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
Sudipta Mondal, Pavel Rehak, Nandita Ghosh, Petr Kral, Ehud Gazit
Summary: This study demonstrates the formation of high persistence length one-dimensional arrays templated by self-assembling peptide fibers with asymmetrically distributed charged surfaces. The asymmetric nature of the peptide fibers allows charge-dependent deposition of nanoparticles, resulting in the formation of 1D arrays with higher persistence lengths.
Article
Chemistry, Physical
Yuting Liang, Di Xiang, Ying Hou, Guangshe Li, Shouhua Feng, Ming Yang
Summary: The research shows that size is a common structural driving force for controlling hierarchical assembly of inorganic nanoparticles into anisotropic superstructures. The increase in size creates an effective kinetic barrier at different attachment sites, switching the assembly pathway from thermodynamically preferred 3D to kinetically favored 1D. Furthermore, the size-encoded hierarchical assembly is accompanied by ligand-controlled Oswald ripening process, resulting in the variation of hierarchical patterns from chains to tubules.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Yuxuan Zhang, Jie Huang, Jun Zhang, Xinyuan Zhu, Gangsheng Tong
Summary: This study reports the preparation of photo-responsive polypeptoids through ring-opening polymerization and their reversible photo-responsive behavior in both organic and aqueous solutions. The polypeptoids with azobenzene side chains can form various polymeric assemblies depending on the chain length of PAzo, showing reversible morphology transformation upon alternating UV-vis light irradiation. These new photo-responsive and biocompatible polypeptoid-based materials have significant potential for biomedical and bioengineering applications.
Article
Chemistry, Multidisciplinary
J. Mohapatra, J. Elkins, M. Xing, D. Guragain, Sanjay R. Mishra, J. Ping Liu
Summary: Self-assembly of nanoparticles can lead to the formation of new materials with desired physical properties. In this study, composition-modulated bimagnetic nanoparticles were used to produce ordered structures with enhanced magnetic properties, such as anisotropy and remanent magnetization. The presence of magnetic fields during assembly played a key role in the formation of oriented nanoparticle chains in superlattice structures.
Article
Chemistry, Multidisciplinary
Fan Yang, Shunsheng Ye, Wenhao Dong, Di Zheng, Yifan Xia, Chenglin Yi, Jing Tao, Chang Sun, Lei Zhang, Lu Wang, QianYun Chen, Yazi Wang, Zhihong Nie
Summary: This study presents a facile laser-scanning-based method to fabricate quasi-3D patterned arrays of plasmonic nanoparticle dimers with controlled orientation. The approach is highly flexible in forming high-resolution patterns of plasmonic dimers of different sizes and shapes.
ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Mingyan Gao, Jing Hu, Jianfei Wang, Mengnan Liu, Xiaona Zhu, Sadaf Saeed, Cuihua Hu, Zhengxun Song, Hongmei Xu, Zuobin Wang
Summary: In this study, the effects of DNA concentration, magnetic field intensity and direction, and modification of mica surface on DNA self-assembly were investigated using atomic force microscopy. The results showed that these factors play important roles in DNA self-assembly.
Article
Chemistry, Multidisciplinary
Anirban Som, Alessandra Griffo, Indranath Chakraborty, Hendrik Haehl, Biswajit Mondal, Amrita Chakraborty, Karin Jacobs, Paivi Laaksonen, Olli Ikkala, Thalappil Pradeep, Nonappa
Summary: 2D nanomaterials possess a range of mechanical, electrical, optical, and catalytic properties. The self-assembly of atomically precise noble nanoclusters offers a modular approach for the synthesis of new generation 2D materials. This study demonstrates the self-assembly of silver nanoclusters into large-area membranes with strong and elastic properties. These membranes can be easily transferred to different substrates and enable the detection of antibiotic molecules without substrate pretreatment.
Article
Chemistry, Multidisciplinary
Enrico Lavagna, Sebastian Salassi, Davide Bochicchio, Giulia Rossi
Summary: This study computationally investigates the colloidal aggregation of gold nanoparticles isotropically functionalized by a mixture of charged and hydrophobic ligands, and reveals that anisotropic aggregates with different topologies can be formed by varying the proportion of the two ligands.
