Enhanced One- and Two-Photon Excitation Emission of a Porphyrin Photosensitizes by FRET from a Conjugated Polyelectrolyte

被引：31

作者：

Wu, Chuanliu ^{[1
]}

Xu, Qing-Hua ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2009年 / 30卷 / 07期

关键词：

conjugated polymers; energy transfer; fluorescence; self-assembly; two-photon excitation; SINGLET OXYGEN GENERATION; SEMICONDUCTOR QUANTUM DOTS; RESONANCE ENERGY-TRANSFER; PHOTODYNAMIC THERAPY; POLYMERS; WATER; NANOPARTICLES; CYTOTOXICITY; FLUORESCENCE; ABSORPTION;

D O I：

10.1002/marc.200800655

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Porphyrin-based systems are widely used as photosensitizers for photodynamic therapy, photocatalysis, and drug release. Strategies to enhance one- or two-photon excitation emission of porphyrin sensitizers have been of great interest and significance. Here we report an electrostatic assembly, which comprises a cationic conjugated polyelectrolyte, PFP, and a negatively charged hematoporphyrin (HP). An enhancement of over 9-fold in the HP emission intensity for one-photon excitation Forster resonance energy transfer (FRET), and an enhancement factor of 30-fold for two-photon excitation FRET were obtained. This electrostatic assembly can be easily modified in the future to construct DNA- or protein-programmed enhancement of porphyrin emission, which will be of great interest in porphyrin-based applications.

引用

页码：504 / 508

页数：5

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