Facile, shear-induced, rapid formation of stable gels of chitosan through in situ generation of colloidal metal salts

2018 ◽  
Vol 54 (82) ◽  
pp. 11582-11585 ◽  
Author(s):  
Kartik Ravishankar ◽  
Hemalatha Kanniyappan ◽  
K. M. Shelly ◽  
Vignesh Muthuvijayan ◽  
Raghavachari Dhamodharan
Keyword(s):  
Metal Ions ◽  
Metal Salts ◽  
Rapid Formation ◽  
Novel Method ◽  
In Situ Generation ◽  
Colloidal Metal

A novel method of preparing chitosan gels using in situ generated negatively-charged colloidal salts of a variety of metal ions is described.

A Novel Method for the In situ Generation of Alkoxydialkylboranes and Their Use in the Selective Preparation of 1,3-synDiols

1987 ◽  
Vol 16 (10) ◽  
pp. 1923-1926 ◽  
Author(s):  
Kau-Ming Chen ◽  
Karl G. Gunderson ◽  
Goetz E. Hardtmann ◽  
Kapa Prasad ◽  
Oljan Repic ◽  
...  
Keyword(s):  
Novel Method ◽  
In Situ Generation

ChemInform Abstract: A Novel Method for the In Situ Generation of Alkoxydialkylboranes and Their Use in the Selective Preparation of 1,3-Syn Diols.

ChemInform ◽  
1988 ◽  
Vol 19 (16) ◽  
Author(s):  
K.-M. CHEN ◽  
K. G. GUNDERSON ◽  
G. E. HARDTMANN ◽  
K. PRASAD ◽  
O. REPIC ◽  
...  
Keyword(s):  
Novel Method ◽  
In Situ Generation

Syntheses and Characterisation of Gd3Al5O12 and La3Al5O12 Garnets

2007 ◽  
Vol 72 (3) ◽  
pp. 321-333 ◽  
Author(s):  
Edita Garskaite ◽  
Natalija Dubnikova ◽  
Arturas Katelnikovas ◽  
Jiří Pinkas ◽  
Aivaras Kareiva
Keyword(s):  
Phase Composition ◽  
Ir Spectroscopy ◽  
Metal Ions ◽  
Sol Gel ◽  
Aqueous Media ◽  
Experimental Conditions ◽  
Lanthanide Ion ◽  
In Situ Generation ◽  
Xrd Patterns

A sol-gel method based on in situ generation of mixed-metal chelates by complexing metal ions with ethane-1,2-diol in aqueous media has been elaborated to prepare lanthanide-ion containing garnets, Gd3Al5O12 (GAG) and La3Al5O12 (LAG). XRD patterns of the powders sintered at 1 000 °C revealed the formation of monophasic GAG. However, LAG does not form under the same experimental conditions. The phase composition of the samples was characterised by IR spectroscopy. Microstructural features of the polycrystalline garnets were studied by SEM.

A Novel Method of Synthesis of Nanostructured Aluminum Nitride Through Sol-Gel Route by In Situ Generation of Nitrogen

2013 ◽  
Vol 96 (2) ◽  
pp. 385-390 ◽  
Author(s):  
M. Ghosh Chaudhuri ◽  
J. Basu ◽  
G. C. Das ◽  
S. Mukherjee ◽  
M. K. Mitra
Keyword(s):  
Aluminum Nitride ◽  
Sol Gel ◽  
Novel Method ◽  
In Situ Generation

Highly diastereo- and enantioselective organocatalytic synthesis of trifluoromethylated erythritols based on the in situ generation of unstable trifluoroacetaldehyde

2021 ◽  
Author(s):  
Kazumasa Funabiki ◽  
Toshiya Gotoh ◽  
Ryunosuke Kani ◽  
Toshiyasu Inuzuka ◽  
Yasuhiro Kubota
Keyword(s):  
Trifluoromethyl Group ◽  
In Situ Generation

A highly diastereo- and enantioselective organocatalytic method to synthesise erythritols bearing a trifluoromethyl group has been investigated.

