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Issue 8, 2011
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Nanostructures of tetranuclear copper(I) complexes with short Cu(I)⋯Cu(I) contacts: crystallization-induced emission enhancement

Yong Chen,ab  Jun-Li Li,c  Glenna So Ming Tong,b  Wei Lu,b  Wen-Fu Fu,*ac  Siu-Wai Laib  and  Chi-Ming Che*b 
Author affiliations

* Corresponding authors

a Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
E-mail: fuwf@mail.ipc.ac.cn

b Department of Chemistry, Institute of Molecular Functional Materials, and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, P. R. China
E-mail: cmche@hku.hk

c College of Chemistry and Engineering, Yunnan Normal University, Kunming, P. R. China

Abstract

Tetranuclear copper(I) complexes containing N,N′-bis(5,7-dimethyl-1,8-naphthyridine-2-yl)amine and phosphine ligands with close intramolecular Cu(I)⋯Cu(I) contacts were found to precipitate as thermodynamically stable and crystalline quasi-2D sheet-like nanostructures. Kinetically stable, amorphous, spherical particles were also identified during the precipitation/crystallization processes of these copper(I) complexes in a dichloromethane/hexane mixture. The distinct phosphorescent properties of these two forms of nanostructures were studied and a crystallization-induced emission enhancement was observed during the morphological evolution from amorphous spherical particles to crystalline nanosheets. All of these photophysical properties were rationalized by density functional theory calculations.

Graphical abstract: Nanostructures of tetranuclear copper(i) complexes with short Cu(i)⋯Cu(i) contacts: crystallization-induced emission enhancement

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Publication details

The article was received on 29 Nov 2010, accepted on 30 Apr 2011 and first published on 10 Jun 2011


Article type: Edge Article
DOI: 10.1039/C0SC00597E
Citation: Chem. Sci., 2011,2, 1509-1514
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    Nanostructures of tetranuclear copper(I) complexes with short Cu(I)⋯Cu(I) contacts: crystallization-induced emission enhancement

    Y. Chen, J. Li, G. S. M. Tong, W. Lu, W. Fu, S. Lai and C. Che, Chem. Sci., 2011, 2, 1509
    DOI: 10.1039/C0SC00597E

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