Article
Chemistry, Organic
Jules Brom, Antoine Maruani, Serge Turcaud, Sonia Lajnef, Fabienne Peyrot, Laurent Micouin, Erica Benedetti
Summary: The study demonstrates the photocatalytic activity of coumarins derived from [2.2]paracyclophane for the reductive cleavage of sulfonamides under light-irradiation. The findings open up new possibilities for the application of pCps in photocatalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Ashmalina Rahman, Mohammad Mansoob Khan
Summary: Chalcogenides, as narrow-band gap semiconductors, are widely used as photocatalysts to efficiently absorb solar energy and generate e(-)/h(+) pairs under visible light irradiation. These pairs have been utilized for water splitting and pollutant degradation, showing remarkable photocatalytic activity enhancement. Future prospects for chalcogenides as photocatalysts and chalcogenide-based heterostructures were also discussed in the review.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Fernando Duraes, Andreia Palmeira, Barbara Cruz, Joana Freitas-Silva, Nikoletta Szemeredi, Luis Gales, Paulo Martins da Costa, Fernando Remiao, Renata Silva, Madalena Pinto, Gabriella Spengler, Emilia Sousa
Summary: The overexpression of efflux pumps contributes to multidrug resistance, particularly in antimicrobial resistance. Thioxanthone derivatives may have the potential to inhibit bacterial efflux pumps, biofilm formation, and quorum-sensing. Additionally, these derivatives exhibit low cytotoxicity in human cells.
Article
Chemistry, Organic
Wen Liao, Jing Hou, Hongding Tang, Xinyue Guo, Guanyu Sheng, Ming Jin
Summary: A strategy for the synthesis of thioxanthone derivatives (TXs) using visible-light-promoted and transition-metal-free photoredox catalysis has been developed. Mechanistic studies and density functional theory calculations suggest that the visible-light-promoted intramolecular cyclization involves hydrogen atom transfer, C-C formation, and oxidative dehydrogenation, exhibiting high regioselectivity and reactivity. Importantly, this C-C formation strategy can be applied to the gram-scale synthesis of TXs-based commercial photoinitiators and drugs.
Review
Chemistry, Physical
Zhuangfei Qian, Zi Jun Wang, Kai A. Zhang
Summary: This review summarizes the recent developments in Covalent triazine frameworks (CTFs) as a new class of visible light-active, metal-free, and polymer-based heterogeneous photocatalysts. It discusses various physical and chemical design strategies for morphology, band structure, charge separation, and transfer optimization that directly impact their photocatalytic efficiency, with emphasis on enhancing and maximizing the efficiency for specific applications.
CHEMISTRY OF MATERIALS
(2021)
Article
Biochemical Research Methods
Alexandra Klimm, Walter Vetter
Summary: This study investigates the structures of tri- and tetrabrominated phenols, diphenols, methylphenols and ethylphenols by bromination of non-brominated or partly brominated (alkyl) phenols and diphenols. The resulting products were interpreted through combinatoric evaluation of GC/MS data, undirected syntheses, UV transformation studies and theoretical considerations, leading to the assignment of all 44 tri- to tetrabrominated OxyTPs existing in theory.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Polymer Science
Mostafa R. Abukhadra, Islam Saad, Sarah Othman, Ahmed A. Allam, Walid Fathallah
Summary: Two green nanocomposites were synthesized and found to be efficient photocatalysts for the oxidation of methyl parathion pesticide under visible light and effective antibacterial agents against Staphylococcus aureus and Vibrio Sp.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Chemistry, Physical
Yang Liu, Chensi Tang, Min Cheng, Ming Chen, Sha Chen, Lei Lei, Yashi Chen, Huan Yi, Yukui Fu, Ling Li
Summary: POM@MOF composites have been attracting attention in photocatalysis due to their enhanced performance, which benefits from the high specific surface area and long-range ordered structure of MOFs that ensure a uniform distribution of POMs and provide more active catalytic sites.
Article
Chemistry, Multidisciplinary
Bo Peng
Summary: Monolayer fullerene networks are potential efficient photocatalytic materials with suitable band gaps and band edge positions for driving water splitting, along with high carrier mobility and abundant active sites.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Organic
Li Liu, Yage Zhang, Wenyan Zhao, Jinxia Wen, Chunping Dong, Caijuan Hu, Jian Li
Summary: A method for photocatalyzed cascade double C-C formation via sp2 C-H bond activation of diarylamines with hypervalent iodine diazo reagents was developed. The method tolerated a variety of diarylamines and hypervalent iodine(III) reagents and efficiently provided a range of substituted acridines with yields ranging from moderate to excellent. The protocol introduced diazo groups onto diarylamines and enabled subsequent late-stage assembly point functionalization with the diazonium structure, forming two new C-C bonds in a sequential fashion.
