Enhanced chemiluminescence CdSe quantum dots by histidine and tryptophan
| Autor: | Afsaneh Jarrahi, Farhang Mizani, Zahra Vaezi, Farnoush Faridbod, Mohammad Reza Ganjali, Morteza Hosseini |
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| Rok vydání: | 2014 |
| Předmět: |
Time Factors
Photochemistry Analytical Chemistry law.invention chemistry.chemical_compound law Quantum Dots Cadmium Compounds Imidazole Histidine Selenium Compounds Hydrogen peroxide Instrumentation Spectroscopy Chemiluminescence chemistry.chemical_classification Imidazoles Tryptophan technology industry and agriculture Hydrogen Peroxide equipment and supplies Atomic and Molecular Physics and Optics Amino acid Spectrometry Fluorescence chemistry Quantum dot Luminescent Measurements Light emission |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 132:629-633 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2014.04.187 |
| Popis: | The enhancing effect of histidine and tryptophan on chemiluminescence (CL) of CdSe quantum dots (QDs)–H2O2 system was studied. This reaction is based on the catalytic effect of amino acids, causing a significant increase in the light emission, as a result of the reaction of quantum dots (QDs) with hydrogen peroxide. In the optimum conditions, this method was satisfactorily described by linear calibration curve in the range of 0.66–35.5 μM and 0.83–35.1 μM for histidine and tryptophan, respectively. The effect of various parameters such as concentration of CdSe QDs, concentration of H2O2 and concentration of imidazole on the intensity of CL system were studied. The main experimental advantage of the proposed method is it’s selective to two amino acids compared with other amino acids. |
| Databáze: | OpenAIRE |
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