Design, Synthesis, and Use of Y-Shaped ATRP/NMP Surface Tethered Initiator

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• 作者：David R. Calabrese ; David Ditter ; Clemens Liedel ; Amit Blumfield ; Rudolf Zentel ; Christopher K. Ober
• 刊名：ACS Macro Letters
• 出版年：2015
• 出版时间：June 16, 2015
• 年：2015
• 卷：4
• 期：6
• 页码：606-610
• 全文大小：284K
• ISSN：2161-1653

文摘

Heterogeneous polymer brushes on surfaces can be easily formed from a binary initiator on a silicon oxide substrate where two different types of polymers can be grown side-by-side. Herein, we designed a new Y-shaped binary initiator using straightforward chemistry for 鈥済rafting from鈥?polymer brushes. This initiator synthesis takes advantage of the Passerini reaction, a multicomponent reaction combining two initiator sites and one surface linking site. This Y-shaped binary initiator can be synthesized in three steps with a higher yield than other similar initiators reported in the literature, and can be performed on a multigram scale. We were able to attach the initiator to a silicon oxide substrate and successfully grow polymer brushes from both initiators (separately and in combination), confirmed by NEXAFS, AFM, and contact angle.