In Situ Gel-to-Crystal Transition and Synthesis of Metal Nanoparticles Obtained by Fluorination of a Cyclic beta-Aminoalcohol Gelator

doi:10.1002/chem.201202615

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	In Situ Gel-to-Crystal Transition and Synthesis of Metal Nanoparticles Obtained by Fluorination of a Cyclic beta-Aminoalcohol Gelator
	Xu, Yang 1,2; Kang, Chuanqing 1; Chen, Yu 1; Bian, Zheng 1; Qiu, Xuepeng 1; Gao, Lianxun 1; Meng, Qingxin 2
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2012-12-01
卷号	18 期号:52 页码:16955-16961
关键词	Fluorine Gels Gel-to-crystal Transition Nanoparticles Self-assembly
ISSN号	0947-6539
DOI	10.1002/chem.201202615
英文摘要	A new fluorinated version of a cyclic beta-aminoalcohol gelator derived from 1,2,3,4-tetrahydroisoquinoline is presented. The gelator is able to gel various nonprotic solvents through OH center dot center dot center dot N hydrogen bonds and additional CH center dot center dot center dot F interactions due to the introduction of fluorine. A bimolecular lamellar structure is formed in the gel phase, which partly preserves the pattern of molecular organization in the single crystal. The racemate of the chiral gelator shows lower gelation ability than its enantiomer because of a higher tendency to form microcrystals, as shown by X-ray diffraction analysis. The influence of fluorination on the self-assembly of the gelator and the properties of the gel was investigated in comparison to the original fluorine-free gel system. The introduction of fluorine brings two new features. The first is good recognition of o-xylene by the gelator, which induces an in situ transition from gels of o-xylene and of an o-xylene/toluene mixture to identical single crystals with unique tubular architecture. The second is the enhanced stability of the toluene gel towards ions, including quaternary ammonium salts, which enables the preparation of a stable toluene gel in the presence of chloroaurate or chloroplatinate. The gel system can be used as a template for the synthesis of spherical gold nanoparticles with a diameter of 5 to 9 nm and wormlike platinum nanostructures with a diameter of 2 to 3 nm and a length of 5 to 12 nm. This is the first example of a synthesis of platinum nanoparticles in an organogel medium. Therefore, the appropriate introduction of a fluorine atom and corresponding nonbonding interactions into a known gelator to tune the properties and functions of a gel is a simple and effective tactic for design of a gel system with specific targets.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000312552300038
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/47351]
专题	中国科学院化学研究所
通讯作者	Kang, Chuanqing
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Changchun Univ Technol, Dept Polymer Mat, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yang,Kang, Chuanqing,Chen, Yu,et al. In Situ Gel-to-Crystal Transition and Synthesis of Metal Nanoparticles Obtained by Fluorination of a Cyclic beta-Aminoalcohol Gelator[J]. CHEMISTRY-A EUROPEAN JOURNAL,2012,18(52):16955-16961.
APA	Xu, Yang.,Kang, Chuanqing.,Chen, Yu.,Bian, Zheng.,Qiu, Xuepeng.,...&Meng, Qingxin.(2012).In Situ Gel-to-Crystal Transition and Synthesis of Metal Nanoparticles Obtained by Fluorination of a Cyclic beta-Aminoalcohol Gelator.CHEMISTRY-A EUROPEAN JOURNAL,18(52),16955-16961.
MLA	Xu, Yang,et al."In Situ Gel-to-Crystal Transition and Synthesis of Metal Nanoparticles Obtained by Fluorination of a Cyclic beta-Aminoalcohol Gelator".CHEMISTRY-A EUROPEAN JOURNAL 18.52(2012):16955-16961.