Chemical Sensitivity of Luminescent Epitaxial Surface InP Quantum Dots
نویسندگان
چکیده
منابع مشابه
Synthesis and Cytotoxicity of Luminescent InP Quantum Dots
As a potential biological imaging probe with a long-wavelength of emission, InP quantum dots were prepared via a high-temperature organic solution approach, and successfully transferred into an aqueous system through a ligand-exchange process using various functional surfactants. Photoluminescence and X-ray characterizations confirmed the desired properties of the InP quantum dots. The cytotoxi...
متن کاملSurface processes during purification of InP quantum dots
Recently, a new simple and fast method for the synthesis of InP quantum dots by using phosphine as phosphorous precursor and myristic acid as surface stabilizer was reported. Purification after synthesis is necessary to obtain samples with good optical properties. Two methods of purification were compared and the surface processes which occur during purification were studied. Traditional precip...
متن کاملSize-Dependent Spectroscopy of InP Quantum Dots
The spectroscopic behavior of colloidal InP quantum dots (QDs) has been investigated as a function of the mean QD diameter (which ranged from 26 to 60 Å). Absorption spectra show up to three peaks or shoulders which reflect excited state transitions in the QDs. Global photoluminescence (PL) spectra (excitation well to the blue of the absorption onset and which consequently excites most of the Q...
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We report the design and synthesis of a tetraethylene glycol- (TEG-) based bidentate ligand functionalized with dihydrolipoic acid (DHLA) and biotin (DHLA-TEG-biotin) to promote biocompatibility of luminescent quantum dots (QD's). This new ligand readily binds to CdSe-ZnS core-shell QDs via surface ligand exchange. QDs capped with a mixture of DHLA and DHLA-TEG-biotin or polyethylene glycol- (P...
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Size-controlled synthesis of luminescent quantum dots of MoS2 (≤2 layers) with narrow size distribution, ranging from 2.5 to 6 nm, from their bulk material using a unique electrochemical etching of bulk MoS2 is demonstrated. Excitation-dependent photoluminescence emission is observed in the MoS2 QDs. "As-synthesized" MoS2 QDs also exhibit excellent electrocatalytic activity towards hydrogen evo...
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ژورنال
عنوان ژورنال: Journal of Sensor Technology
سال: 2013
ISSN: 2161-122X,2161-1238
DOI: 10.4236/jst.2013.31001