Planar-rotor architecture based pyrene-vinyl-tetraphenylethylene conjugated systems: photophysical properties and aggregation behavior

Organic & Biomolecular Chemistry
Debabrata JanaBinay K Ghorai

Abstract

Four pyrene-vinyl-tetraphenylethylene based conjugated materials were synthesized and characterized by FT-IR, NMR, and mass spectroscopy. The photophysical (including absorption, fluorescence, and fluorescence lifetime) and aggregation properties in tetrahydrofuran were investigated. The photophysical and aggregation behavior depends on the spacer, substituent, and also the architecture (mono or tetra-branched) of the molecule. The vinyl spacer mono-branched compound is aggregation induced emission (AIE) active (αAIE = ∼6). Vinyl spacer tetra-branched compounds are AIE inactive, but their emitting efficiency is good in both solution (Φfl = 63%) phase and in the aggregated state (Φfl = 43%). Phenylvinyl spacer tetra-branched compounds emit light strongly in solution (Φfl = 92%), but not in the aggregated state (Φfl = 8%). They are shown to be thermally stable and emit light in the green region (500-550 nm). The results of cyclic voltammetry measurements of these materials showed irreversible oxidation waves, and have high HOMO energy levels (-5.66 to -5.53 eV).

References

Jan 26, 2007·Journal of the American Chemical Society·Yoshimitsu SagaraKoji Araki
Apr 23, 2010·The Journal of Physical Chemistry. B·Weizhi WangShu Huang
Jul 27, 2010·Physical Chemistry Chemical Physics : PCCP·Fuyuki ItoToshihiko Nagamura
Oct 15, 2010·Accounts of Chemical Research·Huibiao LiuYuliang Li
Nov 26, 2010·The Journal of Physical Chemistry. B·Xiao FengYuping Dong
Dec 17, 2010·The Journal of Organic Chemistry·Kenta Kokado, Yoshiki Chujo
Dec 22, 2010·Journal of the American Chemical Society·Yi LiuBen Zhong Tang
Jul 12, 2011·Chemical Reviews·Teresa M Figueira-Duarte, Klaus Müllen
Feb 7, 2012·Organic & Biomolecular Chemistry·Jian-Yong HuTakehiko Yamato
Mar 22, 2012·Chemical Communications : Chem Comm·Yan LiBin Su
Apr 20, 2012·Chemical Communications : Chem Comm·Khai Leok ChanAlan Sellinger
Apr 27, 2013·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Andreas T HaedlerHans-Werner Schmidt
Oct 31, 2013·Organic & Biomolecular Chemistry·Xing FengTakehiko Yamato
Mar 29, 2014·Accounts of Chemical Research·Yongjun LiYuliang Li
Jul 1, 2014·Advanced Materials·Ju MeiBen Zhong Tang
Sep 27, 2014·Physical Chemistry Chemical Physics : PCCP·Jagadish K SalunkePrakash P Wadgaonkar
Nov 7, 2014·Chemical Society Reviews·Ryan T K KwokBen Zhong Tang

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