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Kinetically controlled homogenization and transformation of crystalline fiber networks in supramolecular materials
journal contributionposted on 2011-07-06, 00:00 authored by Jingliang LiJingliang Li, B Yuan, X Y Liu, Xungai Wang, R Y Wang
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-nbutylamide (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.
JournalCrystal growth and design
Pagination3227 - 3234
PublisherAmerican Chemical Society
LocationWashington, D. C.
Publication classificationC1 Refereed article in a scholarly journal
Copyright notice2011, American Chemical Society
benzyl benzoatecrystalline fibersfiber networksgelatorsgelling agentshomogeneous networkisostearyl alcoholsmulti domainsmultidomain networksrheological datasingle fibersupramolecular materialsthermodynamic driving forcesScience & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryCrystallographyMaterials Science, MultidisciplinaryChemistryMaterials ScienceSOFT FUNCTIONAL MATERIALS12-HYDROXYSTEARIC ACIDORGANOGEL FORMATIONFIBRILLAR NETWORKSORGANIC LIQUIDSGELSNUCLEATIONARCHITECTUREMOLECULESInorganic Chemistry