Article
Chemistry, Multidisciplinary
Yijian Tang, Jiani Ding, Wenxuan Zhou, Shuai Cao, Feiyu Yang, Yangyang Sun, Songtao Zhang, Huaiguo Xue, Huan Pang
Summary: Uniform hollow carbon materials with different morphologies have been designed through a multi-step template method and calcination of polymer precursors. Among them, hollow carbon nanospheres and hollow carbon nano-pseudoboxes show better capacitance and higher salt adsorption capacity due to their stable carbonaceous structure. The effects of shell thickness and cavity size on the capacitive deionization performance have also been studied. HCNSs-0.8 with a thicker shell and larger cavity exhibit the best salt adsorption capacity due to their large specific surface area and rich pore size distribution. These uniform hollow carbon nanoarchitectures with functional properties have potential applications in electrochemistry related fields.
Article
Materials Science, Multidisciplinary
Dipankar Ghosh, Libby J. Marshall, Giuseppe Ciccone, Wanli Liu, Adam Squires, Annela Seddon, Massimo Vassalli, Dave J. Adams
Summary: Supramolecular assembly can be used to fabricate complex functional materials, but controlling hierarchical assembly across multiple length scales is difficult. This study investigates the correlation between a supramolecular gel network and a pre-gelling aggregate using a functional dipeptide 2NapFF. By varying the counterions, different micellar structures can be formed at high pH. Replacing the counterions with a divalent calcium salt results in a cross-linked gel network or an analog gel noodles.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Chemistry, Physical
Linling Xu, Jiaqi Tao, Xianfei Zhang, Zhengjun Yao, Ali Zavabeti, Jintang Zhou
Summary: Metal-organic frameworks (MOFs) derivatives have been extensively studied as efficient electromagnetic absorbing materials. A Co@N-doped porous carbon composite with double-shell hollow structures was developed through self-templating polymerization and subsequent pyrolysis, providing a promising approach for designing hollow MOFs derivatives.
Review
Chemistry, Physical
Siddharth Gurung, Francesco Gucci, Gareth Cairns, Iva Chianella, Glenn J. T. Leighton
Summary: This review presents the current trends in synthesizing hollow silica nanospheres using hard and soft templates, highlighting the need for improvements in surface charge, surface modification, sol-gel parameters, and the interaction between silica and templates. Control over the physical structure of the nanospheres is crucial for their extensive use in various fields.
Article
Materials Science, Ceramics
Imane El Moujarrad, Rozenn Le Parc, Carole Carcel, Guillaume Toquer, Philippe Trens, David Maurin, Corentin Gauthier, Magali Gary-Bobo, Philippe Dieudonne, Luis D. Carlos, Michel Wong Chi Man, Jean-Louis Bantignies
Summary: Monodispersed hollow periodic mesoporous organosilica nanoparticles (HPMO-NPs) with controlled core cavity and PMO shell are successfully synthesized using a dual templating approach. The PMO shell exhibits a hybrid organic-inorganic framework based on phenylene bridges. The HPMO spherical nanoparticles have open periodic mesoporosity, tailored size hollow cavity, and high surface area (833 m(2) . g(-1)). Sub-50 nm hollow nanoparticles with mesoporous shells can also be obtained using the same method. The differences in textural properties between these two sizes of hollow mesoporous nano-objects are discussed.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Irina Alberg, Stefan Kramer, Christian Leps, Stefan Tenzer, Rudolf Zentel
Summary: The study demonstrates that preventing the reorganization of micelles by core-crosslinking is crucial in reducing the interaction with plasma proteins.
MACROMOLECULAR BIOSCIENCE
(2021)
Article
Instruments & Instrumentation
German Berrecoso, Susana Belen Bravo, Iker Arriaga, Nicola Abrescia, Jose Crecente-Campo, Maria Jose Alonso
Summary: Understanding the interactions between nanocarriers and plasma proteins is crucial for controlling their biological fate. This study investigated how the surface chemical composition of polymeric nanocapsules influences their protein corona fingerprint. The results showed that the presence of polyethylene glycol (PEG) reduced protein corona, while polymeric nanocapsules containing 1,2-dioleoyl-3-trimethylammonium propane (DOTAP) exhibited high adsorption of vitronectin. By analyzing the protein corona, promising polymeric nanocapsules were identified with prolonged circulation time, enhanced tumor targeting, and preferential uptake by the immune system.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2023)
Article
Polymer Science
Liangxiao Tan, Bien Tan
Summary: A self-templating strategy was proposed for the fabrication of monodisperse microporous hollow capsules, which allows control over particle size and hollow cavity. These capsules are expected to be excellent adsorbents for gas storage and efficient capture of iodine. Furthermore, functionalization of the capsules can be easily achieved using this strategy, enhancing their performance for 4NP reduction after immobilizing gold nanoparticles.
