Article
Materials Science, Multidisciplinary
Bin Mu, Jian Chen, Keyang Chen, Chunxiu Zhang, Dongzhong Chen
Summary: This study successfully designed liquid-crystalline dendrimers with donor triphenylene as the peripheral discotic mesogen and acceptor fullerene as the dendrimer core, achieving heterojunction ambipolar charge-transport columnar materials. The resulting donor-acceptor segregated columnar materials exhibit ambipolar charge-transport behavior with high mobilities for both holes and electrons.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Asmita Shah, Dharmendra Pratap Singh, Benoit Duponchel, Freddy Krasisnski, Abdelylah Daoudi, Sandeep Kumar, Redouane Douali
Summary: The charge transport in discotic mesogens based on triphenylene core was investigated using the time-of-flight method. The hole mobility was found to decrease with increasing the number of carbon atoms in the alkyl chain attached to the triphenylene core, following an exponential relationship. Dielectric measurements revealed a correlation between molecular ordering and alkyl chain length, impacting hole mobility and permittivity. The potential applications of these compounds in opto-electronics as organic semiconductors are noted, despite the challenge of poor conductivity.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Dharmendra Pratap Singh, Asmita Shah, Indu Bala, Vadivel Marichandran, Santanu Kumar Pal, Abhishek Kumar Srivastava, Sandeep Kumar
Summary: This article presents the charge transport and organic electronic applications of naphthophenanthridine derivatives and a dimer composed of pentaalkynylbenzene and triphenylene discotic liquid crystals. The investigated compounds exhibit high ambipolar charge carrier mobility, making them suitable for fabricating organic semiconducting electronic devices.
Article
Chemistry, Physical
Paulina Rybak, Adam Krowczynski, Jadwiga Szydlowska, Damian Pociecha, Ewa Gorecka
Summary: A new type of 3D columnar phase with a large unit cell and Fddd lattice is reported, resulting from the arrangement of helical columns of opposite chiralities into a triangular lattice. The fluorescence properties of the studied materials can be easily tuned by modifying the molecular structure.
Article
Materials Science, Multidisciplinary
Xiao-Peng Cheng, Xiao-Pin Xiong, Jiang-Wei He, Wen-Hao Yu, Chun Feng, Hai-Liang Ni, Ping Hu
Summary: Nine new C-3-symmetric 2,7,12-tris(decanoxy)-3,8,13-tris(alkoxy)truxene discogens were synthesized and exhibited a wide mesogenic temperature range and high thermal stability. The melting and clearing temperatures showed a pattern with the length of the alkoxy chain. In solution, the truxenes self-aggregated through pi-pi facial interactions and formed a hexagonal geometry at the liquid-solid interface.
Article
Chemistry, Physical
Marichandran Vadivel, T. Aravinda, K. Swamynathan, B. Vinay Kumar, Sandeep Kumar
Summary: This study presents the synthesis and characterization of a novel liquid crystalline phenanthridine derivative and its ability to bind with DNA, with the intrinsic binding constants similar to the gold standard compound ethidium bromide. It is the first report on DNA binding studies of discotic mesogens in the field of liquid crystals, providing a new direction for research in this area.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Indu Bala, Joydip De, Santosh Prasad Gupta, Upendra Kumar Pandey, Santanu Kumar Pal
Summary: The study explores hydrogen-bonded C-3 symmetrical discotic liquid crystals forming segregated columnar assembly, with particular focus on a new heptazine core for developing functional supramolecular materials. Among the complexes studied, some demonstrate efficient ambipolar charge transport, showing potential for commercial organic electronics applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Mechanics
Leia Fan, Eric Lee
Summary: This study theoretically investigates the diffusiophoresis of a perfectly conducting droplet-like liquid metal in electrolyte solutions, focusing on the chemiphoresis component. It is found that a conducting droplet always moves up the chemical gradient toward the region with a higher concentration of ions in chemiphoresis, without being affected by the Marangoni effect or Maxwell traction.
