Light-induced dipole moment modulation in diarylethenes: a fundamental study

被引：8

作者：

Bianco, Andrea ^{[1
]}

Ferrari, Giorgio ^{[2
]}

Castagna, Rossella ^{[3
]}

Rossi, Andrea ^{[2
]}

Carminati, Marco ^{[2
]}

Pariani, Giorgio ^{[1
]}

Tommasini, Matteo ^{[3
]}

Bertarelli, Chiara ^{[3
,4
]}

机构：

[1] INAF Osservatorio Astron Brera, Via Bianchi 46, I-23807 Merate, Italy

[2] Politecn Milan, Dipartimento Elettr Informat & Bioingn, Via Ponzio 34-5, I-20133 Milan, Italy

[3] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

[4] Ist Italiano Tecnol, PoliMi, Ctr Nano Sci & Technol, Via Pascoli 70-3, I-20133 Milan, Italy

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 45期

关键词：

SPIROPYRAN; POLARIZABILITY; SUBSTITUENTS; SPECTRUM;

D O I：

10.1039/c6cp05609a

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：

The dipole moment of photochromic diarylethenes is determined in solution for both the coloured and uncoloured forms by measuring the capacitance of a capacitor filled with a photochromic solution as a dielectric material. Diarylethenes with different substituents are investigated and the modulation of the dipole moment is related to their chemical structures. We determine a modulation of the dipole moment up to 4 Debye. We discuss the model used to obtain the dipole moment from the capacitance measurements and we compare the experimental results with the outcomes from DFT calculations. The results highlight the importance of conformational effects in the description of the dipole moment of diarylethenes.

引用

页码：31154 / 31159

页数：6

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