Synthesis of polymer organogelators using hydrogen bonding as physical cross-links

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• 作者：Xinjun Yu ; Xiaoping Chen ; Qinyuan Chai ; Neil Ayres
• 关键词：H ; bonding ; Organogels ; RAFT ; Upconversion
• 刊名：Colloid & Polymer Science
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：294
• 期：1
• 页码：59-68
• 全文大小：934 KB
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• 作者单位：Xinjun Yu (1)
  Xiaoping Chen (1)
  Qinyuan Chai (1)
  Neil Ayres (1)
  
  1. Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, OH, 45221, USA
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Physical Chemistry
  Soft Matter and Complex Fluids
  Characterization and Evaluation Materials
  Food Science
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-1536

文摘

The synthesis of a monomer containing fourfold hydrogen bonding groups 2-(((6-(6-methyl-4[1H]pyrimidionylureido)hexyl)carbamoyl)oxy)ethyl methacrylate (UPyEMA) and its copolymerization with either n-butyl acrylate, tert-butyl acrylate, or styrene using reversible addition-fragmentation chain transfer (RAFT) polymerization is reported. The copolymers possessed high molecular weight and narrow molecular weight distributions and formed stable organogels in both chloroform and 1,2-dichlorobezene. Critical gelation concentrations were determined and the rheology of the organogels characterized. A novel monomer containing pyrene was prepared, and its polymerization under RAFT control was demonstrated. The pyrene-containing monomer was copolymerized with the polymer organogelators forming fluorescent organogels. It is proposed that these gels are suitable for two-photon upconversion applications.