Superhydrophobic hybrid films prepared from silica nanoparticles and ionic liquids via layer-by-layer self-assembly

2014 ◽  
Vol 570 ◽  
pp. 27-32 ◽  
Author(s):  
Chenyun Zhang ◽  
Shengnan Zhang ◽  
Picheng Gao ◽  
Hongmin Ma ◽  
Qin Wei
Keyword(s):  
Ionic Liquids ◽  
Silica Nanoparticles ◽  
Self Assembly ◽  
Layer By Layer ◽  
Hybrid Films

Cell labeling efficiency of layer-by-layer self-assembly modified silica nanoparticles

2009 ◽  
Vol 24 (4) ◽  
pp. 1317-1321 ◽  
Author(s):  
Gang Liu ◽  
Jing Tian ◽  
Chen Liu ◽  
Hua Ai ◽  
Zhongwei Gu ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Self Assembly ◽  
Laser Scanning ◽  
Control Cell ◽  
Silica Nanoparticle ◽  
Laser Scanning Microscopy ◽  
Cell Labeling ◽  
Cell Uptake ◽  
Confocal Laser ◽  
Layer By Layer

In the present study, we compared cytotoxicity and cell uptake of silica nanoparticles with four different surface coatings generated through layer-by-layer self-assembly. Rabbit mesenchymal stem cells (rMSCs) were labeled with silica nanoparticles of different coatings including poly(ethyleneimine) (PEI), poly(allylamine hydrochloride) (PAH), poly(anetholesulfonic acid, sodium salt) (PAS), and dextran sulfate. The MTT [3-(4, 5-dimethylthiazol-2)-2, 5-diphenyl-2H-tetrazolium bromide] test was performed to quantify the cell biocompatibility. The cellular uptake of those silica nanoparticles was determined by flow cytometry and confocal laser scanning microscopy. The results showed that all examined silica nanoparticles were stable in aqueous phase with high monodispersity. Labeled rMSCs are unaffected in their viability, apoptosis, and differentiation capacities. The silica nanoparticle-coated synthetic polycations such as PEI or PAH have higher cell internalization than negatively charged polyelectrolytes. The ability to control cell uptake of different particles may have applications in cell labeling, cell separation, and other biomedical applications.

Multilayer Hybrid Films of Titania Semiconductor Nanosheet and Silver Metal Fabricated via Layer-by-Layer Self-Assembly and Subsequent UV Irradiation

2006 ◽  
Vol 18 (5) ◽  
pp. 1235-1239 ◽  
Author(s):  
Yong Zhou ◽  
Renzhi Ma ◽  
Yasuo Ebina ◽  
Kazunori Takada ◽  
Takayoshi Sasaki
Keyword(s):  
Uv Irradiation ◽  
Self Assembly ◽  
Layer By Layer ◽  
Hybrid Films ◽  
Silver Metal

Nanostructured and Electroactive Hybrid Films Containing Microcrystalline Cellulose Modified with the Phosphate Group: Synthesis and Characterization

2016 ◽  
Vol 869 ◽  
pp. 840-845
Author(s):  
Paulo Ronaldo Sousa Teixeira ◽  
Ana Siqueira do Nascimento Marreiro ◽  
José Regilmar Teixeira da Silva ◽  
Emanuel Airton de Oliveira Farias ◽  
Natália de Araujo Dionisio ◽  
...  
Keyword(s):  
Microcrystalline Cellulose ◽  
Self Assembly ◽  
Phosphate Group ◽  
Synthesis And Characterization ◽  
Layer By Layer ◽  
Preparation Process ◽  
Hybrid Films ◽  
Assembly Technique ◽  
Phosphate Groups ◽  
Modified Cellulose

Nanostructured and electroactive hybrid films containing Microcrystalline Cellulose (MC) modified with the phosphate group (MCPO4) and polyaniline (PANI) were prepared using the Layer-by-Layer (LbL) self-assembly technique. In the preparation process of the films cellulose was dispersed in the solution of PANI and the film with PVS/PANI(MCPO4) structure was immobilized on ITO substrate. In order to investigate the influence of the phosphate group on the electrochemical behavior of the film, films were also prepared replacing the modified cellulose (MCPO4) by unmodified cellulose (MC), forming the PVS/PANI(MC) films. Subsequently, all films were characterized by cyclic voltammetry (CV), and the results showed the redox processes characteristic of PANI, but the presence of CMPO4 promotes an increase in the values of current density observed for the PVS/PANI(MCPO4) film when compared to the PVS/PANI(MC) film. This is probably due to a self-doping process of the polymer in the presence of phosphate groups.

Optical thin film filters of colloidal gold and silica nanoparticles prepared by a layer-by-layer self-assembly method

2011 ◽  
Vol 46 (21) ◽  
pp. 6877-6882 ◽  
Author(s):  
Zaheer Abbas Khan ◽  
Rachana Kumar ◽  
Waleed S. Mohammed ◽  
Gabor L. Hornyak ◽  
Joydeep Dutta
Keyword(s):  
Thin Film ◽  
Silica Nanoparticles ◽  
Self Assembly ◽  
Colloidal Gold ◽  
Layer By Layer ◽  
Optical Thin Film ◽  
Assembly Method ◽  
Thin Film Filters

Preparation of multi-shell structured fluorescent composite nanoparticles for ultrasensitive human procalcitonin detection

RSC Advances ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 5988-5995 ◽  
Author(s):  
Yue Zhao ◽  
Changhua Zhou ◽  
Ruili Wu ◽  
Lin Li ◽  
Huaibin Shen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Silica Nanoparticles ◽  
Self Assembly ◽  
Composite Nanoparticles ◽  
Layer By Layer ◽  
Protection Method ◽  
Assembly Technique

In this paper, we reported the preparation of carboxyl functionalized quantum dots (QDs)-embedded silica nanoparticles by combining layer-by-layer (LbL) self-assembly technique and a multi-layer protection method.

scholarly journals Highly Stable Surface Functionalization of Microgas Chromatography Columns Using Layer-by-Layer Self-Assembly of Silica Nanoparticles

2013 ◽  
Vol 85 (17) ◽  
pp. 8135-8141 ◽  
Author(s):  
Dong Wang ◽  
Hamza Shakeel ◽  
John Lovette ◽  
Gary W. Rice ◽  
James R. Heflin ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Surface Functionalization ◽  
Self Assembly ◽  
Layer By Layer ◽  
Stable Surface ◽  
Chromatography Columns
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