Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ho, Ming-Shou | en_US |
dc.contributor.author | Hsu, Chain-Shu | en_US |
dc.date.accessioned | 2014-12-08T15:08:07Z | - |
dc.date.available | 2014-12-08T15:08:07Z | - |
dc.date.issued | 2009-12-01 | en_US |
dc.identifier.issn | 0887-624X | en_US |
dc.identifier.uri | http://dx.doi.org/10.1002/pola.23702 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/6344 | - |
dc.description.abstract | Three kinds of chiral saccharide-containing liquid crystalline (LC) acetylenic monomers were prepared by click reaction between 2-azidoethyl-2,3,4,6-tetraacetyl-beta-D-galactopyranoside and 1-biphenylacetylene 4-alkynyloxybenzoate. The obtained monomers were polymerized by WCl(6)-Ph(4)Sn to form three side-chain LC polyacetylenes containing 1-[2-(2,3,4,6-tetraacetyl-beta-D-galactopyranos-1-yl)-ethyl]-1H-[1,2,3]-triazol-4'-biphenyl 4-alkynyloxybenzoate side groups. All monomers and polymers show a chiral smectic A phase. Self-assembled hiearchical superstructures of the chiral saccharide-containing LCs and LCPs in solution state were studied by field-emission scanning electron microscopy. Because of the LC behavior, the LC molecules exhibit a high segregation strength for phase separation in dilute solution (THF/H(2)O = 1:9 v/v). The self-assembled morphology of LC monomers was dependent upon the alkynyloxy chain length. Increasing the alkynyloxy chain length caused the self-assembled morphology to change from a platelet-like texture (LC-6) to helical twists morphology (LC-11 and LC-12). Furthermore, the helical twist morphological structure can be aligned on the polyimide rubbed glass substrate to form two-dimensional ordered helical patterns. In contrast to LC monomers, the LCP-11 self-assembled into much more complicate morphologies, including nanospheres and helical nanofibers. These nanofibers are evolved from the helical cables ornamented with entwining nanofibers upon natural evaporation of the solution in a mixture with a THF/methanol ratio of 3:7. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47:6596-6611, 2009 | en_US |
dc.language.iso | en_US | en_US |
dc.subject | liquid-crystalline polymers (LCP) | en_US |
dc.subject | polyacetylenes | en_US |
dc.subject | self-assembly | en_US |
dc.title | Synthesis and Hierarchical Superstructures of Side-Chain Liquid Crystal Polyacetylenes Containing Galactopyranoside End-Groups | en_US |
dc.type | Review | en_US |
dc.identifier.doi | 10.1002/pola.23702 | en_US |
dc.identifier.journal | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | en_US |
dc.citation.volume | 47 | en_US |
dc.citation.issue | 23 | en_US |
dc.citation.spage | 6596 | en_US |
dc.citation.epage | 6611 | en_US |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Applied Chemistry | en_US |
dc.identifier.wosnumber | WOS:000272455900024 | - |
dc.citation.woscount | 10 | - |
Appears in Collections: | Articles |
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