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Photoisomerization of Cellulose Derivatives Obtained from Homogeneous System

균질계에서 얻은 셀룰로오스 유도체의 광이성질화 현상 연구

  • No, Young-Ran (Dept. of Chemical Technology, Changwon National University) ;
  • Park, Keun-Ho (Dept. of Chemical Technology, Changwon National University) ;
  • Lee, Soo (Dept. of Chemical Technology, Changwon National University)
  • 노영란 (창원대학교 공업화학과) ;
  • 박근호 (창원대학교 공업화학과) ;
  • 이수 (창원대학교 공업화학과)
  • Published : 2000.12.31

Abstract

Cellulose tosylate(CT) was prepared by reaction of cellulose with p- toluenesulfonylchloride in DMAc/LiCl homogeneous system. In order to study a reversible photoisomerization of disperse red 1(DR-1) attached on natural polymer, cellulose tosylate containing DR-1(DR-1/CT adduct) was prepared at $110^{\circ}C$ in DMAc, and the changes of UV/Vis spectra of its solutions and thick film were investigated by alternate irradiation technique. Form the UV/Vis spectra of DR-1/CT adduct dissolved in cosolvents, such as DMAc, DMAc/THF, DMAc/benzene, and DMAc/chloroform and irradiated with 360 nm and 450 nm ligths, we found out changes of UV/Vis spectra were reversible in all solvents systems and we found out changes of UV/Vis spectra were reversible at thick film, also.