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

1996 ◽  
pp. 745 ◽  
Author(s):  
Keiichi Kimura ◽  
Takenobu Sunagawa ◽  
Masaaki Yokoyama
Keyword(s):  
Chemical Modification ◽  
Sol Gel ◽  
Ion Sensors ◽  
Neutral Carrier

Neutral Carrier-Type Ion Sensors Based on Sol−Gel-Derived Membranes Incorporating a Bis(crown ether) Derivative by Covalent Bonding

1998 ◽  
Vol 70 (20) ◽  
pp. 4309-4313 ◽  
Author(s):  
Keiichi Kimura ◽  
Takenobu Sunagawa ◽  
Setsuko Yajima ◽  
Saori Miyake ◽  
Masaaki Yokoyama
Keyword(s):  
Crown Ether ◽  
Sol Gel ◽  
Covalent Bonding ◽  
Ion Sensors ◽  
Neutral Carrier ◽  
Ether Derivative

Neutral-Carrier-Type Ion-Sensing Membranes Based on Sol-Gel-Derived Glass

1995 ◽  
Vol 24 (10) ◽  
pp. 967-967 ◽  
Author(s):  
Keiichi Kimura ◽  
Takenobu Sunagawa ◽  
Masaaki Yokoyama
Keyword(s):  
Sol Gel ◽  
Neutral Carrier ◽  
Ion Sensing

Sol-Gel Polymerization of Tetraalkoxygermanium and Organotrialkoxygermanium Monomers

1996 ◽  
Vol 431 ◽  
Author(s):  
Brigitta M. Baugher ◽  
Douglas A. Loy
Keyword(s):  
Chemical Modification ◽  
Sol Gel ◽  
Silica Gels ◽  
Germanium Oxide ◽  
Oxide Materials ◽  
Siloxane Bond ◽  
Mild Conditions ◽  
Condensation Reactions ◽  
Hydrolysis And Condensation ◽  
Opening Up

AbstractWhile the sol-gel polymerizations of tetraalkoxy- and organotrialkoxysilanes have been extensively studied, there have been few reports of similar investigations with the analogous tetraalkoxygermanium and organotrialkoxygermanium compounds. Germanium alkoxides have received less attention due, in part to their higher cost, but also their greater reactivity towards hydrolysis and condensation reactions. Germanium oxide materials are potentially interesting because the Ge-O-Ge linkage is labile (compared with the siloxane bond in silica gels and polysilsesquioxanes) opening up the possibility of further chemical modification of the polymeric architecture. This may permit hydrolytic reorganization of germanium oxide networks under relatively mild conditions. In this paper, we will present the results of our investigations of the solgel polymerizations of tetraethoxygermanium 1, tetraisopropoxygermanium 2, and methyltriethoxy-germanium 3 to afford network materials as both xerogels and aerogels.

Photocontrol of ion-sensor performances in neutral-carrier-type ion sensors based on liquid-crystalline membranes

2005 ◽  
pp. 5226 ◽  
Author(s):  
Syusuke Oosaki ◽  
Hisanobu Hayasaki ◽  
Yoshiaki Sakurai ◽  
Setsuko Yajima ◽  
Keiichi Kimura
Keyword(s):  
Liquid Crystalline ◽  
Ion Sensors ◽  
Neutral Carrier ◽  
Ion Sensor

Calix[4]arene Derivative Bearing π-Coordinate Substituents as Neutral Carrier for Silver Ion Sensors

1998 ◽  
Vol 27 (8) ◽  
pp. 833-834 ◽  
Author(s):  
Keiichi Kimura ◽  
Kenta Tatsumi ◽  
Setsuko Yajima ◽  
Saori Miyake ◽  
Hidefumi Sakamoto ◽  
...  
Keyword(s):  
Silver Ion ◽  
Ion Sensors ◽  
Arene Derivative ◽  
Neutral Carrier

scholarly journals Organofunctional Trialkoxysilane Sol-Gel Precursors for Chemical Modification of Textile Fibres

Tekstilec ◽  
2017 ◽  
Vol 60 (3) ◽  
pp. 198-213 ◽  
Author(s):  
Jelena Vasiljević ◽  
◽  
Brigita Tomšič ◽  
Ivan Jerman ◽  
Barbara Simončič ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Sol Gel ◽  
Textile Fibres

Supported sol–gel-derived membranes for neutral carrier-type ion-selective electrodes

2000 ◽  
Vol 10 (8) ◽  
pp. 1819-1824 ◽  
Author(s):  
Keiichi Kimura ◽  
Setsuko Yajima ◽  
Ken Okamoto ◽  
Masaaki Yokoyama
Keyword(s):  
Sol Gel ◽  
Ion Selective Electrodes ◽  
Neutral Carrier

Preparation and characterization of hydroxybutyl chitosan

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Bin Zhu ◽  
Changzheng Wei ◽  
Chunlin Hou ◽  
Qisheng Gu ◽  
Dajun Chen
Keyword(s):  
Chemical Modification ◽  
Sol Gel ◽  
Chitosan Solution ◽  
Water Soluble ◽  
Full Potential ◽  
Thermosensitive Polymer ◽  
New Type ◽  
Gel Phase ◽  
Further Development

AbstractThe insolubility in neutral condition is a major problem that confronts the further development of processing and uses of chitosan. Special emphasis has been put on the chemical modification of chitosan to explore its full potential. Studies on these methods are also encouraging and many kinds of water-soluble and alcohol-soluble derivatives have appeared. In this article, hydroxybutyl chitosan, a new type of thermosensitive polymer, was prepared through the chemical modification of 1,2-epoxybutane. Hydroxybutyl chitosan solution underwent sol/gel phase transition at a certain temperature lower than 20 °C, however, at high temperature, hydroxybutyl chitosan can form hydrogel with a certain mechanical strength. Hydroxybutyl chitosan could be an ideal themosensitive material applied in drug delivery system, tissue engineering and other biomedical fields.

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