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Title: Enhanced two-photon singlet oxygen generation by photosensitizer-doped conjugated polymer nanoparticles
Authors: Shen, X.
He, F. 
Wu, J. 
Xu, G.Q. 
Yao, S.Q. 
Xu, Q.-H. 
Issue Date: 1-Mar-2011
Citation: Shen, X., He, F., Wu, J., Xu, G.Q., Yao, S.Q., Xu, Q.-H. (2011-03-01). Enhanced two-photon singlet oxygen generation by photosensitizer-doped conjugated polymer nanoparticles. Langmuir 27 (5) : 1739-1744. ScholarBank@NUS Repository.
Abstract: We have prepared photosensitizer-doped conjugated polymer nanoparticles by using a reprecipitation method. The conjugated polymer, poly[9,9- dibromohexylfluorene-2,7-ylenethylene-alt-1,4-(2,5-dimethoxy)phenylene] (PFEMO), was used as the host matrix to disperse tetraphenylporphyrin (TPP). These TPP-doped PFEMO nanoparticles are stable and have a uniform size of ∼50 nm. Efficient intraparticle energy transfer from PFEMO to TPP has been observed. The TPP emission of the nanoparticles was found to be enhanced by 21-fold by PFEMO under two-photon excitation. Enhanced two-photon excitation singlet oxygen generation efficiency in the TPP-doped PFEMO nanoparticles has been demonstrated. Our results suggest that these photosensitizer-doped conjugated polymer nanoparticles can act as novel photosensitizing agents for two-photon photodynamic therapy and related applications. © 2011 American Chemical Society.
Source Title: Langmuir
ISSN: 07437463
DOI: 10.1021/la104722q
Appears in Collections:Staff Publications

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