Tris(2,2′‐bipyridyl) Ruthenium(II) Doped Silica Film Modified Indium Tin Oxide Electrode and Its Electrochemiluminescent Properties

Abstract

An approach was reported to synthesize silica hybridized ruthenium bipyridyl complex through amidation reaction by covalent attachment of bis(bipyridyl)-4,4'-dicarboxy-2,2'-bipyridyl-ruthenium to (3-aminopropyl)-triethoxysilane. The hybrid complex then was gelatinized through acid catalytic hydrolysis method and a sol-gel modified indium tin oxide electrode was prepared via spin coating technique. As prepared indium tin oxide electrode possesses good stability therein with excellent electrochemiluminescence behavior.

Electrochemiluminescent Systems as Devices and Sensors

“…The complex Ru(bipy) 2 (Si-bipy) 2 þ was gelatinized and spin coated onto an ITO electrode to make modified ITO electrode with excellent ECL behavior. 292,293 The above-listed examples show that many different immobilization procedures have been applied in fabrication of solid-state devices for ECL based sensing. Due to possible practical application one can expect, however, that this particular aspect of ECL will be object of further intensive studies and obtained results will allow construction of a still-better solid-state ECL detector.…”

“…Of particular note is the rapid development in such field in the last years resulted in the fabrication of a broad spectrum of the DNA biosensor and detectors based on the Ru(bipy) 3 2 þ ECL tagging. 245,292,293,299,[302][303][304][305][306] To increase the ECL sensitivity, the multiple ECL labels technique has been developed. Instead single Ru(bipy) 3 2 þ molecule the multi label technique apply the assembled set of ECL luminophores attached to probe used in molecular recognition.…”

Ruthenium Polypyridine Complexes Combined with Oligonucleotides for Bioanalysis: A Review

“…Derived from the simple and inexpensive platform offered by electrochemical DNA sensing, a more sensitive analytical strategy has been proposed, namely, the ECL-based DNA detection. ECL based on Ru(bpy) 3 2+ and its analogues has been widely used in detection of many important analytes including metal ions, bioactive small molecules, drugs, protein, DNA, bacteria, cancer cells and so on with high selectivity and sensitivity [65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,…”

Advances in electrochemiluminescence analysis

“…泛用于生物传感器的构建. Wang等 [25] 图 9 空白(a)和luminol在有H 2 O 2 (c)和无H 2 O 2 (b)时在不锈 钢电极上的电化学发光示意图 [21] (网络版彩图) Figure 9 ECL intensity curves of (a) blank and luminol (c) with and (b) without H 2 O 2 measured at stainless steel electrode [21] (color online).…”