Article
Multidisciplinary Sciences
Tianyi Yao, Ziga Kos, Qi Xing Zhang, Yimin Luo, Edward B. Steager, Miha Ravnik, Kathleen J. Stebe
Summary: Topological defects on rotating colloids in nematic liquid crystals form far-from-equilibrium structures that perform complex swim strokes, generating translation from rotation. The swimmer's speed and direction are determined by the topological defect's polarity and extent of elongation. Control over particle trajectories can be achieved by manipulating the elongation of defects using a rotating external magnetic field. The anisotropic viscosities associated with the defect elongation, lubrication forces, and line tensions between the colloid and the bounding surfaces contribute to the swimmers' translational motion and interaction.
Article
Chemistry, Physical
Wenjie Bi, Zhiyuan Zheng, Yue Wang, Ziyang Shi, Kunlun Wang, Yingliang Liu, Shengang Xu, Shaokui Cao
Summary: This study successfully synthesized fluorinated triphenylene monomers and polymers with discotic liquid crystalline polymer structures, and investigated their structures and properties using various characterization methods. The polymers exhibited good thermal stability and showed different liquid crystalline phases. This research is important for structural modifications of discotic liquid crystalline polymers and has potential applications in organic optoelectronics.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Biochemistry & Molecular Biology
Roberto Termine, Attilio Golemme
Summary: Discotic liquid crystals, characterized by their self-assembling properties, have been studied extensively due to their potential in testing energy and charge transport theories, their ease of processability with various solvents, and their semiconducting properties for organic electronic devices. The research on charge transport properties includes analysis of phase structure, models for describing charge mobility, and techniques for measuring charge mobility in discotic liquid crystals.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Yuan-Tao Chen, Peng-Lai Gong, Yin-Ti Ren, Liang Hu, Hu Zhang, Jiang-Long Wang, Li Huang, Xing-Qiang Shi
Summary: Recent studies have discovered that interlayer interactions in two-dimensional layered materials can consist of both van der Waals forces and quasi-bonding character. The interactions are classified into two categories (I: homo-occupancy interaction; II: hetero-occupancy interaction) based on the occupancy of energy bands near the Fermi level. The classification provides a unified understanding of the total strength of interlayer interactions, which is a combination of van der Waals attraction and quasi-bonding interaction, showing different stabilizing effects in different categories.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Yi-Yuan Wu, Qianglin Wei, Jijun Zou, Hengyu Yang
Summary: The thermoelectric properties of monolayer triphosphide BiP3 were studied, revealing a large power factor, low thermal conductivity, and high ZT value, making it a promising thermoelectric material.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Shallu Dhingra, Indu Bala, Joydip De, Santosh Prasad Gupta, Upendra Kumar Pandey, Santanu Kumar Pal
Summary: In this study, a C-3-symmetric star-shaped discotic mesogen has been reported, exhibiting high electron mobility and significant potential for use in organic electronic devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Review
Polymer Science
Manish Kumar, Shalaka Varshney, Sandeep Kumar
Summary: The advances in discotic liquid crystal nanoscience explore the self-assembly of liquid crystals and nanostructures, leading to the creation of functional systems with tuned physical properties for organic electronics.
Article
Clinical Neurology
Xicai Sun, Quan Liu, Hongmeng Yu, Huan Wang, Weidong Zhao, Yurong Gu, Houyong Li, Keqing Zhao, Xiaole Song, Dehui Wang, Juan C. Fernandez Miranda, Carl H. Snyderman
Summary: Temporalis muscle flap (TMF) can be effectively used for reconstruction of skull base defects after expanded endoscopic nasopharyngectomy, reducing the occurrence of serious complications in patients with recurrent nasopharyngeal carcinoma.
JOURNAL OF NEUROLOGICAL SURGERY PART B-SKULL BASE
(2022)
Article
Chemistry, Multidisciplinary
Meihao Xia, Yao Chen, Ziran Chen, Wenhao Yu, Haomin Cheng, Chun Feng, Hailiang Ni, Biqin Wang, Keqing Zhao, Ping Hu
Summary: A 1,4-disubstituted 1H-1,2,3-triazoles was successfully synthesized through a catalyst-free click reaction, leading to the formation of a non-covalent palladium chloride complex with unique liquid crystal properties but relatively poor thermal stability. X-ray crystallographic analysis revealed the trans-trans isomeric orientation of the complex, which also showed strip-shaped nanostructures on an oriented graphite substrate.
