Efficient photosensitization of terbium ions enabled by hydrolysis of siloxy groups in ligands with specific side-chains.

Abstract

We have demonstrated the first observable case of efficient energy transfer from poly-ligands to terbium ions through cross-linked siloxane in solution. The intensification of green luminescence was easily perceived by the naked eye under UV-254 nm illumination, where even the terbium dopants reached 0.1 μM. Moreover, the nano-scale fibrous structure (diameter 100-200 nm) aggregated to a micro-meter size round plate (diameter 1.1 μm). In addition, compound 1 equipped with three long tetradecyl chains in gels gained more of an advantage over the doubly tetradecylated compounds 2 and 3 in terms of energy migration to terbium ions due to side chain effects.

• Authors: QianMing Wang, Keishiro Ogawa, Yan Li, Hitoshi Tamiaki
• Journal: Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology (Photochem Photobiol Sci) Vol. 10 Issue 1 Pg. 60-5 (Jan 2011) ISSN: 1474-9092 [Electronic] England
• PMID: 20978660 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Ions
• Ligands
• Photosensitizing Agents
• Siloxanes
• Solutions
• Terbium

Topics

• Energy Transfer
• Hydrolysis
• Ions (chemistry)
• Ligands
• Luminescence
• Magnetic Resonance Spectroscopy
• Microscopy, Atomic Force
• Photosensitizing Agents (chemistry)
• Siloxanes (chemistry)
• Solutions (chemistry)
• Terbium (chemistry)