Article
Materials Science, Multidisciplinary
Mona Rouhi, Anil Incel, Sudhirkumar Shinde
Summary: This study presents a method for synthesizing a water-compatible oxyanion-imprinted neutral receptor and demonstrates its practical applications in solid-phase extraction and amino acid binding in aqueous media.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Guoshuai Li, Yifei Yan, Pengfei Zhang, Xiaohua Xu, Zhong Jin
Summary: A new palladium-catalyzed meta-selective C-H olefination of aromatic carbonyl compounds was achieved by utilizing noncovalent hydrogen-bonding interaction directed by engineered N,N'-substituted ureas, demonstrating site-selective control without the need for prior stoichiometric installation and removal of directing groups.
Article
Chemistry, Multidisciplinary
Edward J. Mitchell, Adam J. Beecroft, Jonathan Martin, Sally Thompson, Igor Marques, Vitor Felix, Paul D. Beer
Summary: By combining halogen bonding and coumarin fluorophore incorporation in acyclic host structural design, the first XB receptors capable of binding and sensing the hydrosulfide anion in pure water in a reversible chemosensing fashion have been demonstrated. These XB receptors exhibit characteristic selective quenching of fluorescence upon binding to HS-.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Simisola Ajayi, Iman Asakereh, Hanieh Rezasoltani, David Davidson, Mazdak Khajehpour
Summary: The transfer model suggests that urea unfolds proteins mainly by increasing the solubility of the amide backbone, probably through urea-induced increase in hydrogen bonding. Other studies suggest that urea addition increases the magnitude of solvent-solute van der Waals interactions, which increases the solubility of nonpolar sidechains. Recent analyses hypothesize that urea has a similar effect in increasing the solubility of backbone and sidechain groups. Our research compares the effects of urea addition on the solvation of amides and alkyl groups, and demonstrates minimal effect on solvent hydrogen bonding properties and intra-molecular hydrogen bonding in salicylic acid. We also show that urea preferentially interacts with both amide and alkyl groups, contributing to protein denaturation.
Article
Chemistry, Multidisciplinary
Chenting Yan, Rei Kinjo
Summary: The [1+2] cycloaddition reaction between a cyclic (alkyl)-(amino)aluminyl anion and diaryldiazomethane results in the formation of an AlN2 three-membered ring species, which shows interesting reactivity and properties.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Fei Wang, Christophe Bucher, Qing He, Atanu Jana, Jonathan L. Sessler
Summary: This article summarizes the development of oligopyrrolic cages in supramolecular chemistry and sensing applications. Oligopyrrole cages with well-defined molecular geometries allow for reversible guest binding under ambient conditions, and the incorporation of pyrrole subunits within larger superstructures enables control over anion/conjugate acid binding activity. Additionally, the potential of using heterocycles other than pyrrole, such as pyridine and naphthyridine, to create self-assembled materials is explored.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Andrew Docker, Xiaobo Shang, Daohe Yuan, Heike Kuhn, Zongyao Zhang, Jason J. Davis, Paul D. Beer, Matthew J. Langton
Summary: A series of TPE derivatives functionalized with perfluoroaryl iodo-triazole halogen bond donors have been reported for anion recognition. These derivatives form luminescent nanoscale aggregates driven by anion coordination, serving as a powerful sensory mechanism for parts per billion concentration chloride sensing. The geometric isomers of these derivatives also act as unprecedented photoswitchable XB donor anion receptors, with the photostationary state composition modulated by the presence of a coordinating halide anion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Analytical
Sanchita Kundu, Tochukwu Kevin Egboluche, Zehra Yousuf, Md Alamgir Hossain
Summary: A new simple urea-based dipodal molecular cleft has been synthesized and studied for its binding affinity for various anions. The receptor shows strong selectivity for fluoride among halides and moderate selectivity for acetate among oxoanions, displaying visible color changes in the presence of specific anions.
