Article
Chemistry, Multidisciplinary
Mohd Nazish, Han Bai, Christina M. Legendre, Regine Herbst-Irmer, Lili Zhao, Dietmar Stalke, Herbert W. Roesky
Summary: This work presents the different coordination nature of the bidentate ligand towards gold and silver complexes. Compound 2 exhibits intramolecular aurophilic interaction, while in compound 4, only two P(III) coordinate to Ag(I) with simultaneous oxidative addition of Fluorine.
CHEMICAL COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Andriani Furoida, Misato Daitani, Kyohei Hisano, Osamu Tsutsumi
Summary: Gold(I) complexes with rod-like molecular skeletons were synthesized and demonstrated aggregation-induced emission and liquid crystalline properties. These complexes exhibited high room-temperature phosphorescence yields in crystals, which were significantly influenced by crystal quality and aggregate structure. Complexes with longer flexible chains showed liquid crystalline properties and room-temperature phosphorescence.
Article
Chemistry, Multidisciplinary
Kun Sun, Yaoxuan Shi, Huiyi Li, Jingjing Shan, Chengyue Sun, Zhen-Yu Wu, Yujin Ji, Zhijiang Wang
Summary: The use of an Au-complex derived carbon nanotube-supported Au nanoclusters catalyst has been shown to enhance the performance of CO2 reduction, leading to the production of CO.
Article
Chemistry, Physical
Akihiro Nakayama, Ryusei Sodenaga, Yuvaraj Gangarajula, Ayako Taketoshi, Toru Murayama, Tetsuo Honma, Norihito Sakaguchi, Tetsuya Shimada, Shinsuke Takagi, Masatake Haruta, Botao Qiao, Junhu Wang, Tamao Ishida
Summary: Cation-and anion-substituted hydroxyapatites (sHAPs) supported gold catalysts exhibit strong metal support interaction (SMSI) under oxidative atmosphere, enhancing the cationic properties of gold and increasing catalytic activity. Controlling the degree of SMSI allows for tuning the electronic state of metal nanoparticles and providing highly active and durable catalysts for target reactions.
JOURNAL OF CATALYSIS
(2022)
Article
Biochemistry & Molecular Biology
Svetlana V. Amosova, Vladimir A. Shagun, Nataliya A. Makhaeva, Irina A. Novokshonova, Vladimir A. Potapov
Summary: The study identified a previously unknown pathway for the reaction of 2-bromomethyl-1,3-thiaselenole with 1,3-benzothiazole-2-thiol, demonstrating successful regioselective synthesis of the reaction products in high yields.
Article
Chemistry, Physical
Ling Li, Guanjian Cheng, Di Jiang, Qike Jiang, Feng Hong
Summary: Gold catalysts can exhibit excellent selectivity in chemoselective hydrogenation reactions, but their reactivity and stability are inferior to Pt-group metal catalysts. This study demonstrates that the strong metal-support interaction between gold nanoparticles and perovskites can enhance the catalytic performance of gold-based catalysts in the hydrogenation reaction of 3-nitrostyrene. The oxide support partially covers the surface of gold nanoparticles, increasing the interfacial area between gold nanoparticles and perovskites support.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Analytical
Changbao Hong, Ying Dong, Ruiqin Zhu, Yibo Yan, Xiantao Shen, Stig Pedersen-Bjergaard, Chuixiu Huang
Summary: This study investigated the effect of sample matrix on electromembrane extraction (EME) for the first time using cathinones as model analytes. The results showed that different sample matrices had different effects on the efficiency of EME. A binary supported liquid membrane (SLM) was developed to overcome fouling issues and showed high recovery rates of cathinones from urine and whole blood samples. The optimized EME method combined with liquid chromatography tandem mass spectrometry (LC-MS/MS) provided a sensitive and efficient way to measure cathinones in biological samples.
Article
Chemistry, Multidisciplinary
Akihiro Ando, Kazuhisa Ozaki, Urara Shiina, Eikichi Nagao, Kyohei Hisano, Kenji Kamada, Osamu Tsutsumi
Summary: The study focused on the photophysical behavior of an Au(I) complex exhibiting intense room-temperature phosphorescence (RTP) in crystals, revealing extremely efficient electronic transitions occurring in the crystal. Intermolecular interactions and heavy-atom effects were shown to play crucial roles in enhancing phosphorescence in crystals. These insights are expected to drive the development of new luminogens for various sensing and imaging applications.
Article
Chemistry, Physical
Mohan Tiwari, C. N. Ramachandran
Summary: Auro-acetylene clusters form stable cyclic structures through C-Au···π interactions.
CHEMICAL PHYSICS LETTERS
(2022)
Review
Biochemistry & Molecular Biology
Roberto G. S. Berlinck, Camila M. Crnkovic, Juliana R. Gubiani, Darlon I. Bernardi, Laura P. Ioca, Jairo I. Quintana-Bulla
Summary: Water-soluble natural products are a relevant group of secondary metabolites known for their potent biological activities, but they have been less scrutinized in the last few decades. This review discusses the possible reasons for the under-investigation of water-soluble metabolites and describes approaches for their isolation, as well as novel chromatography techniques.
