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PHOTOCHEMICALLY INDUCED LUMINESCENCE POLARIZATION OF CdSe/ZnS QUANTUM RODS IN POROUS MATRIX

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Selective photochemical reaction in initially disordered ensemble of quantum rods, embedded in porous matrix, under continuous irradiation with polarized light is carried out. Photochemical reaction resulted in an appearance of photoinduced anisotropy of the nanocrystals luminescence. A specific dark process of anisotropy relaxation lasting around 10 minutes is observed. This process is presumably induced by rotational diffusion of nanocrystals in pores of the matrix. A bi-exponential time dependence of quantum rod luminescence intensity in photochemical reaction is attributed to the development of two photoinduced processes: photoinduced luminescence enhancement and photooxidation.

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