Article
Polymer Science
Jinbao Liu, Shuang Yu, Wanying Qu, Zheng Jin, Kai Zhao
Summary: A novel chitosan derivative nanoparticle was proposed for delivery purposes, with an improved synthesis method for N-2-HACC and a one-step synthesis solution from chitosan developed. By simplifying the synthesis process and reducing the amount of EPTAC used, a relatively low degree of substitution was controlled for cross-linking reactions, leading to the formation of N-2-HACC. The self-assembly preparation of a novel chitosan nanoparticle material with beta-GC resulted in excellent immune properties, offering a new strategy for chitosan self-assembled nanoparticles.
Article
Chemistry, Multidisciplinary
Nicholas R. Anderson, Jonathon Davidson, Dana R. Louie, David Serantes, Karen L. Livesey
Summary: This study investigates the agglomeration of ferromagnetic nanoparticles in a fluid, highlighting the importance of interactions between ligand coatings in determining the shapes of agglomerates. Results show that particle clumping significantly affects their macroscopic properties, with important consequences for applications. In particular, the relationship between the work done by an oscillating field on the system and the sticking parameter c is nonmonotonic.
Article
Chemistry, Multidisciplinary
Qian Zhang, Cuiling Lin, Chen Chen, Liqun Zhang, Feng Shi, Mengjiao Cheng
Summary: This study demonstrates the molecular-conformation-dependent macroscopic supramolecular self-assembly (MSA) driven by electrostatic interactions. Evidence from single molecular force spectroscopy shows that the modified polyelectrolytes on MSA component surfaces enable MSA with a loop conformation, while those with a flat conformation prevent assembly, due to distinct molecular mobility. This finding is believed to be applicable in fundamental phenomena such as surface adsorption and adhesion of polymers.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Pan Gu, Hao Li, Bijin Xiong, Jinlan Li, Zhenxian Chen, Wang Li, Xi Mao, Huayang Wang, Jing Jin, Jiangping Xu, Jintao Zhu
Summary: The crystallization degree of polymer ligands determines the assembly structure of PGNPs, whether it forms diamond-shaped platelets or highly ordered three-dimensional superlattices. Moreover, the diamond-shaped platelets can continue to grow with newly added crystalline species. This work reveals the relationship between polymer crystallization and NP assembly, providing new insights into the structure regulation of metamaterials.
Article
Chemistry, Physical
Ting Zhao, E. Yuyu, Jiwei Cui, Jingcheng Hao, Xu Wang
Summary: Macroscopic nonequilibrium assembly is achieved by integrating pH-responsive hydrogels and urea-urease clock reaction, enabling precise assembly for controlled release and mass transfer applications. Transient electrostatic attraction between hybrid polymer hydrogels is crucial for the realization of macroscopic nonequilibrium assembly, which can be controlled and repeated by adjusting synthesis parameters and fuel compositions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xuan Li, Lei Chen, Yuan Ma, Ding Weng, Zhaoxin Li, Lele Song, Xuanhe Zhang, Guoxu Yu, Jiadao Wang
Summary: A surface tension gradient-driven self-assembly strategy is proposed for the ultrafast fabrication of large-area colloidal crystals, and an ultrafast nanoparticle transfer printing method is proposed for the conversion of close-packed nanoparticle monolayers into large-area conformal micropatterns. These methods show great potential for academic and real industrial applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Weifeng Lin, Yingchun Yang, Yang Lei, Feifei An, Leming Sun, Yong Qin, Lianbing Zhang
Summary: The self-assembly of nonfluorescent peptides can generate fluorescent peptide nanoparticles for drug delivery and therapeutic agent tracking. A study demonstrated the self-assembly of the antitumor dipeptide carnosine into fluorescent carnosine nanoparticles in the presence of zinc ions, showing biocompatibility and fluorescence tracing ability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Beibei Wang, Bangqi Yin, Zhao Zhang, Yixuan Yin, Yang Yang, Haiqiao Wang, Thomas P. Russell, Shaowei Shi
