Unveiling Electronic Transitions in Three Novel Chiral Azo-Compounds Using Linear and Nonlinear Circular Dichroism: A Theoretical Experimental Study

被引：4

作者：

Toro, Carlos ^{[1
]}

Passier, Remy ^{[1
]}

Diaz, Carlos ^{[1
]}

Tuuttila, Tero ^{[2
]}

Rissanen, Kari ^{[2
]}

Huuskonen, Juhani ^{[2
]}

Hernandez, Florencio E. ^{[1
,3
]}

机构：

[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

[2] Univ Jyvaskyla, Dept Chem, Nanosci Ctr, FIN-40014 Jyvaskyla, Finland

[3] Univ Cent Florida, CREOL, Coll Opt & Photon, Orlando, FL 32816 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2011年 / 115卷 / 07期

基金：

美国国家科学基金会;

关键词：

2-PHOTON ABSORPTION; AZOBENZENE; SENSOR; MOLECULES; POLYMERS;

D O I：

10.1021/jp1074253

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, we report on the experimental and theoretically study of the linear absorption, electronic circular dichroism (ECD) spectra, as well as the two-photon absorption circular-linear dichroism measurements of three different chiral azo derivatives in dimethylsulfoxide solution. Using potential energy surfaces and frontier orbital analysis, we established the most stable conformation for each molecule and elucidated their different electronic transitions. Our theoretical calculations allowed us to unambiguously identify the spectral position of such transitions and correlate them with the spectral profiles observed in the two-photon absorption spectra. To further elucidate the characteristics of the main electronic transitions in terms of spectral shape and position, we carried out measurements of the polarization dependent two-photon absorption cross sections and determined the two-photon circular-linear dichroism spectra of these azo dyes.

引用

页码：1186 / 1193

页数：8

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