Optical gain from the open form of a photochromic molecule in the solid state

The Journal of Physical Chemistry. B
Dario PisignanoRoberto Cingolani

Abstract

This work presents evidence for line-narrowing from the UV photoexcited open form of the photochromic molecule, indolinospiropyran (1',3'-dihydro-1',3',3'-trimethyl-6-nitrospiro [2H-1-benzopyran-2,2'-(2H)-indole]) in the solid state. The line-narrowing is attributable to amplified spontaneous emission induced by optical gain and assisted by the waveguiding within the organic film. Optical gain throughout a band as large as 28 nm, with a maximum gain coefficient of 5.6 cm(-1), is observed in the merocyanine emission region (660-730 nm). These results open the way to the realization of hybrid devices based on the coupling between photochromic behavior and stimulated emission from conjugated molecules, such as lasing optical memories, and lasers gated by optical molecular switches.

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Citations

Dec 19, 2009·Journal of Colloid and Interface Science·Ying WuLin Feng
Jan 6, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·R Q AlbuquerqueL De Cola
Jul 4, 2008·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Grazia CottoneGianfranco La Manna
Feb 15, 2018·Nature Communications·Dipak SamantaRafal Klajn
Mar 29, 2007·The Journal of Physical Chemistry. a·James T C WojtykErwin Buncel

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