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1. Controllable synthesis of patchy particles with tunable geometry and orthogonal chemistry

Author:
Chang, Fuqiang; Ouhajji, Samia; Townsend, Alice; Sanogo Lacina, Kanvaly; van Ravensteijn, Bas G.P.; Kegel, Willem K.
Source:
Journal of colloid and interface science 2021 v.582 pp. 333-341
ISSN:
0021-9797
Subject:
polymerization,   etc   ; anisotropy; colloids; geometry; polymers;     Show all 5 Subjects
Abstract:
... Self-assembly using anisotropic colloidal building blocks may lead to superstructures similar to those found in molecular systems yet can have unique optical, electronic, and structural properties. To widen the spectrum of achievable superstructures and related properties, significant effort was devoted to the synthesis of new types of colloidal particles. Despite these efforts, the preparation of ...
DOI:
10.1016/j.jcis.2020.08.038

2. Supramolecular Alternating Donor–Acceptor Assembly toward Intercalated Covalent Organic Frameworks

Author:
Li, Huiqing; Shao, Pengpeng; Chen, Shuqi; Li, Guosheng; Feng, Xiao; Chen, Xiong; Zhang, Hui-Jun; Lin, Jianbin; Jiang, Yun-Bao
Source:
Journal of the American Chemical Society 2020 v.142 no.8 pp. 3712-3717
ISSN:
1520-5126
Subject:
polymerization
Abstract:
... Conventionally, z-direction modulation of two-dimensional covalent organic frameworks (2D-COFs) is difficult to achieve because they rely on spontaneous π–π interactions to form 3D architectures. Herein, we report a facile construction of a novel intercalated covalent organic framework (Intercalated-COF) by synchronizing operations of supramolecular donor–acceptor (D–A) interactions (A unit: 2,5,8 ...
DOI:
10.1021/jacs.9b13559

3. Wetting for self-healing and electrowetting for additive manufacturing

Author:
Yarin, Alexander L.
Source:
Current opinion in colloid & interface science 2021 v.51 pp. 101378
ISSN:
1359-0294
Subject:
polymerization,   etc   ; contact angle; droplets; engineering; imbibition; liquids; manufacturing; nanocomposites; nanofibers; three-dimensional printing; wettability;     Show all 11 Subjects
Abstract:
... Advanced additive manufacturing actively widens its tool box of wettability-related phenomena to be used in production of new items. Novel self-healing engineering materials incorporate vascular networks with two types of nanochannels: the one containing a resin monomer, whereas another one — a curing agent. If such nanocomposites are damaged locally, both types of channels are locally broken, and ...
DOI:
10.1016/j.cocis.2020.08.003

4. Emulsion templating: Unexpected morphology of monodisperse macroporous polymers

Author:
Koch, Lukas; Botsch, Sophia; Stubenrauch, Cosima
Source:
Journal of colloid and interface science 2021 v.582 pp. 834-841
ISSN:
0021-9797
Subject:
polymerization,   etc   ; droplets; emulsions; microscopy; polymers; porous media; separation; surfactants; water solubility;     Show all 9 Subjects
Abstract:
... We synthesised monodisperse macroporous polymers via polymerisation of water-in-monomer droplet emulsions and obtained non-spherical pores with layered pore walls. We hypothesise that this morphology is caused by surfactant diffusion and phase separation during polymerisation.We varied the surfactant mass fraction of the emulsions and polymerised the templates with a water-soluble initiator. From ...
DOI:
10.1016/j.jcis.2020.08.106

5. Mixing concentrated sulfuric acid and diethylenetriamine at room temperature: A rapid and facile approach to synthesize fluorescent carbon polymer hollow spheres as peroxidase mimics

