Synthesis of fluorescent CdS quantum dots of tunable light emission with a new in situ produced capping agent / Yan-mei Mo in Industrial & engineering chemistry research, Vol. 51 N° 17 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5995–6000 Titre : Synthesis of fluorescent CdS quantum dots of tunable light emission with a new in situ produced capping agent Type de document : texte imprimé Auteurs : Yan-mei Mo, Auteur ; Yu Tang, Auteur ; Fei Gao, Auteur Année de publication : 2012 Article en page(s) : pp. 5995–6000 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Carboxylic acid Résumé : Herein, we report an ambient synthesis of CdS QDs with widely tunable particle size by sulfur source of H2S and a new capping agent R-2-thiotetrahydrothiazole-4-carboxylic acid in situ produced from the reaction of l-cysteine with carbon disulfide in water. XRD, FTIR, UV–vis, PL, and TEM measurements were used to characterize the synthesized CdS QDs. Small particle size in a range of 1–3 nm and five PL colors from dark, deep blue to yellow of CdS QDs were achieved by changing the molar ratio and pH value of preparation. These CdS colloid solutions exhibit high stability even under weak acidity conditions at pH 6.5. The CdS QDs display highest emission intensity at a concentration of 2 mM. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201826e [article] Synthesis of fluorescent CdS quantum dots of tunable light emission with a new in situ produced capping agent [texte imprimé] / Yan-mei Mo, Auteur ; Yu Tang, Auteur ; Fei Gao, Auteur . - 2012 . - pp. 5995–6000. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5995–6000 Mots-clés : Carboxylic acid Résumé : Herein, we report an ambient synthesis of CdS QDs with widely tunable particle size by sulfur source of H2S and a new capping agent R-2-thiotetrahydrothiazole-4-carboxylic acid in situ produced from the reaction of l-cysteine with carbon disulfide in water. XRD, FTIR, UV–vis, PL, and TEM measurements were used to characterize the synthesized CdS QDs. Small particle size in a range of 1–3 nm and five PL colors from dark, deep blue to yellow of CdS QDs were achieved by changing the molar ratio and pH value of preparation. These CdS colloid solutions exhibit high stability even under weak acidity conditions at pH 6.5. The CdS QDs display highest emission intensity at a concentration of 2 mM. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201826e

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