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1. Family of Highly Luminescent Pure Ionic Copper(I) Bromide Based Hybrid Materials

Author:
Chen, Shuqin; Gao, Jianmei; Chang, Junyu; Li, Yanqi; Huangfu, Changxin; Meng, Hu; Wang, Yu; Xia, Guangjie; Feng, Liang
Source:
ACS applied materials & interfaces 2019 v.11 no.19 pp. 17513-17520
ISSN:
1944-8252
Subject:
quaternary ammonium compounds,   etc   ; anions; cations; commercialization; ligands; luminescence;     Show all 6 Subjects
Abstract:
... While a number of highly luminescent copper(I) halide based hybrid materials built on coordinate bonds (Cu–L; L = N, P, S-based ligands) have been obtained, the poor structural stability largely limited their commercialization. In contrast, according to the previous studies, the ionic structures (L-free) are more stable than those built on Cu–L coordinate bonds. However, the extremely weak emissio ...
DOI:
10.1021/acsami.9b02418

2. Self-Catalyzed Living Radical Polymerization Using Quaternary-Ammonium-Iodide-Containing Monomers

Author:
Wang, Chen-Gang; Oh, Xin Yi; Liu, Xu; Goto, Atsushi
Source:
Macromolecules 2019 v.52 no.7 pp. 2712-2718
ISSN:
1520-5835
Subject:
quaternary ammonium compounds,   etc   ; acrylates; catalysts; composite polymers; moieties; polymerization;     Show all 6 Subjects
Abstract:
... Self-catalyzed living radical polymerization using quaternary ammonium iodide (QAI)-containing monomers is reported. The monomer contains a polymerizable methacrylate or acrylate moiety and QAI as a catalytic moiety at the side chain. Several (functional) methacrylates and acrylates were successfully copolymerized with QAI-containing monomers without additional catalysts, generating QAI-containing ...
DOI:
10.1021/acs.macromol.9b00137

3. Endowing a Light-Inert Aqueous Surfactant Two-Phase System with Photoresponsiveness by Introducing a Trojan Horse

Author:
Yu, Menghong; Liu, Zihao; Du, Yichen; Ma, Cheng; Yan, Yun; Huang, Jianbin
Source:
ACS applied materials & interfaces 2019 v.11 no.16 pp. 15103-15110
ISSN:
1944-8252
Subject:
quaternary ammonium compounds,   etc   ; encapsulation; light; mixing; sodium; surfactants; ultraviolet radiation;     Show all 7 Subjects
Abstract:
... The ability to modulate the phase behavior of an aqueous surfactant two-phase (ASTP) system reversibly with light is of great importance in both fundamental and applied science. Thus far, most of the light-responsive ASTP systems are based on covalent modification of the component molecules. In this article, we, for the first time, achieve photoresponsiveness in a light-inert ASTP system by physic ...
DOI:
10.1021/acsami.8b20817

4. m-s-m Cationic Gemini and Zwitterionic Surfactants–Spacer-Dependent Synergistic Interactions

Author:
McLachlan, Aleisha; Singh, Kulbir; Piggott, Emily; McAlduff, Michael; MacLennan, Shannon; Sandre, Victoria; Reid, Taryn; Marangoni, D. Gerrard
Source:
TheJournal of physical chemistry 2019 v.123 no.8 pp. 1855-1868
ISSN:
1520-5207
Subject:
quaternary ammonium compounds,   etc   ; cationic surfactants; micelles; spectroscopy; synergism; zwitterions;     Show all 6 Subjects
Abstract:
... Critical micelle concentration (cmc) values were determined for the mixed zwitterionic/cationic gemini systems of N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (ZW3–12)/N,N′-bis(dimethyldodecyl)-α,ω-alkanediammonium dibromide (12-s-12) systems. The cmc values for the mixed systems were determined through conductivity measurements. The degree of nonideality of the interaction in the mixed mic ...
DOI:
10.1021/acs.jpcb.8b09771

