ATTENUATED TOTAL REFLECTION AND EMISSION PROPERTIES OF SELF-ASSEMBLED LAYER-BY-LAYER FILMS CONTAINING AZOBENZENE DYE

2003 ◽  
Vol 407 (1) ◽  
pp. 105-113
Author(s):  
Keizo Kato ◽  
Junichi Kawashima ◽  
Kazunari Shinbo ◽  
Futao Kaneko ◽  
Keizo Kato ◽  
...  
Keyword(s):  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Layer By Layer ◽  
Emission Properties ◽  
Self Assembled ◽  
Self Assembled Layer

scholarly journals Preparation and Antifouling Property of Polyurethane Film Modified by PHMG and HA Using Layer-by-Layer Assembly

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 934
Author(s):  
Huihui Yuan ◽  
Chenli Xue ◽  
Jiaqian Zhu ◽  
Zhaogang Yang ◽  
Minbo Lan
Keyword(s):  
Protein Adsorption ◽  
Bacterial Adhesion ◽  
Attenuated Total Reflection ◽  
Layer By Layer ◽  
Water Contact ◽  
Antibacterial Performance ◽  
Atomic Force ◽  
Polyurethane Film ◽  
Self Assembled ◽  
Self Assembled Layer

To reduce the possibility of bacterial infection and implant-related complications, surface modification on polyurethane (PU) film is an ideal solution to endow hydrophobic PU with antibacterial and antifouling properties. In this work, a variety of polyhexamethylene guanidine/ hyaluronic acid (PHMG/HA) multilayer films were self-assembled layer-by-layer on PU films using polyanions, carboxyl-activated HA, and polycations PHMG by controlling the concentration of these polyelectrolytes as well as the number of layers self-assembled. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) spectra, water contact angle (WCA), and A Atomic force microscope (AFM) of PU and modified PU films were studied. Protein adsorption and bacterial adhesion as well as the cytotoxicity against L929 of the film on selected PU-(PHMG/HA)5/5-5 were estimated. The results showed that PU-(PHMG/HA)5/5-5 had the best hydrophilicity among all the prepared films, possessing the lowest level of protein adsorption. Meanwhile, this film showed efficient broad-spectrum antibacterial performance as well as significant resistance of bacterial adhesion of more than a 99.9% drop for the selected bacteria. Moreover, almost no influence on cell viability of L929 enhanced the biocompatibility of film. Therefore, the modified PU films with admirable protein absorption resistance, antimicrobial performance, and biocompatibility would have promising applications in biomedical aspect.

Enhanced reverse saturable absorption of electrostatic self-assembled layer by layer films containing (8-quinolineoxy-5-sulfonic acid)phthalocyanine cobalt and graphene oxide

RSC Advances ◽  
2015 ◽  
Vol 5 (68) ◽  
pp. 55150-55157 ◽  
Author(s):  
Bowen Chen ◽  
Chunying He ◽  
Weina Song ◽  
Cheng Zhao ◽  
Yachen Gao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Sulfonic Acid ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Layer By Layer ◽  
Input Intensity ◽  
Self Assembled ◽  
Self Assembled Layer

The 25-bilayer CoPc/GO film was fabricated through electrostatic self-assembled layer by layer (LBL) technique, and it exhibits strong reverse saturable absorption (RSA) effect with the input intensity of 1.16 μJ.

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