Article
Chemistry, Physical
Maxwell W. Berkow, Hosu Gwak, Matthew N. Idso, Michael B. Schmithorst, Bailey E. Rhodes, Brad D. Price, Daniel S. Gianola, Songi Han, Bradley F. Chmelka
Summary: This study reports a combination of nonionic, cationic, and zwitterionic surfactants that can stabilize proteorhodopsin and direct its coassembly into robust mesostructured silica-surfactant films. The films have high loadings of functionally active protein guests. Various analyses were conducted to investigate the structure, photocycle kinetics, mechanical properties, and thermal stability of the films, revealing closely correlated relationships between these factors.
CHEMISTRY OF MATERIALS
(2023)
Article
Polymer Science
Guilherme A. Ferreira, Watson Loh, Daniel Topgaard, Olle Soderman, Lennart Piculell
Summary: In the study of internally structured block copolymer-surfactant particles, it was found that there are NMR-invisible aggregated surfactant ions in the particle core and NMR-visible surface surfactant ions in rapid exchange. The self-diffusion results show that essentially all copolymer chains are incorporated in the aggregates, and the dilute phase contains small particles created by the dispersion process rather than true thermodynamic solubility.
Article
Nanoscience & Nanotechnology
Tsung-Lun Lee, Jheng-Wei Lin, Rong-Ming Ho
Summary: This work demonstrates the controlled self-assembly of single-composition block copolymer to fabricate various nanonetwork silica monoliths, with different structures obtained by solvent annealing. Well-ordered nanonetwork SiO2 monoliths were fabricated through templated sol-gel reaction using PS-b-PDMS film as a template.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Dongyoon Woo, Minkyeong Ban, Jisung Lee, Cheol-Young Park, Jinuk Kim, Seongseop Kim, Jinwoo Lee
Summary: Anisotropic lens-shaped nitrogen-doped carbon material with unidirectionally aligned mesopores was successfully synthesized through perpendicular block copolymer self-assembly at the polymer interface. This novel material shows great potential as a potassium-ion battery anode material, making it a promising candidate for the next-generation battery systems.
CHEMICAL COMMUNICATIONS
(2023)
Article
Polymer Science
Yaron Aviv, Esra Altay, Ofer Burg, Marcus Mueller, Javid Rzayev, Roy Shenhar
Summary: The research demonstrates that the nature of the substrate has a significant impact on the self-assembled morphology and surface patterns of bottlebrush block copolymers with different side-chain lengths in films, despite the typical tendency of these polymers to form lamellar structures. By manipulating the substrate chemistry, unique morphologies can be induced in bottlebrush block copolymer films.
Article
Polymer Science
R. Simonutti, D. Bertani, R. Marotta, S. Ferrario, D. Manzone, M. Mauri, M. Gregori, A. Orlando, M. Masserini
Summary: This study investigates the effect of using different common solvents on the self-assembly behavior of block copolymer nanoparticles, finding that the hydrogen bonding ability of the solvent strongly influences the size and shape of the particles, as well as their cytotoxicity.
Article
Chemistry, Multidisciplinary
Nadia Katir, Jamal El Haskouri, Pedro Amoros, Abdelkrim El Kadib
Summary: Functionalized materials with arylgermanium were synthesized through metal-free radical-initiated hydrogermylation and embedded in a polysaccharide network using assembly methods, resulting in polysaccharide-siloxane nanostructures with unique textures.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Daniel F. Sunday, Jacob L. Thelen, Chun Zhou, Jiaxing Ren, Paul F. Nealey, R. Joseph Kline
Summary: The study investigates how interactions between the substrate and block copolymers (BCPs) with varying substrate affinity affect the interfacial width between polymer components. The results show that strong adsorption of P2VP to the substrate significantly expands the interface width, while the PMMA block appears to be more mobile.
Article
Polymer Science
Mingyang Chen, Yuguo Chen, Yanyan Zhu, Ying Jiang, David Andelman, Xingkun Man
Summary: We investigated the influence of chain flexibility on the self-assembly behavior of symmetric diblock copolymers (BCPs) in thin film confinement. Using worm-like chain (WLC) self-consistent field theory, we studied the stability of parallel and perpendicular orientations of BCP lamellar phases under varying chain flexibilities. The results showed that the stability of perpendicular lamellae increases with chain rigidity, except for the case of rigid chains on rough substrates where the stability decreases. We also demonstrated the effect of substrate roughness on the critical value of substrate preference for the transition from perpendicular-to-parallel lamellar phases.