5. High proton conduction in an excellent water-stable gadolinium metal–organic framework

Author:
Xing, Xiu-Shuang; Fu, Zhi-Hua; Zhang, Ning-Ning; Yu, Xiao-Qing; Wang, Ming-Sheng; Guo, Guo-Cong
Source:
Chemical communications 2019 v.55 no.9 pp. 1241-1244
ISSN:
1364-548X
Subject:
quaternary ammonium compounds,   etc   ; chemical reactions; coordination polymers; gadolinium; relative humidity;     Show all 5 Subjects
Abstract:
... A new metal–organic framework with excellent water stability, {H[(N(CH₃)₄)₂][Gd₃(NIPA)₆]}·3H₂O (1, H₂NIPA = 5-nitroisophthalic acid), displays a proton conductivity of 7.17 × 10⁻² S cm⁻¹ (at 75 °C and 98% relative humidity), which is among the highest values for proton-conducting MOFs. ...
DOI:
10.1039/c8cc08700h

6. Kinetic Measurements on CO₂ Hydrate Formation in the Presence of Tetra-n-butyl Ammonium Bromide

Author:
Zhou, Xuebing; Long, Zhen; Tang, Cuiping; Liang, Deqing
Source:
Energy & fuels 2018 v.32 no.9 pp. 9683-9691
ISSN:
1520-5029
Subject:
quaternary ammonium compounds,   etc   ; carbon dioxide; crystallization; liquids;     Show all 4 Subjects
Abstract:
... Ionic clathrate hydrates are promising materials for hydrate-based CO₂ capture due to their mild forming conditions. In this work, hydrate crystallizations from different TBAB solutions were measured. The effect of TBAB concentration on hydrate nucleation time, hydrate growth, and gas storage capacity were evaluated. The TBAB concentration ranging from 0.3 to 7.5 mass % was found to be ideal for e ...
DOI:
10.1021/acs.energyfuels.8b01914

7. Hydroxide-ion-conductive gas barrier films based on layered double hydroxide/polysulfone multilayers

Author:
Xu, Xiaozhi; Wang, Lumei; Wang, Jiajie; Yin, Qing; Dong, Siyuan; Han, Jingbin; Wei, Min
Source:
Chemical communications 2018 v.54 no.56 pp. 7778-7781
ISSN:
1364-548X
Subject:
quaternary ammonium compounds,   etc   ; chemical reactions; polymers;     Show all 3 Subjects
Abstract:
... A dual-functional organic–inorganic film with gas barrier and hydroxide ion conductivity properties was fabricated via the layer-by-layer assembly of layered double hydroxide (LDH) nanoplates and quaternary ammonium grafted polysulfone (QAPSF). By incorporating inorganic flakes with high ionic conductivity and gas barrier effects into an ion-conductive polymer matrix, this work overcomes the commo ...
DOI:
10.1039/c8cc02900h

8. Insertion and Expulsion Mechanism of an Amphiphile in a Membrane Mimetic C

Author:
Ruiz-Fernández, A. R.
Source:
Journal of physical chemistry 2018 v.122 no.2 pp. 1192-1196
ISSN:
1932-7455
Subject:
quaternary ammonium compounds,   etc   ; hydrophobicity; molecular dynamics; surfactants;     Show all 4 Subjects
Abstract:
... A theoretical study, validated with experimental data, on the mechanism of insertion/expulsion of an amphiphile from its aggregate is presented. Using molecular dynamics (MD), the equilibrium of tetradecyltrimethylammonium (TTA⁺) between the aqueous phase and a bilayer, with TTA⁺ as the main component, was simulated. In order to be inserted, the first interaction of TTA⁺ with the bilayer is with t ...
DOI:
10.1021/acs.jpcc.7b09694

