STUDIES ON PHOTOSTABILITY OF NOVEL LASER COPOLYMERS BASED ON MODIFIED RHODAMINE 6G

doi:10.7517/j.issn.1674-0475.2002.01.1

Abstract

Abstract: Modified rhodamine 6G molecules (Rh-Al or Rh-Aln)with polymerizable double bonds had been copolymerized with 1,8-naphthalimide derivatives.We report on their photostability in solid film.The photodegradation kinetics of novel laser copolymers based on modified rhodamine 6G and 1,8-naphthalimide has been studied by UV-Vis absorption spectroscopy.The results show that the rates of the photofading reactions of the novel laser copolymers follow quasi-first-order kinetic process.In copolymers PRNAM(N-ally-rhodamine 19/N-(2-acryloylethoxyl)-1,8-naphthalimide/methyl methacrylate copolymer),naphthalimide moieties are connected to rhodamine moieties at nitrogen atom of rhodamine moiety, and naphthalimide moieties are connected to rhodamine moieties at ester group of rhodamine moiety in copolymers PRNM(ally ester of rhodamine 19/N-(2-acryloylethoxyl)-1,8-naphthalimide/methyl methacrylate copolymer).The photostability of PRNAM is far superior to that of PRNM and PRM(ally ester of rhodamine 19/methyl methacrylate copolymer).

Key words: photostability, rhodamine 6G, laser dyes, copolymers

CLC Number:

YANG Song-jie, HE Yuan-jun, TIAN He. STUDIES ON PHOTOSTABILITY OF NOVEL LASER COPOLYMERS BASED ON MODIFIED RHODAMINE 6G[J]. Imaging Science and Photochemistry, 2002, 20(1): 1-9.

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