Silanization of solid surfaces via mercaptopropylsilatrane: a new approach of constructing gold colloid monolayers

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46527-46535 ◽  
Author(s):  
Wen-Hao Chen ◽  
Yen-Ta Tseng ◽  
Shuchen Hsieh ◽  
Wan-Chun Liu ◽  
Chiung-Wen Hsieh ◽  
...  
Keyword(s):  
Adhesive Layer ◽  
Solid Surfaces ◽  
Gold Colloid ◽  
New Approach ◽  
Silica Surfaces ◽  
Self Assembled

Mercaptopropylsilatrane (MPS) was investigated as a novel self-assembled film on silica surfaces and also as a novel adhesive layer for the construction of a gold colloid monolayer on silica surfaces.

scholarly journals Statistical Verification of Parameters Describing Liquid Adsorption on Heterogeneous Solid Surfaces

1999 ◽  
Vol 82 (6) ◽  
pp. 1495-1504 ◽  
Author(s):  
Przemysław Podkościelny ◽  
Andrzej Dąbrowski
Keyword(s):  
Distribution Function ◽  
Solid Surfaces ◽  
Surface Phase ◽  
Adsorption Model ◽  
Exponential Equation ◽  
New Approach ◽  
Liquid Adsorption ◽  
Experimental Systems ◽  
Statistical Verification ◽  
Heterogeneous Solid

Abstract A new approach is presented for determining the surface phase capacity and the distribution function in liquid adsorption on heterogeneous solid surfaces. This approach deals with statistical analysis of the errors made by applying the so-called exponential equation of the adsorption isotherm. It is proved that such an analysis, which is suitable for all types of excess experimental isotherms, gives the answer to the dilemma of the reliability of the results obtained by means of the assumed adsorption model. Several experimental systems were analyzed to demonstrate the advantage of our approach.

On-demand drug delivery from self-assembled nanofibrous gels: A new approach for treatment of proteolytic disease

2011 ◽  
Vol 97A (2) ◽  
pp. 103-110 ◽  
Author(s):  
Praveen Kumar Vemula ◽  
Eric Boilard ◽  
Abdullah Syed ◽  
Nathaniel R. Campbell ◽  
Melaku Muluneh ◽  
...  
Keyword(s):  
Drug Delivery ◽  
New Approach ◽  
On Demand ◽  
Self Assembled

CATIONIC SELF-ASSEMBLED MONOLAYERS COMPOSED OF GEMINI-STRUCTURED SULFUR COMPOUNDS ON GOLD: A NEW APPROACH TO CONTROL IONIC FUNCTIONS ON SURFACES

2003 ◽  
Vol 407 (1) ◽  
pp. 115-120 ◽  
Author(s):  
Shinobu Yokokawa ◽  
Masahiko Hara ◽  
Shinobu Yokokawa ◽  
Kaoru Tamada ◽  
Eisuke Ito ◽  
...  
Keyword(s):  
Sulfur Compounds ◽  
Self Assembled Monolayers ◽  
New Approach ◽  
Assembled Monolayers ◽  
Self Assembled

Thermal stability of self-assembled octadecyltrichlorosilane monolayers on planar and curved silica surfaces

2006 ◽  
Vol 496 (2) ◽  
pp. 420-425 ◽  
Author(s):  
Sneha A. Kulkarni ◽  
S.A. Mirji ◽  
A.B. Mandale ◽  
Kunjukrishna P. Vijayamohanan
Keyword(s):  
Thermal Stability ◽  
Silica Surfaces ◽  
Self Assembled ◽  
Thermal Stability Of

scholarly journals Rifampicin-loaded silicone: a new approach to tuning release rate with self assembled monolayers and cast molding

2006 ◽  
Vol 3 (S1) ◽  
Author(s):  
Xuemei Liang ◽  
Anfeng Wang ◽  
Haiying Tang ◽  
Ting Cao ◽  
James P McAllister ◽  
...  
Keyword(s):  
Release Rate ◽  
Self Assembled Monolayers ◽  
New Approach ◽  
Assembled Monolayers ◽  
Self Assembled

