Luminescence color change of a platinum(II) complex solid upon mechanical grinding

被引：118

作者：

Abe, Taichi ^{[1
]}

Itakura, Toru ^{[1
]}

Ikeda, Noriaki ^{[1
]}

Shinozaki, Kazuteru ^{[1
]}

机构：

[1] Yokohama City Univ, Grad Sch Integrated Sci, Dept Chem, Yokohama, Kanagawa 2360027, Japan

来源：

DALTON TRANSACTIONS | 2009年 / 04期

关键词：

BOOLEAN-AND-C; SPECTROSCOPIC PROPERTIES; ELECTRON-TRANSFER; EMISSION; EXCIMER; SPECTRA;

D O I：

10.1039/b811107c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The mechanochemical behavior of Pt(5dpb)Cl (5dpbH = 1,3-di(5-methyl-2-pyridyl)benzene) was investigated in terms of solid-state luminescence. The yellow luminescence of the crystalline complex changed to orange when grinding into. ne powder on a glass substrate with a spatula. A broad emission band, which was not detected for the crystal, was observed at around 670 nm for the powder. The powder X-ray diffraction (XRD) pattern was the same as that calculated from X-ray crystallographic data of the single crystal. A broad band appeared within 100 ns after laser excitation accompanied by quenching of the (3)(pi, pi*) emission of Pt(5dpb)Cl, which was then weakened with decreasing temperature and disappeared below 120 K. The phenomenon was very similar to the excimer formation observed in solution. A related complex, Pt(dpb)Cl (dpbH = 1,3-di(2-pyridyl)benzene), also exhibited luminescent mechanochromism. However, the broad emission that appeared upon grinding still remained at 77 K, and XRD showed that the ground sample of Pt(dpb)Cl was amorphous.

引用

页码：711 / 715

页数：5

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