Issue 78, 2015
From the journal:

RSC Advances

Visible-light triggered photoswitching systems based on fluorescent azulenyl-substituted dithienylcyclopentenes†

Eugenia Andreea Dragu,a   Adrian E. Ion,b   Sergiu Shova,c   Daniela Bala,d   Constantin Mihailciuc,d   Mariana Voicescu,e   Sorana Ionescud  and  Simona Nica*a  

* Corresponding authors

a Institute of Organic Chemistry “C. D. Nenitzescu” of The Romanian Academy, Splaiul Independentei, 202B, Bucharest, Romania
E-mail: snica@cco.ro
Fax: +40 21 3121 601
Tel: +40 21 3167 900

b Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Str. Dumbrava Rosie, no. 23, Bucharest, Romania

c “Petru Poni” Institute of Macromolecular Chemistry of The Romanian Academy, Grigore-Ghica Voda Alley, no. 41A, Iasi, Romania

d Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, Regina Elisabeta, no. 4-12, Bucharest, Romania

e “Ilie Murgulescu” Institute of Physical Chemistry of The Romanian Academy, Splaiul Independentei 202, Bucharest, Romania

Abstract

Novel azulenyl functionalized dithienylethenes were synthesized, and their photochromic reactivity, fluorescent and electrochemical properties were investigated. By tailoring the conventional dithienylcyclopentene chromophore with azulene groups, the photocyclization occurred with 405 nm wavelength light irradiation. These compounds exhibited relatively strong fluorescence at 524 nm when excited at 360 nm, which decreased along with the photocyclization. Furthermore, their electrochemical oxidation induced cyclization.

Graphical abstract: Visible-light triggered photoswitching systems based on fluorescent azulenyl-substituted dithienylcyclopentenes

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Article information

DOI
https://doi.org/10.1039/C5RA11974J
Article type
Paper
Submitted
22 Jun 2015
Accepted
17 Jul 2015
First published
17 Jul 2015

RSC Adv., 2015,5, 63282-63286

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Visible-light triggered photoswitching systems based on fluorescent azulenyl-substituted dithienylcyclopentenes

E. A. Dragu, A. E. Ion, S. Shova, D. Bala, C. Mihailciuc, M. Voicescu, S. Ionescu and S. Nica, RSC Adv., 2015, 5, 63282 DOI: 10.1039/C5RA11974J

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