Abstract
AbstractWe prepared water‐soluble CdS nanocrystals (NCs) capped by the poly (ethylene glycol)‐b‐poly (2‐(N,N ‐dimethylamino)ethyl methacrylate) chain. The photoluminescence (PL) properties of CdS NCs are investigated by time‐resolved and temperature‐dependent PL spectra. It is found that the PL band of CdS NCs is dominated by two trap state emissions, respectively. Due to the trap state emissions, fluorescent resonance energy transfer from CdS NCs to organic dyes (Texasred) can be observed, which suggests the potential application of trap states of CdS NCs for fabrication of biosensors. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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