利用羧基修饰的CdSe量子点与氨基包覆的金纳米粒子之间的静电相互作用构建了金纳米粒子/CdSe量子点荧光共振能量转移(FRET)体系，研究了CdSe量子点与Au纳米粒子间距变化下该体系的荧光变化。结果表明，相互作用荧光强度和FRET效率均随间距的增大而减小，此变化规律与Frster能量共振转移理论给出的一致。

The fluorescence resonance energy transfer (FRET) system of gold nanoparticles and CdSe quantum dots is established via the electrostatic interaction between CdSe quantum dots modified with carboxyl and gold nanoparticles encapsulated with amino. The fluorescence variance in this system with the distance between CdSe quantum dot and gold nanoparticle is investigated. The results show that, the interaction fluorescence intensity and FRET efficiency both decrease with the increase of the distance, which is consistent with that predicted by the Frster resonance energy transfer theory.