Novel Photoswitchable Dihetarylethenes Exhibiting Fluorescence

Photochromic bridged dihetarylethenes exhibiting photochromism were synthesized. The synthesized coumarinyl(thienyl) thiazoles also display light regulated fluorescence in their open form. When the open form is irradiated with UV-light of wavelength less than 400 nm, a significant decrease in fluore...

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Bibliographic Details
Published inJournal of fluorescence Vol. 30; no. 1; pp. 35 - 40
Main Authors Mahesh, K., Padmavathi, D. Annapurna
Format Journal Article
LanguageEnglish
Published New York Springer US 2020
Springer Nature B.V
Subjects
Analytical Chemistry
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Fluorescence
Original Article
Photochromism
Regulators
Synthesis
Ultraviolet radiation
Fluorescence
Density functional theory
Photochromism
Dihetarylethenes
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Summary:Photochromic bridged dihetarylethenes exhibiting photochromism were synthesized. The synthesized coumarinyl(thienyl) thiazoles also display light regulated fluorescence in their open form. When the open form is irradiated with UV-light of wavelength less than 400 nm, a significant decrease in fluorescence intensity is observed due to cyclisation. Again, when the cyclised isomeric form is irradiated with visible light of wavelength greater than 470 nm the open form along with fluorescence is recovered. This reversible photo switching behaviour of dihetarylethenes may make them to be used as photo regulators. This phenomenon is also supported by DFT calculations.
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ISSN:1053-0509
1573-4994
DOI:10.1007/s10895-019-02444-7