Article
Chemistry, Organic
Ruth Mariam Ipe, Athira Parammal, Probal Nag, Shigeki Mori, Sivaranjana Reddy Vennapusa, Sabapathi Gokulnath
Summary: We synthesized and characterized two porphyrin arrays, C6F5-PyZnDP and Mes-PyZnDP, linked by a pyrene moiety with different substituents at their meso-positions. The key precursor bis-dipyrromethane linked with a pyrene bridge was prepared. C6F5-PyZnDP was synthesized through two different routes, with one being more efficient, and both the free base and metalated diporphyrins showed bathochromically shifted absorption and intense red emission.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Huijuan Li, Hui Feng, Meng Li, Xuan Zhang
Summary: This study proposes an effective strategy to fabricate high-performance MD membranes with superhydrophobicity and slippery characteristics, exhibiting excellent wetting/scaling resistance and mechanical robustness. The membranes outperform existing MD membranes in the treatment of high saline brine and synthetic multi-component hypersaline wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sajini D. Hettiarachchi, Emel Kirbas Cilingir, Heidi Maklouf, Elif S. Seven, Suraj Paudyal, Steven Vanni, Regina M. Graham, Roger M. Leblanc
Summary: This study compared three different covalent carbon dots systems for doxorubicin release and cancer cell viability under acidic and physiological conditions. Results indicated that the pH stimuli C-dots-HBA-dox system showed the highest efficacy in doxorubicin release in acidic pH, while the redox stimuli C-dots-S-S-dox system performed well in physiological conditions.
Article
Chemistry, Physical
Kharu Nisa, Gaurav Kumar Mishra, M. Thirumal, Shive M. S. Chauhan
Summary: 5,15-bis(1-hydoxy-2,6-di-tert-butyl-phenyl)10,20-bis-(pentaphenyl-phenyl)phenyl porphyrin and its Nickel complex were synthesized, and characterized by NMR, mass, and UV-visible spectroscopy. The density functional theory studies revealed a decrease in the HOMO-LUMO energy gaps in oxo-porphodimethenes, which exhibited reversible light-driven fluorescent molecular switches using porphyrin moieties.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Multidisciplinary
Romain Chevigny, Johanna Schirmer, Carmen C. Piras, Andreas Johansson, Elina Kalenius, David K. Smith, Mika Pettersson, Efstratios D. Sitsanidis, Maija Nissinen
Summary: The experiment describes a transient organo-gelation system with spatiotemporal dynamic properties, in which the solvent actively controls a complex set of equilibria that underpin the dynamic assembly event, leading to the observed metastability.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Folkert de Vries, Edwin Otten
Summary: This article describes the redox-switching of a formazanate zinc catalyst in ring-opening polymerization of lactide. The catalytic activity can be modulated by reversible reduction/oxidation chemistry at a purely organic fragment, achieved by using a redox-active ligand bound to an inert metal ion (Zn2+). Kinetic and spectroscopic studies, along with mass spectrometry analysis of the catalysis mixture, provide insights into the nature of the active species and the initiation of lactide ring-opening polymerization. The mechanistic data highlights the crucial role of the redox-active ligand and offers an explanation for the formation of cyclic polymer.
Article
Chemistry, Inorganic & Nuclear
Tatyana S. Koptseva, Natalia L. Bazyakina, Mikhail V. Moskalev, Evgeny V. Baranov, Igor L. Fedushkin
Summary: The paragraph describes the formation of two complexes from the reaction of [LGa-GaL] (1) with different ligands, characterized by H-1 NMR, IR spectroscopy, and single-crystal X-ray analysis.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Environmental Sciences
Serhat Uzan
Summary: The existing reducing agents for methylene blue decolorization are soluble in water and the reduction process is carried out in a homogeneous redox reaction medium. However, these reducing agents often remain in the reaction medium after decolorization, leading to chemical pollution of textile wastewater. To address this issue, a water-insoluble redox active azo polymer was synthesized for heterogeneous reduction of methylene blue. The kinetic parameters of this redox reaction were investigated and compared with those of the azo polymer monomer (1,4-dihydroxybenzene).
ENVIRONMENTAL POLLUTION
(2023)
Article
Biochemistry & Molecular Biology
Eunjung Shin, Qianying Ye, Sung-Jae Lee
Summary: Bacterial genomes contain insertion sequences (ISs) that can influence the responsive capacity of organisms t environmental challenges. This review discusses how certain ISs are transposed to carotenoid biosynthesis genes and the genetic features and stress responses associated with bacterial IS transposition. The redox signaling mechanism is believed to play a crucial role in IS transposition.
Article
Engineering, Environmental
Leslie Behrends, Laura Houke, Earl Bailey, Pat Jansen
Summary: A microcosm treatability study was conducted in a wetland research facility in the USA. The study found that wastewater treatment with reciprocation significantly improved removal of COD and ammonium.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Samaneh Abbasi, Farzaneh Hekmat, Saeed Shahrokhian
Summary: The electrochemical performance of supercapacitors can be improved by adding reversible redox mediators and doping carbon-based electrode materials. An eco-friendly hydrothermal carbonization method was used to synthesize carbon spheres, which were then chemically modified and doped with nitrogen and boron. The use of AQSA/KI as dual redox mediators in the assembled supercapacitors resulted in high energy density, good cyclic stability, and remarkable capacitive performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Kuo-Hui Wu, Ryota Sakamoto, Hiroaki Maeda, Eunice Jia Han Phua, Hiroshi Nishihara
Summary: The study presents an efficient electrochemical method to synthesize pi-conjugated redox metal-complex linear polymer wires on glassy carbon surfaces, demonstrating fast redox conduction properties. The method allows for the creation of anisotropic hetero-metal-complex polymer wires with reversible redox reactions, showing potential for integrating functional molecules onto carbon surfaces.
Article
Green & Sustainable Science & Technology
Anjishnu Biswas, Saswati Chakraborty
Summary: Wastewater treatment with energy recovery is a major concern in environmental engineering research nowadays. The current study focuses on the removal of organics and fecal coliforms in domestic wastewater using three different reactors. The results show that the planted CW-MFC reactor achieved the highest COD removal efficiency, while the planted constructed wetland and unplanted CW-MFC reactors had similar BOD removal efficiencies. The presence of plants and electrodes played a crucial role in the removal of pathogens and COD from wastewater.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Ning Zhang, Chaoyu Li, Huijun Xie, Yixiao Yang, Zhen Hu, Mingming Gao, Shuang Liang, Kuishuang Feng
Summary: The study demonstrates that enhanced Mn redox cycling in constructed wetlands can improve nitrogen removal efficiency, and using Mn oxides as the matrix can accelerate the nitrogen removal process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Qinzheng Hu, Shuzhen Cui, Kanjun Sun, Xiuting Shi, Wenxing Miao, Xiangbing Wang, Hui Peng, Guofu Ma
Summary: The focus of recent research on flexible supercapacitors is to improve their energy density. A recent study has reported an improved energy storage method by adding suitable redox additives to gel electrolytes to enhance their redox activity. This study presents a novel stretchable and redox-active hydrogel electrolyte, prepared through polymerization and solvent displacement, which shows superior stretchability and high energy density. The introduction of a redox additive further enhances the specific capacitance and energy density. This study provides a new strategy for designing multifunctional redox hydrogel electrolytes.
JOURNAL OF ENERGY STORAGE
(2023)
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)