Article
Polymer Science
Lei Tian, Yanxing Liu, Dai Wang, Jiji Tan, Yankun Xie, Bei Li, Qiuyu Zhang, Caizhen Zhu, Jian Xu
Summary: This article reports on a swelling-induced self-assembly method for controlled colloidal clusters using a click seeded emulsion polymerization. The driving force is liquid bridging, and colloidal clusters with tunable structures can be prepared by regulating the formation of liquid bridges. Moreover, it is possible to transform patchy particles into clusters by changing the seed concentrations.
Article
Physics, Multidisciplinary
Alex Hamill, Brett Heischmidt, Egon Sohn, Daniel Shaffer, Kan-Ting Tsai, Xi Zhang, Xiaoxiang Xi, Alexey Suslov, Helmuth Berger, Laszlo Forro, Fiona J. Burnell, Jie Shan, Kin Fai Mak, Rafael M. Fernandes, Ke Wang, Vlad S. Pribiag
Summary: Research shows that in few-layer NbSe2, there is a superconducting state with a two-fold rotational symmetry different from the lattice's three-fold symmetry, attributed to Ising spin-orbit coupling. Both the magnetoresistance and critical field exhibit this two-fold symmetry in the superconducting state.
Article
Chemistry, Physical
Ting Zhang, Xilong Xu, Baibiao Huang, Ying Dai, Yandong Ma
Summary: This study proposes a design principle for realizing 2D spontaneous valley polarization based on inversion symmetric single-layer lattices and demonstrates its feasibility in a specific material. Additionally, the study discovers an exotic out-of-plane ferroelectricity phenomenon.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Chemistry, Organic
Prachi Gupta, Venkataramanarao G. Anand
Summary: This study represents the first synthesis of pyrrole-free antiaromatic heptaphyrin, achieved through acid-assisted condensation reaction and oxidative coupling. The macrocycles exhibit a slightly bent structure and undergo reversible oxidation between different states.
Article
Chemistry, Multidisciplinary
Meiling Qi, Yi Zhou, Yongkang Lv, Weiben Chen, Xi Su, Ting Zhang, Guolong Xing, Gang Xu, Osamu Terasaki, Long Chen
Summary: In this study, two different layered 2D conductive metal-organic frameworks were constructed using a flexible and nonplanar tetraphenylbenzene-based ligand. The material with a kagome structure exhibited higher conductivity and the morphology and topology could be modulated by the addition of ammonium hydroxide.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Jans Henke, Mert Kurttutan, Jorrit Kruthoff, Jasper van Wezel
Summary: Recent formal classifications of crystalline topological insulators have predicted new topological invariants, but have not provided a method for calculating their values. This study demonstrates that a specific set of concentric Wilson loops and line invariants can yield the values of all topological invariants in two-dimensional systems with pure rotation symmetry in class AII. New invariants related to higher-order topology and corner charges have been discovered through this analysis.
Article
Chemistry, Physical
Hyejin Kwon, Koji Osawa, Jin Gyu Seol, Siheon Sung, Doseok Kim, Yung Sam Kim
Summary: The coupling between the symmetric and antisymmetric OD stretch modes of monomeric D2O in CHCl3 is investigated using polarization-dependent two-dimensional infrared (2D IR) spectroscopy. The relationship between the local modes' and the exciton states' parameters is systematically studied, and the mean coupling between the modes is accurately evaluated. The effect of local-mode frequency correlation on the resulting exciton-state frequency correlation and the spectral shape of the IR spectra is also investigated.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Xiaodan Yin, Wei Zheng, Haifeng Tang, Peigen Zhang, ZhengMing Sun
Summary: In this study, 1T-MoS2/Ti3C2Tz 2D/2D heterostructures were synthesized as new electrode materials through a simple hydrothermal method. The existence of heterojunctions was confirmed by XPS and TEM analysis. The heterostructures exhibited superior electrochemical performance in a water-in-salt electrolyte, with an optimized ratio of 1T-MoS2/Ti3C2Tz at 2:1, achieving a specific capacitance of 250 F g(-1), a capacitance retention of 82.3% after 5000 cycles, and an average coulombic efficiency of 99.96%. Assembled into symmetric supercapacitors, it achieved an energy density of 12.0 W h kg(-1) at a power density of 139.9 W kg(-1), with a capacitance retention of 82.6% and an average coulombic efficiency of 99.95% after 5000 cycles at 5 A g(-1). This research is expected to stimulate further studies on the wide application of 2D/2D heterostructures in supercapacitors.
