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Living Cell CdSe(ZnS) quantum dots conjugated to the electron donor dopamine show enhancement of photoluminescence over a time course of seconds to minutes when exposed to ultraviolet or blue irradiation. This phenomenon is observed when the dots are in aqueous solution as well as after endocytosis by living cells. The rate of enhancement is directly related to the number of dopamine conjugates per quantum dot, and can be semi-quantitatively adjusted over a wide range. Uptake of the particlesdoi:10.1524/zpch.2008.6012 fatcat:gynbcqtzkncvpefa5xtf54ks4q