NATURAL PRODUCT REPORTS
(2022)
Article
Chemistry, Organic
Taichi Baba, Nobuto Yoshinari
Summary: A new dinuclear gold(I) complex with a bridging diphosphine ligand and two terminal thiol ligands was synthesized and characterized. The compound formed a 1D chain supramolecular structure through intermolecular aurophilic interactions in the crystal structure, leading to photoluminescence in the solid state.
Article
Chemistry, Physical
Lukasz Wolski, Kamila Sobanska, Joanna Wolska, Mateusz Rozmyslak, Grzegorz Nowaczyk, Marcin Frankowski, Piotr Pietrzyk
Summary: Understanding the factors affecting the reactivity of gold nanoparticles in catalytic oxidation is important, with a focus on the metal-support interaction. This study showed that the APMS modifier weakens electronic interaction between ZnO and Au NPs, resulting in lower catalase-like activity towards H2O2 but higher efficiency in utilizing H2O2 for oxidation of benzyl alcohol under base-free conditions.
Article
Chemistry, Multidisciplinary
Puthan Veetil Muhasina, Pattiyil Parameswaran
Summary: This study investigates the stability, bonding and reactivity of a series of compounds consisting of an electron-donor group and an electron-donor ligand, with non-bonding electrons. The ground states of these compounds are found to have a central carbon atom with a lone pair of electrons and an unpaired electron. The spin transition from pi- to sigma-type orbitals is observed as the pi-acceptor strength of the donor ligand increases.
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sneha Parambath, S. J. Jishnu Narayanan, Pattiyil Parameswaran
Summary: The structure, bonding, and reactivity of nitrogen-containing beryllium compounds were investigated at the theoretical level. It was found that the best bonding representation is an interaction between Be+ and the ligands. Both compounds exhibited high proton and hydride affinity, indicating their ambiphilic reactivity. These compounds showed exothermic reaction energy for adduct formation with electron donor ligands.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Athulya Kadeprath Satheesan, Lakshmi V. Nair, Jishnu Sai Gopinath, Pattiyil Parameswaran, Chandrasekharan Keloth
Summary: We report the nonlinear absorptive and refractive properties of platinum-17 (Pt17) metal nanoclusters stabilized by carbon monoxide and triphenyl phosphine ligands. The studies reveal molecule-like behavior and discrete energy levels at the focus. The clusters also exhibit lower optical limiting threshold value and self-defocusing behavior against intense optical radiation. Additionally, we demonstrate the enhancement in the absorptive nonlinearity of the synthesized clusters through photonic crystal cavity-assisted intense field localization in the defect layer.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Diana Mathew, Pattiyil Parameswaran
Summary: In this study, meso-aryl BODIPYs were designed as a structural motif for the transformation from aggregation-caused quenching (ACQ) to aggregation-induced emission (AIE). A series of meso-aryl BODIPY derivatives were synthesized and their photophysical properties were analyzed. The emission properties were found to be correlated with the flexibility of the aromatic ring. Decorating BODIPYs with polycyclic aromatic systems inhibited pi-pi stacking and allowed for the conversion of planar aryl luminophores from ACQ to AIEgens. The meso-pyrene BODIPY derivative also exhibited excellent mechanofluorochromic behavior.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohd Nazish, Christina M. M. Legendre, Yi Ding, Bastian Schluschass, Brigitte Schwederski, Regine Herbst-Irmer, Parameswaran Parvathy, Pattiyil Parameswaran, Dietmar Stalke, Wolfgang Kaim, Herbert W. W. Roesky
Summary: A successful selective reduction of X2B-Tip (Tip= 1,3,5-Pr- i (3)-C6H2, X = I, Br) with KC8 and Mg metal, respectively,in the presence of a hybrid ligand (C6H4(PPh2)LSi) leads to a stable low-valent five-membered ring as a boryl radical [C6H4(PPh2)LSiBTip][Br](1) and neutral borylene [C6H4(PPh2)LSiBTip] (2). Compound 2 reacts with 1,4-cyclohexadiene, resulting in hydrogen abstraction to afford the radical [C6H4(PPh2)LSiB(H)Tip](3). Quantum chemical studies reveal that compound 1 is a B-centered radical, and compound 2 is a phosphane and silylene stabilized neutral borylene in a trigonal planar environment, whereas compound 3 is an amidinate-centered radical. Although compounds 1 and 2 are stabilized by hyperconjugation and pi-conjugation, they display high H-abstraction energy and basicity, respectively.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohd Nazish, Christina M. Legendre, Nico Graw, Regine Herbst-Irmer, Shahila Muhammed, Pattiyil Parameswaran, Dietmar Stalke, Herbert W. Roesky
Summary: This study presents a method for preparing chain-type unsaturated molecules with low oxidation state Si(I) and Sb(I), and their characteristics of sigma-type lone pairs and pseudo-pi bonds are investigated. The formation of the pseudo-pi bond is through the hyperconjugative transfer of the pi-type lone pair at Sb to the Si-N sigma* MO.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sneha Parambath, Vishnu Thannimangalath, Pattiyil Parameswaran
Summary: The structure, chemical bonding, and reactivity of neutral 16 valence electrons transition metal complexes of beryllium were studied. Dative quadruple bonds between the transition metal and beryllium were observed, with the strength varying based on the ligands coordinated to the transition metal. The beryllium center showed ambiphilic reactivity due to the M-Be dative quadruple bonds, as indicated by high proton and hydride affinity values.
