Spatially resolved chiroptical study of thin films of benzo[1,2-b:4,5-b′]dithiophene-based oligothiophenes by synchrotron radiation electronic circular dichroism imaging (SR-ECDi) technique

被引：20

作者：

Albano, Gianluigi ^{[1
,4
]}

Gorecki, Marcin ^{[2
]}

Javorfi, Tamas ^{[3
]}

Hussain, Rohanah ^{[3
]}

Siligardi, Giuliano ^{[3
]}

Pescitelli, Gennaro ^{[1
]}

Di Bari, Lorenzo ^{[1
]}

机构：

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

[2] Polish Acad Sci, Inst Organ Chem, Warsaw, Poland

[3] Diamond Light Source Ltd, Chilton OX11 0DE, Didcot, England

[4] Univ Bari Aldo Moro, Dipartimento Chim, Via Edoardo Orabona 4, I-70126 Bari, Italy

来源：

AGGREGATE | 2022年 / 3卷 / 05期

关键词：

benzo[1,2-b:4,5-b ']dithiophene; circular dichroism imaging; oligothiophenes; synchrotron radiation; thin films; MUELLER MATRIX POLARIMETRY; OPTICAL-ACTIVITY; BEAMLINE B23; CHIRALITY; MOLECULES; MICROSCOPE;

D O I：

10.1002/agt2.193

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The study of the chiroptical properties of thin-film samples of two chiral benzo[1,2-b:4,5-b']dithiophene-based oligothiophenes with optoelectronic properties was carried out at Diamond B23 beamline using the synchrotron radiation electronic circular dichroism imaging (SR-ECDi) facility. The experimental results support the hypothesis that the non-reciprocal circularly polarized absorption observed in these materials is due to the combined linear dichroism and linear birefringence contributions. The mapping at 50-mu m spatial resolution revealed that several species coexist in the mesoscopic chiral domains likely due to different aggregated phases, which were identified in the films by SR-ECDi but could not be detected with benchtop ECD instruments.

引用

页数：10

共 65 条

[11] Mueller matrix polarimetry with four photoelastic modulators: theory and calibration [J].