Benzimidazoline-Dimethoxypyrene. An Effective Promoter System for Photoinduced Electron Transfer Promoted Reductive Transformations of Organic Compounds
2-(p-Methoxyphenyl)-1,3-dimethylbenzimidazoline (ADMBI) and 2-(o-hydroxyphenyl)-1,3-dimethylbenzimidazoline (HPDMBI) are used as reducing reagents in 1,8-dimethoxypyrene (1,8-DMP) sensitized, photoinduced electron transfer (PET) reactions. This system was effectively used for PET induced, reductive transformations of various organic substrates, including α,β-epoxy ketones, the olefin tethered 2-br
Photorelease of Carboxylic Acids, Amino Acids, and Phosphates from <i>N</i>-Alkylpicolinium Esters Using Photosensitization by High Wavelength Laser Dyes
作者:Chitra Sundararajan、Daniel E. Falvey
DOI:10.1021/ja050760f
日期:2005.6.1
Visible light (>450 nm) is used to efficiently cleave carboxylic acids, aminoacids, and phosphates from their N-methyl picolinium esters. Photolysis using pyrromethene dyes PM 546 and PM 597 and also coumarin 6 as photosensitizers effects release of carboxylic acids, N-protected aminoacids, and phosphates in quantitative yields. The effective rate of photorelease by the dyes, Phiepsilon, was found
Modification of the carrier mobility of conducting PF-EP polymer by formation of their composites with thiophene derivatives
作者:Sergey D. Tokarev、Yury V. Fedorov、Anna A. Moiseeva、Gediminas Jonusauskas、Dmitry A. Lypenko、Alexey E. Aleksandrov、Alexey R. Tameev、Eugene I. Maltsev、Galina I. Nosova、Elena V. Zhukova、Olga A. Fedorova
DOI:10.1016/j.orgel.2019.105586
日期:2020.3
In the paper we present synthesis and characterization of new donor–acceptor thiophene derivatives (TDs) containing vinylbenzo[d]thiazole, vinylpyridine and 1H-imidazo[4,5-f][1,10]phenanthroline residues. Using CELIV method, electron and hole mobility have been studied in the polymer layers based on poly [9,9-bis(6-diethoxyl-phosphorylhexyl)fluorine] (PF-EP) doped with the TDs. Polymer light-emitting
在本文中,我们介绍了含有乙烯基苯并[d]噻唑,乙烯基吡啶和1H-咪唑并[4,5- f ] [1,10]菲咯啉残基的新型供体-受体噻吩衍生物(TDs)的合成和表征。使用CELIV方法,已经研究了掺杂TDs的基于聚[9,9-双(6-二乙氧基-磷酰基己基)氟](PF-EP)的聚合物层中的电子和空穴迁移率。与不含TD的PF-EP相比,包含新合成的聚芴(PF)作为发射层和PF-EP / TD复合材料作为电子传输层的聚合物发光二极管(PLED)在15V时显示出更高的亮度。
Protonation-Gated Dual Photochromism of a Chromene–Styryl Dye Hybrid
作者:Daria V. Berdnikova、Thomas Paululat、Gediminas Jonusauskas、Svetlana M. Peregudova、Olga A. Fedorova
DOI:10.1021/acs.orglett.7b02798
日期:2017.10.20
A novel hybrid bisphotochromic system involving a chromene residue and a styryl dye fragment is described. Initially, the compound shows almost no photochromism due to intramolecular energy and electrontransfer between the chromophores. Protonation of the hybrid system blocks the transfer processes and unlocks a dual photochromic activity that includes ring opening of the chromene fragment and E-Z-isomerization