scholarly journals A Multicolor Saccharide Sensing Chip Created by Layer-by-Layer Adsorption of a Boronic Acid-containing Polymer

2012 ◽  
Vol 47 ◽  
pp. 1153-1156
Author(s):  
Yasumasa Kanekiyo ◽  
Wakana Takayoshi
Keyword(s):  
Boronic Acid ◽  
Layer By Layer ◽  
Layer Adsorption

scholarly journals Multicolor saccharide-sensing chips created via layer-by-layer adsorption of boronic acid-containing polymers

2014 ◽  
Vol 192 ◽  
pp. 776-781 ◽  
Author(s):  
Wakana Takayoshi ◽  
Mitsuyuki Imajo ◽  
Mizuki Iijima ◽  
Marina Suzuki ◽  
Hiroki Yamamoto ◽  
...  
Keyword(s):  
Boronic Acid ◽  
Layer By Layer ◽  
Layer Adsorption

scholarly journals Capacitive Field-effect (bio-)chemical Sensors Based on Nanocrystalline Diamond Films

2009 ◽  
Vol 1203 ◽  
Author(s):  
Matthias Bäcker ◽  
Arshak Poghossian ◽  
Maryam H. Abouzar ◽  
Sylvia Wenmackers ◽  
Stoffel D. Janssens ◽  
...  
Keyword(s):  
Thin Films ◽  
Field Effect ◽  
High Sensitivity ◽  
Ph Sensitive ◽  
Nanocrystalline Diamond ◽  
Penicillin G ◽  
Layer By Layer ◽  
Label Free ◽  
High Coverage ◽  
Layer Adsorption

AbstractCapacitive field-effect electrolyte-diamond-insulator-semiconductor (EDIS) structures with O-terminated nanocrystalline diamond (NCD) as sensitive gate material have been realized and investigated for the detection of pH, penicillin concentration, and layer-by-layer adsorption of polyelectrolytes. The surface oxidizing procedure of NCD thin films as well as the seeding and NCD growth process on a Si-SiO2 substrate have been improved to provide high pH-sensitive, non-porous thin films without damage of the underlying SiO2 layer and with a high coverage of O-terminated sites. The NCD surface topography, roughness, and coverage of the surface groups have been characterized by SEM, AFM and XPS methods. The EDIS sensors with O-terminated NCD film treated in oxidizing boiling mixture for 45 min show a pH sensitivity of about 50 mV/pH. The pH-sensitive properties of the NCD have been used to develop an EDIS-based penicillin biosensor with high sensitivity (65-70 mV/decade in the concentration range of 0.25-2.5 mM penicillin G) and low detection limit (5 μM). The results of label-free electrical detection of layer-by-layer adsorption of charged polyelectrolytes are presented, too.

A Facile Layer-by-Layer Adsorption and Reaction Method to the Preparation of Titanium Phosphate Ultrathin Films

2005 ◽  
Vol 17 (13) ◽  
pp. 3563-3569 ◽  
Author(s):  
Qifeng Wang ◽  
Ling Zhong ◽  
Junqi Sun ◽  
Jiacong Shen
Keyword(s):  
Ultrathin Films ◽  
Titanium Phosphate ◽  
Layer By Layer ◽  
Reaction Method ◽  
Layer Adsorption

Amperometric glucose biosensor by means of electrostatic layer-by-layer adsorption onto polyaniline-coated polyester films

2010 ◽  
Vol 16 (3) ◽  
pp. 380-384 ◽  
Author(s):  
Young Jae Shin ◽  
Sun Hee Kim ◽  
Do Hyeon Yang ◽  
Hyoshik Kwon ◽  
Jae Sup Shin
Keyword(s):  
Glucose Biosensor ◽  
Layer By Layer ◽  
Layer Adsorption

scholarly journals Adsorption and Release of Rose Bengal on Layer-by-Layer Films of Poly(Vinyl Alcohol) and Poly(Amidoamine) Dendrimers Bearing 4-Carboxyphenylboronic Acid

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1854 ◽  
Author(s):  
Kentaro Yoshida ◽  
Akane Yamaguchi ◽  
Hiroki Midorikawa ◽  
Toshio Kamijo ◽  
Tetsuya Ono ◽  
...  
Keyword(s):  
Rose Bengal ◽  
Boronic Acid ◽  
Vinyl Alcohol ◽  
Acidic Solution ◽  
Phenylboronic Acid ◽  
Poly Vinyl Alcohol ◽  
Basic Solution ◽  
Layer By Layer ◽  
Lbl Films ◽  
H2o2 Solution

Phenylboronic acid-bearing polyamidoamine dendrimer (PBA-PAMAM)/poly(vinyl alcohol) (PVA) multilayer films were prepared through the layer-by-layer (LbL) deposition of PBA-PAMAM solution and PVA solution. PBA-PAMAM/PVA films were constructed successfully through the formation of boronate ester bonds between the boronic acid moiety in PBA and 1,3-diol units in PVA. When the (PBA-PAMAM/PVA)5 films were immersed in rose bengal (RB) solution, RB was adsorbed onto the LbL films. The amount of RB adsorbed was higher in the LbL films immersed in acidic solution than in basic solution. The release of RB from the LbL films was also promoted in the basic solution, while it was suppressed in the acidic solution. The boronic acid ester is oxidized to phenol by hydrogen peroxide (H2O2) and the carbon-boron bond is cleaved, so that the (PBA-PAMAM/PVA)5 films can be decomposed by immersion in H2O2 solution. Therefore, when RB-adsorbed (PBA-PAMAM/PVA)5 films were immersed in H2O2 solution, the release of RB was moderately promoted when the solution was weakly acidic.

Coating of Polyaniline Molecules on Cotton Fabric via Successive Ionic Layer Adsorption and Reaction (SILAR) Technique

2018 ◽  
Vol 775 ◽  
pp. 317-322
Author(s):  
John Raphael D. Barrios ◽  
Marvin U. Herrera
Keyword(s):  
Infrared Spectrum ◽  
Cotton Fabric ◽  
Surface Conductivity ◽  
Optimum Number ◽  
Layer By Layer ◽  
Layer Deposition ◽  
Layer Adsorption ◽  
Silar Technique ◽  
Probe Measurements ◽  
Ionic Layer

Cotton fabric was coated with polyaniline molecules using Successive Ionic Layer Adsorption and Reaction (SILAR) technique. This method provides layer by layer deposition of polyaniline molecules. Infrared spectrum showed the vibrational peaks attributed with the presence of polyaniline molecules on the samples. Four-point probe measurements were done to obtain the surface conductivity of the samples. Upon increasing the dipping cycles, the conductivity of cotton fabric significantly increases. The optimum number of dipping cycle is found to be at 130. Beyond the optimum dipping cycle, the conductivity starts to decrease.

Assembly of Alternating Polycation and DNA Multilayer Films by Electrostatic Layer-by-Layer Adsorption

2001 ◽  
Vol 2 (2) ◽  
pp. 463-468 ◽  
Author(s):  
Renjun Pei ◽  
Xiaoqiang Cui ◽  
Xiurong Yang ◽  
Erkang Wang
Keyword(s):  
Multilayer Films ◽  
Layer By Layer ◽  
Layer Adsorption
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