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Natural Born Laser Dyes: Excited-State Intramolecular Proton Transfer (ESIPT) Emitters and Their Use in Random Lasing Studies.

ABSTRACT: A series of five excited-state intramolecular proton transfer (ESIPT) emitters based on a 2-(2'-hydroxyphenyl) benzoxazole (HBO) scaffold, functionalized with a mono-or bis-(trialkylsilyl) acetylene extended spacer are presented. Investigation of their photophysical properties in solution and in the solid-state in different matrix, along with ab initio calculations gave useful insights into their optical behavior. Random lasing studies were conducted on a series of PMMA doped thin films, showing the presence of stimulated emission above the threshold of pumping energy density (ρth ≈ 0.5-2.6 mJ cm-2). In this work, the similarity of four level laser systems is discussed in light of the ESIPT photocycle.

SUBMITTER: Massue J 

PROVIDER: S-EPMC6723810 | biostudies-other | 2019 Jul

REPOSITORIES: biostudies-other

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Natural Born Laser Dyes: Excited-State Intramolecular Proton Transfer (ESIPT) Emitters and Their Use in Random Lasing Studies.

Massue Julien J   Pariat Thibault T   M Vérité Pauline P   Jacquemin Denis D   Durko Martyna M   Chtouki Tarek T   Sznitko Lech L   Mysliwiec Jaroslaw J   Ulrich Gilles G  

Nanomaterials (Basel, Switzerland) 20190730 8

A series of five excited-state intramolecular proton transfer (ESIPT) emitters based on a 2-(2'-hydroxyphenyl) benzoxazole (HBO) scaffold, functionalized with a mono-or bis-(trialkylsilyl) acetylene extended spacer are presented. Investigation of their photophysical properties in solution and in the solid-state in different matrix, along with ab initio calculations gave useful insights into their optical behavior. Random lasing studies were conducted on a series of PMMA doped thin films, showing  ...[more]