title: A new class of laser dyes, 2-oxa-bicyclo[3.3.0]octa-4,8-diene-3,6-diones, with unity fluorescence yield.
abstract: A new class of highly fluorescent dyes, 4,8-diphenyl-2-oxa-bicyclo[3.3.0]octa-4,8-diene-3,6-diones (1a-c), have been synthesized, they all exhibit unity fluorescence quantum yield and short radiative lifetime (< 4 ns) in common organic solvents and have demonstrated remarkable amplified spontaneous emission with a gain efficiency of > 10.
authors.affiliation: Department of Chemistry and Instrumentation Center, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Chao-Yu
authors.initials: CY
authors.lastname: Wang
authors.forename: Yu-Shan
authors.initials: YS
authors.lastname: Yeh
authors.forename: Elise Y
authors.initials: EY
authors.lastname: Li
authors.forename: Yi-Hong
authors.initials: YH
authors.lastname: Liu
authors.forename: Shiuh-Ming
authors.initials: SM
authors.lastname: Peng
authors.forename: Shiuh-Tzung
authors.initials: ST
authors.lastname: Liu
authors.forename: Pi-Tai
authors.initials: PT
authors.lastname: Chou