Article
Chemistry, Multidisciplinary
Keyang Yin, Jichao Zhang, Pengyao Xing, Honguang Li
Summary: Compared to organic counterparts, chiral self-assembly of nanomaterials is more persistent to kinetic factors, making dynamic modulation of self-assembly and functions a challenge. This study demonstrates that alkylated, chiral polymer dots (c-PDs) can self-assemble into highly ordered structures with adaptable chirality in different solvent environments. The c-PDs exhibit various self-assembly modalities, including nanohelices, liquid crystals, monolayers, and microribbons, with chirality transfer and ordered packing. This work expands the application of quantum dot ordered self-assembly with adaptiveness to kinetic factors.
Article
Polymer Science
Zichao Deng, Yalan Sun, Song Guan, Aihua Chen
Summary: Polymerization-induced self-assembly (PIHSA) is a convenient and efficient method to produce polymeric particles with anisotropic morphologies, and it has attracted wide attention. In this study, twisted ribbons were fabricated via PIHSA incorporating azobenzene based on poorly controlled reversible addition-fragmentation chain transfer (RAFT). The formation mechanism of the twisted ribbons and the role of broad molecular weight distribution and supramolecular chirality were systematically studied, enriching the methods of controlling the morphologies of LC polymer particles and providing insights into the mechanism of PIHSA.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Govind P. Maurya, Deepak Verma, Aloka Sinha, Luc Brunsveld, V Haridas
Summary: This study demonstrates the synthesis of simple and tunable hydrophobically driven chiral functional assemblies of diacetylene cored pseudopeptides. The chiral appended amino acid elements and the hydrophobic dialkyne core play important roles in the self-assembly and aggregation induced emission properties of these materials. Moreover, these supramolecular materials show promising applications in inducing chirality into non-chiral liquid crystal matrices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Rebecca T. Graf, Kevin Tran, Marina Rosebrock, Hadir Borg, Jakob Schlenkrich, Franziska Luebkemann-Warwas, Franz Renz, Dirk Dorfs, Nadja C. Bigall
Summary: Cadmium chalcogenide nanoplatelets have a high affinity to self-assemble into ordered stacks from organic solvents through the addition of polar antisolvents. In this study, a new synthesis route is introduced to directly self-assemble the nanoplatelets into stacks in aqueous media by adding non-polar antisolvents. The mechanism of stacking and possible driving forces are analyzed using various measurements.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Friedrich Schwotzer, Jacob Horak, Irena Senkovska, Elke Schade, Tatiana E. Gorelik, Philipp Wollmann, Mai Le Anh, Michael Ruck, Ute Kaiser, Inez M. Weidinger, Stefan Kaskel
Summary: Clean air is crucial for human health, and the development of advanced materials for capturing toxic molecules is necessary. This study focuses on a metal-organic framework material that can be assembled into hierarchical structures, leading to enhanced adsorption capacity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Yutao Sang, Minghua Liu
Summary: This article discusses the importance of using asymmetry to manipulate molecular-level devices and hierarchical functional materials, focusing on how chirality can be utilized to design and evolve highly ordered and complex nanostructures through self-assembly, as well as the future prospects of chiral nanostructures.
Article
Chemistry, Multidisciplinary
Wenjuan Wang, Tong Liu, Ting Zhao, Di Sun, Hongguang Li, Pengyao Xing, Xia Xin
Summary: It is shown that when water-soluble Ag-9-cored nanoclusters (Ag-9-NC) are confined in crowded colloids, they self-assemble into ultra-long, flexible and photoluminescent ribbons. The ribbons contain rectangularly organized columns of Ag-9-NCs and can form bundled and branched structures. The high viscosity/elasticity of the colloids weakens the sedimentation of the ribbons, resulting in the formation of an interesting class of inorganic-organic composite materials.
