Graphene Oxide-Polythiophene Hybrid with Broad-Band Absorption and Photocatalytic Properties.
Hybrid graphene oxide (GO)/poly(3-hexylthiophene-2,5-diyl) (P3HT) sheets are assembled via π-π interaction and carefully isolated from the nonreacted precursors. The mutual influence of the two phases can be sharply manifested in this layer-to-layer configuration because it is undiluted by excess of one phase. To investigate the optical properties of the hybrid and possible synergistic interactions, we applied photothermal deflection spectroscopy (PDS) and pump-probe techniques. For the first time, the photocatalytic performance of these hybrids was investigated to correlate with their optical properties. The GO-P3HT hybrid demonstrates broad-band absorption and ultrafast charge transfer (1.4 ps) and acts as an excellent photocatalyst for the Mannich reaction (93% yield).
†Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Shuai
S
Wang
†Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.|‡NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences #05-01, 28 Medical Drive, Singapore 117456.
Chang Tai
CT
Nai
†Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Xiao-Fang
XF
Jiang
†Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Yuanhang
Y
Pan
Choon-Hong
CH
Tan
⊥IMEC-IMOMEC, Institute for Materials Research, Hasselt University, Wetenschapspark 1, B 3590 Diepenbeek, Belgium.
Milos
M
Nesladek
†Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Qing-Hua
QH
Xu
†Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.|∥Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST), Unist-gil 50, Ulsan 689-798, South Korea.
Kian Ping
KP
Loh
broad-band absorption; graphene oxide; hybrid materials; photocatalysis; ultrafast charge transfer