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Non-covalent molecular tweezer/guest complexation with Pt(II)⋯Pt(II) metal–metal interactions: toward intelligent photocatalytic materials

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Abstract

A new organoplatinum(II) molecular tweezer with a stimuli-responsive 2,2′:6′,2′′-terpyridine spacer has been synthesized, which undergoes “U”- to “W”-shaped conformational transition upon adding Zn2+ ions. The molecular tweezer receptor displays a high binding affinity toward the complementary guests, with the implementation of Pt(II)⋯Pt(II) metal–metal interactions for the non-covalent tweezering systems. MMLCT absorbance simultaneously emerges in the visible-light region (470–620 nm), which can be sensitized by O2 and thereby utilized for photo-catalyzed reactions in organic and aqueous media. Moreover, temporally “on-demand” photo-catalytic efficiency can be accomplished, via the successive addition of Zn(OTf)2 and a competitive ligand to the supramolecular tweezering photosensitizers. Hence, the current study opens up new avenues toward intelligent photocatalytic materials via elaborate supramolecular engineering.

Graphical abstract: Non-covalent molecular tweezer/guest complexation with Pt(ii)⋯Pt(ii) metal–metal interactions: toward intelligent photocatalytic materials

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Publication details

The article was received on 14 Sep 2017, accepted on 16 Oct 2017 and first published on 18 Oct 2017


Article type: Research Article
DOI: 10.1039/C7QM00424A
Citation: Mater. Chem. Front., 2017, Advance Article
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    Non-covalent molecular tweezer/guest complexation with Pt(II)⋯Pt(II) metal–metal interactions: toward intelligent photocatalytic materials

    Z. Li, Y. Han, Z. Gao, T. Fu and F. Wang, Mater. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QM00424A

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