Chemical modification of sol-gel-derived glass by a neutral carrier for ion sensors

Kimura, Kazuhiro; Sunagawa, Takenobu; Yokoyama, Masaaki

doi:10.1039/cc9960000745

Cited by 26 publications

(22 citation statements)

References 5 publications

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“…Kimura and coworkers [24] have prepared a leak free ion-sensing membrane from a bis(12-crown-4) modified alkoxysilane (Fig. 1, lb).…”

Section: Chemical Sensorsmentioning

confidence: 98%

“…This sensor exhibited high selectivity toward Na +, good response times, and enhanced stability relative to the physically doped analog. In terms of biocompatibility, stability, and toxicity, the silicate matrix may prove to be a better matrix than traditional polymeric materials such as lb [24] lc [24] O H 4> 4>si ose,3…”

Section: Chemical Sensorsmentioning

confidence: 99%

“…Since the reagent is covalently attached to the siloxane framework, it can not leach out of the matrix. The feasibility of this approach has recently been demonstrated by a number of research groups including those of Avnir [23], Kimura [24], and Lev [25] for the development of a leak-free pH sensor, ion-sensing membrane, and an amperometric sensor for glucose, respectively. Avnir and coworkers [23] synthesized a methyl red alkoxysilane (Fig.…”

Section: Chemical Sensorsmentioning

confidence: 99%

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Analytical applications of organically modified silicates

Collinson

1998

Mikrochim Acta

124

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Abstract. Inorganic-organic hybrid materials prepared by the sol-gel process have become an attractive field of study due to the immense versatility associated with this method of composite material preparation. The blending of inorganic precursors with organosilicon reagents enables unique materials to be fabricated with the desired chemical and physical characteristics. The ability to control the interfacial polarity, the degree of porosity, and the chemical functionality in the matrix has been shown to be a powerful tool in the design of materials for sensor, optical, chromatographic, and catalytic applications. In this review, the preparation of the organically modified silicates (ORMOSILs) where the individual precursors are covalently bound to each other is discussed and selected examples of their potential usefulness in analytical applications is presented.

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“…Kimura and coworkers [24] have prepared a leak free ion-sensing membrane from a bis(12-crown-4) modified alkoxysilane (Fig. 1, lb).…”

Section: Chemical Sensorsmentioning

confidence: 98%

Section: Chemical Sensorsmentioning

confidence: 99%

Section: Chemical Sensorsmentioning

confidence: 99%

See 1 more Smart Citation

Analytical applications of organically modified silicates

Collinson

1998

Mikrochim Acta

124

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“…Kimura et al [214] proposed a sol-gel membrane containing the alkoxysilyl bis(crown ether) derivative for the fabrication of sodium-sensitive field-effect transistors, exhibiting a high Na + sensitivity ( Table 1). The use of covalently bonded reagents prevents their leaching from the membrane, contrary to sol-gel glass membranes simply encapsulating neutral carriers [222].…”

Section: Sol-gel Silicate Modified Electrodesmentioning

confidence: 99%

“…The sol-gel-derived (modified) silicas are mainly involved in the development of biosensors, but some analytical determinations performed without the participation of any biological material, were reported in the literature [196,[214][215][216][217][218][219][220][221].…”

Section: Sol-gel Silicate Modified Electrodesmentioning

confidence: 99%

Analytical Applications of Silica-Modified Electrodes -A Comprehensive Review

Walcarius

1999

Electroanalysis

150

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This article aims to review the electroanalytical applications of chemically modified electrodes involving silica and silica-containing matrices. After a brief introduction to silica chemistry, the implication of pure and grafted silicas in electrochemistry, as well as that of the silica-based materials originating from the sol-gel technology, will be discussed. The interest of silica-modified electrodes (SiO 2 -MEs) with respect to electroanalysis will be pointed out by means of several examples. In the last five years, successful applications of SiO 2 -MEs have been achieved. Among them, silica grafted with inorganic films or organic moieties was successfully applied to the selective preconcentration or the electrocatalytic detection of various analytes. Also, the ability of the sol-gel chemistry to encapsulate enzymes within a silica matrix without preventing its activity was exploited in the development of new amperometric biosensors. These promising fields are thought to lead to significant advances in the near future, because of the explosive growth in both the synthesis of novel mesoporous organically-modified silica-based materials and the huge development of sol-gel chemistry in tailoring and construction of new modified electrodes.

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