Details

Autor(en) / Beteiligte

• Jang, Joon Hee
• Jeon, Ki-Seok
• Oh, Seungdo
• Kim, Hee-Joon
• Asahi, Tsuyoshi
• Masuhara, Hiroshi
• Yoon, Minjoong

Titel

Synthesis of Sn-Porphyrin-Intercalated Trititanate Nanofibers:  Optoelectronic Properties and Photocatalytic Activities

Ist Teil von

• Chemistry of materials, 2007-04, Vol.19 (8), p.1984-1991

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2007

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A new class of nanostructures were fabricated by one-step hydrothermal reaction of a mixture solution of TiO2 anatase powder and a Sn-porphyrin, trans-dihydroxo[5,10,15,20-tetrakis(p-tolyl)porphyrinato]tin(IV) [SnTTP], and they were found to be well-crystalline trititanate (H2Ti3O7)-type multilayered nanofibers (TiNFs) intercalated by SnTTP which have lengths in the range of 0.5−1 μm with an average diameter of approximately 50 nm. Based on the femtosecond-diffuse reflectance transient absorption and photoluminescence spectroscopic measurements, the SnTTP-intercalated TiNFs were observed to exhibit efficient optoelectronic properties such as photoinduced electron transfer from deep surface states of trititanate layer to SnTTP, forming an anion radical SnTTP.•- rapidly in a few picoseconds. These results infer that electrons and holes are effectively separated in the SnTTP−TiNFs upon illumination, and consequently remarkable UV−visible light-sensitive photocatalytic activities as compared to those of free TiNFs and SnTTP, suggesting that the SnTTP-intercalated TiNFs have potential application in development of efficient artificial photosynthetic systems and photoelectronic materials.