Solvent-induced aggregation through metal...metal/pi...pi interactions: large solvatochromism of luminescent organoplatinum(II) terpyridyl complexes.
A dramatic color change and tremendous emission enhancement have been "switched on" upon increasing diethyl ether ratio in acetonitrile or acetone solution of [Pt(tpy)(CC-CCH)]OTf, attributed to the formation of Pt...Pt and pi-pi interactions. Two crystal forms (dark-green and red) of [Pt(tpy)(CC-CCH)]OTf, together with [Pt(tBu3-tpy)(CC-CCH)]OTf, show different crystal-packing modes as revealed by X-ray crystallography.
Yam
Vivian Wing-Wah
VW
Center for Carbon-Rich Molecular and Nano-scale Metal-Based Materials Research and the Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P R China.
Wong
Keith Man-Chung
KM
Zhu
Nianyong
N