通过反应性金属酞菁(Zn-TDTAPc)与N-异丙基丙烯酰胺/丙烯酸共聚物P(NIPAAm-co-AA)反应制备得到不同比例的温度/pH双敏感金属酞菁聚合物:Zn-TDTAPc—p(NIPAAm-co-AA)。通过紫外-可见光光谱、原子吸收光谱、傅立叶红外光谱、核磁共振等对其进行袁征,结果表明:Zn-TDTAPc已经成功键合到温度/pH双敏感聚合物上。这类聚合物的低临界溶解温度(LCST)可以通过改变共聚物中丙烯酸的含量来调节,随着丙烯酸含量的增加,该锌酞菁聚合物的LCST随pH值的增加而升高越明显。因此,可以通过改变温度/pH双敏感金属酞菁聚合物的相变温度来拓宽其应用范围。
A series of temperature and pH doubly responsive polymer catalysts (Zn-TDTAPc-p (NIPAAm-co-AA))are prepared by immobilizing reactive zinc tetra(2, 4-dichloro-1, 3, 5-triazine)aminophthalocyanine (Zn-TDTAPc) on the copolymers (p (NIPAAm-co-AA)) of N-isopropylacrylamide (NIPAAm) and acrylic acide (AA, different molar fraction). These catalysts are characterized by UV-vis spectroscopy, atomic absorption spectrometry, FT-IR, 1H NMR, etc. The results indicate that Zn-TD- TAPc is really immobilized on the doubly sensitive polymer. The result of the thermo behavior of these polymer catalysts show that the low critical solution temperature (LCST) in aqueous solution can be adjusted by changing the proportion of AA fraction in the Zn-TDTAPc-p(NIPAAm-co-AA). The higher AA fraction is, the more obviously the LCST improved. Therefore, these doubly sensitive polymer catalysts with different LCST can expand the applications of metallophthalocyanine.