naphthyl-based oligoarylenes show highly morphological (Tg 149-187 °C) and thermal (Tdec 509-597 °C) stabilities as well as exhibit potential applications in optoelectronic fields.
- Zhang, Xiaolinga,Sun, Kanga,Liu, Yurong,Xiong, Mojunb,Xia, Pingfanga,Li, Zhonghui,Cao, Zijian
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experimental part
p. 1034 - 1040
(2010/10/18)
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- PROTON-CONDUCTING ORGANIC MATERIALS
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Proton-conducting material having a degree of crystallinity of at least 30%, which comprises: i) at least one organic compound having the formula (I), R1(R2)m(R3)n wherein - R1 is an optionally fused aromatic, c
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Page/Page column 24-25
(2010/12/29)
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- AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
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A novel aromatic amine derivative which is a diamine compound having a p-terphenyl-4,4"-diyl structure. An organic electroluminescence device which is composed of one or more organic thin film layers including at least one light emitting layer sandwiched
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Page/Page column 23
(2009/04/23)
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- AROMATIC AMINE DERIVATIVES AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
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The present invention provides a novel aromatic amine derivative having a specific structure and an organic electroluminescence device in which an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, wherein at least one layer in the above organic thin film layer, particularly a hole injecting layer contains the aromatic amine derivative described above in the form of a single component or a mixed component. Use of the aromatic amine derivative described above materialize an organic electroluminescence device which reduces an operating voltage and makes molecules less liable to be crystallized and which enhances a yield in producing the organic EL device and has a long lifetime.
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Page/Page column 50
(2008/12/04)
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- Molecular design and preparation of bis-isophthalate electrochromic systems having controllable color and bistability
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(Chemical Equation Presented) New electrochromic systems based on bis-isophthalates were designed and prepared. They showed electrochromism behavior by two-electron reduction. The displayed colors showed greatly enhanced bistability and were dependent on
- Sharmoukh,Ko, Kyoung Chul,Park, So Yeon,Ko, Ju Hong,Lee, Ji Min,Noh, Changho,Lee, Jin Yong,Son, Seung Uk
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body text
p. 5365 - 5368
(2009/06/06)
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- Aromatic amine derivative and organic electroluminescence device employing the same
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A novel aromatic amine derivative having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the aromatic amine derivative singly or as a component of a mixture. The device can be driven under a decreased voltage and has a long life. The device can be realized by using the derivative.
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Page/Page column 19
(2010/11/27)
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- Biphenyl- and terphenyl-based recyclable organic trivalent iodine reagents
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Biphenyl- and terphenyl-based recyclable trivalent iodine reagents, such as 4-bromo-4′-(diacetoxyiodo)biphenyl, 4,4′-bis(diacetoxyiodo)biphenyl, 1,4-bis[4-(diacetoxyiodo)phenyl]benzene, 4-bromo-4′-[(hydroxy)(tosyloxy)iodo]biphenyl, 4,4′-bis[(hydroxy)(tosyloxy)iodo]biphenyl, were simply prepared and their reactivities for the oxidative rearrangement of ketones to esters, TEMPO-mediated oxidation of alcohols to aldehydes or ketones, oxidative dealkylation of N-alkylsulfonamides to sulfonamides, and α-tosyloxylation of ketones were compared with p-(diacetoxyiodo)toluene and p-[(hydroxy)(tosyloxy)iodo]toluene to show the same reactivities and, moreover, the biphenyl- and terphenyl-based iodoarenes formed were recovered by simple filtration of the reaction mixture in every reaction. Thus, these biphenyl- and terphenyl-based trivalent iodine reagents can be used as the recyclable reagents.
- Moroda, Atsushi,Togo, Hideo
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p. 12408 - 12414
(2007/10/03)
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- 2,4,6,8-tetraiodo-2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7-dione as a mild and convenient reagent for iodination of aromatic compounds
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2,4,6,8-Tetraiodo-2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7-dione (tetraiodoglycoluril) is a convenient reagent for preparative iodination of benzene, alkylbenzenes, polycyclic hydrocarbons, aromatic amines, and phenol ethers in organic solvents under mild conditions.
- Chaikovski,Filimonov,Yagovkin,Ogorodnikov
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p. 2411 - 2415
(2007/10/03)
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- One Pot Synthesis of p-Polyphenyls via the Intramolecular Cyclization of 3-Dimethylaminohex-5-en-1-ynes
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Para linked polyphenyls of various molecular weights are conveniently synthesized from p-bis(3-dimethylamino-1-propynyl)arenes and 1-aryl-2-propenyl bromides in moderate yields using a three step, one-pot procedure.
- Unroe, Marilyn R.,Reinhardt, Bruce A.
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p. 981 - 986
(2007/10/02)
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- A SIMPLE METHOD FOR THE IODINATION OF AROMATIC COMPOUNDS
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The iodine - (trifluoroacetoxyiodo)benzene system is effective for the iodination of aromatic compounds, alkylbenzenes, various polynuclear aromatic hydrocarbons, halogenobenzenes, and some heterocyclic compounds.Trifluoroacetyl hypoiodite, which is a source of electrophilic iodine, is probably formed initially.Trifluoroacetyl hypoiodite can be generated in situ from (diacetoxyiodo)benzene and trifluoroacetic acid.
- Merkushev, E. B.,Yudina, N. D.
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p. 2320 - 2322
(2007/10/02)
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