An amplified chemiluminescence system based on Si-doped carbon dots for detection of catecholamines

作者：Amjadi Mohammad^*; Hallaj Tooba; Manzoori Jamshid L; Shahbazsaghir Tahmineh

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2018, 201: 223-228.

DOI：10.1016/j.saa.2018.04.058

• Chemiluminescence
• Carbon nanomaterials
• Si-doped carbon dots
• Surfactant
• Catecholamines

We report on a chemiluminescence (CL) system based on simultaneous enhancing effect of Si-doped carbon dots (Si-CDs) and cetyltrimethylammonium bromide (CTAB) on HCO3--H2O2 reaction. The possible CL mechanism is investigated and discussed. Excited-state Si-CDs was found to be the final emitting species, which are probably produced via electron and hole injection by oxy-radicals. The effect of several other heteroatom-doped CDs and undoped CDs was also investigated and compared with Si-CDs. Furthermore, it was found that catecholamines such as dopamine, adrenaline and noradrenaline remarkably diminish the CL intensity of Si-CD-HCO3--H2O2-CTAB system. By taking advantage of this fact, a sensitive probe was designed for determination of dopamine, adrenaline and noradrenaline with a limit of detection of 0.07, 0.60 and 0.01 NM, respectively. The method was applied to the determination of catecholamines in human plasma samples.

• 出版日期2018-8-5