A5017691922- Surfactants and Colloidal Systems
- Lipid Membrane Structure and Behavior
- Antimicrobial Peptides and Activities
- Antimicrobial agents and applications
- Luminescence and Fluorescent Materials
- Pharmaceutical and Antibiotic Environmental Impacts
- Advanced biosensing and bioanalysis techniques
- Weed Control and Herbicide Applications
- Molecular Sensors and Ion Detection
- Analytical Chemistry and Chromatography
- Pesticide and Herbicide Environmental Studies
- Nanocluster Synthesis and Applications
- Surface Modification and Superhydrophobicity
- Carbon and Quantum Dots Applications
- Environmental Chemistry and Analysis
- Protein Interaction Studies and Fluorescence Analysis
- Polymer Surface Interaction Studies
- Advanced Polymer Synthesis and Characterization
- Graphene and Nanomaterials Applications
- Plant Stress Responses and Tolerance
- Lubricants and Their Additives
- Organic Light-Emitting Diodes Research
- Seed and Plant Biochemistry
- Advanced Cellulose Research Studies
- Advanced Drug Delivery Systems
Guangdong Pharmaceutical University
2018-2024
Zhongshan Hospital
2021
State Council of the People's Republic of China
2018
South China University of Technology
2017
Shenyang Agricultural University
2017
Materials Science & Engineering
2017
Beijing National Laboratory for Molecular Sciences
2010-2016
Chinese Academy of Sciences
2010-2016
University of Chinese Academy of Sciences
2016
Institute of Chemistry
2010-2015
This work reports that cationic micelles formed by trimeric, tetrameric, and hexameric surfactants bearing amide moieties in spacers can efficiently kill Gram-negative E. coli with a very low minimum inhibitory concentration (1.70-0.93 μM), do not cause obvious toxicity to mammalian cells at the concentrations used. With increase of oligomerization degree, antibacterial activity oligomeric increases, i.e., surfactant > tetrameric trimeric surfactant. Isothermal titration microcalorimetry,...
A star-shaped hexameric quaternary ammonium surfactant (PAHB), bearing six hydrophobic chains and charged hydrophilic headgroups connected by an amide-type spacer group, was synthesized. The self-assembly behavior of the in aqueous solution studied surface tension, electrical conductivity, isothermal titration microcalorimetry, dynamic light scattering, cryogenic transmission electron microscopy, NMR techniques. results reveal that there are two critical aggregate concentrations during...
Despite efficacious antimicrobial activity, cationic oligomeric surfactants show strong skin irritation potential due to their larger charge numbers and multiple hydrophobic chains. This work reports that the incorporation of α-, β-, γ-CDs with different cavity sizes can effectively improve mildness ammonium trimeric surfactant DTAD a star-shaped spacer while maintaining its high antibacterial activity. On basis CDs asymmetry in DTAD, CD/DTAD mixtures form α-CD@DTAD, 2α-CD@DTAD, β-CD@DTAD,...
Two star-like trimeric cationic surfactants with amide groups in spacers, tri(dodecyldimethylammonioacetoxy)diethyltriamine trichloride (DTAD) and tri(dodecyldimethylammonioacetoxy)tris(2-aminoethyl)amine (DDAD), have been synthesized, the aggregation behavior of aqueous solution has investigated by surface tension, electrical conductivity, isothermal titration microcalorimetry, dynamic light scattering, cryogenic transmission electron microscopy, NMR techniques. Typically, both form...
A cell-penetrating poly(disulfide)-based star-like system with high transfection efficacy for synergistic delivery of miRNAs and chemotherapeutic drugs has been reported.
Microbial infections have become a great threat to human health and one of the main risks arises from direct contact with surfaces contaminated by pathogenic microbes. Herein, kind hexagonal column interpenetrated spheres (HCISs) are fabricated non-covalent assembly plant gallic acid quaternary ammonium surfactants. Different one-time burst release conventional antimicrobial agents, HCIS acts like "antimicrobial molecular bank" releases ingredients in multistage way, leading long-lasting...
The surface structure of the trimeric surfactant tri(dodecyldimethylammonioacetoxy)diethyltriamine trichloride (DTAD) on mica and interactions between two such DTAD-coated surfaces were determined using atomic force microscopy a balance. In an aqueous solution 3 mM, 5 times critical aggregation concentration (CAC), are coated with wormlike micelles or hemimicelles larger (∼80 nm) bilayer vesicles. Repulsive normal indicate net charge ions close to that expected from CAC. Moreover, this...