Summary: By using the interactions between nanoparticles and polymeric ligands, nanoparticle surfactants can be generated at the liquid-liquid interface, increasing the binding energy. Through a simplified model, it is found that competitive ligands can reduce the binding energy, leading to the dissociation and disassembly of the surfactants at the interface and allowing the construction of responsive and reconfigurable all-liquid systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Dan Meng, Chen Li, Changlong Hao, Wenxiong Shi, Jun Xu, Maozhong Sun, Hua Kuang, Chuanlai Xu, Liguang Xu
Summary: In this study, chiral selenium nanoparticles were synthesized using cysteine and the interfacial assembly strategy, leading to the generation of self-assembled nanomembranes with controllable morphology and handedness on a large scale. The nanomembranes demonstrated ultrasensitive recognition of enantioselective kynurenine (Kyn) and could accurately distinguish L-Kyn in serum and cerebrospinal fluid samples from Alzheimer's disease patients and healthy subjects.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiao-Chang Liu, Lin Lin
Summary: The metallacages described in this study contain 1,2,3-triazole-4,5-dicarboxylic acid ligands with different linkers, exhibiting flexible coordination modes. Metallamacrocycles with h3tzdc ligands are rarely documented, as are metallacages with coordinate modes involving three metal centers. Further synthesis of complexes and analysis of their in vitro drug release and skin penetration are needed to establish definitive structure-function correlations.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Review
Chemistry, Physical
Xiao Li, Zhili Lu, Tie Wang
Summary: This study focuses on the unique fluorescence characteristics of superstructures formed by self-assembly of semiconductor nanoparticles, as well as the emergent behaviors observed in assemblies. It discusses the hierarchy and specialization of function in superstructures, and presents methodology for seeking emergent behaviors in fluorescence.
Article
Nanoscience & Nanotechnology
Ting Zhao, Zhongrui Wang, Yang Yang, Kun Liu, Xu Wang
Summary: This study presents a novel strategy for achieving cyclic and waste-free nonequilibrium assembly and disassembly of macroscopic hydrogels, utilizing an ionic strength-mediated approach. The strategy involves using ammonium carbonate as a chemical fuel to temporally regulate the attractions between oppositely charged hydrogels. This concept holds promise for creating macroscopic and microscopic nonequilibrium systems and self-adaptive materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Applied
Huimin Chen, Tianrui Zhang, Yongqi Tian, Lijun You, Yan Huang, Shaoyun Wang
Summary: This study provides insights into the mechanism of peptide gelation, offering a way to control self-assembly behaviors and achieve a variety of nanostructures. The peptide assembly process involves five stages and is highly influenced by the charging status of terminal groups. Additionally, the successful loading of curcumin into different self-assembly nanostructures demonstrates high encapsulation efficiency and effective protection.
FOOD HYDROCOLLOIDS
(2022)
Article
Chemistry, Multidisciplinary
Margaret S. Lee, Alfredo Alexander-Katz, Robert J. Macfarlane
Summary: Polymer nanocomposites are created by combining nanoscale fillers with a polymer matrix to enhance matrix properties and introduce unique behaviors. By manipulating particle organization, better control over polymer-particle interactions is achieved, allowing for the formation of ordered arrays with emergent properties. Additional stability to these lattices can be provided by adding free polymer chains, enabling the generation of nanocomposites with complete control over particle organization.
Article
Chemistry, Multidisciplinary
Jinchi Han, Farnaz Niroui, Jeffrey H. Lang, Vladimir Bulovic
Summary: The absence of a versatile, scalable, and defect-free bottom-up assembly of nanoparticles has been a challenge for the large-scale integration of nanoparticle-based devices. In this study, we propose a self-limiting dielectrophoretic approach that can precisely align nanoparticles onto electrodes over a large area. Experimental results show a 70% yield of single-nanowire assembly, and factors limiting the current yield are discussed. Improving nanoparticle-electrode contact and reducing capillary force during the drying process are expected to further increase the yield. The approach also demonstrates versatility for scalable and site-selective alignment of various nanoparticles.