Article
Polymer Science
Andrew Selkirk, Nadezda Prochukhan, Ross Lundy, Cian Cummins, Riley Gatensby, Rachel Kilbride, Andrew Parnell, Jhonattan Baez Vasquez, Michael Morris, Parvaneh Mokarian-Tabari
Summary: This study overcomes the kinetic challenges in the self-assembly of UHMW BCPs through precision solvent annealing, resulting in highly ordered large-period lamellar domains. The research reveals that film thickness and solvent concentration significantly affect the domain morphology.
Article
Polymer Science
Deborah Y. Liu, Daniel Krogstad
Summary: The study explores the use of ionic liquid as both a curing agent and a structure-directing agent in epoxy/BCP blends, achieving a wide range of self-assembled structures in the uncured blends, including hexagonally packed cylinders and lamellar structures. Many compositions undergo phase transitions during the curing process, with some transitions proving to be quite complex.
Article
Polymer Science
Xuechen Yin, David R. O. Hewitt, Bingqian Zheng, Suan P. Quah, Christopher B. Stanley, Robert B. Grubbs, Surita R. Bhatia
Summary: This study presents the nanoscale assembly of PLA-PEOPLA triblock copolymers in water, with a focus on the effect of stereochemistry on micellar properties. Different L/D ratios of PLA blocks were found to impact aggregation numbers and interactions between PLA chains, demonstrating the potential for tuning micellar properties for specific applications.
Article
Chemistry, Applied
Xixi Gu, Xiangping Meng, Yun Zhu, Guiyou Wang
Summary: A robust superhydrophobic coating material HFHm with high surface roughness and fluorine content has been successfully synthesized. It can form a strong superhydrophobic surface on smooth substrates and exhibits good durability.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Polymer Science
Stepan A. Ostanin, Maxim Mokeev, Dmitry Pikhurov, Aleksandr S. Sakhatskii, Vjacheslav V. Zuev
Summary: Aromatic-oxyaliphatic polyurethanes were synthesized with varying mass fractions of components, including fluorinated fragments, and their rigid domains were found to be formed by units containing urethane bonds as well as oxyethylene fragments. The urethane bonds and oxyethylene fragments were incorporated into both rigid and soft phases, showing good agreement with the Cooper and Tobolsky model under specific solubility parameters for different segments.
Article
Engineering, Environmental
Ahmed F. M. EL-Mahdy, Tzu Ching Yu, Shiao-Wei Kuo
Summary: In this study, a series of tunable multiple heteroatom-doped mesoporous carbon/silica composites were synthesized through a facile tricomponent co-assembly approach. These composites, with high N, O, and Si atom contents and different mesostructures, exhibited exceptional supercapacitor efficiencies, making them promising for high-performance energy storage applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Vitalii Tkachenko, Camelia Matei Ghimbeu, Cyril Vaulot, Ludovic Josien, Loic Vidal, Julien Poly, Abraham Chemtob
Article
Chemistry, Applied
Lingli Ni, Cheng Zhu, Shizhong Zhang, Peng Cai, Aissam Airoudj, Laurent Vonna, Samar Hajjar-Garreau, Abraham Chemtob
PROGRESS IN ORGANIC COATINGS
(2019)
Article
Chemistry, Applied
B. El Fouhaili, A. Ibrahim, C. Dietlin, A. Chemtob, X. Allonas, C. Croutxe-Barghorn
PROGRESS IN ORGANIC COATINGS
(2019)
Article
Chemistry, Physical
Vitalii Tkachenko, Ludovic Josien, Gautier Schrodj, Samar Hajjar-Garreau, Sebastien Urbaniak, Julien Poly, Abraham Chemtob
COLLOID AND POLYMER SCIENCE
(2020)
Article
Polymer Science
Vitalii Tkachenko, Loic Vidal, Ludovic Josien, Marc Schmutz, Julien Poly, Abraham Chemtob
Article
Polymer Science
Emna Chaabouni, Vitalii Tkachenko, Loic Vidal, Noureddine Allouche, Abraham Chemtob
Summary: A novel class of fully photodegradable all-acrylic poly(hydroxyethyl acrylate)-b-poly(o-nitrobenzyl acrylate) (PHEA-PNBA) nanoparticles has been investigated, showing the ability for fast and complete degradation. These nanoparticles are synthesized through dispersion polymerization-induced self-assembly and utilize a self-immolation mechanism for degradation. The focus of the research is on understanding the reaction parameters that control degradation rates.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Cuong Minh Quoc Le, Tatiana Petitory, Xingyu Wu, Arnaud Spangenberg, Joanna Ortyl, Mariusz Galek, Lorena Infante, Heloise Therien-Aubin, Abraham Chemtob