The detection of mitochondrial Cu2+ and cysteine is very important for investigating cellular functions or dysfunctions. In this study, we designed a novel cyclometalated iridium(iii) luminescence chemosensor Ir bearing bidentate chelating pyrazolyl-pyridine ligand as copper-specific receptor. biocompatible photostable complex exhibited not only mitochondria-targeting properties but also an "on-off-on" type phosphorescence change the reversible dual cysteine. had highly sensitive (detection...
The effects of anionic surfactants on the aggregation-induced emission (AIE) feature cationic M-silole molecules have been studied. electrostatic binding with greatly promotes aggregation mixtures. M-silole/surfactant aggregates at 1:1 charge ratio exhibit maximum fluorescence intensity. Excess surfactant will distribute into different micelles and weaken fluorescence. intensity mixed can be effectively modulated by choosing surfactants. gemini display a much stronger ability enhancing than...
Our study investigated the physiological and biochemical basis for effects of exogenous phenolic acids on function photosynthetic apparatus electron transport rate in strawberry seedlings. Potted seedlings (Fragaria × ananassa Duch.) were used. Syringic acid inhibited net water-use efficiency decreased. Additionally, primary quinone acceptor PSII reaction centre, centre oxygen evolving complex also impaired. Both maximum quantum yield photochemistry performance index absorption depressed,...
Mercury ion (Hg2+) is one of the most toxic heavy metal ions and lowering detection limit Hg2+ always a challenge in analytical chemistry environmental analysis. In this work, sulfhydryl functionalized carbon quantum dots (HS-CQDs) were synthesized through one-pot hydrothermal method. The obtained HS-CQDs able to detect mercury rapidly sensitively fluorescence quenching, which may be ascribed formation nonfluorescent ground-state complexes electron transfer reaction between Hg2+. A...
The self-assembly of a 1% hydrophobically modified and 30% hydrolyzed polyacrylamide (C12PAM) with cationic star-shaped oligomeric surfactants has been investigated by isothermal titration microcalorimetry, turbidimetry, ζ potential, scanning electron microscopy, (1)H NMR techniques. are composed quaternary dodecyldimethylammonium ions three or six hydrophobic chains connected polyamine spacer at the headgroup level, abbreviated as DTAD PAHB, respectively. DTAD/C12PAM PAHB/C12PAM mixed...
Interactions of trianionic curcumin (Cur3−) with a series cationic surfactants, monomeric surfactant dodecyl trimethylammonium bromide (DTAB), dimeric hexamethylene-1,6-bis(dodecyldimethylammonium bromide) (12–6–12) and trimeric tri(dodecyldimethylammonioacetoxy)diethyltriamine trichloride (DTAD), have been investigated in aqueous solution pH 13.0. Surface tension spectral measurements indicate that the surfactants display similar concentration dependent interaction process Cur3−, involving...
Methiopyrisulfuron is a novel sulfonylurea herbicide with good activity for annual broadleaf and gramineal weeds control. Present study was to investigate the effects of organic amendments (including peat (PE), sewage sludge (SS), humic acid (HA)) on adsorption, desorption leaching methiopyrisulfuron in soils. The batch equilibration technique applied adsorption-desorption experiments tested through soil column simulated under laboratory conditions. Freundlich model may well describe...
Coacervation is liquid–liquid phase separation ubiquitous in industrial applications and cellular biology. Inspired by manipulation of coacervate droplets such as P granules, we report here a regulatory strategy to manipulate synthetic coacervation spatiotemporally controllable manner. Two oppositely charged small molecules are shown separate into water result electrostatic attraction, hydrophobic effect, entropy. We identify down regulator, β-cyclodextrin, disrupt the thus dissolving...
Abstract Rapid and sensitive methods to detect proteins protein denaturation have become increasingly needful in the field of proteomics, medical diagnostics, biology. In this paper, we reported synthesis a new cationic water‐soluble conjugated polymer that contains fluorene diene moieties backbone ( PFDE ) for identification by sensing an array solutions different ionic strengths using linear discriminant analysis technique (LDA). The can form complexes with electrostatic and/or hydrophobic...
We studied the co-assembly of an oppositely changed binary mixture selenium-doped carbon quantum dots (Se-CQDs) and N,N-dimethyl octylamide-propyl tertiary amine (DOAPA) through turbidity, ζ potential measurement, cryogenic transmission electron microscopy (cryo-TEM) with aim fabricating supramolecular assemblies multiple dimensions novel morphologies. The Se-CQD/DOAPA exhibited abundant phase behavior, in which isotropic (I1) was first observed, followed by turbidity (T), precipitation (P),...