title: Enhanced chemiluminescence CdSe quantum dots by histidine and tryptophan.
abstract: 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.
authors.affiliation: Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran. Electronic address: smhosseini@khayam.ut.ac.ir.
authors.forename: Morteza
authors.initials: M
authors.lastname: Hosseini
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Ganjali
authors.affiliation: Department of Chemistry, Payame Noor University, Tehran, Iran.
authors.forename: Afsaneh
authors.initials: A
authors.lastname: Jarrahi
authors.affiliation: Dipartimento di Scienze e Tecnologie Chimiche, Universita' di Roma Tor Vergata, 00133 Rome, Italy.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Vaezi
authors.affiliation: Department of Chemistry, Payame Noor University, Tehran, Iran.
authors.forename: Farhang
authors.initials: F
authors.lastname: Mizani
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
authors.forename: Farnoush
authors.initials: F
authors.lastname: Faridbod
mesh_terms: D019187:Cadmium Compounds; D006639:Histidine / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry; D008163:Luminescent Measurements / Q000379:methods*; D045663:Quantum Dots / Q000737:chemistry*; D018036:Selenium Compounds; D013050:Spectrometry, Fluorescence; D013997:Time Factors; D014364:Tryptophan / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D007093:Imidazoles; D018036:Selenium Compounds; D006639:Histidine; C029899:imidazole; D014364:Tryptophan; C058667:cadmium selenide; D006861:Hydrogen Peroxide
keywords: Chemiluminescence; Enhancement; Histidine; Quantum dots; Tryptophan