title: Functionalized platinum(II) terpyridyl alkynyl complexes as colorimetric and luminescence pH sensors.
abstract: A series of platinum(II) terpyridyl alkynyl complexes that have been derivatized with basic amino functionalities, [Pt(tpy)(C[triple bond]C-C6H4-NR2-4]X (X = OTf-, R = CH3 1, R = CH2CH2OCH3 2, R = H 3; X = Cl-, R = CH3 4, R = CH2CH2OCH3 5, R = H 6) (tpy = 2,2':6',2' '-terpyridine), have been synthesized and characterized. Their photophysical responses at various acid concentrations were studied. The abilities of the complexes to function as colorimetric and luminescence pH sensors were demonstrated with dramatic color changes and luminescence enhancement upon introduction of acid.
authors.affiliation: Centre for Carbon-Rich Molecular and Nano-Scale Metal-Based Materials Research, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Keith Man-Chung
authors.initials: KM
authors.lastname: Wong
authors.forename: Wing-Suen
authors.initials: WS
authors.lastname: Tang
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Lu
authors.forename: Nianyong
authors.initials: N
authors.lastname: Zhu
authors.forename: Vivian Wing-Wah
authors.initials: VW
authors.lastname: Yam