Switchable platinum-based tweezers with Pt-Pt bonding and selective luminescence quenching

被引：29
作者：
Doistau, Benjamin [1 ,2 ]
Rossi-Gendron, Caroline [1 ,2 ]
Tron, Arnaud [3 ]
McClenaghan, Nathan D. [3 ]
Chamoreau, Lise-Marie [1 ,2 ]
Hasenknopf, Bernold [1 ,2 ]
Vives, Guillaume [1 ,2 ]
机构：
[1] Univ Paris 06, Sorbonne Univ, Inst Parisien Chim Mol, UMR 8232, F-75005 Paris, France
[2] CNRS, Inst Parisien Chim Mol, UMR 8232, F-75005 Paris, France
[3] Univ Bordeaux, CNRS, ISM, UMR 5255, F-33400 Talence, France
来源：
DALTON TRANSACTIONS | 2015年 / 44卷 / 18期
关键词：
ALKYNYLPLATINUM(II) TERPYRIDINE SYSTEM; DYNAMIC CHEMICAL-DEVICES; DOT-M INTERACTIONS; MOLECULAR TWEEZERS; STACKING INTERACTIONS; METAL-COMPLEXES; MOTION; EMISSION; PT(II); ARCHITECTURES;
D O I：
10.1039/c4dt03230f
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Molecular tweezers incorporating peripheral platinum salphen complexes and a central chelating terpyridine group have been synthesized. The terpyridine can be switched upon metal binding between a free 'W' shaped form and a coordinated 'U' form. The crystallographic structure of the zinc-closed molecular tweezers was obtained and presented a strong pi-stacking between the Pt-salphen units associated with a Pt-Pt bond. The luminescence properties, notably in response to selected guest ions (Zn2+, Pb2+, Hg2+) and the resulting mechanical motion, have been investigated by UV-Vis and emission spectroscopy. While ion coordination to the terpy resulted in no significant changes in the luminescence, a selective intercalation of a second Hg2+ associated with a large differential quenching was observed.
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收藏
页码：8543 / 8551
页数：9
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