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- Title
Synthesis and Photophysical Studies of Calixarene-Based Alkynylplatinum(II) Terpyridine Complexes with Various Receptor Sites for Colorimetric and Luminescence Sensing of Anions.
- Authors
Hau, Franky Ka‐Wah; Lo, Hiu‐Suet; Yam, Vivian Wing‐Wah
- Abstract
A series of mononuclear and dinuclear platinum(II) terpyridine complexes with amide-, sulfonamide-, and urea-containing ligands ( 1- 9) has been successfully designed and synthesized, and their photophysical and anion-binding properties have been studied. The anion-binding properties of the complexes were studied by electronic absorption, emission, and 1H NMR spectroscopy. Upon the binding with anions, the dinuclear complexes 1- 3 exhibit large electronic absorption and emission spectral changes, while for the mononuclear analogues 4- 6 much smaller spectral changes were observed. Interesting colorimetric responses towards different anions were observed in dinuclear complexes 1- 3. Dinuclear complexes 7- 9 are found to be insensitive to anion-binding, which could be attributed to the presence of intramolecular Pt⋅⋅⋅Pt interactions and/or π-π stacking in the complexes that led to the reduced anion-binding affinity.
- Subjects
PYRIDINE synthesis; PLATINUM compound synthesis; CALIXARENES; HOST-guest chemistry; PYRIDINE spectra; COLORIMETRY; LUMINESCENCE; LIGANDS (Chemistry)
- Publication
Chemistry - A European Journal, 2016, Vol 22, Issue 11, p3738
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201503401