Diarylbibenzofuranone-Based Dynamic Covalent Polymer Gels Prepared via Radical Polymerization and Subsequent Polymer Reaction
Diarylbibenzofuranone-Based Dynamic Covalent Polymer Gels Prepared via Radical Polymerization and Subsequent Polymer Reaction
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DOI：
10.3390/gels1010058
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发表时间：
2015-07
期刊：
影响因子：
4.6
通讯作者：
K. Imato;Masamichi Nishihara;A. Irie;A. Takahara;H. Otsuka
中科院分区：
文献类型：
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作者：
K. Imato;Masamichi Nishihara;A. Irie;A. Takahara;H. Otsuka
二芳基二苯并呋喃酮（DABBF）是一种动态共价键合单元，在室温下与相应的自由基处于平衡状态，含DABBF键的聚合物具有自修复等显著性质。然而，由于DABBF具有很强的抗氧化活性，其制备路线受到严格限制，并且没有通过自由基聚合合成具有连接基的聚合物。在这里，我们提出了一种新的方法来制备含DABBF的聚合物通过自由基聚合的前体，芳基苯并呋喃酮（ABF），和随后的聚合物反应，在线性聚合物中的ABF单元的二聚。由DABBF键交联的聚合物凝胶对ABF的相对较强的抗氧化活性，并在室温下显示动态网络重组。
Diarylbibenzofuranone (DABBF) is a dynamic covalent bonding unit, which is in equilibrium with the corresponding radicals at room temperature, and polymers with DABBF linkages show notable properties such as self-healing. The preparation routes have been strictly limited, however, and no polymer with the linkages has been synthesized via radical polymerization because of the strong antioxidant activity of DABBF. Here we present a new method to prepare DABBF-containing polymers via radical polymerization of the precursor, arylbenzofuranone (ABF), and subsequent polymer reaction, dimerization of ABF units in the linear polymers. Polymer gels cross-linked by DABBF linkages were obtained against the relatively strong antioxidant activity of ABF and showed dynamic network reorganization at room temperature.