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Large enhancement of nonlinear optical response in a hybrid nanobiomaterial consisting of bacteriorhodopsin and cadmium telluride quantum dots

AuthorsRakovich, Aliaksandra; Nabiev, Igor; Sukhanova, Alyona; Lesnyak, Vladimir; Gaponik, Nikolai; Rakovich, Yury P. ; Donegan, John F.
KeywordsHybrid material
White membranes
D96N mutant
Quantum dot
Nonlinear refractive index
Nonlinear optical properties
Purple membranes
Issue Date2013
PublisherAmerican Chemical Society
CitationACS Nano 7(3): 2154-2160 (2013)
AbstractWe report wavelength-dependent enormous enhancement of the nonlinear refractive index of wild-type bacteriorhodopsin in the presence of semiconductor quantum dots. The effect is strongest in the region just below the absorption edge of both constituents of this hybrid material and in samples that show strong Förster resonance energy transfer. We show that enhancements of up to 4000% can be achieved by controlled engineering of the hybrid structure involving variations of the molar ratio of the constituents. This new hybrid material with exceptional nonlinear properties will have numerous photonic and optoelectronic applications employing its photochromic, energy transfer, and conversion properties. © 2013 American Chemical Society.
Identifiersdoi: 10.1021/nn3049939
issn: 1936-0851
e-issn: 1936-086X
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