Stable gold graphitic nanocapsule doped hydrogels for efficient photothermal antibacterial applications

2019 ◽  
Vol 55 (37) ◽  
pp. 5359-5362 ◽  
Author(s):  
Ming-Lu Xu ◽  
Lu-Yao Guan ◽  
Sheng-Kai Li ◽  
Long Chen ◽  
Zhuo Chen
Keyword(s):  
Vinyl Alcohol ◽  
Near Infrared ◽  
Antibacterial Properties ◽  
Infrared Laser ◽  
Gold Nanorod ◽  
Poly Vinyl Alcohol ◽  
Highly Efficient

We have fabricated gold nanorod graphitic nanocapsule (AuNR@G) doped poly(vinyl alcohol) (PVA)/chitosan (CS) hydrogels, which possessed highly efficient and stable photothermal antibacterial properties under the irradiation of a near-infrared laser.

Phthalocyanine functionalized poly(vinyl alcohol)s via CuAAC click chemistry and their antibacterial properties

2020 ◽  
Vol 17 (6) ◽  
pp. 1587-1596
Author(s):  
Ilke Gurol ◽  
Cagatay Altinkok ◽  
Esra Agel ◽  
Cihat Tasaltin ◽  
Mahmut Durmuş ◽  
...  
Keyword(s):  
Click Chemistry ◽  
Vinyl Alcohol ◽  
Antibacterial Properties ◽  
Poly Vinyl Alcohol

scholarly journals Fabrication of photothermally active poly(vinyl alcohol) films with gold nanostars for antibacterial applications

2018 ◽  
Vol 9 ◽  
pp. 2040-2048 ◽  
Author(s):  
Mykola Borzenkov ◽  
Maria Moros ◽  
Claudia Tortiglione ◽  
Serena Bertoldi ◽  
Nicola Contessi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vinyl Alcohol ◽  
Near Infrared ◽  
Polymeric Materials ◽  
Photothermal Effect ◽  
Poly Vinyl Alcohol ◽  
Broad Application ◽  
Gold Nanostars ◽  
Wide Range ◽  
Spherical Gold Nanoparticles

The unique photothermal properties of non-spherical gold nanoparticles under near-infrared (NIR) irradiation find broad application in nanotechnology and nanomedicine. The combination of their plasmonic features with widely used biocompatible poly(vinyl alcohol) (PVA) films can lead to novel hybrid polymeric materials with tunable photothermal properties and a wide range of applications. In this study, thin PVA films containing highly photothermally efficient gold nanostars (GNSs) were fabricated and their properties were studied. The resulting films displayed good mechanical properties and a pronounced photothermal effect under NIR irradiation. The local photothermal effect triggered by NIR irradiation of the PVA-GNS films is highly efficient at killing bacteria, therefore providing an opportunity to develop new types of protective antibacterial films and coatings.

scholarly journals Mussel-Inspired Approach to Constructing Dual Network Coated Layered Clay for Enhanced Barrier and Antibacterial Properties of Poly(vinyl alcohol) Nanocomposites

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2093
Author(s):  
Long Mao ◽  
Jianda Xie ◽  
Huiqing Wu ◽  
Yuejun Liu
Keyword(s):  
Vinyl Alcohol ◽  
Antibacterial Properties ◽  
Water Vapor Permeability ◽  
Poly Vinyl Alcohol ◽  
Vapor Permeability ◽  
One Pot ◽  
Solution Casting Method ◽  
Uv Transmittance ◽  
Layered Clay ◽  
Double Hydroxides

Inspired by complexation and mussel adhesion of catechol groups in tannic acid (TA), organophilic layered double hydroxides (LDHs@TA-Ti) were synthesized by forming a one-pot assembled TA-titanium (Ti) dual network coating on the surface of layered clay for the first time. LDHs@TA-Ti/poly(vinyl alcohol) (PVA) nanocomposites were prepared by the solution casting method. The results show that TA-Ti(IV) and TiO2 coordination compounds are simultaneously formed due to hydrolysis of titanium tetrachloride and complexation of TA in aqueous solution. Upon TA-Ti coatings onto the surface of LDHs, the antibacterial rate of LDHs@TA-Ti is up to 99.98%. Corresponding LDHs@TA-Ti/PVA nanocomposites also show outstanding antibacterial properties. Compared with pure PVA, LDHs@TA-Ti/PVA nanocomposites show a 40.9% increase in tensile strength, a 17.5% increase in elongation at break, a 35.9% decrease in oxygen permeability and a 26.0% decrease in water vapor permeability when adding 1 wt % LDHs@TA-Ti. UV transmittance (at 300 nm) of LDHs@TA-Ti/PVA nanocomposites decrease by 99.4% when the content of LDHs@TA-Ti reaches 3 wt %. These results indicate that PVA matrix incorporated with LDHs@TA-Ti could be used as a potential active packaging material to extend the shelf life of food products.

Highly efficient and stable MoS2FETs with reversible n-doping using a dehydrated poly(vinyl-alcohol) coating

Nanoscale ◽  
2017 ◽  
Vol 9 (1) ◽  
pp. 258-265 ◽  
Author(s):  
César J. Lockhart de la Rosa ◽  
Amirhasan Nourbakhsh ◽  
Markus Heyne ◽  
Inge Asselberghs ◽  
Cedric Huyghebaert ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Highly Efficient ◽  
N Doping
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