Dual-responsive polypseudorotaxanes based on block-selected inclusion between polyethylene-block-poly(ethylene glycol) diblock copolymers and 1,4-diethoxypillar[5]arene

Jianzhuang Chen; Nan Li; Yongping Gao; Fugen Sun; Jianping He; Yongsheng Li

doi:10.1039/C5SM01641J

Dual-responsive polypseudorotaxanes based on block-selected inclusion between polyethylene-block-poly(ethylene glycol) diblock copolymers and 1,4-diethoxypillar[5]arene

Jianzhuang Chen,^a Nan Li,^a Yongping Gao,^a Fugen Sun,^a Jianping He^a and Yongsheng Li*^a

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* Corresponding authors

^a Laboratory of Low-Dimensional Materials Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
E-mail: ysli@ecust.edu.cn
Fax: +86-021-6425-2599
Tel: +86-021-6425-0740

Abstract

Based on the selective recognition of the polyethylene (PE) block of polyethylene-block-poly(ethylene glycol) (PE-b-PEG) by 1,4-diethoxypillar[5]arene (DEP5A), two novel thermo and competitive guest (1,4-dibromobutane or hexanedinitrile) responsive polypseudorotaxanes (PPRs) have been successfully constructed. The formation of PPRs both in solution and in the solid state was demonstrated by ¹H NMR, 2D NOESY, and WAXD analyses. TGA data illustrate that PPRs exhibit higher thermal stability than their precursor diblock copolymers. Moreover, intriguing porous disk-like aggregates are produced by electrospraying of PPRs in CHCl₃ and the self-assembled structures of PPRs are totally changed by the addition of 1,4-dibromobutane or hexanedinitrile, demonstrating their competitive guest stimuli-responsiveness.

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Publication details

The article was received on 04 Jul 2015, accepted on 21 Aug 2015 and first published on 24 Aug 2015

Article type: Paper

DOI: 10.1039/C5SM01641J

Author version available: Download Author version (PDF)

Citation: Soft Matter, 2015,11, 7835-7840

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Dual-responsive polypseudorotaxanes based on block-selected inclusion between polyethylene-block-poly(ethylene glycol) diblock copolymers and 1,4-diethoxypillar[5]arene

J. Chen, N. Li, Y. Gao, F. Sun, J. He and Y. Li, Soft Matter, 2015, 11, 7835
DOI: 10.1039/C5SM01641J
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Soft Matter

Dual-responsive polypseudorotaxanes based on block-selected inclusion between polyethylene-block-poly(ethylene glycol) diblock copolymers and 1,4-diethoxypillar[5]arene

Abstract

Supplementary files

Publication details

Dual-responsive polypseudorotaxanes based on block-selected inclusion between polyethylene-block-poly(ethylene glycol) diblock copolymers and 1,4-diethoxypillar[5]arene

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