Anisotropic photochemical energy transfer in clay/porphyrin system prepared by size-matching effect and Langmuir–Blodgett technique

• Porphyrin-clay three-dimensional system was prepared by size-matching effect and Langmuir–Blodgett technique.
• High density without unfavorable aggregation assembly structure of porphyrin was constructed.
• Anisotropic energy transfer between porphyrin molecules at different layer took place.
• Obtained porphyrin-clay three-dimensional system could be a promising candidate for artificial light harvesting system.

Anisotropic energy transfer system was successfully prepared by a combination of Langmuir-Blodgett (LB) technique and Size-matching effect. Tetrakis(1-methylpyridinium-3-yl) porphyrin (m-TMPyP) and tetrakis(1-methylpyridinium-4-yl) porphyrin (p-TMPyP) were used as energy donor and acceptor, respectively. High density assembly structure without unfavorable aggregation of them was constructed. In the LB membrane system, efficient anisotropic energy transfer between p-TMPyP and m-TMPyP at different layer proceeded. The maximum energy transfer efficiency was 85%.

“Anisotropic energy transfer in clay-porphyrin Langmuir–Blodgett system.”Figure optionsDownload as PowerPoint slide