scholarly journals Synthesis and Properties of Soap Types of Double-Chain Cleavable Surfactants Derived from Pyruvate

2004 ◽  
Vol 53 (2) ◽  
pp. 89-95 ◽  
Author(s):  
Daisuke ONO ◽  
Shingo YAMAMURA ◽  
Masaki NAKAMURA ◽  
Tokuji TAKEDA
Keyword(s):  
Double Chain ◽  
Cleavable Surfactants

Second generation double-chain cleavable surfactants

1993 ◽  
Vol 34 (44) ◽  
pp. 6985-6988 ◽  
Author(s):  
David A. Jaeger ◽  
Sarah G.G. Russell
Keyword(s):  
Second Generation ◽  
Double Chain ◽  
Cleavable Surfactants

ChemInform Abstract: Second Generation Double-Chain Cleavable Surfactants.

ChemInform ◽  
2010 ◽  
Vol 25 (4) ◽  
pp. no-no
Author(s):  
D. A. JAEGER ◽  
S. G. G. RUSSELL
Keyword(s):  
Second Generation ◽  
Double Chain ◽  
Cleavable Surfactants

Slow Magnetization Relaxation in a 1-D Double-Chain Coordination Polymer Composed of {DyIII 4} Repeating Units

2013 ◽  
Vol 3 (2) ◽  
pp. 161-171 ◽  
Author(s):  
Dimitris Alexandropoulos ◽  
Chaoran Li ◽  
Catherine Raptopoulou ◽  
Vassilis Psycharis ◽  
Wolfgang Wernsdorfer ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Double Chain ◽  
Magnetization Relaxation

scholarly journals Double-Chain Cationic Surfactants: Swelling, Structure, Phase Transitions and Additive Effects

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3946
Author(s):  
Rui A. Gonçalves ◽  
Yeng-Ming Lam ◽  
Björn Lindman
Keyword(s):  
Phase Transitions ◽  
Phase Behaviour ◽  
Double Chain ◽  
Scanning Calorimetry ◽  
Alkyl Chains ◽  
X Ray Scattering ◽  
Amphiphilic Compounds ◽  
Liquid Phases ◽  
Lamellar Phases ◽  
Water Layers

Double-chain amphiphilic compounds, including surfactants and lipids, have broad significance in applications like personal care and biology. A study on the phase structures and their transitions focusing on dioctadecyldimethylammonium chloride (DODAC), used inter alia in hair conditioners, is presented. The phase behaviour is dominated by two bilayer lamellar phases, Lβ and Lα, with “solid” and “melted” alkyl chains, respectively. In particular, the study is focused on the effect of additives of different polarity on the phase transitions and structures. The main techniques used for investigation were differential scanning calorimetry (DSC) and small- and wide-angle X-ray scattering (SAXS and WAXS). From the WAXS reflections, the distance between the alkyl chains in the bilayers was obtained, and from SAXS, the thicknesses of the surfactant and water layers. The Lα phase was found to have a bilayer structure, generally found for most surfactants; a Lβ phase made up of bilayers with considerable chain tilting and interdigitation was also identified. Depending mainly on the polarity of the additives, their effects on the phase stabilities and structure vary. Compounds like urea have no significant effect, while fatty acids and fatty alcohols have significant effects, but which are quite different depending on the nonpolar part. In most cases, Lβ and Lα phases exist over wide composition ranges; certain additives induce transitions to other phases, which include cubic, reversed hexagonal liquid crystals and bicontinuous liquid phases. For a system containing additives, which induce a significant lowering of the Lβ–Lα transition, we identified the possibility of a triggered phase transition via dilution with water.

Programming cell communications with pH-responsive DNA nanodevices

2021 ◽  
Author(s):  
Junjun Hou ◽  
Shitai Zhu ◽  
Ziwei Zhao ◽  
Jianlei Shen ◽  
Jie Chao ◽  
...  
Keyword(s):  
Cell Surface ◽  
Chain Structure ◽  
Ph Responsive ◽  
Double Chain ◽  
Physiological Conditions

The DNA nanoswitchs on cell surface could respond to the changes of pH under physiological conditions by switching from a three-chain structure to a double-chain structure, thus connecting another set...

scholarly journals Double Chain Blockchain Based on Improved Virginia Algorithm

2021 ◽  
Vol 1820 (1) ◽  
pp. 012158
Author(s):  
Yibo Cao ◽  
Yuyang Cheng ◽  
Chunyu Yang ◽  
Anqi Zhan ◽  
Chuxiao Xu
Keyword(s):  
Double Chain
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