Helical Transfer through Nonlocal Interactions.
A pair of chiral bola-type enantiomers, LL-12PyBr and DD-12PyBr, was synthesized. They can cause physical gels in pure water. Sol-gel transcriptions were carried out to control mesoporous 1,4- phenylene-silica nanostructures and helicity using the organic self-assemblies of these amphiphiles as temp...
| Publicado en: | Journal of the American Chemical Society Vol. 131; no. 16; pp. 5986 - 5994 |
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| Autores principales: | , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
4/29/2009
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=39794842&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 39794842 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 4/29/2009 vid: 131 iid: 16 pid: 997 pub: American Chemical Society artinfo: ui: 39794842 10.1021/ja9001376 ppf: 5986 ppct: 8 formats: tig: atl: Helical Transfer through Nonlocal Interactions. aug: au: Xiaojian Wu Sunjun Ji Yi Li Baozong Li Xiulin Zhu Kenji Hanabusa Yonggang Yang affil: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P.R. China Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan su: Enantioselective catalysis Enantiomers Nanostructures Silica Optical diffraction sug: subj: Enantioselective catalysis Enantiomers Nanostructures Silica Optical diffraction ab: A pair of chiral bola-type enantiomers, LL-12PyBr and DD-12PyBr, was synthesized. They can cause physical gels in pure water. Sol-gel transcriptions were carried out to control mesoporous 1,4- phenylene-silica nanostructures and helicity using the organic self-assemblies of these amphiphiles as templates. Under acidic conditions, left-handed helical 1,4-phenylene-silica bundles were prepared using the self-assemblies of LL-12PyBr as templates. Additionally, right-handed helical silica and 1,4- phenylene-silica bundles were prepared using the self-assemblies of DD-12PyBr as templates. Under basic conditions, 1,4-phenylene-silica bundles were also obtained. However, it is hard to determine the handedness. For all of the 1,4-phenylene-silica bundles, it is interesting to find that the aromatic rings are packing in helix within the wall of the pore channels. Powder X-ray diffraction patterns indicated that the aromaticrings of 1,4-phenylene-silica bundles prepared under basic conditions showed a greater degree of order than those of 1,4-phenylene-silica bundles prepared under acidic conditions. Moreover, helical silica, 1,3-phenylene-silica, ethene-silica, and ethane-silica bundles were also prepared using the self- assemblies LL-12PyBr and DD-12PyBr as templates. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2009 holdings: @attributes: islocal: N |
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