Interaction of DNA with Cationic Gemini Surfactant Trimethylene-1,3-bis (dodecyldimethyl-ammonium bromide) and Anionic Surfactant SDS Mixed System

2008 ◽  
Vol 16 (6) ◽  
pp. 923-928 ◽  
Author(s):  
Xiaofang ZHAO ◽  
Yazhuo SHANG ◽  
Honglai LIU ◽  
Ying HU ◽  
Jianwen JIANG
Keyword(s):  
Anionic Surfactant ◽  
Gemini Surfactant ◽  
Mixed System ◽  
Ammonium Bromide ◽  
Cationic Gemini Surfactant

Decompaction of Cationic Gemini Surfactant-Induced DNA Condensates by β-Cyclodextrin or Anionic Surfactant

2008 ◽  
Vol 112 (43) ◽  
pp. 13648-13654 ◽  
Author(s):  
Meiwen Cao ◽  
Manli Deng ◽  
Xiao-Ling Wang ◽  
Yilin Wang
Keyword(s):  
Anionic Surfactant ◽  
Gemini Surfactant ◽  
Cationic Gemini Surfactant

scholarly journals A Fluorescence Study on Surface Properties of Cationic Gemini Surfactant with Some Special Alcohols

2020 ◽  
Vol 10 (2) ◽  
pp. 126-130
Author(s):  
Riyaj Mohammad
Keyword(s):  
Surface Properties ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Aggregation Number ◽  
Fluorescence Emission ◽  
Mixed System ◽  
Fluorescence Emission Spectrum ◽  
Cationic Gemini Surfactant ◽  
Pyrene Fluorescence ◽  
Coating Agents

Alcohols are very important additives and played a measure role as co-surfactants in various industrial and research applications. While, Gemini surfactants are mainly used as effective emulsifiers, antifoaming agents, bactericidal agents, coating agents and corrosion inhibitors etc.  Therefore, it is important to study about the variations in alkanol concentrations which affects the aggregation number and other related parameters. Surface properties of gemini surfactant butanediyl-1,4-bis(dimethyldodecylammonium bromide) (12-4-12) has been studied by using fluorescence method. This method has been used to calculate the aggregation number (Nagg) and the other related parameters like dielectric constant (D), Stern Volmer binding constant (KSV) of mixed system. This method is also very important for the calculation of the micropolarity of the mixed system (gemini/alcohol). The micropolarity has been obtained with the help of the ratio of intensity of peaks (I1/I3) of the pyrene fluorescence emission spectrum. Cetylpridinium chloride and pyrene were used as quencher and probe, respectively. Keywords: Gemini surfactant, special alcohols, aggregation number, micropolarity

Ionic Synergistic Inhibition between the Cationic Gemini Surfactant and Anionic Surfactant for Steel Corrosion in 1M Hydrochloric Acid

2011 ◽  
Vol 396-398 ◽  
pp. 2406-2410
Author(s):  
Zhi Chen ◽  
Huan Fang Gao ◽  
Yao Qiong Wang
Keyword(s):  
Carbon Steel ◽  
Anionic Surfactant ◽  
Acidic Medium ◽  
Gemini Surfactant ◽  
Sodium Dodecyl ◽  
Steel Corrosion ◽  
Adsorption Model ◽  
Cationic Gemini Surfactant ◽  
Carbon Steel Surface ◽  
Inhibitor System

The inhibitive synergistic effect between a cationic gemini surfactant, 1,2-ethane-bis(dimethyl dodecylammonium bromide) (designed as 12-2-12), and anionic surfactant, sodium dodecyl sulfonate (SDS) for the corrosion inhibition of A3 carbon steel in 1 mol L-1 HCl was investigated by weight loss. The inhibition system composed by 12-2-12 and SDS is efficient. The adsorption mechanism of the 12-2-12 and SDS on steel in acidic medium is discussed on the basis of experimental data and an adsorption model is proposed. Adsorption of inhibitor system on the A3 carbon steel surface in acidic medium obeys Langmuir’s adsorption isotherm.