Author:
Zhang, Haiyan; Liu, Sen
Source:
Journal of colloid and interface science 2021 v.582 pp. 405-411
ISSN:
0021-9797
Subject:
polymerization,   etc   ; ambient temperature; carbon; colorimetry; fluorescence; hydrogen peroxide; mixing; nanomaterials; oxidation; peroxidase; polymers; powders; sulfuric acid;     Show all 13 Subjects
Abstract:
... Fluorescent carbon polymer nanomaterials driven by their important various applications are promising, however, their scalable usages are still hindered by the lack of facile and effective synthesis approaches. Herein, a rapid and facile approach is demonstrated for the preparation of fluorescent carbon polymer hollow spheres (CPHSs), which were synthesized by directly mixing concentrated sulfuric ...
DOI:
10.1016/j.jcis.2020.08.048

6. PANI/BaFe12O19@Halloysite ternary composites as novel microwave absorbent

Author:
Chen, Zihao; Mu, Dawei; Liu, Tianhao; He, Zilong; Zhang, Yi; Yang, Huaming; Ouyang, Jing
Source:
Journal of colloid and interface science 2021 v.582 pp. 137-148
ISSN:
0021-9797
Subject:
polymerization,   etc   ; absorbents; aniline; citrates; combustion; composite materials; electromagnetic radiation; halloysite; nanosheets;     Show all 9 Subjects
Abstract:
... A three-phase PANI/BaFe₁₂O₁₉@Hal heterostructure was designed and fabricated in this paper as efficient lightweight electromagnetic wave absorbing material through the combination of citrate assisted sol–gel self-propagating combustion and in-situ oxidative polymerization of aniline. In addition, the effects of the weight ratio of different PANI to BF@Hal on the microwave absorption properties of ...
DOI:
10.1016/j.jcis.2020.08.006

7. Detecting and correlating bacterial populations to visual color change of polydiacetylene-coated filters

Author:
Zhang, Yueyuan; Dawson, Paul L.; Hanks, Timothy W.; Northcutt, Julie K.; Tzeng, Tzuen-Rong; Pennington, William T.
Source:
Talanta 2021 v.221 pp. 121482
ISSN:
0039-9140
Subject:
polymerization,   etc   ; Escherichia coli; Listeria innocua; Salmonella Typhimurium; color; filters; microbial detection; rapid methods; regression analysis;     Show all 9 Subjects
Abstract:
... Membrane filters were coated with 10,12-pentacosadiynoic acid (PCDA) then polymerized on the filter for rapid bacterial detection and quantification. The polymerized PCDA (pPDCA)-coated filter changed color in response to Salmonella Typhimurium and Escherichia coli but not to Listeria innocua. The time required for color change of pPCDA-coated filters was determined by a visual panel. A simple lin ...
DOI:
10.1016/j.talanta.2020.121482

8. Interfacial dilatational rheology as a bridge to connect amphiphilic heterografted bottlebrush copolymer architecture to emulsifying efficiency

Author:
Hsieh, Tsung-Lin; Martinez, Michael R.; Garoff, Stephen; Matyjaszewski, Krzysztof; Tilton, Robert D.
Source:
Journal of colloid and interface science 2021 v.581 pp. 135-147
ISSN:
0021-9797
Subject:
polymerization,   etc   ; composite polymers; emulsifiers; emulsifying properties; emulsions; hydrophilicity; oils; polyethylene glycol; rheology; stress response; xylene;     Show all 11 Subjects
Abstract:
... Molecular architecture and composition of amphiphilic bottlebrush copolymers will dictate the dominant interfacial relaxation modes and the corresponding dilatational rheology for adsorbed layers at oil/water interfaces in a way that will correlate with the emulsifying efficiency of different bottlebrush copolymers.Amphiphilic, xylene-soluble poly(ethylene oxide)-poly(n-butyl acrylate) (PEO-PBA) h ...
DOI:
10.1016/j.jcis.2020.07.063