Article
Chemistry, Physical
Qingsong Xu, Chunyang Yu, Lingsheng Jiang, Yuling Wang, Feng Liu, Wenfeng Jiang, Yongfeng Zhou
Summary: Hierarchical bishell capsules (BCs) with ultrathin lamellar phases have been prepared through a coacervate-assisted polymerization-induced self-assembly (CAPISA) method, which combines liquid-liquid phase separation (LLPS) with polymerization-induced self-assembly (PISA). The CAPISA method allows for the one-pot and scalable preparation of BCs in a bottom-up sequence, and the self-assembled structure and dynamic formation process of BCs have been revealed. CAPISA shows great potential in fabricating biomimetic polymer materials with higher structural complexity and sophisticated functions.
Review
Chemistry, Multidisciplinary
Qianqian Wang, Wen Niu, Shixuan Feng, Jun Liu, Huan Liu, Qianqian Zhu
Summary: Cellulosenanocrystal (CNC) suspensions can self-assemble into chiral nematic liquid crystals, leading to the development of versatile optical materials. However, the scale-up production and commercial success of chiral nematic CNC superstructures face significant challenges due to the trade-off between uniform structure and rapid self-assembly. This review focuses on accelerating chiral nematic CNC assembly and promoting long-range oriented superstructures.
Article
Chemistry, Multidisciplinary
Soon Mo Park, Won-Geun Kim, Junkyu Kim, Eun-Jung Choi, Hyoungsoo Kim, Jin-Woo Oh, Dong Ki Yoon
Summary: Biomacromolecules are likely to exhibit specific collective behavior through self-assembly in the medium, although direct demonstration of this behavior in dynamic systems is limited. A study on the drying process of M13 droplet was conducted, successfully simulated using a doctor blade coating method, showing potential for using biomacromolecules as a scaffold for multi-functional chiral structures.
Article
Chemistry, Multidisciplinary
Tian Wang, Weichao Chen, Qingda Liu, Wei Wang, Yinming Wang, Biao Wu, Wenxiong Shi, Yunqing Zhu, Peilei He, Xun Wang
Summary: Tailoring the spatial distribution of ligands on polyoxometalates has led to the formation of subnanometer rhombic dodecahedral building blocks, which self-assemble into microscale rhombic dodecahedral POM assemblies. These assemblies exhibit excellent catalytic performance in the cycloaddition of CO2 with epoxides.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jiwei Min, Jiayu Liu, Zixuan Wang, Yuefei Wang, Yu Zhou, Liwei Zhang, Jiaxing Zhang, Yuhe Shen, Qing Li, Rongxin Su, Wei Qi
Summary: This study reveals that short peptides can form various chiral nanostructures mediated by metal ions and highlights their potential applications in catalysis and antimicrobials.
Article
Materials Science, Multidisciplinary
Austin Hubley, Amina Bensalah-Ledoux, Bruno Baguenard, Stephan Guy, Benjamin Abecassis, Benoit Mahler
Summary: Chiral halide perovskite nanocrystals have applications in next-generation optoelectronic devices due to their interaction with polarized light. Control over the circular dichroism (CD) and circularly polarized luminescence (CPL) can be achieved through careful selection of chiral organic surface ligands. In this study, colloidal perovskite nanoplatelets were synthesized to exhibit room temperature CPL, and the precise ratio of chiral and achiral ligands was shown to be critical for high CPL intensity. The competitive binding of these ligands was investigated using H-1 NMR, and a linear correlation between CPL and CD was demonstrated. Additionally, the impact of subtle differences in ligand structure on the resulting nanoplatelets CD signal was explored.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Liao-Yuan Yao, Lin Qin, Ziyong Chen, Jonathan Lam, Vivian Wing-Wah Yam
Summary: This study explores the importance and mechanism of chiral self-assembly and self-sorting in gold cluster systems. By introducing ligands with different chirality, unique chiral gold clusters with specific shapes were successfully synthesized. Both homochiral and heterochiral self-sorting processes were observed, as well as the transfer of chirality from ligands to gold clusters, resulting in changes in symmetry.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Chantalle J. Krajewska, Alexander E. K. Kaplan, Matthias Kick, David B. Berkinsky, Hua Zhu, Tara Sverko, Troy Van Voorhis, Moungi G. Bawendi
Summary: Using different evaporation rates of the dispersion solvent, controlled assembly of CsPbBr3 nanoplatelets was achieved. Electron microscopy, X-ray scattering, and diffraction confirmed the superlattice structures in both the face-down and edge-up configurations. Polarization-resolved spectroscopy revealed significantly polarized emission in the edge-up superlattices compared to the face-down counterparts. Variable temperature X-ray diffraction revealed a uniaxial negative thermal expansion in ultrathin nanoplatelets, explaining the anomalous temperature dependence of the emission energy. Additional structural aspects were investigated by multilayer diffraction fitting, showing a decrease in superlattice order and an expansion of the organic sublattice and lead halide octahedral tilt with decreasing temperature.
