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ExtendedQ-band fluorescence lifetime of Tetraphenyl porphyrins adsorbed on silver nanoparticles

Yang Zhen-Ling Liu Yu-Qiang Yang Yan-Qiang

ExtendedQ-band fluorescence lifetime of Tetraphenyl porphyrins adsorbed on silver nanoparticles

Yang Zhen-Ling, Liu Yu-Qiang, Yang Yan-Qiang
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  • PDF Downloads:  584
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Publishing process
  • Received Date:  25 April 2011
  • Accepted Date:  27 May 2011
  • Published Online:  15 March 2012

ExtendedQ-band fluorescence lifetime of Tetraphenyl porphyrins adsorbed on silver nanoparticles

  • 1. Center for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 20973050), Defense Industrial Technology Development Program of China (Grant No.B1520110002), The Pre-Research foundation of CPLA General Armament Department (Grant No. 9104C6709101106), and the Science and Technology Foundation of State Key Laboratory of Shock Wave and Detonation Physics (Grant No. 2011-2).

Abstract: The change ofQ-band fluorescence lifetime of tetraphenyl porphyrins(TPP) adsorbed on the surface of silver nanoparticles is reported. The lifetime was extended when the surface plasmon resonant peak of silver nanoparticles was adjusted to resonant with theQ- absorption band. Silver nanoparticles bring large surface plasmon resonant enhancement effect to the surface light field, and the excited TPP molecules have higher polarity. The enhanced light field will stabilize the TPP molecules of high polarity, which causes the extendedQ-band fluorescence lifetime. It has an important significance in photodynamic therapy using porphyrins as photosensitizer.

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