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以含氟的二胺5,5’-(六氟异丙基)-二-(2-氨基苯酚)及二酐3,3’,4,4’-苯四甲酸二酐(BPDA)为单体。首先合成了经酰胺化的主链上带有活性羟基的含氟聚酰亚胺,再通过 Mitsunobu 反应将活性生色分子共价链接到聚酰亚胺的侧链骨架上,合成了二阶非线性光学(NLO)含氟聚酰亚胺,采用溶胶-凝胶(sol-gel)技术,并利用偶联剂 APTES 制备带有发色团的及含有硅氧烷端分子的聚酰胺酸,其中的 Si(OR)_3基经水解、缩合后,与 TEOS 在催化剂作用下反应,经杂化、凝胶后,得到光学透明的具有非线性光学的、热稳定性高的杂化材料。将制得的 NLO 含氟聚酰亚胺/SiO_2杂化材料,采用红外光谱(FT-IR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X 射线衍射(XRD)、示差扫描量热法(DSC)和热重分析(TGA)性能测试装置对材料的结构、表面形貌、热性能进行了表征。
Using fluorine-containing diamine 5,5 ’- (hexafluoroisopropyl) -bis- (2-aminophenol) and dianhydride 3,3’, 4,4’-benzenetetracarboxylic dianhydride (BPDA) body. Firstly, the fluorinated polyimide with active hydroxyl groups on the amidated main chain was synthesized, and then the active chromophore molecules were covalently linked to the side chain of polyimide through Mitsunobu reaction to synthesize the second order Linear Optic (NLO) Fluorine-Containing Polyimide, a chromophore-containing and siloxane-terminated polyamic acid was prepared using a sol-gel technique and coupling agent APTES, wherein Si (OR) _3 is hydrolyzed, condensed and reacted with TEOS under the action of a catalyst. After hybridization and gelation, an optically transparent and non-linear optical and thermally stable hybrid material is obtained. The obtained NLO fluorine-containing polyimide / SiO_2 hybrid materials were characterized by FT-IR, SEM, TEM, XRD, The structure, surface morphology and thermal properties of the materials were characterized by DSC and TGA.