کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7139608 1462022 2018 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A dual-signals response electrochemiluminescence immunosensor based on PTC-DEPA/KCC-1 NCs for detection of procalcitonin
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
A dual-signals response electrochemiluminescence immunosensor based on PTC-DEPA/KCC-1 NCs for detection of procalcitonin
چکیده انگلیسی
Taking advantage of the dual-signals response at both positive and negative cycles in S2O82− solution, perylene-3,4,9,10-tetracarboxylic acid- N,N-Diisopropylethylenediamine/mesoporous fibrous silica nanocomposites (PTC-DEPA/KCC-1 NCs) were chosen as the luminophore signal probe for procalcitonin detection in this paper. In addition, a sandwich-type of electrochemiluminescene (ECL) immunosensor based on PTC-DEPA/KCC-1 NCs was developed for the first time. Because N,N-Diisopropylethylenediamine (DPEA) could provide electron to perylene-3,4,9,10-tetracarboxylic acid (PTCA), PTC-DEPA exhibited much higher luminous intensity compared with the PTCA molecule. Moreover, mesoporous fibrous silica particle (KCC-1) possessed a unique feature to further reduce diffusion limitation due to the dendritic fiber, which could enhance the loading amount and further increase the luminous intensity. Therefore, the functionalized PTC-DEPA/KCC-1 NCs were used to load the detection antibody (Ab2). In addition, Au@Ag core/shell nanoparticles (Au@Ag NPs) with excellent conductivity were synthesized to immobilize antibody (Ab1) with increased amount. Based on sandwiched immunoreactions, this developed strategy combining ECL immunosensor with excellent linearity in concentrations of procalcitonin from 0.05 pg mL−1 to 10 ng mL−1 and a detection limit of 0.017 pg mL−1, provided ample potential for further bioanalysis and clinical study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 267, 15 August 2018, Pages 525-532
نویسندگان
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