Formation of Gold Nanoparticles Film on Silicon Wafer by Self-Assembled Method

2013 ◽  
Vol 795 ◽  
pp. 726-731 ◽  
Author(s):  
Khatijah A. Yaacob ◽  
Gooi Wyn Gyn
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Surface Morphology ◽  
Silicon Wafer ◽  
Sodium Citrate ◽  
Chemical Reduction ◽  
Wafer Surface ◽  
Gold Colloid ◽  
Gold Colloids ◽  
Self Assembled

The gold nanoparticles film has been successfully formed on the silicon wafer by self-assembled method. The gold colliods were prepared by chemical reduction method where sodium citrate (act as the reducing, capping and stabilizing agent) were added into the boiling 50ml of 0.01% tetrachloroauria acid (HAuCl4) solution in reflux system. Different particle size of gold colloids (AuNPs_1 and AuNPs_2) were produced by altering the amount of sodium citrate. The as-prepared gold colloids were characterized by UV - Vis spectrometry, Malvern particle size analyzer, zeta potential and XRD. Self-assembled method of Au nanoparticles were first start with the cleaning of silicon wafers using standard RCA cleaning, and followed by the piranha treatment to producing an OH-terminated surface. Then, the wafers were functionalized with organosilane molecule by immersing the silicon wafer in 10mM of surfactant in methanolic solution to produce self-assemble monolayers (SAMs) on silicon wafer surface. These layers were used to immobilize the gold nanoparticles from as-prepared gold colloid and result of the gold nanoparticles film on silicon wafer. Effect of surfactant ((3-aminopropyl) trimethoxysilane (APTMS) and (3-mercaptopropyl) trimethoxysilane (MPTMS)), effect of particle size of gold colloid (AuNPs_1 and AuNPs_2) and the effect of deposition time (0.5, 1.0, 1.5 and 2 hours) to the surface morphology such as surface coverage, inter-particle distance were studied in this work. The surface morphology of gold nanoparticles films were characterized by FESEM and AFM.

scholarly journals VELCRO-INSPIRED SUPRAMOLECULAR SYSTEM FOR SILICA–RUBBER COUPLING

2020 ◽  
Vol 93 (4) ◽  
pp. 672-682
Author(s):  
Rafal Anyszka ◽  
Karolina Beton ◽  
Maja Szczechowicz ◽  
Dariusz M. Bielinski ◽  
Anke Blume
Keyword(s):  
Silica Surface ◽  
Rubber Matrix ◽  
Supramolecular System ◽  
New Approach ◽  
Silica Surfaces ◽  
Covering System ◽  
Coupling System ◽  
Chemical Coupling ◽  
Common Coupling ◽  
Reference Samples

ABSTRACT The state-of-the-art silica–rubber coupling is based on forming chemical links between a silica surface and rubber macromolecules. However, the chemical links are relatively short and stiff, thus in case of a chemical breakage they are highly unlikely to recombine. This could result in a potential deterioration of the interphase properties over time. To overcome this drawback, a new approach to silica–rubber coupling was investigated in the current study. The new approach is inspired by the Velcro hook-and-loop system from nature that facilitates a re-connectability, thus re-formation of the interphase properties in case of a breakage. For this, various long oligomeric brushes were grafted onto silica surfaces considered to act as supramolecular hooks. Such modified silica were dispersed in rubber and vulcanized. The resulting cross-linked rubber matrix is considered to act as supramolecular loops. The prepared vulcanizates were compared with reference samples containing common coupling or covering agents. The reinforcing potential provided by the newly developed system is lower than the chemical coupling system but considerably higher than the covering system. The new system also provides better mechanical properties, recovery after cycling stretching, and heat treatment than the references. A new reinforcing mechanism is proposed for the silica grafted with oligomeric brushes that exhibits a good chemical compatibility to the rubber matrix.

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