9. Unexpected thermo-responsiveness of bisurea-functionalized hydrophilic polymers in water

Author:
Mellot, Gaëlle; Guigner, Jean-Michel; Jestin, Jacques; Bouteiller, Laurent; Stoffelbach, François; Rieger, Jutta
Source:
Journal of colloid and interface science 2021 v.581 pp. 874-883
ISSN:
0021-9797
Subject:
polymerization,   etc   ; cryo-electron microscopy; dissociation; hydrogen bonding; hydrophilic polymers; hydrophobicity; micelles; phase transition; temperature; transmission electron microscopy; water solubility;     Show all 11 Subjects
Abstract:
... Thermoresponsive polymers are important materials for various applications. However, the number of polymers that exhibit this property in the temperature range of interest remains limited. The development of novel rational design strategies through the understanding of the thermal transition’s origin is therefore of utmost importance.Bisurea-functionalized water-soluble polymers were synthesized b ...
DOI:
10.1016/j.jcis.2020.07.147

10. Molecular Recognition at Septin Interfaces: The Switches Hold the Key

Author:
Rosa, Higor Vinícius Dias; Leonardo, Diego Antonio; Brognara, Gabriel; Brandão-Neto, José; D'Muniz Pereira, Humberto; Araújo, Ana Paula Ulian; Garratt, Richard Charles
Source:
Journal of molecular biology 2020 v.432 no.21 pp. 5784-5801
ISSN:
0022-2836
Subject:
polymerization,   etc   ; crystal structure; guanosinetriphosphatase;     Show all 3 Subjects
Abstract:
... The assembly of a septin filament requires that homologous monomers must distinguish between one another in establishing appropriate interfaces with their neighbors. To understand this phenomenon at the molecular level, we present the first four crystal structures of heterodimeric septin complexes. We describe in detail the two distinct types of G-interface present within the octameric particles, ...
DOI:
10.1016/j.jmb.2020.09.001

11. Covalent organic framework mesocrystals through dynamic modulator manipulated mesoscale self-assembly of imine macrocycle precursors

Author:
Chen, Xingshuai; Xia, Lieyin; Pan, Ruping; Liu, Xikui
Source:
Journal of colloid and interface science 2020 v.568 pp. 76-80
ISSN:
0021-9797
Subject:
polymerization,   etc   ; crystallization; imines; morphogenesis;     Show all 4 Subjects
Abstract:
... Framework crystallization is an unresolved challenge in the chemistry of covalent organic frameworks (COFs) due to the poorly controlled simultaneous polymerization and crystallization processes. Here, we report the first morphogenesis of COF mesocrystals with two-dimensional hexagonal p6m symmetry through the combination of alkyl amine as a dynamic modulator and 2,4,6- triformylresorcinol imine a ...
DOI:
10.1016/j.jcis.2020.02.046

12. Polymeric Helical Structures à la Carte by Rational Design of Monomers

Author:
Cobos, Katherine; Rodríguez, Rafael; Domarco, Olaya; Fernández, Berta; Quiñoá, Emilio; Riguera, Ricardo; Freire, Félix
Source:
Macromolecules 2020 v.53 no.8 pp. 3182-3193
ISSN:
1520-5835
Subject:
polymerization,   etc   ; enantiomers; polymers;     Show all 3 Subjects
Abstract:
... Preparation of helical structures à la carte by monomer design of dynamic helical polymers such as poly(phenylacetylene)s (PPAs) is a difficult task due to conformational freedom of the polyene backbone. Herein, we study the monomer/helical polymer scaffold relationship by preparation of two novel phenylacetylene monomer series substituted at the phenyl ring in ortho-, meta-, or para-positions wi ...
DOI:
10.1021/acs.macromol.0c00085

13. Transparent conductive elastomers with excellent autonomous self-healing capability in harsh organic solvent environments

