Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32089
Title: The synthesis and photophysical studies of cyclometalated Pt(ii) complexes with C,N,N-ligands containing imidazolyl donors
Authors: Ho, YM
Koo, CK
Wong, KL
Kong, HK
Chan, CTL
Kwok, WM 
Chow, CF
Lam, MHW
Wong, WY
Issue Date: 2012
Publisher: Royal Society of Chemistry
Source: Dalton transactions : an international journal of inorganic chemistry, 2012, v. 41, no. 6, p. 1792-1800 How to cite?
Journal: Dalton transactions : an international journal of inorganic chemistry 
Abstract: Two new C,N,N-type ligands (HL 2 and HL 3), containing a C phenyl, a N pyridyl, and a N imidazolyl donor, and their cycloplatinated complexes, [Pt(L 2)Cl] (1), [Pt(L 3)Cl] (2), [Pt(L 2)(PPh 3)] + (3) and [Pt(L 3)(PPh 3)] + (4), have been successfully synthesized and characterized. Spectroscopic and 3MLCT luminescent properties of these Pt(ii) cyclometalated complexes were found to be pH dependent. This was attributed to the protonation/deprotonation of the acidic 1-imidazolyl-NH moieties on the ligands. All the cycloplatinated complexes (both protonated and deprotonated forms) possessed two-photon excitability with two-photon absorption cross-sections ranging from 6.0 to 30.0 GM (protonated forms) and from 16.2 to 24.9 GM (deprotonated forms).
URI: http://hdl.handle.net/10397/32089
ISSN: 1477-9226
EISSN: 1477-9234
DOI: 10.1039/c1dt11037c
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