Chiral molecular squares based on angular bipyridines: Self-assembly, characterization, and photophysical properties

被引：39

作者：

Lee, SJ ^{[1
]}

Kim, JS ^{[1
]}

Lin, WB ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 21期

关键词：

D O I：

10.1021/ic0497937

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Chiral molecular squares 1-12 based on [M(dppe)](2+) metallocorners (M = Pd or Pt, and dppe = bis-(diphenylphosphino)ethane) and new angular bipyridine bridging ligands derived from the 1,1'-binaphthyl framework were readily assembled and characterized by a variety of techniques including infrared, UV-vis, circular dichroism (CD), and NMR spectroscopy, and ESI mass spectrometry. All these chiral metallocycles are highly luminescent in solution at room temperature with quantum efficiency of 0.06-0.63. Interestingly, when equal molar enantiopure molecular squares of opposite handedness were mixed in solution, a new meso dimeric metallocycle with C-2 symmetry formed. This result indicates the lability of the M-pyridyl bonds in these metallocycles, which may hinder their applications in many enantioselective processes.

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页码：6579 / 6588

页数：10

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