It is found that 5,10,15,20-tetrakis(4-sulfonatophenyl) porphyrin(TPPS),which is known to form J aggregates in water under low pH value,acts as a template for the hydrolyzing of organosilane.The nanotube structures of...It is found that 5,10,15,20-tetrakis(4-sulfonatophenyl) porphyrin(TPPS),which is known to form J aggregates in water under low pH value,acts as a template for the hydrolyzing of organosilane.The nanotube structures of silica with 4 8 nm inner diameters are obtained,which is consistent with the height of TPPS J aggregates,indicating that TPPS J aggregates are indeed acting as the template for the sol-gel transcription.The TPPS J aggregation disappear when the medium pH value is shifted from acidic to basic,consequently formed silica nanostructures are amorphous nanosphere rather than nanofiber structures.In contrast,the copper phthalocyanine(TSCuPc),which does not exist as linear J aggregates,cannot induce the silica to form one dimensional nanofiber structures,implying that the templating effect of TPPS J aggregates for inorganic nanostructures.展开更多
基金Project(U1704145)supported by the National Natural Science Foundation of ChinaProject(522MS062)supported by the Hainan Provincial Natural Science Foundation,ChinaProjects(Hnjg2022-55,Hnjg2020ZD-17)supported by the Hainan Provincial Higher Education Institutions Research Project on Education and Teaching Reform,China。
基金supported by the National Basic Research Program of China (2009CB930802)the National Natural Science Foundation of China(91027042,21021003)the Fund of the Chinese Academy of Sciences
文摘It is found that 5,10,15,20-tetrakis(4-sulfonatophenyl) porphyrin(TPPS),which is known to form J aggregates in water under low pH value,acts as a template for the hydrolyzing of organosilane.The nanotube structures of silica with 4 8 nm inner diameters are obtained,which is consistent with the height of TPPS J aggregates,indicating that TPPS J aggregates are indeed acting as the template for the sol-gel transcription.The TPPS J aggregation disappear when the medium pH value is shifted from acidic to basic,consequently formed silica nanostructures are amorphous nanosphere rather than nanofiber structures.In contrast,the copper phthalocyanine(TSCuPc),which does not exist as linear J aggregates,cannot induce the silica to form one dimensional nanofiber structures,implying that the templating effect of TPPS J aggregates for inorganic nanostructures.
