Poster Presentation: S9- Supramolecular Chemistry and Self-Assembly: no. S9.P6published_or_final_versio

Chan, K

Cheng, HK

Chung, YSC

Yam, VWW

HKU Scholars Hub

TitleInduced Self-Assembly of Alkynylplatinum(II) Complexes byVariations of Solvent Compositions and Addition ofPolyelectrolytesAuthor(s) Cheng, HK; Chan, K; Chung, YSC; Yam, VWWCitation42nd International Conference on Coordination Chemistry(ICCC-42), Brest, France, 3-8 July 2016. In Poster PresentationsAbstract Book, p. 352Issued Date 2016URL http://hdl.handle.net/10722/243284Rights This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.International Conference on Coordination Chemistry, 2016, Brest, France  Induced Self-Assembly of Alkynylplatinum(II) Complexes by Variations of Solvent Compositions and Addition of Polyelectrolytes H.-K. Cheng, K. Chan, C. Y.-S. Chung, and V. W.-W. Yam* Institute of Molecular Functional Materials  (Areas of Excellence Scheme, University Grants Committee (Hong Kong))  and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong (P. R. China) wwyam@hku.hk  Water-soluble cationic alkynylplatinum(II) 2,6-bis(benzimidazol-2'-yl)pyridine (bzimpy) complexes have been synthesized and demonstrated to undergo self-assembly with anionic polyelectrolytes in aqueous buffer solution. The self-assembly processes have been shown to give rise to the formation of metalmetal-to-ligand charge transfer (MMLCT) absorptions and triplet MMLCT (3MMLCT) emissions. The supramolecular assemblies exhibit different photophysical properties and excited state chemistry, which has been rationized by the difference in Förster resonance energy transfer (FRET) efficiency, extent of polymermetal complex aggregate formation, photo-induced charge transfer (PCT), and Dexter triplet energy back transfer (TEBT) quenching.   In addition, a new class of amphiphilic platinum(II) terpyridine-based polymers has been prepared and demonstrated to give different morphologies in various solvent compositions. The morphological changes could induce drastic UV-vis and emission spectral changes due to the formation of Pt···Pt and SS interactions. The morphological changes have been studied by electron microscopy, UV-vis absorption, and emission spectroscopy.  1 K. Chan, C. Y. S. Chung, V. W. W. Yam, Chem. Eur. J., 2015, 21, 16434. 352

Induced Self-Assembly of Alkynylplatinum(II) Complexes by Variations of Solvent Compositions and Addition of Polyelectrolytes

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Induced Self-Assembly of Alkynylplatinum(II) Complexes by Variations of Solvent Compositions and Addition of Polyelectrolytes

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