Author:
Li, Ren'ai; Chen, Guangxue; Fan, Ting; Zhang, Kaili; He, Minghui
Source:
Journal of materials chemistry A 2020 v.8 no.10 pp. 5056-5061
ISSN:
2050-7496
Subject:
polymerization,   etc   ; polymers; solvents;     Show all 3 Subjects
Abstract:
... A new type of supramolecular elastomer, photopolymerized from two rationally designed polymerizable deep eutectic solvent (PDES) monomers, was reported. The resultant network was highly transparent, intrinsically conductive, stretchable, and self-healable. In particular, the healing process can even take place in various organic solvents, simultaneously with enhanced adaptability. ...
DOI:
10.1039/d0ta00050g

14. Polymerization-Induced Self-Assembly of Conjugated Block Copoly(phenylacetylene)s

Author:
Chen, Junxian; Cai, Siliang; Wang, Rong; Wang, Sheng; Zhang, Jie; Wan, Xinhua
Source:
Macromolecules 2020 v.53 no.5 pp. 1638-1644
ISSN:
1520-5835
Subject:
polymerization,   etc   ; composite polymers; tetrahydrofuran;     Show all 3 Subjects
Abstract:
... Polymerization-induced self-assembly (PISA) was developed to prepare assemblies of conjugated block copoly(phenylacetylene)s for the first time. The living dispersion polymerization of (R/S)-4-(1-phenethylbamoyl)phenylacetylene (rmAN/smAN) can be achieved in the presence of poly(phenylacetylene) (PPA) macro-initiators. The assemblies prepared from the copolymers PPAₘ-b-PrmANₙ with the short core-f ...
DOI:
10.1021/acs.macromol.9b02504

15. Efficient Synthesis of Asymmetric Miktoarm Star Polymers

Author:
Levi, Adam E.; Fu, Liangbing; Lequieu, Joshua; Horne, Jacob D.; Blankenship, Jacob; Mukherjee, Sanjoy; Zhang, Tianqi; Fredrickson, Glenn H.; Gutekunst, Will R.; Bates, Christopher M.
Source:
Macromolecules 2020 v.53 no.2 pp. 702-710
ISSN:
1520-5835
Subject:
polymerization,   etc   ; catalysts; polymers; statistics;     Show all 4 Subjects
Abstract:
... Asymmetric miktoarm star polymers produce unique material properties, yet existing synthetic strategies are beleaguered by complicated reaction schemes restricted in both the monomer scope and yield. Here, we introduce a new synthetic approach coined “μSTAR”, miktoarm synthesis by termination after ring-opening metathesis polymerization, that circumvents these traditional synthetic limitations by ...
DOI:
10.1021/acs.macromol.9b02380

16. Highly efficient photothermal conversion capric acid phase change microcapsule: Silicon carbide modified melamine urea formaldehyde

Author:
Wang, Xingang; Zhang, Chenyang; Wang, Kai; Huang, Yuqing; Chen, Zhongfa
Source:
Journal of colloid and interface science 2021 v.582 pp. 30-40
ISSN:
0021-9797
Subject:
polymerization,   etc   ; crosslinking; decanoic acid; encapsulation; heat; irradiation; melamine; phase transition; photons; silicon carbide; solar energy; thermal conductivity; thermal energy; ultrasonics; urea formaldehyde; vibration;     Show all 16 Subjects
Abstract:
... The microcapsule containing phase change materials(microPCMs) with high efficiency of photothermal conversion was prepared by in-situ polymerization via ultrasonic dispersion which used capric acid(CA) as core material and nano silicon carbide(nano-SiC) modified melamine-urea-formaldehyde(MUF) resin as wall material. The nano-SiC has good cross-linking with MUF shell. When the nano-SiC was added i ...
DOI:
10.1016/j.jcis.2020.08.014

17. Structure adjustment for enhancing the water permeability and separation selectivity of the thin film composite nanofiltration membrane based on a dendritic hyperbranched polymer

