A supramolecular multi-block copolymer with a high propensity for alternation

被引：149

作者：

Park, Taiho ^{[1
]}

Zimmerman, Steven C. ^{[1
]}

机构：

[1] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 43期

关键词：

D O I：

10.1021/ja064116s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Alternating, multi-block supramolecular copolymers were created using quadruple hydrogen bonding as the noncovalent binding force. One block consisted of two guanosine butyl urea (UG) units attached at the ends of a triethylene glycol linker or a PEG chain (MW = 2 kD). The other block contained a 2,7-diamido-1,8-naphthyridine (DAN) unit at each end of a short alkane diester linker or a 100 kD poly(butyl methacrylate) macromolecule. The UG unit presents an ADDA hydrogen bonding array that is complementary to the DAAD array of DAN, and these form a very strong complex (Kassoc ∼ 5 × 107 M-1), whereas UG and DAN weakly self-associate. These recognition properties allowed a multi-block supramolecular polymer to form which exhibits a high propensity for alternation. The self-assembled polymeric structure was shown to be reversibly formed and it was characterized by a combination of dynamic light scattering (DLS), 1H NMR, size exclusion chromatography (SEC), and viscometry. Copyright © 2006 American Chemical Society.

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页码：13986 / 13987

页数：2

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