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Optical Gain From the Open Form of a Photochromic Molecule in the Solid State

Optical Gain From the Open Form of a Photochromic Molecule in the Solid State

Dario Pisignano, Elisa Mele, Luana Persano, Athanassia Athanassiou, Costas Fotakis, Roberto Cingolani

J Phys Chem B. 2006 Mar 16;110(10):4506-9.

PMID: 16526673

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1498880	1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole]		1498-88-0	Price

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