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Understanding how the structures of surfactants in hybrid nanoparticles affect the compaction of ct-DNA for cellular uptake: presenting a highly efficient surfactant.
Soft Matter
December 2024
Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India.
Compaction of calf thymus DNA (ct-DNA) by two single-head-double-tailed surfactants with variable tail lengths , Dihexadecyldimethylammonium bromide (DDAB16) and Dioctadecyldimethylammonium bromide (DDAB18), and one triple-head-double-tailed surfactant -dodecyl--(2-(dodecyldimethylammonio)ethyl)-,,,-tetramethylethane-1,2-diaminium (MQAS12) has been studied. DDAB18 is found to be the most efficient, while MQAS12 is the least efficient for cellular uptake. Hybrid materials of surfactants and silica nanoparticles have better compaction efficiency due to the cooperative binding.
View Article and Find Full Text PDFToroidal micelles formed in viscoelastic aqueous solutions of a double-tailed surfactant with two quaternary ammonium head groups.
Soft Matter
January 2024
The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.
Article Synopsis
Hybrid Fluorocarbon-Hydrocarbon Surfactants: Synthesis and Colloidal Characterization.
J Org Chem
November 2021
Institut des Biomolécules Max Mousseron (IBMM)─UMR5247, 34093 Montpellier, France.
Four double-tailed hybrid fluorocarbon-hydrocarbon (F-H) surfactants with a poly(ethylene glycol) (PEG) polar headgroup were synthesized. The hydrophobic scaffold consists of an amino acid core, onto which were grafted both fluorocarbon and hydrocarbon chains of different lengths. The PEG polar head was connected to the hydrophobic scaffold through a copper(I)-mediated click reaction.
View Article and Find Full Text PDFRemoval of disinfection by-product precursors in drinking water treatment processes: Is fluorescence parallel factor analysis a promising indicator?
J Hazard Mater
September 2021
Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:
This work investigated the removal efficiency of disinfection by-product (DBP) precursors by different drinking water treatment processes and evaluated the feasibility of using fluorescence components removal as an indicator. A four-component (including tryptophan-like, protein-bound, tyrosine-like, and humic-like components) parallel factor analysis model was developed basing on 288 fluorescence excitation-emission matrices. Among all treatment processes, coagulation-sedimentation process showed the best performance, with mean removal ratios of 30% in total fluorescence intensity and 31% in total formation potential (FP) of DBPs, respectively.
View Article and Find Full Text PDFAggregation and pH Responsive Behavior of Thioester Surfactants and Formation of Disulfide Linkages in Aqueous Solutions.
J Oleo Sci
February 2018
School of Chemistry, College of Science and Engineering, Kanazawa University.
pH responsive surfactants, [CHN(CH)(CH)SCOCH]Br (CnSAc, n = 4, 11, 12), were prepared, and their properties in aqueous solution were examined. The critical micelle concentration (cmc) and critical vesicle concentration (cvc) were determined based on changes in conductivity, as well as by fluorescence measurements, and light scattering methods. A significant increase in the light scattering intensities of the CnSAc (n=11, 12) systems suggested that the growth of aggregates was accompanied by considerable counterion binding with increasing surfactant concentration.
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