私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:群英聚首 > 論文著作 > 正文
[Soft Matter] Synthesis of azide/alkyne-terminal polymers and application for surface functionalisation through a [2+3] Huisgen cycloaddition process, "click chemistry''
來源:陳高健研究員個人網站 發布日期:2009-12-23
作者:CHEN, GJ; TAO, L; MANTOVANI, G; et al.
關鍵字:click, surface modification, polymer
論文來源:期刊
具體來源:Soft Matter, 2007, 3, 732 - 739
發表時間:2007年

Living radical polymerization of methyl methacrylate (MMA) and a fluorescent comonomer with 2-bromo-2-methylpropionic acid 3-azidopropyl ester and 2-bromo-2-methylhept-6-yn-3-one as initiators has been successfully employed for the synthesis of fluorescently tagged azide and alkyne terminated PMMA with Mn close to that predicted, PDI < 1.20, and good first order kinetics as expected for a living polymerisation. Cotton and organic resin surfaces have been functionalised with alkyne groups using a condensation with 4-chlorocarbonylbutyric acid prop-2-ynyl ester. The surfaces have been further modified using a Huisgen [2 + 3] cycloaddition (click) reaction of polymeric and small molecule azides. Different functional azides, mono azido-PEG and a new fluorescent hostasol derivative have been prepared and tested as model substrates for cotton surface modification. FTIR, tensiometry, FE-SEM and confocal spectroscopy have been used to characterize the modified surfaces. Tensiometry shows an increase in the hydrophobicity of the surface; verified by FE-SEM which shows a change in surface morphology. The use of the fluorescence label allows fluorescent and confocal microscopy to demonstrate the surface reactions. This approach is shown to be very general allowing soft and hard surfaces with different geometries to be modified. In particular it is an excellent method to alter the nature of organic resins allowing the incorporation of many different functionalities.

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 涡阳县| 南汇区| 密山市| 汉源县| 石台县| 夏邑县| 德州市| 和硕县| 峡江县| 宝清县| 元江| 文山县| 凤庆县| 潢川县| 永定县| 阿尔山市| 昌黎县| 永宁县| 绥江县| 湖南省| 广德县| 香港| 繁峙县| 佛山市| 维西| 灵璧县| 巫溪县| 新宾| 广德县| 姚安县| 湖口县| 连南| 双鸭山市| 大足县| 抚顺市| 青岛市| 衡南县| 芒康县| 冷水江市| 南澳县| 达拉特旗|