Article
Physics, Applied
Jiajia Sun, Zongqian Shi, Mingjia Li, Shuang Chen, Mingjie Zhong, Xiaofeng Liu, Jingjie Sha, Shenli Jia
Summary: The use of microfluidic and magnetic field-assisted self-assembly allows for the patterning of colloidal magnetic-plasmonic nanoparticles in a controlled environment, opening up new possibilities for assembling complex structures.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Yue Wu, Yanqiong Yang, Yan Zhang, Liwei Dai, Wenhao Dong, Huibin He, Hao Li, Zhihong Nie, Yutao Sang
Summary: This study demonstrates a photo-induced self-assembly process of binary nanoparticles with complementary copolymer ligands, leading to the formation of high-yield clusters or linear structures of colloidal molecules. By varying the irradiation duration and mixing order, precise control of different structures can be achieved, offering various applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Anname Lourens, Anzel Falch, Daniel Otto, Rehana Malgas-Enus
Summary: Magnetic nanocatalysts are of interest due to their recyclability, affordability, and stability in a wide pH range. Cu and Ni coated Fe3O4 nanocomposites were designed and used for polymerization reactions to produce polystyrene encapsulated magnetic nanosystems. The obtained polymeric materials showed potential application as adsorbents for oil spills.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jeong Eun Park, Sei Jin Park, Augustine Urbas, Zahyun Ku, Jeong Jae Wie
Summary: In this study, a stepwise collective magnetic self-assembly method using periodic polymeric micropillar arrays is reported. The magnetic polarities of the micropillars are arranged by an external magnetic field, and long-range connectivity is achieved by increasing the magnetic flux density. The effects of geometric shape and spatial selectivity on magnetic self-assembly are also investigated.
Article
Chemistry, Multidisciplinary
Yawei Sun, Jiaqi Zhang, Feng Liu, Qilu Zhang
Summary: Rapid and scalable self-assembly of an amphiphilic 21-arm star copolymer, (polystyrene-block-polyethylene glycol)(21), in aqueous solution has been achieved using reverse solvent exchange procedure. The resulting nanoparticles show narrow size distribution, which is confirmed by transmission electron microscope (TEM) and nanoparticle tracking analysis (NTA). The kinetic-controlled self-assembly mechanism of the copolymers involves the star topology of the amphiphilic copolymer and deep quenching condition during phase separation.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Arixin Bo, Yawei Liu, Bjoern Kuttich, Tobias Kraus, Asaph Widmer-Cooper, Niels de Jonge
Summary: Self-assembly of nanoscale structures at liquid-solid interfaces plays a crucial role in industrial processes and natural phenomena. The conventional theory is oversimplified, and in situ observations using liquid-phase scanning transmission electron microscopy are required. It has been found that modifying the molecular coating of the substrate can control the self-assembly structures of nanoparticles.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Brian B. Lynch, Bryan D. Anderson, W. Joshua Kennedy, Joseph B. Tracy
Article
Chemistry, Physical
Laurel R. Rowe, Brian S. Chapman, Joseph B. Tracy
CHEMISTRY OF MATERIALS
(2018)
Article
Chemistry, Analytical
Tian Zhao, Megan A. Steves, Brian S. Chapman, Joseph B. Tracy, Kenneth L. Knappenberger
ANALYTICAL CHEMISTRY
(2018)
Article
Materials Science, Multidisciplinary
Sangchul Roh, Lilian B. Okello, Nuran Golbasi, Jameson P. Hankwitz, Jessica A-C Liu, Joseph B. Tracy, Orlin D. Velev
ADVANCED MATERIALS TECHNOLOGIES
(2019)
Article
Multidisciplinary Sciences
Jessica A. -C. Liu, Jonathan H. Gillen, Sumeet R. Mishra, Benjamin A. Evans, Joseph B. Tracy
Article
Materials Science, Multidisciplinary
Jessica A. -C. Liu, Benjamin A. Evans, Joseph B. Tracy
ADVANCED MATERIALS TECHNOLOGIES
(2020)
Article
Chemistry, Multidisciplinary
Jake Song, Mehedi H. Rizvi, Brian B. Lynch, Jan Ilaysky, David Mankus, Joseph B. Tracy, Gareth H. McKinley, Niels Holten-Andersen
Article
Chemistry, Multidisciplinary
Minjeong Ha, Gilbert Santiago Canon Bermudez, Jessica A. -C. Liu, Eduardo Sergio Oliveros Mata, Benjamin A. Evans, Joseph B. Tracy, Denys Makarov
Summary: This article introduces magnetic origami actuators that have the capability to sense their orientation and displacement, as well as detect their own magnetization state and readiness for folding. These actuators integrate photothermal heating and magnetic actuation, allowing for sequential folding and recovery.
ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Morgan Chandler, Brian Minevich, Brandon Roark, Mathias Viard, M. Brittany Johnson, Mehedi H. Rizvi, Thomas A. Deaton, Seraphim Kozlov, Martin Panigaj, Joseph B. Tracy, Yaroslava G. Yingling, Oleg Gang, Kirill A. Afonin
Summary: This research demonstrates the controlled assembly of 3D QD structures in cells using nucleic acids as programmable crosslinkers. The morphologies and functions of these structures were evaluated through various methods and experimental results, showcasing the potential therapeutic applications of QD assemblies in cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Mehedi H. Rizvi, Ruosong Wang, Jonas Schubert, William D. Crumpler, Christian Rossner, Amy L. Oldenburg, Andreas Fery, Joseph B. Tracy
Summary: This work investigates the properties and alignment effects of controllable gold nanorods in magnetic fields. Cationic polyethyleneimine-functionalized superparamagnetic nanoparticles are deposited on the surface of gold nanorods, and the magnetic alignment of nanorods is achieved by magnetic dipolar interactions. The experimental results demonstrate the potential for rotational manipulation of these nanorods in rotating magnetic fields. This research has important implications for further developments in nanophotonics applications.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Jake Song, Qingteng Zhang, Felipe de Quesada, Mehedi H. Rizvi, Joseph B. Tracy, Jan Ilavsky, Suresh Narayanan, Emanuela Del Gado, Robert L. Leheny, Niels Holten-Andersen, Gareth H. McKinley
Summary: Arrested soft materials exhibit slow stress relaxation in response to linear mechanical perturbations, but the microscopic origins of this relaxation are poorly understood. Through X-ray photon correlation spectroscopy, we studied the dynamics of a model associative gel system and found that the mean stress relaxation time is correlated to the quiescent superdiffusive dynamics of microscopic clusters during arrest. Small mechanical deformations can also induce intermittent avalanches, leading to a non-Gaussian spectrum of relaxation modes in stress relaxation measurements.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Brian B. Lynch, Andrew P. Kelliher, Bryan D. Anderson, Alexander Japit, Michael A. Spencer, Mehedi H. Rizvi, Mehmet F. Sarac, Veronica Augustyn, Joseph B. Tracy
Summary: Transition metal chalcogenide nanoparticles have been synthesized from Ni template nanoparticles using elemental sulfur and selenium precursors, resulting in various Ni sulfide and selenide phases. Voids formed through the Kirkendall effect, and trends relating precursor properties to product phases have been identified. The increase in nanoparticle size during conversion and potential application as electrocatalysts for the hydrogen evolution reaction have been demonstrated.
Article
Nanoscience & Nanotechnology
Prachi R. Yadav, Mehedi H. Rizvi, Bjoern Kuttich, Sumeet R. Mishra, Brian S. Chapman, Brian B. Lynch, Tobias Kraus, Amy L. Oldenburg, Joseph B. Tracy
Summary: The organization of plasmonic nanoparticles in shape-memory polymer films was studied for their coupling strength and polarization dependence. Significant polarization-dependent response was observed during stretching, which disappeared after shape recovery. The study also demonstrated the potential application of these materials as optical thermal history sensors.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Brian S. Chapman, Sumeet R. Mishra, Joseph B. Tracy
DALTON TRANSACTIONS
(2019)
Article
Nanoscience & Nanotechnology
Sumeet R. Mishra, Joseph B. Tracy
ACS APPLIED NANO MATERIALS
(2018)