Article
Chemistry, Multidisciplinary
Jiawen Liu, Lilian Guillemeney, Benjamin Abecassis, Laurent Coolen
Article
Chemistry, Multidisciplinary
Karin El Rifaii, Henricus H. Wensink, Thomas Bizien, Jean-Christophe P. Gabriel, Laurent Michot, Patrick Davidson
Article
Multidisciplinary Sciences
Claire Meyer, Christophe Blanc, Geoffrey R. Luckhurst, Patrick Davidson, Ivan Dozov
Article
Physics, Multidisciplinary
Claire Meyer, Patrick Davidson, Doru Constantin, Vassili Sergan, Daniel Stoenescu, Anamarija Knezevic, Irena Dokli, Andreja Lesac, Ivan Dozov
Summary: The study investigates the structural and electro-optic properties of LC phases of a bent-shaped dimer, finding that the biaxial smectic-A phase SmA(b) exhibits a significant electro-optic response, which could be potentially utilized in electro-optic devices requiring fast switching.
Article
Chemistry, Multidisciplinary
Santanu Jana, Rodrigo Martins, Elvira Fortunato
Summary: An exceptional feature of one-dimensional threadlike assemblies of a four-monolayer colloidal CdSe nanoplatelet-based thin-film transistor is reported. The study shows that the length of the threads affects the mobility, with the film containing the longest threads exhibiting the highest conductivity and electron mobility. The mobility trends are driven by the lower defects in the longer threads, resulting in less loss of electron hopping.
Article
Chemistry, Physical
Shrabani Panigrahi, S. K. Mukaddar, Santanu Jana, Saurabh Ghosh, Jonas Deuermeier, Rodrigo Martins, Elvira Fortunato
Summary: This study demonstrates that the addition of an ultrathin layer of ZnOS between SnO2 and halide perovskite film can effectively passivate defects and enhance the efficiency of perovskite solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Fella Saci, Sophie L. K. W. Roelants, Wim Soetaert, Niki Baccile, Patrick Davidson
Summary: This study investigates the self-assembly and liquid-crystalline behavior of sophorolipids at high concentrations in water using polarized-light microscopy and X-ray scattering. Some compounds exhibit lamellar or hexagonal columnar mesophases, with the lamellar phase structure being almost fully interdigitated. Moreover, certain compounds display thermotropic liquid-crystalline behavior in pure water or aqueous mixtures. Additionally, the alignment of small domains in the lamellar phase can be achieved by applying an AC electric field. These findings provide insights into the potential industrial applications and biological functions of sophorolipids.
Article
Chemistry, Physical
Lilian Guillemeney, Laurent Lermusiaux, Patrick Davidson, Austin Hubley, Stefano Pierini, Debora Pierucci, Gilles Patriarche, Bruno Canut, Emmanuel Lhuillier, Benoit Mahler, Benjamin Abecassis
Summary: In this study, ultrathin indium sulfide In2S3 nanoribbons with giant aspect ratio were synthesized using a solvothermal method. The nanoribbons exhibited n-type semiconductor unipolar behavior and gelation properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Claire Meyer, Patrick Davidson, Tatiana Sergan, Vassili Sergan, Daniel Stoenescu, Anamarija Knezevic, Irena Dokli, Andreja Lesac, Ivan Dozov
Summary: The synthesis of bent-shaped mesogens and mesogenic dimers has brought new insights into the field of liquid crystals. A recent study focused on the observation of a biaxial SmA phase and its electro-optic effect, which was interpreted as a biaxial Freedericksz transition. Through dielectric and birefringence techniques, the elastic constants were measured, revealing the presence of domains with opposite tilt and elliptical defect loops.
