Light Harvesting and Energy Transfer in Multiporphyrin-Modified CdSe Nanoparticles (pages 254–261)
Soonchul Kang, Masakazu Yasuda, Hiroshi Miyasaka, Hironobu Hayashi, Mitsuo Kawasaki, Tomokazu Umeyama, Yoshihiro Matano, Kaname Yoshida, Seiji Isoda and Hiroshi Imahori
Article first published online: 19 FEB 2008 | DOI: 10.1002/cssc.200700138
Array of sunshine: CdSe nanoparticles modified with multiple porphyrin units have been developed as light-harvesting molecules. The CdSe nanoparticle absorbs UV/Vis light and transfers the energy efficiently to the porphyrin moieties. Importantly, the porphyrin excited singlet state is not quenched by the CdSe core, in sharp contrast to the rapid quenching observed for the same porphyrin unit by the metal surface in porphyrin-modified metal nanoparticles.