Summary: The study introduces a new water-soluble photoinitiator with absorption in the visible and near-UV range, suitable for preparing hydrogels and aqueous polymer dispersions. This photoinitiator exhibits characteristics such as water solubility, shelf stability, low cytotoxicity, and efficient alpha-scission.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Xingyu Wu, Bryan Gross, Benjamin Leuschel, Karine Mougin, Sebastien Dominici, Simon Gree, Mehdi Belqat, Vitalii Tkachenko, Benjamin Cabannes-Boue, Abraham Chemtob, Julien Poly, Arnaud Spangenberg
Summary: This study successfully achieved 3D microstructures printing using photo-controlled RAFT polymerization, obtaining structures with feature sizes of around 500 nm through precise spatial control of the photoreaction. The use of dormant polymeric RAFT agents allowed for photo-induced post-modification of the printed microstructures via elaboration of multi-chemistry patterns. These findings open up new perspectives in multi-material and 4D micro-printing.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Polymer Science
Cuong Minh Quoc Le, Gautier Schrodj, Ibrahima Ndao, Brahim Bessif, Barbara Heck, Thomas Pfohl, Guenter Reiter, Justine Elgoyhen, Radmila Tomovska, Abraham Chemtob
Summary: The photocatalytic thiol-ene aqueous emulsion polymerization under visible-light is a novel method to prepare linear semicrystalline latexes with specific properties. The reaction conditions are mild, the reaction time is short, and the resulting products exhibit a unique structure and characteristics.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Vitalii Tkachenko, Philippe Kunemann, Jean Pierre Malval, Tatiana Petithory, Laurent Pieuchot, Loic Vidal, Abraham Chemtob
Summary: Self-assembled block copolymer nanoparticles with high stability and uniformity were successfully prepared using photomediated RAFT polymerization-induced self-assembly method. The nanoparticles show potential for bioimaging applications due to their high stability and high yield.
Article
Chemistry, Physical
Cuong Minh Quoc Le, Marc Schmutz, Abraham Chemtob
Summary: By investigating the relationship between different monomers, it is found that above the critical micellar concentration, there is an exponential relationship between the number of particles and surfactant concentration, with the exponent depending on the polarity of the monomers. When one of the two monomers is highly hydrophobic, the exponent is generally higher.
COLLOID AND POLYMER SCIENCE
(2022)
Article
Polymer Science
Cuong Minh Quoc Le, Fabrice Morlet-Savary, Abraham Chemtob
Summary: This study demonstrates the significant role of thiyl radicals produced by thiol oxidation in driving the spontaneous thiol-ene polymerization in the absence of solvents, heating, and intentional radical formation. Factors influencing reactivity, kinetics, solvation of thiols, and nature of initiating radicals were studied through various techniques, showing that the polarization of S-H bond drives thiol air oxidation. Thiols with electron-withdrawing substituents and hydrogen-bonded thiol-solvent (or thiol-alkene) complexes promote self-initiation by increasing S-H bond polarization.
Article
Polymer Science
Cuong Minh Quoc Le, Loic Vidal, Marc Schmutz, Abraham Chemtob
Summary: This study investigates the preparation of complex polymer colloids through miniemulsion polymerization, focusing on factors such as limited solubility and Ostwald ripening that affect droplet stability. The addition of a radical scavenger can delay polymerization, allowing for the determination of batch photopolymerization kinetics, molecular weight progress, and particle size distribution. The study emphasizes how initiator solubility, droplet size, and monomer solubility impact droplet nucleation.
Article
Chemistry, Multidisciplinary
Thi Kim Hoang Trinh, Gautier Schrodj, Severinne Rigolet, Julien Pinaud, Patrick Lacroix-Desmazes, Loic Pichavant, Valerie Heroguez, Abraham Chemtob
Article
Polymer Science
Vitalii Tkachenko, Camelia Matei Ghimbeu, Cyril Vaulot, Loic Vidal, Julien Poly, Abraham Chemtob