Solvent dependent triphenylamine based D-(pi-A)n type dye molecules and optical properties.
D-(pi-A)n type dyes of triphenylamine derivatives were synthesized and their absorption and luminescence in different solvents were examined to investigate solvent dependent properties observed for their emissions in solvents with different dielectric constants. The emission wavelengths showed a dramatic blue shift with increasing solvent polarity. The results of molecular orbital calculations by computer simulation, based on Material Studio suite of programs, were found to reasonably account for the spectral properties. Relative levels of HOMO and LUMO were measured and calculated and all derivatives exhibited strong solid fluorescence with distinctively different FWHMs.
Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon, 305-764, South Korea.
Xiaochuan
X
Li
Young-A
YA
Son
Young-Sung
YS
Kim
Sung-Hoon
SH
Kim
Jun
J
Kun
Jong-Il
JI
Shin