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- W3048453402 abstract "Histidine protected luminescent gold nanoclusters ([email protected] NCs) were synthesized that interact with non-luminescent silver nanoparticles (Ag NPs) through a resonance energy transfer (RET) process where the latter acts as dark quencher. The interaction is collisional in nature as deduced by applying the Stern-Volmer equation. On external addition of a model transport protein (human serum albumin, HSA), the surface of the [email protected] NCs accepts the proteins through physisorption that results into considerable enhancement of the luminescence of the [email protected] NCs. The protein adsorbed [email protected] NCs, on the other hand, possibly cling to the surface of the larger Ag NPs. This is confirmed from the quenching pattern of the emission from the [email protected] NCs and time-resolved spectroscopy. The process contravenes the efficiency of RET and reduces the transfer of energy from the more luminescent [email protected] NCs to the non-luminescent Ag NPs. On interaction with Ag NPs, the emission maximum shifts considerably to higher wavelength suggesting stabilization (due to restricted translational and rotational motions) of the [email protected] NCs. The results are intriguing since the protein-aided adsorption of the luminescent [email protected] NCs could restrict the energy transfer to the adsorbent (Ag NPs) in a quantitative way." @default.
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- W3048453402 date "2020-11-01" @default.
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- W3048453402 title "Energy transfer from luminescent gold nanoclusters to non-luminescent silver nanoparticles from a new perspective" @default.
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- W3048453402 doi "https://doi.org/10.1016/j.molliq.2020.114048" @default.
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