Recent advances in Minisci-type reactions and applications in organic synthesis

2020 ◽  
Vol 24 ◽  
Author(s):  
Wengui Wang ◽  
Shoufeng Wang
Keyword(s):  
Free Radical ◽  
Hydrogen Atom ◽  
Organic Synthesis ◽  
Radical Reactivity ◽  
Atom Loss ◽  
Radical Generation ◽  
In Situ Generation ◽  
Thermal Cleavage ◽  
Synthetic Chemist

Abstract:: Minisci-type reactions have become widely known as reactions that involve the addition of carbon-centered radicals to basic heteroarenes followed by formal hydrogen atom loss. While the originally developed protocols for radical generation remain in active use today, in recent years by a new array of radical generation strategies allow use of a wider variety of radical precursors that often operate under milder and more benign conditions. New transformations based on free radical reactivity are now available to a synthetic chemist looking to utilize a Minisci-type reaction. Radical-generation methods based on photoredox catalysis and electrochemistry, which utilize thermal cleavage or the in situ generation of reactive radical precursors, have become popular approaches. Our review will cover the remarkably literature that has appeared on this topic in recent 5 years, from 2015-01 to 2020-01, in an attempt to provide guidance to the synthetic chemist, on both the challenges that have been overcome and applications in organic synthesis.

scholarly journals A residue-free approach to water disinfection using catalytic in situ generation of reactive oxygen species

2021 ◽  
Author(s):  
Thomas Richards ◽  
Jonathan H. Harrhy ◽  
Richard J. Lewis ◽  
Alexander G. R. Howe ◽  
Grzegorz M. Suldecki ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Water Disinfection ◽  
Oxygen Species ◽  
In Situ Generation

In Situ Generation of Unstable Difluoromethylphosphonate-Containing Diazoalkanes and Their Use in [3 + 2] Cycloaddition Reactions with Vinyl Sulfones

2021 ◽  
Vol 23 (3) ◽  
pp. 1130-1134
Author(s):  
Haibo Mei ◽  
Li Wang ◽  
Romana Pajkert ◽  
Qian Wang ◽  
Jingcheng Xu ◽  
...  
Keyword(s):  
Cycloaddition Reactions ◽  
In Situ Generation

Experimental Investigation of Laser Sintering of Conductive Adhesive for Functional Prototypes Produced by Embedding Stereolithography

2014 ◽  
Vol 1038 ◽  
pp. 75-81
Author(s):  
Bernd Niese ◽  
Philipp Amend ◽  
Uwe Urmoneit ◽  
Stephan Roth ◽  
Michael Schmidt
Keyword(s):  
Thermal Damage ◽  
Laser Sintering ◽  
Conductive Adhesive ◽  
Flexible Production ◽  
Sintering Process ◽  
Building Process ◽  
In Situ Generation ◽  
Functional Components

Embedding stereolithography (eSLA) is an additive, hybrid process, which provides a flexible production of 3D components and the ability to integrate electrical and optical conductive structures and functional components within parts. However, the embedding of conductive circuits in stereolithography (SLA) parts assumes usage of process technologies, which enables their direct integration of conductive circuits during the layer-wise building process. In this context, a promising method for in-situ generation of conductive circuits is dispensing of conductive adhesive on the current surface of the SLA part and its subsequent sintering. In this paper, the laser sintering (λ = 355 nm) of conductive adhesive mainly consisting of silver nanoparticles is investigated. The work intends to evaluate the curing behavior of the conductive adhesive, the beam-matter-interactions and the thermal damage of the SLA substrate. The investigations revealed a fast and flexible laser sintering process for the generation of conductive circuits with sufficient electrical conductivity and sufficient current capacity load. In this context, a characterization of the conductive structures is done by measuring their electrical resistance and their potential current capacity load.

Sign in / Sign up

Export Citation Format

Share Document