9. Reaction of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine with benzyltriethylammonium chloride

Author:
Kalogirou, Andreas S.; Manoli, Maria; Koutentis, Panayiotis A.
Source:
Tetrahedron letters 2018
ISSN:
0040-4039
Subject:
quaternary ammonium compounds,   etc   ; chemical reactions; crystal structure;     Show all 3 Subjects
Abstract:
... 3,4,4,5-Tetrachloro-4H-1,2,6-thiadiazine was reacted with BnEt3NCl (10 mol%) to give perchloro-9-thia-1,5,8,10-tetraazaspiro[5.5]undeca-1,4,7,10-tetraene (up to 18% yield), 4,5,6-trichloropyrimidine-2-carbonitrile (up to 44% yield) and four minor side products: 2,7-dichlorothiazolo[5,4-d]pyrimidine-5-carbonitrile, 2-(4-chloro-6H-thiazolo[5,4-c][1,2,6]thia-diazin-6-ylidene)malononitrile, 4,8-dichlo ...
DOI:
10.1016/j.tetlet.2018.08.007

10. DTAB micelle formation in ionic liquid/water mixtures is determined by ionic liquid cation structure

Author:
Lam, Minh T.; Adamson, William D.; Miao, Shurui; Atkin, Rob; Warr, Gregory G.
Source:
Journal of colloid and interface science 2019 v.552 pp. 597-603
ISSN:
0021-9797
Subject:
quaternary ammonium compounds,   etc   ; cations; ionic liquids; micelles; mixing; nanomaterials; neutrons; nitrates; solubility;     Show all 9 Subjects
Abstract:
... The high CMCs and low aggregation numbers of ionic micelles in the extreme electrolyte environment of ionic liquids (ILs) seem to be at odds with the effect of dilute aqueous electrolytes, which lower CMCs and promote elongated micelles. We hypothesise that the driving force for micellisation in ILs is determined by their underlying amphiphilic nanostructure, and that this can be controlled by mix ...
DOI:
10.1016/j.jcis.2019.05.082

11. Synthesis, surface properties and antimicrobial performance of novel gemini pyridinium surfactants

Author:
Hao, Junsheng; Qin, Tao; Zhang, Yongbin; Li, Yifei; Zhang, Yue
Source:
Colloids and surfaces 2019 v.181 pp. 814-821
ISSN:
0927-7765
Subject:
quaternary ammonium compounds,   etc   ; Escherichia coli; adsorption; ammonium salts; antimicrobial properties; moieties; salts; surfactants;     Show all 8 Subjects
Abstract:
... A series of novel gemini pyridinium surfactants with different alkyl chains were synthesized and characterized. The surface properties and aggregation behavior of the gemini surfactants in solution were studied. The gemini pyridinium salts exhibit higher surface activity than quaternary ammonium salts and can form vesicles above critical micellization concentration (CMC). The antimicrobial perform ...
DOI:
10.1016/j.colsurfb.2019.06.028

12. A SO2F2 mediated mild, practical, and gram-scale dehydroxylative transforming primary alcohols to quaternary ammonium salts

Author:
Zhao, Chuang; Zha, Gao-Feng; Fang, Wan-Yin; Alharbi, Njud S.; Qin, Hua-Li
Source:
Tetrahedron 2019 v.75 no.33 pp. 4648-4656
ISSN:
0040-4020
Subject:
quaternary ammonium compounds,   etc   ; alcohols; ammonium salts; chemical reactions; chemical structure; ethers; feathers; filtration; sulfuryl fluoride;     Show all 9 Subjects
Abstract:
... A simple, practical and gram-scale process for direct transformation of primary alcohols or silyl ethers to ammonium salts was developed. This method has the feathers of easy work-up (a simple filtration), mild condition, high yield, great practicality and robustness. And the application of the ammonium salts in Suzuki coupling reaction was also accomplished. ...
DOI:
10.1016/j.tet.2019.07.007

13. Surfactant-assistant atmospheric acid leaching of laterite ore for the improvement of leaching efficiency of nickel and cobalt