Article
Chemistry, Applied
Hang Lin, Qiu-Bing Lv, Hai-Feng Wang, Ke-Qing Zhao, Ping Hu, Bi-Qin Wang, Benoit Heinrich, Bertrand Donnio
Summary: Liquid-crystalline D-A dyads and A-D-A triads have been synthesized via Pd-catalyzed Sonogashira coupling/DBU-promoted cyclization reactions, showing spontaneous self-organization into columnar hexagonal or rectangular mesophases over broad temperature ranges. The study reveals that perylenediimide is a stronger electron acceptor compared to benzoperylenediimide, and these donor-acceptor systems have potential applications in various optoelectronic devices.
Article
Chemistry, Multidisciplinary
Yu Du, Cai-Li Zhao, Sheng-Yuan Fan, Wen-Hao Yu, Shi-Kai Xiang, Ke-Qing Zhao, Chun Feng, Bi-Qin Wang
Summary: Seven hydrazide-functionalised triphenylenedicarboxyimides (TDIs) with different polar substitutes connected to the imide N atom were studied to investigate the impact of hydrogen bonding and polar substituents on their mesomorphic properties. It was found that hydrogen bonding was not strong enough to stabilize the columnar mesophase, while dipole-dipole effects favored mesophase stabilities. Additionally, the position of lateral substituents had a significant impact on self-assembly by affecting the overall dipole moment.
Article
Chemistry, Applied
Xue Xia, Cai-Li Zhao, Hong-Tian Xu, Wen-Hao Yu, Shi-Kai Xiang, Lai-Cai Li, Ke-Qing Zhao, Chun Feng, Bi-Qin Wang
Summary: This article describes the synthesis and self-assembly behavior of a series of ten optically active triphenylenedicarboxyimide (TDI) derivatives with a stereogenic center. The TDIs show an enantiotropic hexagonal columnar mesophase with high clearing temperatures. Chiral supramolecular structures are observed in the columnar mesophase of three pairs of chiral TDIs. The axially connected aromatic ring at the stereocenter provides steric repulsion upon stacking, leading to the formation of chiral supramolecular structures. The configuration of the stereogenic center is not the only factor responsible for inducing helical structures in solution.
Article
Chemistry, Multidisciplinary
Dan Xiong, Xiaoping Xiong, Ziran Chen, Wenhao Yu, Chun Feng, Hongmei Chen, Hailiang Ni, Biqin Wang, Keqing Zhao, Ping Hu
Summary: This study investigates the effects of alkyl chain and halogen atom substitution on the mesophase behavior of 1,2,3-triazole-based compounds, aiming to develop novel nematic-phase liquid-crystal materials for optical and photovoltaic devices. The introduction of halogen atoms at the 5-position of 1,2,3-triazole greatly broadens the mesogenic temperature range.
Article
Polymer Science
Jian Chen, Ya Wen, Lingyi Zeng, Xinchun Wang, Hongmei Chen, Wei Min Huang, Yuefeng Bai, Wenhao Yu, Keqing Zhao, Ping Hu
Summary: In this paper, a UV cross-linkable vitrimer-like polymer is synthesized, and it is found that the density of cross-linking and the mechanical properties of the resulting polymers can be tailored via varying the amount of photo-initiator and UV exposure time. The polymers also exhibit good shape memory effect, making them suitable for additive manufacturing applications.
Article
Chemistry, Organic
Ya-Qiong Qi, Shuai Liu, Yan Xu, Yang Li, Tong Su, Hai-Liang Ni, Yuanji Gao, Wenhao Yu, Peng Cao, Ping Hu, Ke-Qing Zhao, Bi-Qin Wang, Bin Chen
Summary: We report an efficient Ni-catalyzed three-component cross-electrophile coupling reaction, which accomplishes dicarbofunctionalization of 1,3-dienes by forming two new C-C bonds in one reaction.
