Article
Chemistry, Physical
Patrick Melix, Randall Q. Snurr
Summary: The study shows that a metal-organic framework MFU-4l can play an important role as a catalyst in the conversion of methane to methanol. Using density functional theory calculations, it is found that the highest energy barrier in the methane oxidation process is not the breaking of the C-H bond, but the activation of the iron center by N2O. Moreover, the potential energy landscape for C-H bond activation exhibits a large, high-energy plateau region, which differs from the traditional radical rebound mechanism.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jenna L. Mancuso, Carlo A. Gaggioli, Laura Gagliardi, Christopher H. Hendon
Summary: Catalytic ethylene dimerization for selective 1-butene formation is achieved by metal-organic frameworks (MOFs) with Ni-based catalytic sites. A competitive electronic spin configuration pathway is revealed to explain the selective formation of 1-butene in the highest performing MOF, suggesting a departure from traditional molecular catalyst design paradigms.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Kunyi Leng, Hiroshi Sato, Zhiyi Chen, Wei Yuan, Takuzo Aida
Summary: This study proposes a photochemical surgery method that combines top-down and bottom-up approaches to enable site-selective solubilization and crystallization of 1D MOFs. By using photoreactive MOFs and controlling the light conditions and material components, the precision synthesis of 1D multiblock MOFs with desired block lengths and sequences is achieved.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Mitsuhiko Morisue, Minami Nakamura, Yusuke Miyake, Yukiyasu Kashiwagi, Seiji Watase, Taiki Hoshino, Hiroyasu Masunaga, Shinichi Sakurai, Sono Sasaki
Summary: The antifreezing effect of central metal on porphyrin supercooled liquid and glass is investigated. The central metal enhances intermolecular interactions, increases viscosity, and slows crystallization process. The impact of the central metal on metalloporphyrins with specific chemical structures is discussed.
CRYSTAL GROWTH & DESIGN
(2023)
Review
Optics
Xiufang Chen, Xianglong Yang, Xuejian Xie, Yan Peng, Longfei Xiao, Chen Shao, Huadong Li, Xiaobo Hu, Xiangang Xu
Summary: SiC semiconductor is the focus of international research and an important material for China's carbon emission reduction. Shandong University has made significant progress in crystal growth, defect control, electrical properties, and device authentication of SiC crystals. The dislocation density and impurity concentrations have been greatly reduced, while the resistivity and performance of devices have been improved.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Davey C. Hoekstra, Bodine P. A. C. van der Lubbe, Tom Bus, Lanti Yang, Nadia Grossiord, Michael G. Debije, Albert P. H. J. Schenning
Summary: By controlling the sequence and rate of free-radical and cationic photopolymerization reactions, researchers can manipulate the phase separation in liquid crystal networks and tune the reflective color of structurally colored coatings. Conversely, the structural color can be used as a tool to monitor the degree of phase separation. This new photopolymerization procedure shows potential for structuring liquid crystal networks in three dimensions, allowing for the fabrication of liquid crystal polymer materials with programmable functional properties.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Analytical
Mikel Azkune, Igor Ayesta, Leire Ruiz-Rubio, Eneko Arrospide, Jose Luis Vilas-Vilela, Joseba Zubia
Summary: This study introduces a novel FERS approach based on HyC-mPOF, which enables high selectivity Raman measurements in a functionalized matrix by incorporating hydrogel only on the core of HC-mPOF. The coherence between the hydrogel components and Raman spectrum was continuously monitored and quantified using Principal Component Analysis, demonstrating the feasibility of the presented HyC-mPOF platform through measurements with high and low affinity target molecules.
Article
Biochemistry & Molecular Biology
Olha Bazaka, Karthika Prasad, Igor Levchenko, Mohan V. Jacob, Kateryna Bazaka, Peter Kingshott, Russell J. Crawford, Elena P. Ivanova
Summary: Exposure to plasma jet treatment was found to induce changes in the surface chemistry and topography of Melaleuca alternifolia polymer coatings, affecting their ability to retard microbial attachment. Treatment for less than 60 seconds was sufficient to impact the coatings' antimicrobial performance, with lower power coatings showing temporary improvement in bioactivity against Staphylococcus aureus cells after treatment.
