Two-photon-induced Förster Resonance Energy Transfer in a Quantum dot-bacteriorhodopsin Hybrid Material

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• 作者：Victor Krivenkov^a ; ^{vkrivenkov@list.ru" class="auth_mail" title="E-mail the corresponding author} ; Pavel Linkov^a ; Daria Solovyeva^a ; Regina Bilan^a ; Alexander Chistyakov^a ; ^b ; Igor Nabiev^a ; ^c
• 关键词：Quantum dots ; bacteriorhodopsin ; energy transfer ; two-photon absorption ; nanomaterial
• 刊名：Materials Today: Proceedings
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：3
• 期：2
• 页码：A1-A5
• 全文大小：224 K

文摘

Two-photon-induced Förster resonance energy transfer from water-solubilized CdSe/ZnS quantum dots (QDs) to the photosensitive protein bacteriorhodopsin (bR) is described. The two-photon absorption cross section (TPACS) of QDs at an excitation wavelength of 790 nm has been found to be about 20000 GM, which is two orders of magnitude larger than the maximal TPACS of bR. Therefore, the two-photon excitation of QDs in QD-bR systems is highly selective. The data obtained demonstrate the possibility to extend the effective spectral range of excitation of bR to the infrared region. This result paves a way to new applications of bR–QD hybrid materials in photovoltaics, biosensing, and optoelectronics.