Article
Immunology
Yue Ma, Le Shi, Keqing Zhao, Chunquan Zheng
Summary: The study discovers that lncRNA FR215775 is highly expressed in primary Th2 cells of mice. Inhibition of lncRNA FR215775 leads to suppressed proliferation of CD4+ T cells and decreased expression of IL-4 and IL-5 in the cell culture supernatant. Silence of lncRNA FR215775 results in milder allergic symptoms and reduced levels of immunoglobulin E in AR mice.
JOURNAL OF IMMUNOLOGY RESEARCH
(2022)
Article
Chemistry, Physical
Min Chen, Tai-Rong Zhang, Wen-Hao Yu, Qiang-Gen Li, Shi-Kai Xiang, Peng Cao, Ke-Qing Zhao, Chun Feng, Bi-Qin Wang
Summary: A series of new mixed tail triphenylene derivatives with specific side chains were synthesized and characterized, and their liquid-crystalline properties and the effects of variations in the lengths of alkoxy and N-alkyl chains on mesogens were studied. It was found that the length of the alkoxy chains had a more significant impact on the mesogens, and the intermolecular hydrogen bonding induced by the amide functional group enhanced the stability of the mesophase. Additionally, it was discovered that intermolecular hydrogen bonding was not the sole factor responsible for gel formation in these molecules.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Biomedical
Juan Cen, Runfang Zhang, Tingkui Zhao, Xin Zhang, Chuan Zhang, Jie Cui, Keqing Zhao, Shaofeng Duan, Yuqi Guo
Summary: The article introduces a novel treatment drug for ischemic stroke, SS31-HA-QT, which is a water-soluble compound that can specifically bind to CD44 receptors and be released in the ischemic region. Additionally, the drug can penetrate the blood-brain barrier and target mitochondria. In vitro and in vivo experiments demonstrate that SS31 can enhance drug penetration without toxicity. Furthermore, SS31-HA-QT exerts neuroprotective effects by activating mitophagy.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ming-Mei Zhou, Jiao He, Hui-Min Pan, Qing Zeng, Hang Lin, Ke-Qing Zhao, Ping Hu, Bi-Qin Wang, Bertrand Donnio
Summary: This study describes a efficient transition-metal-free arene-fluorine nucleophilic substitution reaction for the straightforward synthesis of several Fluorinated Polycyclic Aromatic Hydrocarbons, and reports the investigation of their liquid crystalline and optical properties.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Dong Yin, Hongyi Shang, Wenhao Yu, Shikai Xiang, Ping Hu, Keqing Zhao, Chun Feng, Biqin Wang
Summary: Introducing different functional groups to the peripheral chains of discotic liquid crystals is a common strategy for designing and synthesizing new promising mesomorphic materials. By modifying the synthesis method, compounds with good thermal stability and high mesophase forming ability were successfully prepared.
ACTA CHIMICA SINICA
(2022)
Article
Materials Science, Multidisciplinary
Hang Lin, Ke-Xiao Zhao, Min Jing, Xiu-Hai Long, Ke-Qing Zhao, Ping Hu, Bi-Qin Wang, Peng Lei, Qing-Dao Zeng, Bertrand Donnio
Summary: This article reports the synthesis of a unique family of liquid-crystalline dimers and their properties. These dimers have multiple functions and can self-assemble into large columnar superlattices. They can also form gels in solvents and exhibit high fluorescence quantum yields. These materials are of great importance in the field of organic electronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Wen-Jing Deng, Shuai Liu, Hang Lin, Ke-Xiao Zhao, Xiao-Yan Bai, Ke-Qing Zhao, Ping Hu, Bi-Qin Wang, Hirosato Monobe, Bertrand Donnio
Summary: In this study, two series of regio-isomeric liquid crystalline systems were synthesized and the influence of core topology on their properties was investigated. The beta-isomers showed more extended mesophase ranges, higher phase transition temperatures, and better organic gelling abilities compared to the alpha-isomers. Additionally, the beta-isomers exhibited higher charge carrier mobilities.
NEW JOURNAL OF CHEMISTRY
(2022)
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)
