scholarly journals Chiral platinum–polypyrrole hybrid films as efficient enantioselective actuators

2019 ◽  
Vol 55 (73) ◽  
pp. 10956-10959 ◽  
Author(s):  
Sunpet Assavapanumat ◽  
Bhavana Gupta ◽  
Gerardo Salinas ◽  
Bertrand Goudeau ◽  
Chularat Wattanakit ◽  
...  
Keyword(s):  
Hybrid Film ◽  
Hybrid Films ◽  
Mesoporous Platinum

A hybrid film composed of chiral encoded mesoporous platinum and polypyrrole shows differential wireless actuation as a function of the chiral nature of an enantiomer present in solution.

Ordered porous structure hybrid films generated by breath figures for directional water penetration

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88471-88476 ◽  
Author(s):  
Tianqi Guo ◽  
Keyu Han ◽  
Liping Heng ◽  
Moyuan Cao ◽  
Lei Jiang
Keyword(s):  
Porous Structure ◽  
Hybrid Film ◽  
Hybrid Films ◽  
Substrate Roughness ◽  
Water Penetration ◽  
Breath Figures ◽  
Ordered Porous

A highly ordered open-pore hybrid film was fabricated by controlling the substrate roughness and wettability. The composite with different wettability on the two side resulted in an attractive unidirectional water-penetration function (see figure).

scholarly journals Physico-Chemical Characterization and Antimicrobial Properties of Hybrid Film Based on Saponite and Phloxine B

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 325
Author(s):  
Nitin Chandra teja Dadi ◽  
Matúš Dohál ◽  
Veronika Medvecká ◽  
Juraj Bujdák ◽  
Kamila Koči ◽  
...  
Keyword(s):  
Hybrid Film ◽  
Antimicrobial Properties ◽  
Chemical Characterization ◽  
Layered Silicate ◽  
Contact Angles ◽  
Exchange Capacity ◽  
Resistant Bacteria ◽  
Hybrid Films ◽  
Water Contact ◽  
Physico Chemical

This research was aimed at the preparation of a hybrid film based on a layered silicate saponite (Sap) with the immobilized photosensitizer phloxine B (PhB). Sap was selected because of its high cation exchange capacity, ability to exfoliate into nanolayers, and to modify different surfaces. The X-ray diffraction of the films confirmed the intercalation of both the surfactant and PhB molecules in the Sap film. The photosensitizer retained its photoactivity in the hybrid films, as shown by fluorescence spectra measurements. The water contact angles and the measurement of surface free energy demonstrated the hydrophilic nature of the hybrid films. Antimicrobial effectiveness, assessed by the photodynamic inactivation on hybrid films, was tested against a standard strain and against methicillin-resistant bacteria of Staphylococcus aureus (MRSA). One group of samples was irradiated (green LED light; 2.5 h) and compared to nonirradiated ones. S. aureus strains manifested a reduction in growth from 1-log10 to over 3-log10 compared to the control samples with Sap only, and defects in S. aureus cells were proven by scanning electron microscopy. The results proved the optimal photo-physical properties and anti-MRSA potential of this newly designed hybrid system that reflects recent progress in the modification of surfaces for various medical applications.

Novel Bionic Biomembrane Supported by Gold Nanoparticles/Cellulose Hybrid Films

2012 ◽  
Vol 84 ◽  
pp. 13-18 ◽  
Author(s):  
Zhi Ming Liu ◽  
Yuan Lin An ◽  
Wen Jian Wu
Keyword(s):  
Gold Nanoparticles ◽  
Aqueous Solutions ◽  
Lipid Membranes ◽  
Hybrid Film ◽  
Bilayer Lipid Membranes ◽  
Hybrid Films ◽  
Bilayer Lipid ◽  
Long Period ◽  
Highly Active ◽  
The Stability

As one of the main methods to study biomembranes, the construction of highly active bionic biomembrane systems is very important. Based on the hybrid film of gold nanoparticles and cellulose, a novel system of bionic biomembrane is demonstrated. The ratio effects of lecithin to cholesterin on the stability of bilayer lipid membranes are studied. Lipid solutions that can form stable membranes in the air and in some aqueous solutions are prepared. The bionic biomembranes composed of bilayer lipid membranes and hybrid films of gold nanoparticles and cellulose can be sustained for a long period in aqueous solutions. The bionic biomembranes also exhibit some interesting electrochemical properties.

