Exceptionally large two- and three-photon absorption cross-sections by OPV organometalation.
Oligo(p-phenylenevinylene)s (OPVs) containing up to 8 PV units and end-functionalized by ruthenium alkynyl groups have been prepared and their nonlinear absorption properties assessed using the Z-scan technique and employing low repetition rate femtosecond pulses. Exceptionally large two-photon absorption (ca. 12 500 GM at 725 nm) and three-photon absorption cross sections (ca. 1.6 × 10(-76) cm(6) s(2) at 1100 nm) are found for the 8PV-containing example, highlighting the potential of an "organometalation" approach to NLO-efficient organic materials.
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China. mark.humphrey@jiangnan.edu.cn.
Beibei
B
Gao
Leszek M
LM
Mazur
Mahbod
M
Morshedi
Adam
A
Barlow
Huan
H
Wang
Cristóbal
C
Quintana
Chi
C
Zhang
Marek
M
Samoc
Marie P
MP
Cifuentes
Mark G
MG
Humphrey