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Controlling the supramolecular architecture of molecular gels with surfactants

Chen, J.Y., Yuan, B., Li, Z.Y., Tang, B., Ankers, E., Wang, X.G. and Li, J.L. 2016, Controlling the supramolecular architecture of molecular gels with surfactants, Langmuir, vol. 32, no. 4, pp. 1171-1177, doi: 10.1021/acs.langmuir.5b04384.

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Title Controlling the supramolecular architecture of molecular gels with surfactants
Author(s) Chen, J.Y.
Yuan, B.
Li, Z.Y.
Tang, B.
Ankers, E.
Wang, X.G.
Li, J.L.
Journal name Langmuir
Volume number 32
Issue number 4
Start page 1171
End page 1177
Total pages 7
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2016
ISSN 0743-7463
1520-5827
Summary Manipulating molecular assembly is significant for achieving materials with desirable performances. In this paper, two nonionic surfactants, Span 20 and Triton X-100, are used to tune the nucleation and fiber growth of a molecular gelator 2,3-di-n-decyloxyanthracene (DDOA). Confocal microscopic images show that Span 20 induces elongation of DDOA spherulites, and promotes fiber side branching. In contrast, Triton X-100 enhances the primary nucleation of DDOA leading to the formation of smaller DDOA spherulites, and promotes fiber tip branching. (1)H NMR investigation demonstrates strong interactions between the hydrophobic tails of the surfactants and the alkyl chains of DDOA molecules.The interactions significantly reduce the diffusion of DDOA molecules. The different effects of the two surfactants could be attributable to their different alkyl hydrophobic tails. The hydrophobic tail of Span 20 is similar to the alkyl chain of DDOA, which could promote the adsorption of Span 20 on the fiber side surface rich in alkyl chains of DDOA.While the benzene ring in the hydrophobic tail of Triton X-100 could facilitate the primary nucleation of DDOA and the adsorpion of Triton X-100 on the fiber tip surface rich in aromatic structure of DDOA. The observations of this work will help the development of a convenient approach to tune the fiber network structure of molecular gels.
Language eng
DOI 10.1021/acs.langmuir.5b04384
Field of Research 030399 Macromolecular and Materials Chemistry not elsewhere classified
Socio Economic Objective 859899 Environmentally Sustainable Energy Activities not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083426

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