- Effect of the Molecular Conformation on Excitation Energy Transfer in Conformationally Constrained Boryl-BODIPY Dyads
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We studied the dual emission characteristics of a series of boryl-BODIPYs (1-6) comprised of triarylborane (TAB) as an energy donor and BODIPY as an energy acceptor. The molecular conformations of dyads 1-6 were systematically tuned by judiciously changing the spacer that bridged the boryl and BODIPY moieties. Frontier molecular orbitals (FMOs) are localized in 3, 4, and 6 with a twisted molecular conformation. In contrast, FMOs are significantly delocalized in 1, 2, and 5 with the least-twisted molecular conformation. Dyads 1-6 showed dual emission features when they were excited at the TAB-dominated absorption band. However, the ratio between the two emission bands in 1-6 significantly varied depending on the molecular conformations. Systematic photoluminescence (PL) studies (both steady-state and time-resolved PL) together with computational, crystal structure, and anion binding studies established that the frustrated excited-state energy transfer from borane to BODIPY is the cause of the dual emission features in these molecular dyads. These studies also revealed that the energy transfer from borane to BODIPY can be elegantly tuned by modulating the dihedral angle between these two moieties.
- Nandi, Rajendra Prasad,Chinna Ayya Swamy,Dhanalakshmi, Pandi,Behera, Santosh Kumar,Thilagar, Pakkirisamy
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supporting information
p. 5452 - 5462
(2021/05/06)
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- PESTICIDAL AND PARASITICIDAL PYRAZOLE-ISOXAZOLINE COMPOUNDS
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The present invention relates to pesticidal and parasiticidal isoxazoline of formula (I) and salts thereof: wherein variables R1, P, Y and Q are described herein are as defined in the description. The invention also relates to parasiticidal and pesticidal compositions comprising the isoxazoline compounds of formula (I), processes for their preparation and their uses to prevent or treat parasitic infections or infestations in animals and as pesticides.
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Page/Page column 149; 150
(2019/03/05)
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- Oxidation of Iodo- and Bromo-Substituted Polymethylbenzenes in the System PbO2–CF3COOH–CH2Cl2
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The oxidation of mono- and diiodo- and -bromo-substituted polymethylbenzenes (mesitylene and durene) in the system PbO2–CF3COOH–CH2Cl2 at room temperature (2–70 h) leads mainly to the formation of iodo- and brom
- Sandzhieva,Aryamova,Sukharzhevskii,Grinenko,Vasilyev
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p. 397 - 402
(2018/06/12)
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- Porphyrin sensitizers containing an auxiliary benzotriazole acceptor for dye-sensitized solar cells: Effects of steric hindrance and cosensitization
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Dye-sensitized solar cells (DSSCs) have attracted intensive attention in developing photovoltaic devices for employing solar energy. For developing panchromatic and efficient porphyrin sensitizers, it has been demonstrated to be an effective approach to i
- Song, Heli,Tang, Weiqiang,Zhao, Shuangliang,Liu, Qingyun,Xie, Yongshu
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p. 323 - 331
(2018/04/12)
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- QUINAZOLINE DERIVATIVES USED TO TREAT HIV
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Described herein are compounds of Formula (I) and tautomers and pharmaceutical salts thereof, compositions and formulations containing such compounds, and methods of using and making such compounds.
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Paragraph 0344
(2016/07/27)
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- NOVEL THIOPHENE DERIVATIVES AS SPHINGOSINE-1-PHOSPHATE-1 RECEPTOR AGONISTS
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The invention relates to novel thiophene derivatives, their preparation and their use as pharmaceutically active compounds. Said compounds particularly act as immunosuppressive agents.
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- Heterocyclic cyclopropyl-substituted FXR binding compounds
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The present invention relates to compounds defined by formula (I): or an enantiomer, diastereomer, tautomer, solvate or pharmaceutically acceptable salt thereof, wherein R1 and R2 are independently from each other selected from hydro
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Page/Page column 21
(2009/12/23)
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- Novel Thiophene Derivatives as Spingosine-1-Phosphate-1 Receptor Agonists
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The invention relates to novel thiophene derivatives, their preparation and their use as pharmaceutically active compounds. Said compounds particularly act as immunosuppressive agents.
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Page/Page column 49
(2008/12/07)
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- HYDROGENATED BENZO (C) THIOPHENE DERIVATIVES AS IMMUNOMODULATORS
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The invention relates to novel thiophene derivatives, their preparation and their use as pharmaceutically active compounds. Said compounds particularly act as immunosuppressive agents.
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Page/Page column 132
(2010/11/24)
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- Synthesis and spectroscopic properties of arene-substituted pyrene derivatives as model compounds for fluorescent polarity probes
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In this paper, the syntheses of a variety of substituted phenyl pyrenes 5a-n by Suzuki cross-coupling and of two decoupled analogues 10 and 17 are reported. These compounds have been investigated by fluorescence spectroscopy. The solvatochromism of their emission bands (Stokes shift) and the quantum yields in methylcyclohexane and acetonitrile have been determined. Furthermore, the crystal structure of a pyrenyl-tris(2,2′-bipyridine)ruthenium(II) complex 19 is presented.
- Beinhoff, Matthias,Weigel, Wilfried,Jurczok, Martin,Rettig, Wolfgang,Modrakowski, Claudia,Bruedgam, Irene,Hartl, Hans,Schlueter, A. Dieter
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p. 3819 - 3829
(2007/10/03)
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