Corrosion Resistance of Hybrid Films Applied on TiN Plate: Precursor Solution Acidified with Hydrochloric Acid

2014 ◽  
Vol 775-776 ◽  
pp. 370-374
Author(s):  
Sandra Raquel Kunst ◽  
Gustavo Alberto Ludwig ◽  
Cláudia Trindade Oliveira ◽  
Joseane Santana ◽  
Victor Hugo Vitorino Sarmento ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Hydrochloric Acid ◽  
Crack Formation ◽  
Hybrid Film ◽  
Precursor Solution ◽  
Dip Coating ◽  
Hybrid Films ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Alkoxide Precursors

The aim of this work is to coat tin plate with a hybrid film obtained from a sol consisting of alkoxide precursors: 3 - (trimethoxysilylpropyl) methacrylate (TMSM), poly (methyl methacrylate) PMMA with and without tetraethoxysilane (TEOS) addition. The pH = 3 was adjusted with hydrochloric acid. The films were obtained by dip-coating process, cured for 3 hours at 160 ° C, and characterized for their electrochemical behavior. The hydrophobicity of the film was determined by the contact angle measurements and its morphology was evaluated by SEM. Results showed that the hybrid films studied presented good performance concerning their corrosion resistance in tin plate. Besides the addition of TEOS, it has contributed to the increase of the film thickness, however at the same time promoting the crack formation, which compromises the corrosion resistance of the coated tin plate.

Densely packed hybrid films comprising SnO2 and reduced graphite oxide for high-density electrochemical capacitors

2016 ◽  
Vol 4 (41) ◽  
pp. 16175-16183 ◽  
Author(s):  
Segi Byun ◽  
Byungha Shin
Keyword(s):  
Graphite Oxide ◽  
Hybrid Film ◽  
Electrochemical Capacitors ◽  
High Density ◽  
Simple Solution ◽  
Hybrid Films ◽  
Supercapacitor Electrode ◽  
Reduced Graphite Oxide

In this work, compact SnO2/rGO hybrid film as a supercapacitor electrode has been fabricated using a simple solution-based two-step strategy.

Effect of Different Dopants in Films TEOS/MPTS Used to Protect the Carbon Steel

2014 ◽  
Vol 805 ◽  
pp. 167-171 ◽  
Author(s):  
F.S. Silva ◽  
P.H. Suegama ◽  
W.P. Silva ◽  
A.W. Rinaldi ◽  
N.L.C. Domingues ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Open Circuit Potential ◽  
Hybrid Film ◽  
Electrochemical Impedance ◽  
Open Circuit ◽  
The Other ◽  
Nacl Solution ◽  
Hybrid Films ◽  
Impedance Measurements ◽  
Current Densities

Schiff bases m-toluene N-Salicylideneaniline (m-TOL), (B) m-nitro-N- Salicylideneaniline (m-NTR) and (C) m-methoxy-N-salicylideneaniline (m-MTX) and cerium ions were studied added to 3.5 wt.% NaCl solution and added to the hybrid film based tetraethoxysilane (TEOS) e 3-methacryloxypropyltrimethoxysilane (MPTS). The polarization measurements showed lower current densities for the steel in NaCl with m-MTX, indicating that the m-MTX may be acting as an inhibitor. The hybrid films were doped with the m-MTX, Ce (III) or Ce (IV). Electrochemical measurements of open circuit potential (EOC), polarization curves and electrochemical impedance spectroscopy (EIS), were used to evaluate the corrosion behavior of the hybrid films. According Electrochemical Impedance measurements, all hybrid films, provided protection to the carbon steel. The films doped with Ce (IV), provided greater protection than the other, which indicates that this is the most suitable dopant for use in films.

Reduced graphene oxide–polyethylene oxide hybrid films for toluene sensing at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97840-97847 ◽  
Author(s):  
Yuanjie Su ◽  
Guangzhong Xie ◽  
Jun Chen ◽  
Hongfei Du ◽  
Hulin Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Polyethylene Oxide ◽  
Room Temperature ◽  
Hybrid Film ◽  
Bilayer Film ◽  
Hybrid Films ◽  
Reduced Graphene

A reduced graphene oxide (RGO)–polyethylene oxide (PEO) hybrid film was constructed with composite and bilayer film structures for effective ambient toluene detection.

Improvement of UV Protection Properties in Poly(Methyl Methacrylate) Sheet Coated by Titanium Dioxide/ Poly(Methyl Methacrylate) Hybrid Film

2008 ◽  
Vol 55-57 ◽  
pp. 501-504 ◽  
Author(s):  
M. Panapoy ◽  
P. Wannasut ◽  
Bussarin Ksapabutr
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Methyl Methacrylate ◽  
Hybrid Film ◽  
Anatase Tio2 ◽  
Uv Absorption ◽  
Hybrid Films ◽  
Poly Methyl Methacrylate ◽  
Pmma Sheet ◽  
Vis Spectroscopy

