Chemical Modification of Silica Surface by Immobilization of Amino Groups for Synthesis of Silver Nanoparticles

2009 ◽  
pp. 283-287 ◽  
Author(s):  
K. Katok ◽  
Y. Bol'bukh ◽  
V. Tertykh
Keyword(s):  
Silver Nanoparticles ◽  
Chemical Modification ◽  
Silica Surface ◽  
Amino Groups

Chemical Modification of Surfaces and the Kinetics of Oxidation of Aqueous Salts of Silver Nanoparticles

2021 ◽  
Vol 95 (1) ◽  
pp. 177-182
Author(s):  
A. Yu. Olenin ◽  
A. S. Korotkov ◽  
V. V. Yagov ◽  
G. V. Lisichkin
Keyword(s):  
Silver Nanoparticles ◽  
Chemical Modification ◽  
Kinetics Of Oxidation ◽  
Kinetics Of

scholarly journals Chemical modification of the adeno-associated virus capsid to improve gene delivery

2020 ◽  
Vol 11 (4) ◽  
pp. 1122-1131 ◽  
Author(s):  
Mathieu Mével ◽  
Mohammed Bouzelha ◽  
Aurélien Leray ◽  
Simon Pacouret ◽  
Mickael Guilbaud ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Chemical Modification ◽  
Neutralizing Antibodies ◽  
Cell Tropism ◽  
Amino Groups ◽  
Chemical Modifications ◽  
Virus Capsid ◽  
Adeno Associated Virus

Bioconjugated AAV vectors, achieved by coupling of ligands on amino groups of the capsid, are of great interest for gene delivery. Chemical modifications can be used to enhance cell tropism and to decrease interactions with neutralizing antibodies.

scholarly journals Femtosecond laser fabrication of silver nanostructures on glass for surface enhanced Raman spectroscopy

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Mark MacKenzie ◽  
Haonan Chi ◽  
Manoj Varma ◽  
Parama Pal ◽  
Ajoy Kar ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Silica Surface ◽  
Microfluidic Channel ◽  
Surface Enhance Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Fused Silica ◽  
Microfluidic Channels ◽  
Silver Nanostructures ◽  
Sem Images

AbstractWe report on an optimized fabrication protocol for obtaining silver nanoparticles on fused silica substrates via laser photoreduction of a silver salt solution. We find that multiple scans of the laser over the surface leads to a more uniform coverage of densely packed silver nanoparticles of approximately 50 nm diameter on the fused silica surface. Our substrates yield Raman enhancement factors of the order of 1011 of the signal detected from crystal violet. We use a theoretical model based on scanning electron microscope (SEM) images of our substrates to explain our experimental results. We also demonstrate how our technique can be extended to embedding silver nanoparticles in buried microfluidic channels in glass. The in situ laser inscription of silver nanoparticles on a laser machined, sub-surface, microfluidic channel wall within bulk glass paves the way for developing 3D, monolithic, fused silica surface enhance Raman spectroscopy (SERS) microfluidic sensing devices.

scholarly journals Chemical modification of amino groups in alanine dehydrogenase from Bacillus natto KMD 1126.

1981 ◽  
Vol 29 (2) ◽  
pp. 485-489 ◽  
Author(s):  
KATSUHIKO MATSUI ◽  
KIYOMI FUKUDA ◽  
YUKIO KAMEDA
Keyword(s):  
Chemical Modification ◽  
Amino Groups ◽  
Bacillus Natto ◽  
Alanine Dehydrogenase

Chemical Modification of the Hemolytic Lectin CEL-III by Succinic Anhydride: Involvement of Amino Groups in the Oligomerization Process

1998 ◽  
Vol 62 (6) ◽  
pp. 1185-1189 ◽  
Author(s):  
Tomomitsu HATAKEYAMA ◽  
Yumiko MATSUYAMA ◽  
Takako FUNADA ◽  
Sachiko FUKUYAMA ◽  
Hiromiki KUWAHARA ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Succinic Anhydride ◽  
Amino Groups

scholarly journals Protein covalent modification of biologically active quinones

2004 ◽  
Vol 69 (11) ◽  
pp. 901-907 ◽  
Author(s):  
Dusan Sladic ◽  
Irena Novakovic ◽  
Zoran Vujcic ◽  
Tatjana Bozic ◽  
Natasa Bozic ◽  
...  
Keyword(s):  
Antitumor Activity ◽  
Chemical Modification ◽  
Covalent Modification ◽  
Biologically Active ◽  
Amino Groups ◽  
Sds Page ◽  
Protein Covalent

The avarone/avarol quinone/hydroquinone couple shows considerable antitumor activity. In this work, covalent modification of ?-lactoglobulin by avarone and its derivatives as well as by the synthetic steroidal quinone 2,5(10)-estradiene- 1,4,17-trione and its derivatives were studied. The techniques for studying chemical modification of ?-lactoglobulin by quinones were: UV/Vis spectrophotometry, SDS PAGE and isoelectrofocusing. SDS PAGE results suggest that polymerization of the protein occurs. It could be seen that the protein of 18 kD gives the bands of 20 kD, 36 kD, 40 kD, 45 kD, 64 kD and 128 kD depending on modification agent. The shift of the pI of the protein (5.4) upon modification toward lower values (from pI 5.0 to 5.3) indicated that lysine amino groups are the principal site of the reaction of ?-lactoglobulin with the quinones.

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