Change of Boron Substitution Improves the Lasing Performance of Bodipy Dyes: A Mechanistic Rationalisation. Issue 2 (13th November 2012)

• Record Type: Journal Article
• Authors: Jagtap, Krishna K.; Shivran, Neelam; Mula, Soumyaditya; Naik, Devidas B.; Sarkar, Sisir K.; Mukherjee, Tulsi; Maity, Dilip K.; Ray, Alok K.
• Is Part Of: Chemistry. Volume 19:Issue 2(2013)
• Page Start: 702
• Page End: 708
• Publication Date: 2012-11-13
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201202699
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Bodipy laser dyes are highly efficient but degrade rapidly in solution by reacting with in situ generated singlet oxygen (¹O₂). 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 <italic>meso</italic> 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 ¹O₂ generation capacity of these dyes as well as their rate of reaction with ¹O₂, thereby enhancing their lifetimes even under lasing conditions.</p> </abstract>