TY - JOUR
T1 - An innovative ECL sensor based on AuNPs linker for Ru(bpy)32+ molecules doped onto an alkaline pretreated poly(4-aminodiphenylamine) film
AU - Al-Hinaai, Mohammed M.
AU - Kyaw, Htet H.
AU - Al-Harthi, Salim H.
AU - Khudaish, Emad A.
N1 - Funding Information:
The authors would like to thank The Research Council (TRC) and Sultan Qaboos University (SQU), Sultanate of Oman , for supporting this work by the research grant numbers ( RC/SCI/CHEM/11/01 ) and ( IG/SCI/CHEM/16/03 ), respectively.
Publisher Copyright:
© 2017
PY - 2018/3
Y1 - 2018/3
N2 - An innovative construction approach relies on incorporation of gold nanoparticles (AuNPs) as a sandwich linking species between two assembled layers composed of tris(2,2′-bipyridyl)ruthenium(II), Ru(bpy)32+. The entire luminescent system is doped at an alkaline treated polymeric film made of poly(4-aminodiphenylamine), t-Padpa, originally deposited at the glassy carbon electrode by repetitive electrochemical scanning. The surface morphology and the composition of the proposed (Ru.AuNPs.Ru.t-Padpa) sensor along with its electrochemical properties were studied using Atomic Force Microscopy (AFM), X-Ray Photoelectron Spectroscopy (XPS) and Electrochemical Impedance Spectroscopy (EIS) methods The analytical performance of the developed sensor and its stability were tested using tripropyl amine (TPA) as a typical co-reactant in the development of ECL sensors. The ECL system shows a remarkable sensitivity towards TPA quantification with a detection limit (3σ) of 10 nM (1.4 ppb). The proposed sensor exhibited a greater efficiency and higher stability over the native ruthenium doped polymer (Ru.t-Padpa) evaluated by its performance for a certain shelf life-time. The present approach confirms the fabrication of a robust and efficient sensor characterized by the parallel operative effects of both AuNPs and the available concentrated surface luminescent molecules.
AB - An innovative construction approach relies on incorporation of gold nanoparticles (AuNPs) as a sandwich linking species between two assembled layers composed of tris(2,2′-bipyridyl)ruthenium(II), Ru(bpy)32+. The entire luminescent system is doped at an alkaline treated polymeric film made of poly(4-aminodiphenylamine), t-Padpa, originally deposited at the glassy carbon electrode by repetitive electrochemical scanning. The surface morphology and the composition of the proposed (Ru.AuNPs.Ru.t-Padpa) sensor along with its electrochemical properties were studied using Atomic Force Microscopy (AFM), X-Ray Photoelectron Spectroscopy (XPS) and Electrochemical Impedance Spectroscopy (EIS) methods The analytical performance of the developed sensor and its stability were tested using tripropyl amine (TPA) as a typical co-reactant in the development of ECL sensors. The ECL system shows a remarkable sensitivity towards TPA quantification with a detection limit (3σ) of 10 nM (1.4 ppb). The proposed sensor exhibited a greater efficiency and higher stability over the native ruthenium doped polymer (Ru.t-Padpa) evaluated by its performance for a certain shelf life-time. The present approach confirms the fabrication of a robust and efficient sensor characterized by the parallel operative effects of both AuNPs and the available concentrated surface luminescent molecules.
KW - Electrochemiluninescence sensors
KW - Gold nanoparticles
KW - Poly(4-aminodiphenyl-amine)
KW - Tris(bipyridyl) ruthenium(II)
UR - http://www.scopus.com/inward/record.url?scp=85032722079&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85032722079&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2017.11.001
DO - 10.1016/j.snb.2017.11.001
M3 - Article
AN - SCOPUS:85032722079
SN - 0925-4005
VL - 257
SP - 460
EP - 468
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -