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1. Nano-confinement-inspired metal organic framework/polymer composite separation membranes

Author:
Yuan, Jiayin,   et al.   ; Li, Xiaoting; Wang, Naixin; Bao, Xinmin; Li, Qian; Li, Jie; Xie, Ya-Bo; Ji, Shulan; An, Quan-Fu;     Show all 9 Authors
Source:
Journal of materials chemistry A 2020 v.8 no.33 pp. 17212-17218
ISSN:
2050-7496
Subject:
annealing; asymmetric membranes; chemistry; coordination polymers; electrolytes; engineering; manufacturing; mass transfer; permeability
Abstract:
... A defect-free, robust and selective barrier is essential for manufacturing membranes with targeted high permeability and selectivity. Here we report a new route to engineering a separation composite membrane by confining both channels in nanoscale metal organic frameworks (MOFs) and charges in a polyelectrolyte in the inner space of a porous support via a counter-diffusion method. A simple thermal ...
DOI:
10.1039/d0ta02412k

2. Lightweight, Room-Temperature CO2 Gas Sensor Based on Rare-Earth Metal-Free Composites—An Impedance Study

Author:
Yuan, Jiayin,   et al.   ; Willa, Christoph; Schmid, Alexander; Briand, Danick; Koziej, Dorota;     Show all 5 Authors
Source:
ACS applied materials & interfaces 2017 v.9 no.30 pp. 25553-25558
ISSN:
1944-8252
Subject:
air quality; carbon dioxide; monitoring; relative humidity; ambient temperature; manufacturing; ionic liquids; quality control
Abstract:
... We report a light, flexible, and low-power poly(ionic liquid)/alumina composite CO₂ sensor. We monitor the direct-current resistance changes as a function of CO₂ concentration and relative humidity and demonstrate fast and reversible sensing kinetics. Moreover, on the basis of the alternating-current impedance measurements we propose a sensing mechanism related to proton conduction and gas diffusi ...
DOI:
10.1021/acsami.7b07379
PubMed:
28726384
PubMed Central:
PMC5543392

3. General Synthetic Route toward Highly Dispersed Metal Clusters Enabled by Poly(ionic liquid)s

Author:
Yuan, Jiayin,   et al.   ; Sun, Jian-Ke; Kochovski, Zdravko; Zhang, Wei-Yi; Kirmse, Holm; Lu, Yan; Antonietti, Markus;     Show all 7 Authors
Source:
Journal of the American Chemical Society 2017 v.139 no.26 pp. 8971-8976
ISSN:
1520-5126
Subject:
alloys; binding sites; catalytic activity; cations; ionic liquids; transition elements
Abstract:
... The ability to synthesize a broad spectrum of metal clusters (MCs) with their size controllable on a subnanometer scale presents an enticing prospect for exploring nanosize-dependent properties. Here we report an innovative design of a capping agent from a polytriazolium poly(ionic liquid) (PIL) in a vesicular form in solution that allows for crafting a variety of MCs including transition metals, ...
DOI:
10.1021/jacs.7b03357

4. Molecular Dynamics and Charge Transport in Highly Conductive Polymeric Ionic Liquids

Author:
Yuan, Jiayin,   et al.   ; Frenzel, Falk; Guterman, Ryan; Anton, A. Markus; Kremer, Friedrich;     Show all 5 Authors
Source:
Macromolecules 2017 v.50 no.10 pp. 4022-4029
ISSN:
1520-5835
Subject:
ammonium; calorimetry; dielectric spectroscopy; electrodes; glass transition; ionic liquids; models; molecular dynamics; molecular weight; polymerization; temperature
Abstract:
... Glassy dynamics and charge transport are studied for the polymeric ionic liquid (PIL) poly[tris(2-(2-methoxyethoxy)ethyl)ammonium acryloxypropyl sulfonate] (PAAPS) with varying molecular weight (9700, 44200, 51600, and 99500 g/mol) by broadband dielectric spectroscopy (BDS) in a wide frequency (10–²–10⁷ Hz) and temperature range (100–400 K) and by DSC- and AC-chip calorimetry. The dielectric spect ...
DOI:
10.1021/acs.macromol.7b00554

