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A Visible-Light-Harvesting Assembly with a Sulfocalixarene Linker between Dyes and a Pt-TiO2 Photocatalyst


  • This study was supported by Priority Assistance for the Formation of Worldwide Renowned Centers of Research, the Global COE Program (Project: Center of Excellence for Advanced Structural and Functional Materials Design) and a Grant-in-Aid for Scientific Research (KAKENHI, No. 24760640) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) (Japan).


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Successful anchoring of cationic dye molecules (thiazole orange, TO) on Pt-TiO2 for a visible-light-harvesting assembly was achieved by surface modification of Pt-TiO2 with 4-sulfocalix[4]arene as a linker, leading to formation of surface complexes (see picture). This heterogeneous system can act as an efficient photocatalyst for production of hydrogen in the presence of a sacrificial reagent (TEOA=triethanolamine).