Premium
Change of Boron Substitution Improves the Lasing Performance of Bodipy Dyes: A Mechanistic Rationalisation
Author(s) -
Jagtap Krishna K.,
Shivran Neelam,
Mula Soumyaditya,
Naik Devidas B.,
Sarkar Sisir K.,
Mukherjee Tulsi,
Maity Dilip K.,
Ray Alok K.
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201202699
Subject(s) - bodipy , boron , substitution (logic) , rationalisation , lasing threshold , chemistry , photochemistry , materials science , organic chemistry , optoelectronics , computer science , fluorescence , physics , optics , mathematics , geometry , programming language , wavelength
Bodipy laser dyes are highly efficient but degrade rapidly in solution by reacting with in situ generated singlet oxygen ( 1 O 2 ). To increase the lasing lifetimes of these dyes, we have designed and synthesised two different congeners of the widely studied Pyrromethene 567 (PM567) by substitution at the boron centre and/or at both the boron centre and the meso position. The two new dyes showed high lasing efficiencies with increased photostability. The results of theoretical and pulse radiolysis studies revealed that the substitution at the boron centre reduced the 1 O 2 generation capacity of these dyes as well as their rate of reaction with 1 O 2 , thereby enhancing their lifetimes even under lasing conditions.