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Rinsha Cholasseri, Pattiyil Parameswaran
Summary: Locked azobenzenes (LAB) derivatives are studied for their thermodynamic stability and vertical excitation energy in the presence of tetraethyl ammonium ion (TEA) substituent and KcsA K+-ion channel protein environment. It is found that the Z-isomer is more thermodynamically stable than the E-isomer. The substitution of tetraethyl ammonium ion does not affect the thermodynamic stability, but it is reversed in the protein environment. The photochemistry of LAB is unaffected by para-substituted TEA, but the geometrical changes imposed by the protein decrease the vertical excitation energy.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Chemistry, Organic
S. Shurooque Kanneth, Diana Mathew, Pattiyil Parameswaran, Anjali K. Sajeev, K. N. Narayanan Unni, Lakshmi Chakkumkumarath
Summary: Structurally simple and synthetically straightforward molecules based on 1,4-dihydropyridine (DHP) have been studied for their unique photophysical properties. By introducing different substituents, such as electron-withdrawing groups and alkyl or alkylaryl groups, on the periphery of DHP, interesting photophysical properties like negative solvatochromism and aggregation-induced emission (AIE) can be achieved. Additionally, variations in molecular packing in the crystal lattice contribute to the tuning of solid-state emission properties. The aggregates of these molecules are effective in detecting aromatic volatile organic compounds (VOCs), with p-xylene showing a significant enhancement in emission.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Diana Mathew, Chellaiah arunkumar, Subramaniam Sujatha, Pattiyil Parameswaran
Summary: We demonstrate the synthesis of three meso-substituted BODIPYs as fluorimetric chemosensors for detecting fluoride ions in organic solvents. The BODIPYs show strong absorption and emission in the visible region and can form adducts with fluoride ions, resulting in a non-fluorescent state. These adducts can revert back to the fluorescent state when exposed to protic solvents, making them reversible sensors.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Editorial Material
Chemistry, Physical
Moushakhi Ghosh, Shabana Khan
Article
Chemistry, Multidisciplinary
Diana Mathew, Santanu Sasidharan, Prakash Saudagar, Subramaniam Sujatha, Pattiyil Parameswaran
Summary: We synthesized and studied the photophysical properties of carbazole BODIPY derivatives, including mono- and di-brominated versions. These compounds exhibit red-shifted fluorosolvato/vapochromism due to twisted intramolecular charge transfer (TICT) and show aggregation-induced emission (AIE) behavior. Additionally, we discovered their potential as anti-leishmanial compounds against Leishmania donovani promastigotes.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jabed Hossain, Jishnu Sai Gopinath, Srinu Tothadi, Pattiyil Parameswaran, Shabana Khan
Summary: In this study, we demonstrated the complexation reaction of silylene and germylene with copper(I) salts and used them as efficient catalysts in the CuAAC reaction. The molecular structures of the copper complexes were determined by single-crystal X-ray diffraction studies, and density functional theory studies showed the mechanism of the bimetallic Cu catalyst in promoting the cycloaddition reaction.
Article
Chemistry, Physical
Sneha Parambath, Pattiyil Parameswaran
Summary: This study reports the chemical bonding and reactivity of a new type of neutral transition metal-beryllium complex. The complex has a trigonal bipyramidal coordination geometry and the bonding between the transition metal and beryllium is described by dative quadruple bonds. The quadruple bonds consist of two sigma-bonds and two pi-bonds, and the beryllium center exhibits ambiphilic character.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Mohd Nazish, Yi Ding, Christina M. Legendre, Arun Kumar, Nico Graw, Brigitte Schwederski, Regine Herbst-Irmer, Parameswaran Parvathy, Pattiyil Parameswaran, Dietmar Stalke, Wolfgang Kaim, Herbert W. Roesky
Summary: In this study, stable silicon-boron radical compounds were reported and prepared using a one-pot reaction. The structures and properties of these compounds were characterized using various analytical techniques. Quantum chemical calculations revealed that the stability of the boron radicals in these compounds is achieved through hyperconjugative interactions.
DALTON TRANSACTIONS
(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)