Article
Chemistry, Multidisciplinary
Linyi Li, Yantao Yu, Peng Li, Jinxin Liu, Lihan Liang, Luyang Wang, Yu Ding, Xiaocang Han, Jiamin Ji, Shengli Chen, Dehui Li, Pan Liu, Shunping Zhang, Mengqi Zeng, Lei Fu
Summary: Perovskite materials have attracted significant attention due to their diverse species and remarkable physical properties. Ultrathin perovskites, compared to bulk crystals, offer more composition options. By constructing an oriented solvent microenvironment, ultrathin perovskites with alterable composition and structure can be synthesized.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qingshan Yang, Yajie Yang, Qianyu Gong, Jinshu Li, Hwi Je Woo, Jingjie Niu, Minwoo Kim, Sungjoo Lee, Young Jae Song
Summary: In this study, single-crystalline pyramid-shaped TiCx particles were synthesized using a biphase diffusion synthesis method. The growth mode of the particles and their application in photodevices were investigated. The results showed that the TiCx particles exhibited a dendritic growth mode and could enhance the photocurrent through localized surface plasmonic resonance effect.
Article
Chemistry, Multidisciplinary
Yunae Cho, Hye Ri Jung, Yeon Soo Kim, Yejin Kim, Joohee Park, Seokhyun Yoon, Yousil Lee, Miyeon Cheon, Se-young Jeong, William Jo
Summary: Organic-inorganic hybrid perovskites have gained attention as a promising material for optoelectronic applications. Single crystal structures of perovskites offer better stability and lower trap density compared to polycrystalline thin films. The use of inverse temperature crystallization at low temperatures shows potential for growing sizable CH3NH3PbBr3 single crystals with high quality for optoelectronic devices.
Article
Multidisciplinary Sciences
Chengjun Kang, Kuiwei Yang, Zhaoqiang Zhang, Adam K. Usadi, David C. Calabro, Lisa Saunders Baugh, Yuxiang Wang, Jianwen Jiang, Xiaodong Zou, Zhehao Huang, Dan Zhao
Summary: Resolving the single-crystal structures of two-dimensional covalent organic frameworks (2D COFs) is a challenging task. In this study, the authors investigate the growth process of 2D COFs by tracing growth intermediates and identify two different growth mechanisms. This enables the growth and structure determination of micron-sized 2D single-crystalline COFs.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Chunming Liu, Susil Baral, Kai Gu, Xianwen Mao, Peng Chen
Summary: Synthetic polymers are heterogeneous due to the asynchronous and nonequilibrium kinetics of multistep polymerization reactions. Real-time monitoring of single-chain polymer growth is important for understanding polymerization mechanisms and applications, but presents challenges distinct from biopolymerizations.
TRENDS IN CHEMISTRY
(2021)
Article
Materials Science, Coatings & Films
Sina Mirzai Tavana, Mehdi Hojjati, Andre C. Liberati, Christian Moreau
Summary: This paper investigates the fabrication and performance evaluation of a solid particle erosion resistant layer on polymer-based composites. Coating materials including tungsten carbide-cobalt, martensitic chromium stainless steel, and alumina-titania were deposited using air plasma spray (APS) to enhance erosion resistance. A stainless steel mesh was incorporated during composite fabrication to protect the composite fibers during grit blasting and thermal spraying, improving the adhesion between coatings and substrate. Tests were conducted to assess mechanical and tribological properties. Results showed that coating bonding strength significantly improved with identified processing parameters. Coating materials with brittle behavior exhibited higher erosion resistance on stiff substrates, while ductile coatings were more suitable for less stiff substrates like carbon fiber reinforced composites.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Aida Alaei, Kai Zong, Kaustubh Asawa, Tseng-Ming Chou, Alejandro L. Briseno, Chang-Hwan Choi, Stephanie S. Lee
Summary: Nanoconfinement is a powerful strategy to control crystal orientation and morphology of organic semiconductor crystals. The relationship between scaffold dimensionality and crystal dimensionality affects crystal growth habits and orientation control. In some cases, the crystal shape can be manipulated within nanoporous scaffolds to form complex structures.
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)