Poly(oxyethylene)-Substituted Copper and Lutetium Phthalocyanines
摘要:
A new family of nonionic water-soluble lutetium bisphthalocyanines and a copper monophthalocyanine have been synthesized and characterized. Optical absorption determinations demonstrate aggregation processes in water. Optical microscopy, differential scanning calorimetry (DSC), and X-ray diffraction measurements have also been performed on the materials. The substituted copper complex yields a hexagonal columnar Liquid crystal above 62 degrees C; this mesophase can incorporate up to 16% (w/w) of triethylene glycol without significant disturbance of the structure, One of the substituted lutetium bisphthalocyanines affords a tetragonal columnar mesophase; the other bisphthalocyanine derivatives show only highly ordered crystalline like phases. Conductivity measurements have been carried out on thin films of the previous derivatives to determine the relative electronic and ionic conduction contributions.
A double branched photosensitive prodrug: synthesis and characterization of light triggered drug release
作者:Wei Liu、Li Liang、Pik Kwan Lo、Xiao Jun Gou、Xiao Hua Sun
DOI:10.1016/j.tetlet.2016.01.064
日期:2016.2
A novel oNB based, double branched photosensitive prodrug 1, and a biphenyl counterpart 2 were designed and synthesized. Their photo-triggered drug release properties were studied by HPLC and UV–vis spectra. The isobestic points in UV–vis spectra of prodrug 1 indicated that homogeneous photolysis reaction happened upon xenon-based light irradiation. HPLC analysis confirmed that (antitumor) chlorambucil