Synthesis of Diphenylchalcogenophene Diboronic Acid Bis(pinacol) Esters and Halogen Photoelimination from Tellurium by Triplet-Triplet Annihilation
作者:Peng-Fei Li、Elisa I. Carrera、Dwight S. Seferos
DOI:10.1002/cplu.201600335
日期:2016.9
The synthesis of diphenylthiophene-, diphenylselenophene-, and diphenyltellurophene-based diboronic bis(pinacol) esters and their optoelectronic properties is reported. The addition of bromine to the borylated diaryltellurophene and subsequent photoelimination are investigated. The photochemical quantum yield of bromine photoelimination is (9.7±0.2) % at a 4.4 m trap (2,3-dimethyl-1,3-butadiene) concentration
Permanently porous hydrogen-bonded frameworks of rod-like thiophenes, selenophenes, and tellurophenes capped with MIDA boronates
作者:Peng-Fei Li、Chenxi Qian、Alan J. Lough、Geoffrey A. Ozin、Dwight S. Seferos
DOI:10.1039/c5dt04960a
日期:——
Permanently porous hydrogen-bonded organic frameworks comprising rod-like molecules with two MIDAboronate termini have been prepared. We show that MIDAboronates self-assemble through multiple hydrogen-bonding interactions. Thiophene-containing frameworks are fluorescent and have a 6.6% absolute quantum yield. The approach appears to be general and introduces new design rules for constructing hydrogen-bonded
Triplet materials have been employed to achieve high‐performing organicsolarcells (OSCs) by extending the exciton lifetime and diffusion distances, while the triplet non‐fullerene acceptor materials have never been reported for bulk heterojunction OSCs. Herein, for the first time, three triplet molecular acceptors based on tellurophene with different degrees of ring fusing were designed and synthesized
A fluorescence turn-on and colorimetric probe based on a diketopyrrolopyrrole–tellurophene conjugate for efficient detection of hydrogen peroxide and glutathione
作者:Matinder Kaur、Da Seul Yang、Kihang Choi、Min Ju Cho、Dong Hoon Choi
DOI:10.1016/j.dyepig.2013.09.001
日期:2014.1
A reversible probe based on diketopyrrolopyrrole-tellurophene conjugate for the detection of reactive oxygen species has been designed and synthesized. The probe utilizes the redox properties of the tellurium atom for the detection of reactive oxygen species and exhibits high selectivity and sensitivity towards H2O2; the presence of which is demonstrated by a fluorescent signal. In addition to fluorescence signal, the probe displayed a color change from light blue to light purple upon oxidation by H2O2 in aqueous media. The generated tellurophene-1-oxide may be quickly reduced by glutathione to regenerate the original diketopyrrolopyrrole-tellurophene conjugate. The probe can be applied to monitor the concentration of H2O2 in aqueous solution over an approximate pH range 3.8-8.0. (C) 2013 Elsevier Ltd. All rights reserved.
Thermal and Photoreductive Elimination from the Tellurium Center of π-Conjugated Tellurophenes
作者:Elisa I. Carrera、Theresa M. McCormick、Marius J. Kapp、Alan J. Lough、Dwight S. Seferos
DOI:10.1021/ic402485d
日期:2013.12.2
This study introduces small molecule tellurophenes that can undergo photoreductive elimination. A tellurophene compound with strong light absorption properties and extended π-conjugation, 2,5-bis[5-(N,N′-dihexylisoindigo)]tellurophene (1), has been synthesized. Halogen oxidative addition to the tellurium center from various halogen sources gives the dibromo- (1Br2) and dichloro- (1Cl2) adducts, leading