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在CuI催化作用下,实现了含膦酰杂菲侧基的4-炔基苯甲酸酯(MAT4)与聚叠氮缩水甘油醚(GAP)的点击接枝反应,得到新型接枝聚合物G-M4,并由红外谱图确定了等摩尔反应.由于分子内含膦酰杂菲基团侧基之间较强的π-π和极性共同相互作用以及聚醚主链的柔顺性,使G-M4分子链内侧基之间相对空间位置比较固定,分子链构型规整,使分子链之间的排列趋于规整,分子的内旋转受到限制,进而降低了热运动所引起的能量损失,导致聚合物的荧光强度明显增加,呈现具有聚集诱导发光增强特性.同时由于G-M4分子链之间采取J-聚集,使分子链之间趋于规整聚集,部分分子链之间形成超分子结构,当沉淀剂正己烷含量超过70%时,在荧光光谱长波区域出现归属于超分子结构的发射峰,并随正己烷含量增加,该荧光强度增强.
Under CuI catalysis, the grafting reaction of 4-alkynyl benzoate (MAT4) with poly (azide) glycidyl ether (GAP) -M4, and the equimolar reaction was confirmed by infrared spectroscopy.Because of the strong π-π and polar interaction between the side groups of phosphonated phenanthroline group and the flexibility of polyether main chain, G-M4 molecular chain inside the relative position between the relatively fixed position, the molecular chain structure regular, the arrangement of the molecular chains tend to be regular, the inner rotation of the molecule is limited, thereby reducing the energy loss caused by thermal motion, Resulting in a significant increase in the fluorescence intensity of the polymer, showing the aggregation-induced luminescence enhancement.At the same time, due to the J-aggregation between the G-M4 molecular chains, the molecular chains tend to converge regularly, and some molecular chains form supramolecular structures When the content of n-hexane in the precipitant exceeds 70%, the emission peaks belonging to the supramolecular structure appear in the long wavelength region of the fluorescence spectrum, and the fluorescence intensity increases with the increase of the n-hexane content.