Author:
Zhang, Peiyu; Sun, Linquan; Wang, Hairui; Cui, Jiwei; Hao, Jingcheng
Source:
Journal of cleaner production 2019 v.228 pp. 1-7
ISSN:
0959-6526
Subject:
quaternary ammonium compounds,   etc   ; adsorption; cobalt; laterites; leaching; nickel; surface tension; surfactants; temperature; viscosity; zeta potential;     Show all 11 Subjects
Abstract:
... Atmospheric acid leaching has attracted great attention from scientists due to the mild leaching conditions. However, the leaching efficiency of nickel is lower than that using high pressure acid leaching. Herein, we report the use of a surfactant (e.g., stearyltrimethyl ammonium chloride, STAC) to improve the leaching efficiency of Ni. The effects of surfactant type, ore-surfactant ratio, leachin ...
DOI:
10.1016/j.jclepro.2019.04.305

14. Facile preparation of novel cardo Poly(oxindolebiphenylylene) with pendent quaternary ammonium by superacid-catalysed polyhydroxyalkylation reaction for anion exchange membranes

Author:
Ren, Rong; Zhang, Shuomeng; Miller, Hamish Andrew; Vizza, Francesco; Varcoe, John Robert; He, Qinggang
Source:
Journal of membrane science 2019
ISSN:
0376-7388
Subject:
quaternary ammonium compounds,   etc   ; anion-exchange membranes; catalytic activity; fuel cells; polymers; sodium hydroxide; water uptake;     Show all 7 Subjects
Abstract:
... Novel anion exchange membranes (AEMs) with C-C polymer backbones, cardo fragments, flexible alkyl side chains and cyclic quaternary ammonium (QA) groups were designed and synthesized. Cardo poly(oxindolebiphenylylene) polymers with pendent cyclic QAs of different length (POXIA-Br) were prepared by a superacid-catalysed polyhydroxyalkylation reaction and subsequent quaternion functionalization. Thi ...
DOI:
10.1016/j.memsci.2019.117320

15. The adsorption characteristics of fluoride on commercial activated carbon treated with quaternary ammonium salts (Quats)

Author:
Chen, Ching-Lung; Park, Sang-Won; Su, Jenn Feng; Yu, Yu-Han; Heo, Jae-eun; Kim, Kyung-duk; Huang, C.P.
Source:
The Science of the total environment 2019 pp. 133605
ISSN:
0048-9697
Subject:
quaternary ammonium compounds,   etc   ; activated carbon; adsorption; ammonium salts; desorption; fluorides; micelles; pH; sorption isotherms;     Show all 9 Subjects
Abstract:
... Commercial activated carbon was treated with six quaternary ammonium salts (Quats), namely, hexyltrimethylammonium (HTMA), octyltrimethylammonium (OTMA), decyltrimethylammonium (DCTMA), dodecyltrimethylammonium (DDTMA), Tetradecyltrimethylammonium (TDTMA), and hexadecyltrimethylammoium (HDTMA) as to enhance the fluoride adsorption capacity. In batch mode experiments, fluoride adsorption onto the Q ...
DOI:
10.1016/j.scitotenv.2019.133605

16. Enhanced performance and stability of p–i–n perovskite solar cells by utilizing an AIE-active cathode interlayer

Author:
Tu, Jin; Liu, Cong; Fan, Yunhao; Liu, Fan; Chang, Kai; Xu, Zijian; Li, Qianqian; Chen, Yiwang; Li, Zhen
Source:
Journal of materials chemistry A 2019 v.7 no.26 pp. 15662-15672
ISSN:
2050-7496
Subject:
quaternary ammonium compounds,   etc   ; absorption; ammonium salts; cathodes; electron transfer; silver; solar cells; ultraviolet radiation;     Show all 8 Subjects
Abstract:
... A new alcohol-soluble AIE-active quaternary ammonium salt PTN-Br was prepared and developed as the cathode interfacial layer (CIL) between the Ag electrode and [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) in p–i–n perovskite solar cells (PVSCs). Excitingly, the device showed a reduced work function (WF) of the commonly used Ag electrode, improved cathode interfacial contact, accelerated elect ...
DOI:
10.1039/c9ta02488c

