The analysis on the mechanism of the energy transfer of couple structure of the core/shell quantum dots and biomolecule

Lin Xu; Jiahong Li; Canbang Zhang; Lingyun Zhou

doi:10.1117/12.918841

13 March 2012 The analysis on the mechanism of the energy transfer of couple structure of the core/shell quantum dots and biomolecule

Lin Xu, Jiahong Li, Canbang Zhang, Lingyun Zhou

Author Affiliations +

Proceedings Volume 8329, Tenth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2011); 83290F (2012) https://doi.org/10.1117/12.918841
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

It was found that core/shell quantum dots coupled with the structure of biological molecules, appear to accept the role of light to stimulate the part (donor),and then received no radiation in the form of energy to pass to the structure of some other molecules(acceptor), which appeared for the donor fluorescence quenching and the fluorescence activated receptor. It should be noted that in quantum dots coupled with molecular structure of biologcal energy transfer for its application in the biologcal sciences is very important. But its mechanism of energy transfer theory analysis is not enough. Now we generally agreed that quantum dots coupled with biologcal molecules in the structure of the transferring mechanism is the dipole-dipole interaction mechanism (Forster theory). However, Forster dipole-dipole interaction theory generally applies to weak coupling and incoherent system. As quantum dots coupled with the molecular structure of biologcal is complex, coupling between the system elements may be stronger coupled and has a coherence. Therefore, Forster dipole-dipole interaction theory does not apply. We believe that should be applied Redfield coherent exciton-dipole interactions or strong interactions between the exciton theory. If biomolecules coupled quantum dot structure with a high degree of coherence and the existence of anharmonic interactions, in this case perhaps the energy of this system will soliton transmission mechanism. This is only our speculation.

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Lin Xu, Jiahong Li, Canbang Zhang, and Lingyun Zhou "The analysis on the mechanism of the energy transfer of couple structure of the core/shell quantum dots and biomolecule", Proc. SPIE 8329, Tenth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2011), 83290F (13 March 2012); https://doi.org/10.1117/12.918841

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KEYWORDS

Quantum dots

Excitons

Energy transfer

Molecules

Molecular energy transfer

Luminescence

Molecular biology

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