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.

scholarly journals Sugar-Responsive Layer-by-Layer Film Composed of Phenylboronic Acid-Appended Insulin and Poly(vinyl alcohol)

2018 ◽  
Vol 66 (4) ◽  
pp. 368-374 ◽  
Author(s):  
Chihiro Takei ◽  
Yui Ohno ◽  
Tomohiro Seki ◽  
Ryotaro Miki ◽  
Toshinobu Seki ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Phenylboronic Acid ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Layer Film

Glucose-induced decomposition of layer-by-layer films composed of phenylboronic acid-bearing poly(allylamine) and poly(vinyl alcohol) under physiological conditions

2015 ◽  
Vol 3 (39) ◽  
pp. 7796-7802 ◽  
Author(s):  
Katsuhiko Sato ◽  
Mao Takahashi ◽  
Megumi Ito ◽  
Eiichi Abe ◽  
Jun-Ichi Anzai
Keyword(s):  
Glucose Oxidase ◽  
Vinyl Alcohol ◽  
Phenylboronic Acid ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Physiological Conditions ◽  
Induced Decomposition

Phenylboronic acid-bearing poly(allylamine)/poly(vinyl alcohol) layer-by-layer films coupled with glucose oxidase decomposed in the presence of glucose under physiological conditions.

H2O2-Induced Decomposition of Layer-by-Layer Films Consisting of Phenylboronic Acid-Bearing Poly(allylamine) and Poly(vinyl alcohol)

Langmuir ◽  
2014 ◽  
Vol 30 (31) ◽  
pp. 9247-9250 ◽  
Author(s):  
Katsuhiko Sato ◽  
Mao Takahashi ◽  
Megumi Ito ◽  
Eiichi Abe ◽  
Jun-ichi Anzai
Keyword(s):  
Vinyl Alcohol ◽  
Phenylboronic Acid ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Induced Decomposition

Sugar response of layer-by-layer films composed of poly(vinyl alcohol) and poly(amidoamine) dendrimer bearing 4-carboxyphenylboronic acid

2014 ◽  
Vol 293 (4) ◽  
pp. 1043-1048 ◽  
Author(s):  
Keisuke Suwa ◽  
Munenari Nagasaka ◽  
Satoshi Niina ◽  
Yuya Egawa ◽  
Toshinobu Seki ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Sugar Response

Bioinspired Layer-by-Layer Poly(vinyl alcohol) - Graphene Oxide Nanocomposites

2012 ◽  
Vol 1410 ◽  
Author(s):  
Charline Sellam ◽  
Zhi Zhai ◽  
Hediyeh Zahabi ◽  
Hua Deng ◽  
Emiliano Bilotti ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Composite Films ◽  
Good Control ◽  
Layered Composite ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Synergic Effect ◽  
Transparent Film ◽  
Spraying Method

ABSTRACTA bottom-up approach for poly(vinyl alcohol) (PVA) - graphene oxide (GO) nanocomposites using a spraying method is presented. Very simple and versatile, spraying allows to build-up uniform layered composite films with good control on the structure of each layer. 150 bi-layers were deposited to create a transparent film with improved mechanical properties at a loading of 5.4 wt.% GO. The Young’s modulus and strength of these films doubled or nearly doubled which is believed to be due to a synergic effect as a result of the nanoscale organization of the composite by the 2D nanofiller, and hydrogen bonding between the PVA and the GO.

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