5. Flexible and Actuating Nanoporous Poly(Ionic Liquid)–Paper-Based Hybrid Membranes

Author:
Yuan, Jiayin,   et al.   ; Lin, Huijuan; Gong, Jiang; Miao, Han; Guterman, Ryan; Song, Haojie; Zhao, Qiang; Dunlop, John W. C.;     Show all 8 Authors
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.17 pp. 15148-15155
ISSN:
1944-8252
Subject:
actuators; air; deformation; fabrics; ionic liquids; mechanical properties; nanopores; paper; polyacrylic acid; vapors
Abstract:
... Porous and flexible actuating materials are important for the development of smart systems. We report here a facile method to prepare scalable, flexible actuating porous membranes based on a poly(ionic liquid)-modified tissue paper. The targeted membrane property profile was based on synergy of the gradient porous structure of a poly(ionic liquid) network and flexibility of a tissue paper. The gra ...
DOI:
10.1021/acsami.7b02920

6. Click-based porous cationic polymers for enhanced carbon dioxide capture

Author:
Yuan, Jiayin,   et al.   ; Dani, Alessandro; Crocellà, Valentina; Magistris, Claudio; Santoro, Valentina; Bordiga, Silvia;     Show all 6 Authors
Source:
Journal of materials chemistry A 2016 v.5 no.1 pp. 372-383
ISSN:
2050-7496
Subject:
Fourier transform infrared spectroscopy; acetates; anions; calorimetry; carbenes; carbon dioxide; chemical structure; heterocyclic nitrogen compounds; ionic liquids; polymers; porosity; sorption; surface area; zwitterions
Abstract:
... Imidazolium-based porous cationic polymers were synthesized using an innovative and facile approach, which takes advantage of the Debus–Radziszewski reaction to obtain meso-/microporous polymers following click-chemistry principles. In the obtained set of materials, click-based porous cationic polymers have the same cationic backbone, whereas they bear the commonly used anions of imidazolium poly( ...
DOI:
10.1039/c6ta08574a

7. Nanoporous ionic organic networks: from synthesis to materials applications

Author:
Yuan, Jiayin,   et al.   ; Sun, Jian-Ke; Antonietti, Markus;     Show all 3 Authors
Source:
Chemical Society reviews 2016 v.45 no.23 pp. 6627-6656
ISSN:
1460-4744
Subject:
catalytic activity; electrostatic interactions; energy; nanopores; polymers; porosity
Abstract:
... The past decade has witnessed rapid progress in the synthesis of nanoporous organic networks or polymer frameworks for various potential applications. Generally speaking, functionalization of porous networks to add extra properties and enhance materials performance could be achieved either during the pore formation (thus a concurrent approach) or by post-synthetic modification (a sequential approa ...
DOI:
10.1039/c6cs00597g

8. Synthesis of Dispersible Mesoporous Nitrogen-Doped Hollow Carbon Nanoplates with Uniform Hexagonal Morphologies for Supercapacitors

Author:
Yuan, Jiayin,   et al.   ; Cao, Jie; Jafta, Charl J.; Gong, Jiang; Ran, Qidi; Lin, Xianzhong; Félix, Roberto; Wilks, Regan G.; Bär, Marcus; Ballauff, Matthias; Lu, Yan;     Show all 11 Authors
Source:
ACS applied materials 2016 v.8 no.43 pp. 29628-29636
ISSN:
1944-8252
Subject:
carbon; coatings; dopamine; electrodes; gibbsite; nanoparticles; polymerization; porous media; pyrolysis; silica gel; surface area; thermoplastics
Abstract:
... In this study, dispersible mesoporous nitrogen-doped hollow carbon nanoplates have been synthesized as a new anisotropic carbon nanostructure using gibbsite nanoplates as templates. The gibbsite-silica core–shell nanoplates were first prepared before the gibbsite core was etched away. Dopamine as carbon precursor was self-polymerized on the hollow silica nanoplates surface assisted by sonification ...
DOI:
10.1021/acsami.6b08946

9. Construction of a pillar[6]arene based water-soluble supramolecular pseudopolyrotaxane driven by cucurbit[8]uril-enhanced π–π interaction

Author:
Yuan, Jiayin,   et al.   ; Yang, Jie; Shao, Li; Huang, Feihe;     Show all 4 Authors
Source:
Chemical communications 2016 v.52 no.84 pp. 12510-12512
ISSN:
1364-548X
Subject:
aromatic hydrocarbons; chemical reactions; water solubility
Abstract:
... A new pillar[6]arene based water-soluble supramolecular pseudopolyrotaxane whose repeating units are connected through cucurbit[8]uril-enhanced π–π interaction is successfully fabricated. ...
DOI:
10.1039/c6cc07433b

10. Lower critical solution temperature (LCST) phase behaviour of an ionic liquid and its control by supramolecular host–guest interactions

Author:
Yuan, Jiayin,   et al.   ; Dong, Shengyi; Heyda, Jan; Schalley, Christoph A.;     Show all 4 Authors
Source:
Chemical communications 2016 v.52 no.51 pp. 7970-7973
ISSN:
1364-548X
Subject:
cations; chemical compounds; chemical reactions; ionic liquids; molecular dynamics; simulation models; temperature
Abstract:
... Lower critical solution temperature (LCST) phase behaviour of an imidazolium-based ionic liquid is reported, which can be controlled by concentration, the choice of cation, anion and solvent, and by supramolecular host–guest complex formation. Molecular dynamics simulations provide insight into the molecular basis of this LCST phenomenon. This thermo-responsive system has potential applications in ...
DOI:
10.1039/c6cc02838a

11. Unexpected LCST-type phase behaviour of a poly(vinyl thiazolium) polymer in acetone

Author:
Yuan, Jiayin,   et al.   ; Grygiel, Konrad; Zhang, Weiyi; Detrembleur, Christophe;     Show all 4 Authors
Source:
RSC advances 2016 v.6 no.62 pp. 57117-57121
ISSN:
2046-2069
Subject:
acetone; ionic strength; phase transition; polymerization; polymers; temperature
Abstract:
... We report on an unexpected lower critical solution temperature (LCST)-type phase transition of a poly(vinyl thiazolium) polymer in acetone solution, which was synthesized via radical polymerization of its corresponding ionic monomer bearing no thermoresponsiveness in acetone. The phase transition temperature can be conveniently varied by polymer concentration, ionic strength and addition of a coso ...
DOI:
10.1039/c6ra09023k

12. Nitrogen-doped porous carbon nanosheets derived from poly(ionic liquid)s: hierarchical pore structures for efficient CO₂ capture and dye removal

Author:
Yuan, Jiayin,   et al.   ; Gong, Jiang; Lin, Huijuan; Antonietti, Markus;     Show all 4 Authors
Source:
Journal of materials chemistry A 2016 v.4 no.19 pp. 7313-7321
ISSN:
2050-7496
Subject:
adsorption; carbon; carbon dioxide; carbon nitride; carbonization; ionic liquids; methylene blue; nanosheets; nitrogen content; surface area; wastewater
Abstract:
... Poly(ionic liquid) has recently served as an important precursor for nitrogen-doped functional porous carbons. It was applied here in a facile one-pot approach to synthesize nitrogen-doped porous carbon nanosheets (NPCNSs) using C₃N₄ nanosheets as sacrificial templates. C₃N₄ nanosheets are found to improve the carbonization yield and nitrogen content of NPCNSs and additionally facilitate the forma ...
DOI:
10.1039/c6ta01945e

13. Poly(ethylene oxide)-based block copolymers with very high molecular weights for biomimetic calcium phosphate mineralization

Author:
Yuan, Jiayin,   et al.   ; Mai, Tobias; Boye, Susanne; Völkel, Antje; Gräwert, Marlies; Günter, Christina; Lederer, Albena; Taubert, Andreas;     Show all 8 Authors
Source:
RSC advances 2015 v.5 no.125 pp. 103494-103505
ISSN:
2046-2069
Subject:
ammonium hydroxide; betaine; biomimetics; calcium phosphates; chlorides; composite polymers; mineralization; molecular weight; polyethylene glycol; water solubility
Abstract:
... The present article is among the first reports on the effects of poly(ampholyte)s and poly(betaine)s on the biomimetic formation of calcium phosphate. We have synthesized a series of di- and triblock copolymers based on a non-ionic poly(ethylene oxide) block and several charged methacrylate monomers, 2-(trimethylammonium)ethyl methacrylate chloride, 2-((3-cyanopropyl)-dimethylammonium)ethyl methac ...
DOI:
10.1039/c5ra20035k

14. Poly(ionic liquid) binders as Li⁺ conducting mediators for enhanced electrochemical performance

Author:
Yuan, Jiayin,   et al.   ; Lee, Jung-Soo; Sakaushi, Ken; Antonietti, Markus;     Show all 4 Authors
Source:
RSC advances 2015 v.5 no.104 pp. 85517-85522
ISSN:
2046-2069
Subject:
carbon; cathodes; chemical structure; electrochemistry; energy; ionic liquids; lithium; lithium batteries; models
Abstract:
... A series of poly(ionic liquid)s (PILs) were used as binders for lithium-ion battery (LIB) with a LiFePO₄ cathode to explore their role and benefits in a model electrochemical energy storage system. The PILs are imidazolium-based and bear different main chain structures and alkyl substituents. The results nicely show that PILs both improve the cycling stability and specific capacity. When carefully ...
DOI:
10.1039/c5ra16535k

15. Conducting, Self-Assembled, Nacre-Mimetic Polymer/Clay Nanocomposites

Author:
Yuan, Jiayin,   et al.   ; Mäkiniemi, Roi Oskari; Das, Paramita; Hönders, Daniel; Grygiel, Konrad; Cordella, Daniela; Detrembleur, Christophe; Walther, Andreas;     Show all 8 Authors
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.29 pp. 15681-15685
ISSN:
1944-8252
Subject:
dispersions; ionic liquids; nanoclays; nanocomposites; polymers
Abstract:
... We demonstrate electrically and ionically conducting nacre-mimetic nanocomposites prepared using self-assembly of synthetic nanoclay in combination with PEDOT:PSS and a poly(ionic liquid) polymer from aqueous dispersions. The resulting nacre-mimetics show high degrees of mesoscale order and combine high stiffness and high strength. In terms of conductivities, the resulting hybrids exceed simple ad ...
DOI:
10.1021/acsami.5b04676

16. Novel polyvinylimidazolium nanoparticles as high-performance binders for lithium-ion batteries

Author:
Yuan, Jiayin,   et al.   ; Prescher, Simon; Sakaushi, Ken; Antonietti, Markus;     Show all 4 Authors
Source:
Journal of materials chemistry A 2015 v.3 no.14 pp. 7229-7234
ISSN:
2050-7496
Subject:
cathodes; durability; electrochemistry; lithium batteries; nanoparticles; polymerization; thermoplastics
Abstract:
... A series of polyvinylimidazolium-based nanoparticles were prepared via precipitation polymerization and tested as binders in cathodes of lithium ion batteries. Compared with the commercial standard poly(vinylidene fluoride), the as-synthesized nanoparticles present a superior performance. This “little change” of a polymer in otherwise unaltered devices gives not only a higher specific capacity but ...
DOI:
10.1039/c5ta01374g

