Thioglycerol-functionalized CdSe quantum dots detecting cadmium ions
نویسندگان
چکیده
منابع مشابه
Pseudopotential calculations of nanoscale CdSe quantum dots.
A plane-wave semiempirical pseudopotential method with nonlocal potentials and spin-orbit coupling is used to calculate the electronic structure of surface-passivated wurtzite CdSe quantum dots with up to 1000 atoms. The calculated optical absorption spectrum reproduces the features of the experimental results and the exciton energies agree to within ;0.1 eV over a range of dot sizes. The corre...
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Spectral diffusion of the emission line of single colloidal nanocrystals is generally regarded as a random process. Here, we show that each new spectral position has a finite memory of previous spectral positions, as evidenced by persistent anticorrelations in time series of spectral jumps. The anticorrelation indicates that there is an enhanced probability of the charge distribution around the...
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Based on 15-crown-5 functionalized CdSe/ZnS quantum dots (QDs), we report a novel fluorogenic sensor to probe K+ ions in H2O; recognition of K+ can be achieved via the Förster type of energy transfer between two different color QDs, so that [K+] of the order of 10(-6) M can be promptly detected.
متن کاملCharacteristics and Properties of Cdse Quantum Dots
The CdSe nanocrystals (NCs) have been synthesized by hot-injection method to improve the crystallinity of synthesized nanoparticles and reconstruct the surface of nanoparticles. The crystalline structure and optical properties of these NCs are characterized by X-ray powder diffraction (XRD), ultravioletvisible light absorption and photoluminescence (PL) spectroscopy. The CdSe NC grains are rou...
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Ruscogenin (RUS) is a steroidal sapogenin found in Ruscus aculeatus and Ophiopogon japonicus with several pharmacological activities. In the work reported herein, a novel method termed competitive fluorescence-linked immunosorbent assay (cFLISA) based on monoclonal antibodies (mAbs) coupled with quantum dots (QDs) was developed for the quick and sensitive determination of RUS in biological samp...
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ژورنال
عنوان ژورنال: Sensors and Actuators B: Chemical
سال: 2015
ISSN: 0925-4005
DOI: 10.1016/j.snb.2015.07.049