scholarly journals Comparative effect of cationic gemini surfactant and its monomeric counterpart on the conformational stability and activity of lysozyme

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16763-16776 ◽  
Author(s):  
Taruna Sharma ◽  
Neeraj Dohare ◽  
Meena Kumari ◽  
Upendra Kumar Singh ◽  
Abbul Bashar Khan ◽  
...  
Keyword(s):  
Protein Interactions ◽  
Gemini Surfactant ◽  
Conformational Stability ◽  
Comparative Effect ◽  
Physiochemical Properties ◽  
Cationic Gemini Surfactant ◽  
P Protein

Protein interactions with surfactants are dependent on their physiochemical properties.

Facile synthesis of gemini surface-active ATRP initiator and its use in soap-free AGET ATRP mini-emulsion polymerisation

2013 ◽  
Vol 67 (3) ◽  
Author(s):  
Chuan Cheng ◽  
Quan Fu ◽  
Xiong Bai ◽  
Shao Liu ◽  
Liang Shen ◽  
...  
Keyword(s):  
Gemini Surfactant ◽  
Reaction Kinetic ◽  
Total Yield ◽  
Kinetic Studies ◽  
Facile Synthesis ◽  
Aget Atrp ◽  
Cationic Gemini Surfactant ◽  
Emulsion Polymerisation ◽  
Radical Polymerisation ◽  
Surface Active

AbstractA novel cationic gemini surfactant has been readily synthesised in 70 % total yield. The functional gemini surfactant can act both as an emulsifier and an atom transfer radical polymerisation (ATRP) initiator in mini-emulsion polymerisation of methyl methacrylate (MMA), in which no other emulsifier was required. 1-(Dimethylamino)dodecane (N,N-dimethyldodecylamine, DMDA) was found to be a good ligand in the activator generated by electron transfer (AGET) ATRP reaction. Kinetic studies indicated that the polymerisation featured controlled/living radical polymerisation.

Decondensation of cationic gemini surfactant-induced DNA aggregates using triblock copolymer (PEO)20–(PPO)70–(PEO)20

2013 ◽  
Vol 291 (9) ◽  
pp. 2139-2146 ◽  
Author(s):  
Yunfei He ◽  
Shouhong Xu ◽  
Di Sun ◽  
Yazhuo Shang ◽  
Xiaofang Zhao ◽  
...  
Keyword(s):  
Triblock Copolymer ◽  
Gemini Surfactant ◽  
Cationic Gemini Surfactant

Phase Behavior and Polymerization of the Ternary Polymerizable Cationic Gemini Surfactant/Fatty Alcohol/Water System

Langmuir ◽  
2020 ◽  
Vol 36 (4) ◽  
pp. 986-990 ◽  
Author(s):  
Masaaki Akamatsu ◽  
Kosuke Ogura ◽  
Koji Tsuchiya ◽  
Kenichi Sakai ◽  
Masahiko Abe ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Fatty Alcohol ◽  
Gemini Surfactant ◽  
Water System ◽  
Cationic Gemini Surfactant ◽  
Alcohol Water

Surface Activity Research of Cationic Gemini Surfactants

2013 ◽  
Vol 690-693 ◽  
pp. 2076-2080
Author(s):  
Zhen Zhong Fan ◽  
Lan Lan Li ◽  
Li Feng Zhang ◽  
Qing Wang Liu
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Surfactant Concentration ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Ph Value ◽  
Inorganic Salts ◽  
Cationic Gemini Surfactant ◽  
Cationic Gemini Surfactants

Cationic Gemini surfactant concentration, the inorganic salts added and the pH value of surface tension obtained cationic gemini surfactant critical micelle concentration is 0.4mmol / L;by adding three kinds of inorganic salts NaCl, MgCl2, and Na2SO4 ,which Na2SO4 has the greatest impact on surface tension, followed by MgCl2.The surface minimum tension of the pH ranged from 9 to 11 , indicating that the surface activity of cationic gemini surfactants achieved the highest.

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