Issue 10, 2012
From the journal:

CrystEngComm

Hyperbranched microspheres formed by an EDTA-based coordination polymer with ternary architectures assembled by ultrathin nanoribbons and their tricolor luminescent properties†

Ming Yang,a   Tiehong Chen,c   Zhongqing Wei,d   Min Li,d   Huichao Bi,a   Qingdao Zeng,*b   Zhurui Shen*a  and  Yongtao Shen*a  

* Corresponding authors

a Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University & School of Material Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
E-mail: shenzhurui@tju.edu.cn, shenyt@tju.edu.cn

b National Center for Nanoscience and Technology, 11 Zhongguancun Beiyitiao, Beijing 100190, P. R. China
E-mail: zengqd@nanoctr.cn

c Key Laboratory of Energy–Material Chemistry and Engineering Research Center of Energy Storage & Conversion (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China

d Institute of High Energy Physics, Chinese Academy of Sciences, CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety, Beijing 100049, P. R. China

Abstract

Here we report a novel structure of hierarchical coordination polymers with hyperbranched microspheres. The microspheres were formed by the automatic piling of ultrathin nanoribbons with a thickness of 3.5 ± 0.1 nm, which resulted from the prior self-assembly of the molecules in a ternary architecture. Briefly, the ultrathin nanoribbons of the lanthanide–EDTA coordination polymers were prepared via an Ostwald ripening process, by a simple hydrothermal treatment in an aqueous mixture of lanthanide cations and EDTA-2Na ligands. To satisfy the requirement of a low surface/interface energy, these ultrathin nanoribbons were then self-assembled into multi-layer nanoribbons, followed by the formation of hyperbranched microspheres. Finally, tricolor (red, green and blue, known as RGB) fluorescent hyperbranched microspheres were also prepared by doping with Eu3+, Tb3+ and Zn2+ as luminescent centers, respectively. Our work shows a simple method to fabricate complex structures of coordination polymers and may inspire further studies on hierarchical architectures of coordination polymers.

Graphical abstract: Hyperbranched microspheres formed by an EDTA-based coordination polymer with ternary architectures assembled by ultrathin nanoribbons and their tricolor luminescent properties

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Article information

DOI
https://doi.org/10.1039/C2CE06704H
Article type
Paper
Submitted
20 Dec 2011
Accepted
22 Feb 2012
First published
23 Feb 2012

CrystEngComm, 2012,14, 3653-3657

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Hyperbranched microspheres formed by an EDTA-based coordination polymer with ternary architectures assembled by ultrathin nanoribbons and their tricolor luminescent properties

M. Yang, T. Chen, Z. Wei, M. Li, H. Bi, Q. Zeng, Z. Shen and Y. Shen, CrystEngComm, 2012, 14, 3653 DOI: 10.1039/C2CE06704H

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