Fluorescence quenching of indolo[3,2-b]carbazole compounds by conformational motions of attached substituents

被引：14
|
作者：
Streckaite, Simona [1 ]
Karpicz, Renata [1 ]
Gruodis, Alytis [2 ]
Dehaen, Wim [3 ]
Van Snick, Sven [3 ]
Kirkus, Mindaugas [4 ]
Grigalevicius, Saulius [4 ]
Grazulevicius, Juozas V. [4 ]
Gulbinas, Vidmantas [1 ,2 ]
机构：
[1] Ctr Phys Sci & Technol, Savanoriu 231, LT-02300 Vilnius, Lithuania
[2] Vilnius Univ, Dept Gen Phys & Spect, Sauletekio 9-3, LT-10222 Vilnius, Lithuania
[3] Univ Leuven, Dept Chem, Celestijnenlaan 200F, B-3001 Leuven, Belgium
[4] Kaunas Univ Technol, Dept Polymer Chem & Technol, Radvilenu Plentas 19, LT-50254 Kaunas, Lithuania
来源：
DYES AND PIGMENTS | 2016年 / 133卷
关键词：
Indolo[3,2-b]carbazole; Conformational motion; Fluorescence quenching; Excited state relaxation; HOLE-TRANSPORTING MATERIALS; DERIVATIVES; BENZOTHIAZOLE; COPOLYMERS;
D O I：
10.1016/j.dyepig.2016.05.040
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The influence of substituents on spectral properties and the excited state relaxation of indolo[3,2-b] carbazole derivatives has been studied by means of steady-state and time-resolved spectroscopy and quantum chemical calculations. Conformational motions of the substituents in solutions were found to cause a significant acceleration of the non-radiative excited state relaxation and concomitant fluorescence quenching of the studied compounds in comparison with their solid films, where the conformational mobility is suppressed. Although the substituents also strongly influence the radiative relaxation rates, these rates are not sensitive to the conformations of the substituents. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：120 / 126
页数：7
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