Article
Polymer Science
Zehua Li, Amanda K. Pearce, Andrew P. Dove, Rachel K. O'Reilly
Summary: This study utilized a crystallization-driven self-assembly method to prepare one-dimensional cylindrical nanoparticles with controlled lengths to improve the mechanical performance of alginate-based hydrogels. The inclusion of these cylindrical structures increased the strength of the hydrogel under shear and resulted in a 37% improvement in strain at flow point when loaded with 500 nm cylindrical micelles. Overall, the one-dimensional cylindrical nanoparticles formed through CDSA show promise as fibrillar collagen mimics for ECM scaffold models.
Article
Biochemistry & Molecular Biology
Xiaotao Wang, Yebin Yang, Gaowen Zhang, Chak-Yin Tang, Wing-Cheung Law, Cong Yu, Xuanqi Wu, Shuai Li, Yonggui Liao
Summary: Responsive drug release and low toxicity of drug carriers are crucial for controlled release systems. In this study, poly o-nitrobenzyl@UCNP nanocapsules were synthesized using a double functional diffractive o-nitrobenzyl as a crosslinker and methacrylic acid (MAA) as a monomer. These nanocapsules exhibited near-infrared (NIR) light-/pH-responsive properties, allowing efficient drug release upon NIR irradiation. The research also included the study of photodegradation kinetics and the loading of the anticancer drug doxorubicin hydrochloride (DOX). Cytotoxicity studies demonstrated that the release of DOX could be triggered by NIR to effectively kill cancer cells.
Article
Chemistry, Multidisciplinary
Yan Wang, Dominique M. E. Thies-Weesie, Esmeralda D. C. Bosman, Mies J. E. van Steenbergen, Joep van den Dikkenberg, Yang Shi, Twan Lammers, Cornelus F. van Nostrum, Vim Hennink
Summary: The size of polymeric micelles can be easily adjusted by altering the formulation properties and processing parameters. The molecular weight ratio of the hydrophilic/hydrophobic block, presence of homopolymers, and choice of solvents all influence the micelle size. The use of tetrahydrofuran and acetone as solvents results in larger micelles, while the addition of dimethylformamide to an aqueous solution and faster mixing using microfluidics promotes the formation of smaller micelles.
JOURNAL OF CONTROLLED RELEASE
(2022)
Article
Thermodynamics
Erik Bartuli, Tereza Kudelova, Miroslav Raudensky
Summary: In this work, shell-and-tube type polymeric hollow fibers heat exchangers (PHFHE) with different fiber configurations were studied, and results showed that the overall heat transfer coefficient of the cross-wound PHFHE was 6 times higher than that of the parallel fibers PHFHE.
APPLIED THERMAL ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Eunil Hahm, Ahla Jo, Eun Ji Kang, Sungje Bock, Xuan-Hung Pham, Hyejin Chang, Bong-Hyun Jun
Summary: By controlling the number of reacting SiO2@Ag NPs and the silica precursor, a uniform silica shell with thickness in the range of 5-40 nm was successfully fabricated, contributing to a comprehensive understanding of the optical properties and distance-dependent electromagnetic field effects of metal NPs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Optics
E. Irani, E. Yazdani, A. Bayat
Summary: The structural and optical properties of high luminescent CdTe/CdS core/shell quantum dots in a stable, aqueous medium have been investigated, revealing wavelength tunability by adjusting the shell thickness. A 10 nm shell thickness for CdS showed higher photoluminescence quantum yield and improved optical nonlinearities compared to CdTe quantum dots and CdTe/CdS core/shell quantum dots with 16 nm thickness.
Article
Materials Science, Ceramics
Chunjian Xue, Jinlian Zhao, Yinpeng Liu, Xiying Li, Jiwei Zhang, Jingwei Zhang
Summary: The shell thickness of hollow carbon spheres (HCs) has a significant impact on the electrochemical performance due to its effect on lithium ion transport kinetics. A simple one-pot method was developed to synthesize Ndoped hollow carbon nanospheres (NHCs) with different shell thickness (6, 10, and 13 nm) while keeping other parameters almost the same. The NHCs-1 sample with a shell thickness of 6 nm exhibited higher initial charge capacity and better cycle stability compared to NHCs-2 and NHCs-3 with thicker shells of 10 nm and 13 nm, respectively. The capacity dependence on shell thickness was explained by changes in the mass transfer coefficient of Li-ion across the wall. The outstanding electrochemical properties of NHCs were attributed to their unique hollow structure, N-doping, and high specific surface area. The strategy for preparing hollow carbon spheres with different shell thickness provides a promising alternative for developing superior electrode materials for energy storage.
CERAMICS INTERNATIONAL
(2023)
