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Engineering molecular self-assembled fibrillar networks by ultrasound

Wang, Rong-Yao, Liu, Xiang-Yang and Li, Jing-Liang 2009, Engineering molecular self-assembled fibrillar networks by ultrasound, Crystal growth & design, vol. 9, no. 7, pp. 3286-3291, doi: 10.1021/cg9000494.

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Title Engineering molecular self-assembled fibrillar networks by ultrasound
Author(s) Wang, Rong-Yao
Liu, Xiang-Yang
Li, Jing-LiangORCID iD for Li, Jing-Liang orcid.org/0000-0003-0709-2246
Journal name Crystal growth & design
Volume number 9
Issue number 7
Start page 3286
End page 3291
Total pages 6
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2009-05-14
ISSN 1528-7483
1528-7505
Summary The architecture of self-organized three-dimensionally interconnected nanocrystal fibrillar networks has been achieved by ultrasound from a solution consisting of separate spherulites. The ultrasound stimulated structural transformation is correlated to the striking ultrasonic effects on turning nongelled solutions or weak gels into strong gels instantly, with enhancement of the storage modulus up to 3 magnitudes and up to 4 times more gelling capability. The basic principle involved in the ultrasound-induced structural transformation is established on the basis of the nucleation-and-growth model of a fiber network formation, and the mechanism of seeding multiplication, aggregation suppressing, and fiber distribution and growth promotion is proposed. This novel technique enables us to produce self-supporting gel functional materials possessing significantly modified macroscopic properties, from materials previously thus far considered to be “useless”, without the use of chemical stimuli. Moreover, it provides a general strategy for the engineering of self-organized fiber network architectures, and we are consequently able to achieve the supramolecular functional materials with controllable macroscopic properties.
Language eng
DOI 10.1021/cg9000494
Field of Research 091205 Functional Materials
030603 Colloid and Surface Chemistry
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039269

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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