Article
Chemistry, Physical
Ying Huang, Dongbin Zheng, Jing Bai, Wei Wang, Zhiqiang Yang, Yin Tian, Yuyu Fang
Summary: In this study, a novel chrysin-linked difluoroboron receptor was designed and synthesized for anion recognition. The receptor showed high sensitivity and selectivity towards F-, H2PO4-, and AcO- ions, as well as low detection limit and fast response time. The anion-sensing mechanism was attributed to the strong hydrogen bonding between the receptor and the three anions. Additionally, the receptor exhibited enhanced antitumor activity against two cancer cell lines.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Sophie C. Patrick, Robert Hein, Andrew Docker, Paul D. Beer, Jason J. Davis
Summary: In this study, a comprehensive investigation of the electrochemical anion sensing performance of novel halogen bonding (XB) and hydrogen bonding (HB) bis-ferrocene-(iodo)triazole receptors was conducted in competitive aqueous organic solvent media. The XB sensor outperformed the HB sensor in solution, particularly showing superior anion recognition capability even in highly competitive aqueous solvent media. Additionally, a significant surface-enhancement effect was observed for both XB/HB receptive films in all solvent systems.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Florian Ostler, Dariusz G. Piekarski, Tobias Danelzik, Mark S. Taylor, Olga Garcia Mancheno
Summary: The study introduced a novel chiral tetrakis-iodo-triazole structure as a neutral halogen bond donor for chiral anion-recognition and enantioinduction in ion-pair organocatalysis. It demonstrated selective recognition of chiral dicarboxylates and asymmetric induction in a benchmark organocatalytic reaction using the halogen bond donor, with inversions in chiral recognition, enantioselectivity, and chiroptical properties relative to the related hydrogen donor.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Heike Kuhn, Andrew Docker, Paul D. Beer
Summary: The synthesis and characterization of acyclic antimony(III) and bismuth(III) triaryl pnictogen bonding receptors were reported. The binding potency of halide anions was found to be closely related to the electronic properties of the aryl substituent and the polarisability of the pnictogen bonding donor. Selectivity profiles for chloride anions and oxoanions were revealed for the most potent receptors.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Alexey A. Artemjev, Anton P. Novikov, Gleb M. Burkin, Alexander A. Sapronov, Alexey S. Kubasov, Valentine G. Nenajdenko, Victor N. Khrustalev, Alexander V. Borisov, Anatoly A. Kirichuk, Andreii S. Kritchenkov, Rosa M. Gomila, Antonio Frontera, Alexander G. Tskhovrebov
Summary: The synthesis and structural characterization of supramolecular complexes of bicyclic cationic pyridine-fused 1,2,4-selenodiazoles with various anions are reported. The anions interact with the selenodiazolium cations through chelating non-covalent interactions, making them an attractive supramolecular recognition unit. The solubility and precipitation behavior of these complexes are discussed, and theoretical methods are used to study the nature and energies of the non-covalent interactions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Andrew Docker, Yuen Cheong Tse, Hui Min Tay, Andrew J. Taylor, Zongyao Zhang, Paul D. Beer
Summary: Exceptionally strong halogen bonding is utilized to synthesize chloride anion template XB [2]rotaxane host systems with heightened affinities. These host systems exhibit significantly enhanced affinities for hydrophilic ions in aqueous-organic media, while their affinities for hydrophobic ions are diminished, resulting in anti-Hofmeister bias.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Vijayendran Gowri, Sachin Jalwal, Arif Hassan Dar, Arya Gopal, Azhagumuthu Muthukrishnan, Ashima Bajaj, Md. Ehesan Ali
Summary: A new non-planar push-pull chromophore has been found to be an efficient system for detecting F- ion in water, with the sensing mechanism governed by H-bonding and deprotonation. However, replacing the phenyl group with DMA led to the failure of colorimetric and fluorometric detections due to masking and quenching effects. Excellent sensitivity and specificity towards F- was demonstrated in a successful tissue paper-based visual strip detection method.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Physical
Pengfei Duan, Deepak Asthana, Takuya Nakashima, Tsuyoshi Kawai, Nobuhiro Yanai, Nobuo Kimizuka
FARADAY DISCUSSIONS
(2017)
Article
Chemistry, Physical
Pengfei Duan, Deepak Asthana, Takuya Nakashima, Tsuyoshi Kawai, Nobuhiro Yanai, Nobuo Kimizuka
FARADAY DISCUSSIONS
(2017)
Article
Chemistry, Multidisciplinary
Sudhir Kumar Keshri, Deepak Asthana, Sonam Chorol, Yogendra Kumar, Pritam Mukhopadhyay
CHEMISTRY-A EUROPEAN JOURNAL
(2018)
Article
Multidisciplinary Sciences
Jesus Ferrando-Soria, Antonio Fernandez, Deepak Asthana, Selina Nawaz, Inigo J. Vitorica-Yrezabal, George F. S. Whitehead, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Neil D. Burton, Richard E. P. Winpenny
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Deepak Asthana, Nagabhushanam Patti, Pritam Mukhopadhyay
Summary: This study reports a stimuli-free, phase-selective immobilization of naturally occurring heavy crude oil using nanomaterials. The nanomaterials can instantaneously immobilize petroleum products and generate optical signals. They have high immobilization efficiency and a wide operational temperature range, making them promising for controlling and detecting oil spills.
