Clickable poly(ionic liquid)s for modification of glass and silicon surfaces

被引：31
作者：
He, Hongkun [1 ,2 ]
Averick, Saadyah [1 ]
Roth, Elliot [2 ]
Luebke, David [2 ]
Nulwala, Hunaid [1 ,2 ]
Matyjaszewski, Krzysztof [1 ,2 ]
机构：
[1] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA
[2] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA
来源：
POLYMER | 2014年 / 55卷 / 16期
基金：
美国国家科学基金会;
关键词：
Poly(ionic liquid)s; ATRP; Click chemistry; TRANSFER RADICAL POLYMERIZATION; BLOCK-COPOLYMERS; POLY(ETHYLENE GLYCOL); IONIC LIQUIDS; CHEMISTRY; POLYMERS; THIOL; BRUSHES; ATRP; FUNCTIONALIZATION;
D O I：
10.1016/j.polymer.2014.01.045
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Covalent attachment of poly(ionic liquid)s (PILs) by click chemistry on glass or silicon (Si) surfaces was performed. Poly[1-(4-vinylbenzyl)-3-butylimidazolium bis(trifluorcimethylsulfonyl)imide] (poly-VBBI+Tf2N-), and copolymers of polyVBBI(+)Tf(2)N(-) with fluorescein O-methacrylate were synthesized by conducting an atom transfer radical polymerization (ATRP) from initiators containing azide or thioacetate groups. The azide- and thiol-terminated PILs were then successfully grafted onto alkyne and alkene modified glass/Si wafers by thermal azide-alkyne cycloaddition and photoinitiated thiol-ene click reactions, respectively. The modified surfaces were characterized by contact angle measurements and ellipsometry. The fluorescent PIL functionalized surfaces showed strong fluorescence under UV irradiation. This procedure of tethering PILs to substrates also provides an easy way to change the surface hydrophilicity by replacing the anions in the grafted PILs. The present approach could be readily applied for surface modifications with other types of PILs or their copolymers to achieve different functionalities on various surfaces. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3330 / 3338
页数：9
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