Author:
Zhang, Xiao; Chen, Tian-Hui; Chen, Fang-Fang; Wu, Hao; Yu, Chun-Yang; Liu, Li-Fen; Gao, Cong-Jie
Source:
Journal of membrane science 2021 v.618 pp. 118455
ISSN:
0376-7388
Subject:
polymerization,   etc   ; dyes; films (materials); heavy metals; hydrophilicity; hydrophobicity; iron; moieties; nanofiltration; organochlorine compounds; permeability; polyamides; polyesters; salts; sodium; thin film composite membranes;     Show all 16 Subjects
Abstract:
... In this study, a dendritic amphiphilic hyperbranched polyester acyl chloride (HPE-COCl) with abundant terminal acyl chloride groups was proposed to incorporate into the polyamide skin layer via interfacial polymerization to adjust the structure and the separation performance of the thin film composite (TFC) nanofiltration (NF) membranes. The modified NF membranes based on HPE-COCl exhibit looser, ...
DOI:
10.1016/j.memsci.2020.118455

18. Respiratory burst oxidases and apoplastic peroxidases facilitate ammonium syndrome development in Arabidopsis

Author:
Podgórska, Anna; Burian, Maria; Dobrzyńska, Katarzyna; Rasmusson, Allan G.; Szal, Bożena
Source:
Environmental and experimental botany 2021 v.181 pp. 104279
ISSN:
0098-8472
Subject:
polymerization,   etc   ; Arabidopsis thaliana; ammonium; ammonium nitrogen; cell growth; cell walls; crosslinking; enzyme activity; extracellular space; hydrogen peroxide; metabolism; nitrogen; nutrition; peroxidase; respiratory burst; signal transduction; superoxide dismutase; toxicity;     Show all 18 Subjects
Abstract:
... Ammonium-nitrogen (NH₄⁺) nutrition is linked to metabolic over-reduction for plants. The characteristic symptom of sole NH₄⁺ nutrition is growth suppression, signifying this condition as the ammonium syndrome. In the present study, we investigated the mechanism of perception of high NH₄⁺ conditions in Arabidopsis thaliana plants by examining apoplastic reactive oxygen species (ROS) metabolism. Maj ...
DOI:
10.1016/j.envexpbot.2020.104279

19. A facile method for generating worm-like micelles with controlled lengths and narrow polydispersity

Author:
Nahi, Ouassef; Cayre, Olivier J.; Kim, Yi-Yeoun; Smith, Andrew J.; Warren, Nicholas J.; Meldrum, Fiona C.
Source:
Chemical communications 2020 v.56 no.54 pp. 7463-7466
ISSN:
1364-548X
Subject:
polymerization,   etc   ; chemical compounds; micelles; sonication;     Show all 4 Subjects
Abstract:
... This work shows that highly uniform worm micelles formed by polymerisation induced self-assembly can be obtained via simple post-synthesis sonication. Importantly, this straightforward and versatile strategy yields exceptionally monodisperse worms with tunable aspect ratios ranging from 7.2 to 17.6 by simply changing the sonication time. ...
DOI:
10.1039/d0cc02313b

20. Polyamide nanofilms synthesized via controlled interfacial polymerization on a “jelly” surface

Author:
Ma, Zhao-Yu; Zhang, Xi; Liu, Chang; Dong, Shun-Ni; Yang, Jing; Wu, Guang-Peng; Xu, Zhi-Kang
Source:
Chemical communications 2020 v.56 no.53 pp. 7249-7252
ISSN:
1364-548X
Subject:
polymerization,   etc   ; hexane; nanosheets; permeability; polyamides;     Show all 5 Subjects
Abstract:
... A thermal-sensitive “jelly” was used to control the diffusion of a diamine monomer for synthesizing polyamide free-standing nanofilms with an adjustable thickness of 5–35 nm. The reduced reaction rate of the interfacial polymerization at the hexane–“jelly” interface made the synthesized nanofilms show high water permeation flux and suitable salt rejection, and they also have highly negative surfac ...
DOI:
10.1039/d0cc02555k