Single Chain Self-Assembly of Well-Defined Heterotelechelic Polymers Generated by ATRP and Click Chemistry Revisited

被引：46

作者：

Altintas, Ozcan ^{[1
]}

Rudolph, Tobias ^{[1
]}

Barner-Kowollik, Christopher ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Tech Chem & Polymerchem, D-76128 Karlsruhe, Germany

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2011年 / 49卷 / 12期

关键词：

atom transfer radical polymerization (ATRP); click chemistry; cyanuric acid; diaminopyridine; dynamic light scattering; Hamilton wedge; host-guest systems; polymer synthesis; poly(styrene); single chain self-folding; self-assembly; telechelics; thymine; TRANSFER RADICAL POLYMERIZATION; RUTHENIUM(II); COPOLYMERS; COMPLEXES;

D O I：

10.1002/pola.24688

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Well-defined heterotelechelic poly(styrene) carrying thymine/diaminopyridine (DAP) (Mn, SEC 9300, PDI 1.04) and Hamilton wedge (HW)/cyanuric acid (CA) (Mn, SEC 8200, PDI 1.04) bonding motifs are prepared via a combination of controlled/living radical polymerization and copper catalyzed azide/alkyne "click'' chemistry and are subsequently self-assembled as single chains to emulate-on a simple level-the self-folding behavior of natural biomacromolecules. Hydrogen nuclear magnetic resonance (H-1 NMR) in deuterated dichloromethane and dynamic light scattering analyses provides evidence for the hydrogen bonding interactions between the athymine and omega-DAP as well as alpha-CA and omega-HW chain ends of the heterotelechelic polymers leading to circular entropy driven single chain self-assembly. This study demonstrates that the choice of NMR solvent is important for obtaining well-resolved NMR spectra of the self-assembled structures. In addition, steric effects on the HW can affect the efficiency of the self-assembly process. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 2566-2576, 2011

引用

页码：2566 / 2576

页数：11

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