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pH-responsive host-guest polymerization and blending

机译：PH响应宿主 - 客人聚合和混合

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摘要

In this work, we demonstrate - in two different settings - the potential of the recognition motif made by tetraphosphonate cavitand/N-methyl ammonium salt for the development of supramolecular polymer chemistry. In the first part a novel pH sensitive supramolecular homopolymer was assembled by proper design of the corresponding monomer, and monitoring the self-assembling process by several analytical tools, including NMR spectroscopy and light scattering techniques. These measurements provided the evidence for the formation of the homopolymer and its pH responsiveness. In the second study, the two recognition groups - tetraphosphonate cavitand (Host) and sarcosine hydrochloride (Sarc) - introduced in polystyrene (PS-Host) and poly(butyl methacrylate) (PBMA-Sarc) respectively, led to the mixing of the two otherwise immiscible polymers thanks to the energetically favourable host-guest interactions between the polymer chains. The polymer blending was verified by the presence of a single glass transition temperature (T-g) and showed its homogeneous morphology by atomic force microscopy (AFM).
机译：在这项工作中，我们展示 - 在两种不同的设置中 - 四膦酸盐水氨酸/ N-甲基铵盐进行超分子聚合物化学制备的识别基序的潜力。在第一部分中，通过适当的设计，通过适当的相应单体进行新的pH敏感的超分子均聚物，并通过几种分析工具监测自组装过程，包括NMR光谱和光散射技术。这些测量提供了均聚物形成的证据及其pH响应性。在第二种研究中，分别在聚苯乙烯（PS-Host）和聚（甲基丙烯酸丁酯）（PBMA-SARC）中引入的两种识别基团 - 四膦酸盐水氨酸（宿主）和肌肉氨基）和肌肉氨酸盐酸盐（SARC）导致了两者的混合否则不混溶的聚合物，由于聚合物链之间的高力良好的宿主相互作用。通过单一玻璃化转变温度（T-G）存在聚合物混合，并通过原子力显微镜（AFM）显示其均匀形态。

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  • 来源
    《RSC Advances》 |2015年第15期|共9页
  • 作者

    Masseroni Daniele; Rampazzo Enrico; Rastrelli Federico; Orsi Davide; Ricci Lucia; Ruggeri Giacomo; Dalcanale Enrico;

  • 作者单位

    Univ Parma UdR Parma Dipartimento Chim I-43124 Parma Italy;

    Univ Bologna Dipartimento Chim G Ciamician UdR Bologna I-40126 Bologna Italy;

    Univ Padua Dipartimento Sci Chim I-35131 Padua Italy;

    Univ Parma Dipartimento Fis I-43124 Parma Italy;

    Univ Pisa UdR Pisa Dipartimento Chim &

    Chim Ind I-56124 Pisa Italy;

    Univ Pisa UdR Pisa Dipartimento Chim &

    Chim Ind I-56124 Pisa Italy;

    Univ Parma UdR Parma Dipartimento Chim I-43124 Parma Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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