Article
Chemistry, Multidisciplinary
Deepak Asthana, Dean Thomas, Selena J. Lockyer, Adam Brookfield, Grigore A. Timco, Inigo J. Vitorica-Yrezabal, George F. S. Whitehead, Eric J. L. McInnes, David Collison, David A. Leigh, Richard E. P. Winpenny
Summary: The authors used click chemistry to decorate polymer beads with paramagnetic molecules, which is a promising approach for dynamic nuclear polarization. This study represents the first attempt to attach polymetallic complexes to polymer beads, creating hybrid inorganic-organic rotaxanes.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ciaran J. Rogers, Deepak Asthana, Adam Brookfield, Alessandro Chiesa, Grigore A. Timco, David Collison, Louise S. Natrajan, Stefano Carretta, Richard E. P. Winpenny, Alice M. Bowen
Summary: In this study, we report the synthesis of a molecular multi-qubit model system with three weakly interacting spin 1/2 centers. By characterizing and separately addressing the individual spin qubits, we determine the strength of the inter-qubit dipolar interaction. Our findings suggest that this system could be utilized for EPR-based quantum information processing algorithms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Inorganic & Nuclear
Gargee Roy, Ritu Gupta, Satya Ranjan Sahoo, Sumit Saha, Deepak Asthana, Prakash Chandra Mondal
Summary: Ferrocene has been widely studied as a crucial redox probe in various platforms and has become one of the most studied organometallic compounds. It shows interesting metal-ligand coordination and has led to the preparation of important molecules. Ferrocene-based systems have applications in on-surface redox reactions, nanoelectronic devices, spin-dependent electrochemical processes, and molecular electronic devices. Recent progress has been made in understanding the electrochemical properties and designing ferrocene-based systems for optoelectronic applications.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Soumi De, Deepak Asthana, Chinthakuntla Thirmal, Sudhir K. Keshri, Ram Krishna Ghosh, Geeta Hundal, Raju Kumar, Satyendra Singh, Ratnamala Chatterjee, Pritam Mukhopadhyay
Summary: Organic molecules with an active dipole moment tend to align antiparallel in the solid state, resulting in no macroscopic polarization. However, a crystalline organic material has been discovered that self-assembles with a polar order and exhibits high piezoelectricity, ferroelectricity, and second harmonic generation activity. These findings open up new design possibilities for opto-, electro-, and mechano-responsive materials.
Article
Chemistry, Multidisciplinary
Selena J. Lockyer, Deepak Asthana, George F. S. Whitehead, Inigo J. Vitorica-Yrezabal, Grigore. A. Timco, Eric J. L. McInnes, Richard E. P. Winpenny
Summary: A synthetic strategy is used to prepare two distinct trimers of antiferromagnetically coupled {Cr7Ni} rings, showing substantial variation in magnetic interactions between spin centers.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Tom S. Bennett, Selina Nawaz, Selena J. Lockyer, Deepak Asthana, George F. S. Whitehead, Inigo J. Vitorica-Yrezabal, Grigore A. Timco, Neil A. Burton, Richard E. P. Winpenny, Eric J. L. McInnes
Summary: This study reports the synthesis and structural characterization of four [7]rotaxanes formed by coordinating hybrid inorganic-organic [2]rotaxanes to a central {Ni12} core. X-ray single crystal diffraction shows the formation of [7]rotaxanes with different conformations in the crystal. Small angle X-ray scattering and molecular dynamic simulations confirm the stability of the large molecules in solution and reveal different conformers than those found in the crystal. Pulsed EPR spectroscopy demonstrates a slight reduction in phase memory times for the {Cr7Ni} rings, which are proposed as qubits, in the presence of the {Ni12} cage.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Alisha Sengupta, Gargee Roy, Aakash Ravikant Likhar, Deepak Asthana
Summary: Supramolecular interactions allow for pre-programming of molecular assembly structures, enabling efficient energy transfer between molecules. Chiral luminescent systems can generate and amplify circularly polarized luminescence signals through supramolecular interactions. Self-assembly and co-assembly processes have great potential for achieving maximum energy transfer and circularly polarized luminescence in various molecular systems.
Review
Materials Science, Multidisciplinary
Prakash Chandra Mondal, Deepak Asthana, Ranjeev Kumar Parashar, Sakshi Jadhav
Summary: Chirality, a property of non-superimposable structures, is prevalent in biological systems and has led to significant growth in research on chiral inorganic nanomaterials. Advancements in synthesis and characterization technologies have allowed for the preparation of complex multi-functional materials, but challenges remain in transferring chirality to achiral nanomaterials, device fabrication, stability, and reproducibility. Additional research is needed to address these issues and explore potential applications of chiral nanomaterials in next-generation chiroptical devices.
MATERIALS ADVANCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Deepak Asthana, Selena J. Lockyer, Selina Nawaz, Robert J. Woolfson, Grigore A. Timco, Christopher A. Muryn, Inigo J. Vitorica-Yrezabal, David Collison, Neil A. Burton, Richard E. P. Winpenny
Summary: The dimeric and trimeric structures of a {Cr7Ni} wheel bridged by gold(I) in the ground state spin S = 1/2 were studied using CW and pulsed wave EPR spectrometry. The relaxation time constants of {Cr7Ni} matched well with previous observations, and DEER studies suggested the presence of multiple conformations in solution. SAXS and MD simulations further indicated a more flexible molecular geometry in solution compared to the solid state.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Jesus Ferrando-Soria, Antonio Fernandez, Inigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny
CHEMICAL COMMUNICATIONS
(2019)
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)