Review
Materials Science, Multidisciplinary
Yingxin Ma, Yi Zong, Huiling Yin, Hongtao Lin, Shuhai Chen, Xue-Dong Wang
Summary: Organic crystals can serve as a medium to form 2D optical waveguides and be applied to ultra-compact optoelectronic devices, which is crucial for achieving optical waveguides at micro/nanoscale.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Guo-Guo Weng, Ben-Kun Hong, Song-Song Bao, Yujie Wen, Lan-Qing Wu, Xin-Da Huang, Jia-Ge Jia, Ge-Hua Wen, Shu-Hua Li, Luming Peng, Li-Min Zheng
Summary: This study introduces a new strategy for the generation of superhelices of 1D CPs by introducing flexible cyclohexyl groups on the side chains. This may lead to a new and general route to the hierarchical assembly and synthesis of helical CP materials.
Article
Chemistry, Multidisciplinary
Wei Yang, Meng Xu, Ke-Ying Tao, Ji-Hong Zhang, Di-Chang Zhong, Tong-Bu Lu
Summary: This study demonstrates the successful construction of 2D/2D heterojunctions for photocatalytic hydrogen evolution by employing an in situ growth method. The optimized catalyst exhibits excellent performance with significantly higher hydrogen yield compared to traditional catalysts and comparable to state-of-the-art catalysts. The enhanced photocatalytic performance is attributed to the intimate 2D/2D interface between P-CdS and Ni-MOLs.
Article
Computer Science, Artificial Intelligence
Hanlin Mo, Hongxiang Hao, Hua Li
Summary: This paper focuses on deriving blur moment invariants and proposes a new method to determine the invariance of existing moment invariants to N-fold symmetric blur. It is found that five Hu moment invariants are naturally invariant to N-fold symmetric blur. The experiments show that these five Hu moment invariants outperform some widely used blur moment invariants and non-moment image features in image retrieval, classification, and template matching.
PATTERN RECOGNITION
(2021)
Article
Chemistry, Multidisciplinary
Lina Hua, Huaixi Chen, Shiguo Han, Haojie Xu, Lei Lu, Liwei Tang, Beibei Wang, Junhua Luo, Zhihua Sun
Summary: By confining the secondary dimethylammonium (DMA) cation in a distorted perovskite cavity, a new 2D Ruddlesden-Popper metal halide perovskite of (i-BA)(2)(DMA)Pb2Br7 was assembled, showing effective photodetection behaviors with notable detectivity, high responsivity, and a large switching ratio. The properties of this perovskite result from its low dark current and strong in-plane photoresponse, providing insights for exploring photosensitive candidates in the family of organic-inorganic hybrid perovskites and high-performance devices.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jiahao Li, Guinan Chen, Chunhong Chen, Yuanyuan Lou, Zhihao Xing, Tao Zhang, Chengtao Gong, Yongwu Peng
Summary: In this study, two new two-dimensional (2D) covalent organic frameworks (COFs), COF-TA and COF-DP, were synthesized. These COFs exhibit an unconventional kgm topology and excellent photothermal conversion capabilities, especially for COF-DP with its unique structural motif and photosensitive properties, thus showing promising applications in photothermal imaging.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Liang Yan, Manoj K. Jana, Peter C. Sercel, David B. Mitzi, Wei You
Summary: The study presents a new type of 2D hybrid perovskites with a unique combination of chirality and alkyl-aryl functionality, determined by noncovalent intermolecular interactions in their crystal structures. The mixed-cation perovskites exhibit a circular dichroism distinct from purely chiral cation analogues, providing a new avenue for tuning the chiroptical properties of known chiral perovskites. Mixing chiral cations with achiral cations may offer a potential way to tailor the spin-based properties in 2D hybrid perovskites.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Editorial Material
Chemistry, Multidisciplinary
Jay S. Siegel
NATURE REVIEWS CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Xiaoqi Tian, Jun Xu, Kim K. Baldridge, Jay S. Siegel
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Hong-Bing Liu, Gregory H. Imler, Kim K. Baldridge, Robert D. O'Connor, Jay S. Siegel, Jeffrey R. Deschamps, Carole A. Bewley
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Toxicology
Gentao Li, Ruicong Ma, Yufeng Xing, Jing Wei, Yajuan Bi, Caiyu Li, Hui Xiong, Kim K. Baldridge, Jianhui Huang, Jay S. Siegel, Youcai Zhang
TOXICOLOGY LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Xiaolong Fu, Yonggang Zhen, Zhenjie Ni, Yang Li, Huanli Dong, Jay S. Siegel, Wenping Hu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Medicinal
Johannes Seibel, Manfred Parschau, Karl-Heinz Ernst
Article
Chemistry, Multidisciplinary
Tanya K. Ronson, Yujia Wang, Kim Baldridge, Jay S. Siegel, Jonathan R. Nitschke
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Medicinal
Brett C. Bookser, Quyen-Quyen Do, Yongsak Sritana-Anant, Kim K. Baldridge, Jay S. Siegel
Summary: The study tested the polar-p effect on tetrazoles in medicinal chemistry, analyzing the impact on different compounds in varying environments and exploring the trend with dielectric constants. Although the effect is small in terms of energy, it may have a statistically significant impact on the pharmacological profile of tetrazoles.
JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tianjian Guo, Ansu Li, Jun Xu, Kim K. Baldridge, Jay Siegel
Summary: Chiral carbon nanomaterials, represented by PIC, serve as a fundamental building block for creating supramolecular chiral carbon materials with symmetrical structures. The synthesis, resolution, and characterization of PICs, including evidence for columnar stacking in solution and in the crystal, have been successfully achieved through comparison of spectroscopic data with theoretical models.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Multidisciplinary Sciences
Tobias Duerr-Mayer, Danye Qiu, Verena B. Eisenbeis, Nicole Steck, Markus Haener, Alexandre Hofer, Andreas Mayer, Jay S. Siegel, Kim K. Baldridge, Henning J. Jessen
Summary: The researchers introduced a general method for synthesizing ultraphosphates, challenging the anti-branching rule. They provided evidence for the stability of ultraphosphates and revealed their role in phosphorylation.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yujia Wang, Michel Rickhaus, Olivier Blacque, Kim K. Baldridge, Michal Juricek, Jay S. Siegel
Summary: A simple abiological host-guest system demonstrates racemase activity with catalytic rate enhancements of 10(4) without employing traditional functional groups. Cooperative weak interactions enhanced through shape-complementarity between the catalyst active site and the reaction transition state drive this activity, suggesting that shape selectivity arising from cooperative dispersive forces is sufficient for the emergence of a catalytic system with an enzyme-like thermodynamic profile.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Mengsi Lu, Jun Xu, Kim K. Baldridge, Jay S. S. Siegel
Summary: A general synthetic approach for halogenated tetraaryl-ammonium salts has been developed and demonstrated using crystallography. Bromide ammonium salts were used as common synthetic intermediates and coupled with boronic acids to achieve a simplified arylation strategy. The absolute configuration of enantiopure spiro-bicarbazoliums was determined by comparing computational and experimental electronic circular dichroism (ECD) spectra.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Organic
Ansu Li, Jun Xu, Kim K. Baldridge, Jay S. Siegel
Summary: In this study, four chiral N-heterocyclic monoindenocorannulenes were synthesized via tandem Suzuki-aryl-aryl coupling and C-Cl activated ring closure reactions. The UV-Vis, fluorescence, and CV properties of these compounds were investigated. Enantiomer resolution was achieved using chiral stationary phase HPLC, and the absolute configurations were determined by comparing experimental and quantum mechanically predicted ECD spectra.
Article
Chemistry, Multidisciplinary
Bokai Xu, Tianjian Guo, Jay Siegel
Summary: A robust, mild, and inexpensive synthetic route for mono-halogenated corannulene is presented, along with a robust method for purifying and analyzing sym-pentachlorocorannulene from the ICl halogenation of corannulene.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Organic
Xiaoqi Tian, Suchaya Chaiworn, Jun Xu, Nicolas Vanthuyne, Kim K. Baldridge, Jay S. Siegel
Summary: A group of thiophene fused indenocorannulenes (TFICs) were synthesized and characterized, with emission wavelengths compared and a bowl-inversion activation barrier determined, showing diverse emission colors and configurational stability.
ORGANIC CHEMISTRY FRONTIERS
(2021)