N-丙烯酰-2-氯吩噻嗪、N-丙烯酰-2-乙酰基吩噻嗪单体和聚合物的合成以及荧光行为的研究

SYNTHESES AND FLUORESCENCE BEHAVIOURS OF ACRYLIC MONOMERS HAVING PHENOTHIAZINE MOIETIES AND THEIR POLYMERS

含芳杂环的丙烯酰类功能性单体及其聚合物的合成一直吸引人们的兴趣,原因之一是由于这类单体可用一般的自由基引发剂引发聚合,这类聚合物所表现出的光化学、电化学性质甚被瞩目。

Two N-acrylic monomers having phenothiazine moieties , N-acrylyl-2-chlorophe-nothiazine ( I ) , N-acrylyl-2-acetylphenothiazine ( I ) were synthesized and their polymers were obtained by free radical polymerization . The fluorescence study showed that at the same molar concentration of the chromophores, the fluorescence intensities of the polymers were much stronger than that of the monomers. This would be explained by what we called "Structural Self-quenching Effect. " The Stern-Volmer constants of the polymers quenched by several electron defecient vinyl monomers were obtained. The results indicated that their quenching efficiencies were relevant to the degree of the electron deficiency of the double bond.