A new class of laser dyes, 2-oxa-bicyclo[3.3.0]octa-4,8-diene-3,6-diones, with unity fluorescence yield.
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.
Wang
Chao-Yu
CY
Department of Chemistry and Instrumentation Center, National Taiwan University, Taipei 106, Taiwan.
Yeh
Yu-Shan
YS
Li
Elise Y
EY
Liu
Yi-Hong
YH
Peng
Shiuh-Ming
SM
Liu
Shiuh-Tzung
ST
Chou
Pi-Tai
PT