1. Single-molecule photophysical properties of various directly linked porphyrin arrays / Dongho Kim and Atsuhiro Osuka -- 2. Electron transfer through butadiyne-linked porphyrin-based molecular wires / Bo Albinsson and Harry L. Anderson -- 3. Recent applications of MCD spectroscopy to porphyrinoids / John Mack and Nagao Kobayashi -- 4. Phthalocyanine-porphyrin heteroarrays : a perfect marriage between two unique macrocycles / Giovanni Bottari. [et al.] -- 5. Primary photoevents in self-assembled complexes : multiporphyrin arrays and 'semiconductor CdSe/ZnS nanocrystal-porphyrin' composites / Eduard Zenkevich and Christian von Borczyskowski -- 6. Structural and functional mimics of light-harvesting systems in bacterial photosynthesis / Yoshiaki Kobuke -- 7. Light harvesting, excitation energy/electron transfer, and photoregulation in artificial photosynthetic systems / Yuichi Terazono. [et al.] -- 8. Multiporphyrins-fullerenes and multiporphyrins-SWCNTs mimicking photosynthetic antenna-reaction center / Francis D'Souza and Osamu Ito -- 9. Application of multiporphyrin arrays to solar energy conversion / Simon Mathew and Hiroshi Imahori -- 10. Self-assembled composite materials of porphyrins for optoelectronics / Taku Hasobe -- 11. Vectorial photoinduced charge transfer in Langmuir-Blodgett films of porphyrin-based donor-acceptor systems / Nikolai V. Tkachenko and Helge Lemmetyinen -- 12. Supramolecular energy and electron-transfer processes and their switching / Joe Otsuki -- 13. Porphyrin nanoclusters for sensoring chemical and physical stimuli / Akihiko Tsuda -- 14. Energy- and electron-transfer processes in porphyrin dendrimers / Myung-Seok Choi and Woo-Dong Jang -- 15. Push-pull porphyrins for efficient dye-sensitized solar cells / Chen-Yu Yeh, Ching-Yao Lin, and Eric Wei-Guang Diau.