Fluorescence control on panchromatic spectra via c-alkylation on arylated quinoxalines.
A coherent green fluorescence was obtained by butylation at the 2-position of panchromatic 2,3-diaryl-5,8-diarylquinoxalines (2) to give corresponding 2-butyl-2,3-diaryl-5,8-diaryl-1H-quinoxalines (3). Full color quinoxaline derivatives (2) were prepared from electronic modification at either the 2,3- or 5,8-positions at the peripheral ArX group or X group (X = -H, -OMe, -NPh(2), -NMe(2), -NMePh) of the quinoxalines. 2-Butylation converted one imine unit of the pyrazine ring to an amine group, which effectively altered the electron donor and acceptor functions to produce a coherent green fluorescence.
Son
Ho-Jin
HJ
Department of Materials Chemistry, Sejong Campus, Korea University, Chung-Nam 339-700, South Korea.
Han
Won-Sik
WS
Yoo
Dae-Hwan
DH
Min
Kyoung-Tae
KT
Kwon
Soon-Nam
SN
Ko
Jaejung
J
Kang
Sang Ook
SO