PROTON-TRANSFER LASERS FROM SOLID POLYMERIC CHAINS WITH COVALENTLY BOUND 2-(2'-HYDROXYPHENYL)BENZIMIDAZOLE GROUPS

Authors
FERRER ML ACUNA AU AMATGUERRI F COSTELA A FIGUERA JM FLORIDO F SASTRE R
Citation
Ml. Ferrer et al., PROTON-TRANSFER LASERS FROM SOLID POLYMERIC CHAINS WITH COVALENTLY BOUND 2-(2'-HYDROXYPHENYL)BENZIMIDAZOLE GROUPS, Applied optics, 33(12), 1994, pp. 2266-2272
Citations number
27
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
33
Issue
12
Year of publication
1994
Pages
2266 - 2272
Database
ISI
SICI code
0003-6935(1994)33:12<2266:PLFSPC>2.0.ZU;2-Z
Abstract
The lasing properties of a number of newly synthesized 2-(2'-hydroxyph enyl)benzimidazole derivatives copolymerized with methyl methacrylate or dissolved in poly(methyl methacrylate) and pumped with an N2 laser are reported. The radiation mechanism is based on the intramolecular p roton-transfer in the electronic excited state. Both the lasing effici ency and the dye photostability increase significantly when the proton -transfer chromophore is covalently bound to the polymeric chain, and energy-conversion efficiencies comparable to those obtained in liquid solution are demonstrated.