Modulation of circularly polarized luminescence through excited-state symmetry breaking and interbranched exciton coupling in helical push-pull organic systems

被引：83

作者：

Dhbaibi, Kais ^{[1
,8
]}

Favereau, Ludovic ^{[1
]}

Srebro-Hooper, Monika ^{[2
]}

Quinton, Cassandre ^{[1
]}

Vanthuyne, Nicolas ^{[3
]}

Arrico, Lorenzo ^{[4
]}

Roisnel, Thierry ^{[1
]}

Jamoussi, Bassem ^{[5
]}

Poriel, Cyril ^{[1
]}

Cabanetos, Clement ^{[6
]}

Autschbach, Jochen ^{[7
]}

Crassous, Jeanne ^{[1
]}

机构：

[1] Univ Rennes, CNRS, UMR 6226, ISCR,ScanMAT,UMS 2001, F-35000 Rennes, France

[2] Jagiellonian Univ, Fac Chem, Gronostajowa 2, PL-30387 Krakow, Poland

[3] Aix Marseille Univ, CNRS, Cent Marseille, ISm2, Marseille, France

[4] Univ Pisa, Dipartimento Chim & Chim Ind, Via Moruzzi 13, I-56124 Pisa, Italy

[5] King Abdulaziz Univ, Fac Meteorol Environm & Arid Land Agr, Dept Environm Sci, Jeddah 21589, Saudi Arabia

[6] Univ Angers, CNRS, UMR 6200, MOLTECH Anjou, 2 Bd Lavoisier, F-49045 Angers, France

[7] SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA

[8] Univ Gabes, Fac Sci Gabes, Zrig 6072, Gabes, Tunisia

来源：

CHEMICAL SCIENCE | 2020年 / 11卷 / 02期

基金：

美国国家科学基金会;

关键词：

CHARGE-TRANSFER; ENANTIOSELECTIVE SYNTHESIS; PHOTOPHYSICAL PROPERTIES; CHIROPTICAL PROPERTIES; DICHROISM; ELECTROLUMINESCENCE; 1,8-NAPHTHALIMIDE; MOLECULES; EFFICIENT; DESIGN;

D O I：

10.1039/c9sc05231c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

pi-Helical push-pull dyes were prepared and their (chir)optical properties were investigated both experimentally and computationally. Specific fluorescent behaviour of bis-substituted system was observed with unprecedented solvent effect on the intensity of circularly polarized luminescence (CPL, dissymmetry factor decreasing from 10(-2) to 10(-3) with an increase in solvent polarity) that was linked to a change in symmetry of chiral excited state and suppression of interbranched exciton coupling. The results highlight the potential of CPL spectroscopy to study and provide a deeper understanding of electronic photophysical processes in chiral pi-conjugated molecules.

引用

页码：567 / 576

页数：10

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