Two-photon absorption properties of heterafluorenes and spirobiheterafluorenes bearing aminostyryl arms.
A phosphoniafluorene and a spirobiphosphoniafluorene bearing 4-(diethylamino)styryl groups were synthesized. These compounds exhibited bathochromically shifted absorption and emission, compared with their silicon analogues, because of the strong acceptor property of the phosphonium core. They also showed enhanced two-photon absorptions at around 930 nm.
Agou
Tomohiro
T
Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Hossain
Md Delwar
MD
Kawashima
Takayuki
T
Kamada
Kenji
K
Ohta
Koji
K
D000042:Absorption; D005449:Fluorenes / Q000737:chemistry*; D017785:Photons; D013057:Spectrum Analysis; D013141:Spiro Compounds / Q000737:chemistry; D013343:Styrenes / Q000737:chemistry
D005449:Fluorenes; D013141:Spiro Compounds; D013343:Styrenes