17. Microstructure replication of complex biostructures via poly(ionic liquid)-assisted carbonization

Author:
Yuan, Jiayin,   et al.   ; Ambrogi, Martina; Täuber, Karoline; Antonietti, Markus;     Show all 4 Authors
Source:
Journal of materials chemistry A 2015 v.3 no.11 pp. 5778-5782
ISSN:
2050-7496
Subject:
Coleoptera; carbon; carbonization; combustion; ionic liquids; microstructure
Abstract:
... Microstructure transcription of opalescent beetles into functional carbon “bugs” via poly(ionic liquid)-assisted carbonization was reported. The presence of a thin coating layer of PIL bearing a dicyanamide anion was found to provide the most precise microstructure preservation even under aerobic combustion conditions. ...
DOI:
10.1039/c5ta00149h

18. Poly(ionic liquid)-derived nanoporous carbon analyzed by combination of gas physisorption and small-angle neutron scattering

Author:
Yuan, Jiayin,   et al.   ; Mascotto, Simone; Kuzmicz, Danuta; Wallacher, Dirk; Siebenbürger, Miriam; Clemens, Daniel; Risse, Sebastian; Antonietti, Markus; Ballauff, Matthias;     Show all 9 Authors
Source:
Carbon 2015 v.82 pp. 425-435
ISSN:
0008-6223
Subject:
adsorption; carbon; density functional theory; ionic liquids; nanopores; neutron diffraction; nitrogen; porosity; surface area; xylene
Abstract:
... The preparation of nanoporous carbon materials and their characterization combining small-angle neutron scattering (SANS) with gas physisorption is presented. Carbon with a porous structure and tunable form is obtained here by a salt-templating approach using poly(ionic liquid) as precursor. SANS in combination with contrast matching by deuterated p-xylene was used for a separation of the scatteri ...
DOI:
10.1016/j.carbon.2014.10.086

19. Poly(ethylene oxide)-b-poly(3-sulfopropyl methacrylate) Block Copolymers for Calcium Phosphate Mineralization and Biofilm Inhibition

Author:
Yuan, Jiayin,   et al.   ; Mai, Tobias; Rakhmatullina, Ekaterina; Bleek, Katrin; Boye, Susanne; Völkel, Antje; Gräwert, Marlies; Cheaib, Zeinab; Eick, Sigrun; Günter, Christina; Lederer, Albena; Lussi, Adrian; Taubert, Andreas;     Show all 13 Authors
Source:
Biomacromolecules 2014 v.15 no.11 pp. 3901-3914
ISSN:
1526-4602
Subject:
Streptococcus gordonii; aqueous solutions; bacteria; bacterial adhesion; bacterial colonization; biofilm; chemical elements; composite polymers; dental calculus; enamel; humans; hydroxyapatite; mineralization; molecular weight; polyethylene glycol; polymerization; tooth enamel; toothpaste
Abstract:
... Poly(ethylene oxide) (PEO) has long been used as an additive in toothpaste, partly because it reduces biofilm formation on teeth. It does not, however, reduce the formation of dental calculus or support the remineralization of dental enamel or dentine. The present article describes the synthesis of new block copolymers on the basis of PEO and poly(3-sulfopropyl methacrylate) blocks using atom tran ...
DOI:
10.1021/bm500888q

20. Salt-confinement enables production of nitrogen-doped porous carbons in an air oven

Author:
Yuan, Jiayin,   et al.   ; Ambrogi, Martina; Men, Yongjun; Polzer, Frank;     Show all 4 Authors
Source:
RSC advances 2014 v.4 no.71 pp. 37714-37720
ISSN:
2046-2069
Subject:
Quercus; adenine; air; biomass; carbonization; ionic liquids; leaves; nitrogen content; ovens; salts; surface area
Abstract:
... The production of nitrogen-doped porous carbons in an air oven at 750 °C with high surface area (≥500 m² g⁻¹), carbonization yield up to 35 wt% and tuneable nitrogen content from ionic liquids was reported. It utilized inorganic halide salts as the reaction medium, the activation agents, and the physical barrier. This method was successfully expanded to recyclable sea salt and natural sources, suc ...
DOI:
10.1039/c4ra06886f