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Title: Kinetically controlled homogenization and transformation of crystalline fiber networks in supramolecular materials
Authors: Li, J.-L. 
Yuan, B. 
Liu, X.-Y. 
Wang, X.-G.
Wang, R.-Y. 
Issue Date: 6-Jul-2011
Source: Li, J.-L., Yuan, B., Liu, X.-Y., Wang, X.-G., Wang, R.-Y. (2011-07-06). Kinetically controlled homogenization and transformation of crystalline fiber networks in supramolecular materials. Crystal Growth and Design 11 (7) : 3227-3234. ScholarBank@NUS Repository.
Abstract: Supramolecular materials with three-dimensional fiber networks have applications in many fields. For these applications, a homogeneous fiber network is essential in order to get the desired performance of a material. However, such a fiber network is hard to obtain, particularly when the crystallization of fiber takes place nonisothermally. In this work, a copolymer is used to kinetically control the nucleation and fiber network formation of a small molecular gelling agent, N-lauroyl-l-glutamic acid di-n-butylamide (GP-1) in benzyl benzoate. The retarded nucleation and enhanced mismatch nucleation of the gelator by the additive leads to the conversion of a mixed fiber network into a homogeneous network consisting of spherulites only. The enhanced structural mismatch of the GP-1 during crystallization is quantitatively characterized using the rheological data. This effect also leads to the transformation of an interconnecting (single) fiber network of GP-1 into a multidomain fiber network in another solvent, isostearyl alcohol. The approach developed is significant to the production of supramolecular materials with homogeneous fiber networks and is convenient to switch a single fiber network to a multidomain network without adjusting the thermodynamic driving force. © 2011 American Chemical Society.
Source Title: Crystal Growth and Design
ISSN: 15287483
DOI: 10.1021/cg200501h
Appears in Collections:Staff Publications

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