Article
Chemistry, Multidisciplinary
Karin El Rifaii, Henricus H. Wensink, Ivan Dozov, Thomas Bizien, Laurent J. Michot, Jean-Christophe P. Gabriel, Josef Breu, Patrick Davidson
Summary: Bottom-up strategies for nanomaterial synthesis often rely on the self-assembly of anisotropic colloidal particles. In this study, the self-assembly of fluorohectorite clay mineral in water was investigated, leading to the formation of stable colloidal stacks of single-layer clay sheets with unique mechanical properties. A theoretical model was proposed to explain the dependence of the stacking period on dispersion concentration and ionic strength, providing insights into the kinetic stability of these colloidal stacks.
Article
Chemistry, Multidisciplinary
Rodrigo Ferreira, Monirul Shaikh, Suresh Kumar Jakka, Jonas Deuermeier, Pedro Barquinha, Saurabh Ghosh, Elvira Fortunato, Rodrigo Martins, Santanu Jana
Summary: Halide perovskite phototransistors with high mobility and good optical figures of merit have been achieved using FAPbBr(3) perovskite quantum dots (QDs) as the active layer. The dark hole mobility is measured to be 14.2 cm(2) V-1 s(-1) at ambient atmosphere, and a detectivity of approximately 10^16 Jones is achieved, which is a record for halide perovskite nanocrystals. Simple A-site salt (FABr) treatments are used to improve charge transfer in high-quality devices.
Article
Crystallography
Claire Meyer, Patrick Davidson, Geoffrey R. Luckhurst, Irena Dokli, Anamarija Knezevic, Andreja Lesac, Daniel A. Paterson, Rebecca Walker, John M. D. Storey, Corrie T. Imrie, Ivan Dozov
Summary: The twist-bend nematic (N-TB) phase as a phase of bent-shaped molecules has attracted much attention due to its unique structural characteristics and properties. However, the understanding of its main features and elastic properties is still limited. This is mainly because of the difficulty in growing large single domains of the N-TB phase and the pseudo-layered structure that restricts certain distortions. Therefore, experimental measurements and theoretical models need further improvement to better understand this phase.
Article
Chemistry, Multidisciplinary
Lina Cherni, Karin El Rifaii, Henricus H. Wensink, Sarah M. Chevrier, Claire Goldmann, Laurent J. Michot, Patrick Davidson, Jean-Christophe P. Gabriel
Summary: We have achieved highly ordered restacking of two-dimensional phosphatoantimonic materials through a simple change of pH using alkaline bases. This method avoids the typical turbostratic disorder observed in traditional nanosheet stacking, making it crucial for controlled deposition in complex integrated structures.
Article
Chemistry, Physical
Karin El Rifaii, Henricus H. Wensink, Claire Goldmann, Laurent Michot, Jean-Christophe P. Gabriel, Patrick Davidson
Summary: Aqueous suspensions of nanosheets can form a periodic stack of membranes, with color tuning achieved by adding different molecular weights of PEO. It is crucial to consider the particulate nature of nanosheet-laden membranes when explaining the dependence of the period.
Article
Chemistry, Multidisciplinary
Karin El Rifaii, Patrick Davidson, Laurent Michot, Cyrille Hamon
Summary: By synthesizing gold nanoparticles onto clay nanosheets, liquid-crystal materials were successfully imparted with the plasmonic properties of metal nanoparticles, resulting in nematic nanocomposite suspensions. These colloids exhibit distinctive plasmonic structural colors and can be aligned by an electric field.
CHEMICAL COMMUNICATIONS
(2021)