Titanium dioxide/poly(methyl methacrylate) (TiO2/PMMA) hybrid films with various amounts of TiO2 containing PMMA resin on PMMA sheets were produced by a tape casting method. TiO2 nanocrystals were prepared using electrospraying process at 400oC under high electric field of 3 kV/cm. The as-sprayed and annealed TiO2 powders were characterized by Raman spectroscopy, XRD, SEM and TEM. The UV absorption for both pristine PMMA sheet and TiO2/PMMA hybrid film on PMMA sheet was measured using UV-Vis spectroscopy. The as-sprayed and annealed TiO2 powders showed anatase preferred orientation. They have higher UV absorption in the range of wavelength between 230 and 370 nm than commercial anatase TiO2 nanopowders. Moreover, the visible light transmittances of anatase TiO2/PMMA hybrid films on PMMA sheets in the range of wavelength between 400 and 800 nm was comparable with those derived from pristine PMMA sheets. Therefore, the resulting hybrid films can block out the UV rays, but are transparent to visible light.

scholarly journals Fabrication of Flexible Agnws/Cellulose Hybrid Film with Heat Preservation and Antibacterial Properties for Agriculture Application

2021 ◽  
Author(s):  
Yu Chen ◽  
Shuanghong Yang ◽  
Zhiwei Qiu ◽  
Yuqi Li ◽  
Fengxian Qiu ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Hybrid Film ◽  
Supply Voltage ◽  
Silver Nanowires ◽  
Antibacterial Properties ◽  
Building Blocks ◽  
Electrical Heating ◽  
General Strategy ◽  
Hybrid Films ◽  
Agricultural Films

Abstract In the view of sustainable development and environment protection, degradable agricultural films with on-demand thermal insulation properties have attracted growing research interest in the last few decades due to the deteriorating environment and extreme climate on the growth and existence of crops. Here, a general strategy has been developed to fabricate degradable silver nanowires modified cellulose (AgNWs/cellulose) hybrid film with controllable thermal insulation and antibacterial properties by using plant cellulose and AgNWs as building blocks, as well as their agriculture application. The results showed that the AgNWs were evenly dispersed in the three-dimensional grid of cellulose, formed a film that could withstand a certain tensile force, and have good thermal stability. Due to the excellent electrical conductivity, the AgNWs/cellulose hybrid films can provide excellent Joule heating, generating rapid thermal response and uniform electrical heating at a low supply voltage of 3 V for extra warmth. In the antibacterial tests against Escherichia coli and Staphylococcus aureus, the AgNWs/cellulose hybrid film exhibit large diameters of inhibition zones, revealing the high antibacterial activity. Additionally, the AgNWs/cellulose hybrid films showed highly stretchable behavior by delivering a breaking strain of 1.5% with a tensile stress of 0.45 MPa owing to the cross-linked structures of cellulose and AgNWs. Based on the above properties, this study not only provides a potential strategy for the fabrication of flexible and biodegradable agricultural films but also may provide new insights for agricultural thermal management.

scholarly journals An Industrial Scale Synthesis of Adipicdihydrazide (ADH)/Polyacrylate Hybrid with Excellent Formaldehyde Degradation Performance

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 86 ◽  
Author(s):  
Rui Zhu ◽  
Renjie Chen ◽  
Yunxia Duo ◽  
Saigang Zhang ◽  
Delong Xie ◽  
...  
Keyword(s):  
Hybrid Film ◽  
Film Formation ◽  
Industrial Scale ◽  
Hybrid Films ◽  
Excellent Performance ◽  
Formaldehyde Removal ◽  
Mapping Analysis ◽  
Formaldehyde Degradation ◽  
Polymer Latex ◽  
Scanning Electron

A simple and versatile route for industrial scale synthesis of adipicdihydrazide (ADH)/polymer hybrids with excellent performance of formaldehyde degradation is proposed in this paper. The ADH compound is uniformly dispersed in poly(methyl methacrylate-butyl acrylate-methacrylic acid) (P(MMA-BA-MAA)) latex, which is validated by UV and dispersibility tests. The results illustrate that ADH has excellent compatibility and dispersion stability without affecting the film formation of the polymer latex. Furthermore, scanning electron microscope (SEM) and mapping analysis of the hybrid films also demonstrate that ADH is homogenously dispersed in the polymer matrix. Compared with neat polymers, the thermal properties of hybrid films are improved, for example, T0.5 increases by 8.3 °C. According to qualitative tests of the 4-amino-3-hydrazino-5-mercapto-1,2,4-triazol-red/green/blue (AHMT-RGB) method, the hybrid films demonstrate high formaldehyde removal efficiency. On the basis of the semi-quantitative test of Fourier Transform infrared spectroscopy (FTIR) measurements, the rate of formaldehyde degradation can reach 1.034 × 102 mol/(h·m3) for the hybrid film with 5 wt% ADH.

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