Quantum dot fluorescence as a function of alkyl chain length in aqueous environments |
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Authors: | Blum Amy Szuchmacher Moore Martin H Ratna Banahalli R |
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Affiliation: | Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, D.C. 20375, USA. amyblum@cbmse.nrl.navy.mil |
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Abstract: | In this work, we examine the dependence of the fluorescence quantum yield of water-soluble CdSe/ZnS quantum dots on the local environment. The hydrophobicity of the local environment was modified by using different alkyl chain lengths in a set of oligo-ethylene glycols. Our results show that the quantum yield of CdSe/ZnS quantum dots is highest for the longest alkyl chain length, suggesting that a more hydrophobic environment is beneficial for generating bright, water-soluble quantum dots. |
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