17. Structure and Transport Properties of Lithium-Doped Aprotic and Protic Ionic Liquid Electrolytes: Insights from Molecular Dynamics Simulations

Author:
Nasrabadi, Amir Taghavi; Ganesan, Venkat
Source:
TheJournal of physical chemistry 2019 v.123 no.26 pp. 5588-5600
ISSN:
1520-5207
Subject:
quaternary ammonium compounds,   etc   ; ionic liquids; ions; lithium; lithium batteries; molecular dynamics; salt concentration; simulation models; viscosity;     Show all 9 Subjects
Abstract:
... Protic ionic liquids (PILs) have been recently the subject of experiments for lithium-ion batteries (LIBs) applications, showing promising properties, in some cases better performance than aprotic ionic liquids (AILs). With the aim of a direct comparison between the performance of PIL and AIL electrolytes in LIBs, we conducted molecular dynamics simulations of corresponding lithium-salt-doped elec ...
DOI:
10.1021/acs.jpcb.9b04477

18. Influence of Tetrapropylammonium and Ethylenediamine Structure-Directing Agents on the Framework Al Distribution in B–Al–MFI Zeolites

Author:
Hur, Young Gul; Kester, Philip M.; Nimlos, Claire T.; Cho, YoonRae; Miller, Jeffrey T.; Gounder, Rajamani
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.27 pp. 11849-11860
ISSN:
1520-5045
Subject:
quaternary ammonium compounds,   etc   ; aluminum; catalytic activity; crystallites; crystallization; ethylenediamines; process design; silicon; zeolites;     Show all 9 Subjects
Abstract:
... We report synthetic protocols to independently influence composition and crystallite sizes of MFI zeolites, properties that contribute to Thiele moduli, and the proximity of Al heteroatoms at fixed composition (Si/Al ∼ 50). Crystallite sizes decrease with the addition of non-catalytic B heteroatoms in B–Al–MFI zeolites. Using only tetra-n-propylammonium (TPA⁺) as a structure-directing agent (SDA) ...
DOI:
10.1021/acs.iecr.9b01726

19. System for mercury preconcentration in natural waters based on a polymer inclusion membrane incorporating an ionic liquid

Author:
Elias, Gemma; Díez, Sergi; Fontàs, Clàudia
Source:
Journal of hazardous materials 2019 v.371 pp. 316-322
ISSN:
0304-3894
Subject:
quaternary ammonium compounds,   etc   ; biofilm; cations; cellulose; cysteine; groundwater; ionic liquids; mercury; plasticizers; polymers; rivers; seawater;     Show all 12 Subjects
Abstract:
... In this study, we have evaluated two different ionic liquids (IL) as extractants based on the same cation (trioctylmethylammonium) but bearing the anion thiosalicylate (TOMATS) or salicylate (TOMAS). Both IL have been incorporated as carriers in polymer inclusion membranes (PIMs), and mercury (Hg) has been preconcentrated using a special device. Results show that among the tested IL, TOMATS has gi ...
DOI:
10.1016/j.jhazmat.2019.03.017

20. Improved Passivation of PbS Quantum Dots for Solar Cells Using Triethylamine Hydroiodide

Author:
Park, Dasom; Azmi, Randi; Cho, Youngho; Kim, Hyung Min; Jang, Sung-Yeon; Yim, Sanggyu
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.12 pp. 10784-10791
ISSN:
2168-0485
Subject:
quaternary ammonium compounds,   etc   ; acidity; dissociation; ligands; oleic acid; quantum dots; solar cells; triethylamine;     Show all 8 Subjects
Abstract:
... Surface passivation of colloidal quantum dot (CQD) is one of the most crucial factors used to determine the power conversion efficiency (PCE) of CQD based solar cell (CQDSC) devices. In this work, we developed novel alkylammonium iodide based ligands, which can achieve more effective passivation of iodide for PbS based CQD than the conventionally used tetra-n-butylammonium iodide (TBAI). Sufficien ...
DOI:
10.1021/acssuschemeng.9b01542