Article
Chemistry, Analytical
Zijuan Peng, Mingwu Shao, Miao Yu, Boling Lu, Xingchen Zhao, Penghui Li, Shanjun Song, Qian Liu, Tao Zhou, Qinghe Zhang
Summary: A novel approach using solubility parameters as indicators for the extraction of additives in plastic products was developed and verified in various plastic materials. The results demonstrated the accuracy and feasibility of this method for field sample analysis.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Bo Peng
Summary: Photocatalytic water splitting is an environmentally friendly method to produce hydrogen and reduce global carbon emissions. Monolayer fullerene networks, synthesized recently, offer new material candidates for photocatalysis due to their large surface area, abundant active sites, and potential for hydrogen storage. The electronic structures of monolayer fullerene networks were investigated using density functional theory and hybrid functional calculations. It was found that these networks have suitable band gaps, appropriate band edges, and sufficient driving force for water splitting. Additionally, different phases of fullerene networks exhibit unique optical properties, making them advantageous in photocatalysis as either electron acceptors or donors.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Multidisciplinary
Rui Zhai, Lihui Zhang, Mengyue Gu, Xuewen Zhao, Bo Zhang, Yonghong Cheng, Jinying Zhang
Summary: Effective photocatalytic CO2 reduction is important for addressing energy crisis and global warming. Metal-based semiconductors have been well reviewed, but nonmetal-based semiconductors, especially phosphorus structures, have not been systematically reviewed for CO2 reduction. This paper reviews the progress of phosphorus structures as photocatalysts for CO2 reduction, including different allotropes and doping or ligands.
Review
Chemistry, Multidisciplinary
Artem S. Belousov, Evgeny Suleimanov, Diana G. Fukina
Summary: Heterogeneous photocatalysis is considered an attractive alternative route for converting solar energy into chemical energy, with a focus on new materials sensitive to visible light. Pyrochlore oxides have shown promise as visible light-responsive photocatalysts due to their compositional flexibility and opportunities for enhancing electron/hole mobility, with recent progress in various applications and strategies for improving their photocatalytic activity.
NEW JOURNAL OF CHEMISTRY
(2021)
Review
Chemistry, Physical
Calum T. J. Ferguson, Kai A. Zhang
Summary: The combination of classical polymers with photocatalytic small molecules has yielded a class of recyclable photocatalytic materials that are inexpensive, easy to produce, and versatile in functionality and physical features. These materials can be easily tuned for specific application requirements, enabling a broad range of visible-light-mediated photoredox reactions.
Article
Polymer Science
Dominika N. Lastovickova, Faye R. Toulan, Joshua R. Mitchell, David VanOosten, Anthony M. Clay, Joseph F. Stanzione, Giuseppe R. Palmese, John J. La Scala
Summary: Photocurable bio-derived isosorbide (meth)acrylates with low viscosity and high T-g have been developed for photoinitiated additive manufacturing. The addition of reactive diluents and crosslinkers can improve the properties of the polymers, making them suitable for photoinduced AM applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Sunil Kumar Kandappa, Lakshmy Kannadi Valloli, Steffen Jockusch, Jayaraman Sivaguru
Summary: An unprecedented photochemical reactivity of 1,3-dicarbonyl compounds with amino-alkenes has been discovered, leading to the formation of dihydropyrans. This novel reaction has changed the established paradigm related to the De Mayo reaction between 1,3-dicarbonyl compounds and alkenes and allows for convenient access to the Marmycin core from commercially available reactants in a single step. Detailed origin and scope of this new photoreaction have been investigated with preliminary photophysical and mechanistic studies.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Environmental Sciences
Marina Arino Martin, Jayaraman Sivaguru, John McEvoy, Prinpida Sonthiphand, Eakalak Khan
Summary: Endoxifen, the main metabolite of tamoxifen, was found in municipal wastewater treatment plants. Exposure to sunlight led to generation of phototransformation by-products (PBPs) which were more toxic to aquatic life than the original compound. Further research is needed on the presence and impact of these PBPs in surface water near discharge points.
ENVIRONMENTAL RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Sruthy Baburaj, Lakshmy Kannadi Valloli, Jayachandran Parthiban, Dipti Garg, Jayaraman Sivaguru
Summary: The control of photochemical reactions through hydrogen bonding is emphasized in order to develop Bronsted acid mediated photocatalysis.
CHEMICAL COMMUNICATIONS
(2022)
Article
Biology
Xuanting Wang, Carolina Q. Sacramento, Steffen Jockusch, Otavio Augusto Chaves, Chuanjuan Tao, Natalia Fintelman-Rodrigues, Minchen Chien, Jairo R. Temerozo, Xiaoxu Li, Shiv Kumar, Wei Xie, Dinshaw J. Patel, Cindy Meyer, Aitor Garzia, Thomas Tuschl, Patricia T. Bozza, James J. Russo, Thiago Moreno L. Souza, Jingyue Ju
Summary: This paper discovers that hepatitis C virus inhibitors Pibrentasvir and Ombitasvir can inhibit the SARS-CoV-2 exonuclease and have therapeutic potential when combined with SARS-CoV-2 polymerase inhibitors in viral cell cultures. Combination drugs that inhibit both the SARS-CoV-2 polymerase and exonuclease are supported for effective COVID-19 treatment.
COMMUNICATIONS BIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Ravichandranath Singathi, Ramya Raghunathan, Retheesh Krishnan, Saravana Kumar Rajendran, Sruthy Baburaj, Mukund P. Sibi, Dean C. Webster, Jayaraman Sivaguru
Summary: Photodegradable, recyclable, and renewable crosslinked polymers from bioresources have the potential to address the issue of plastics degradability and recyclability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Sunil Kumar Kandappa, Sapna Ahuja, Ravichandranath Singathi, Lakshmy Kannadi Valloli, Sruthy Baburaj, Jayachandran Parthiban, Jayaraman Sivaguru
Summary: This article highlights the role of restricted bond rotations in influencing the excited-state reactivity of organic molecules, and emphasizes the design strategies and methods for achieving selectivity in photochemical reactions.
Article
Chemistry, Physical
Naishka E. Caldero-Rodriguez, Enrique M. Arpa, Diego J. Cardenas, Lara Martinez-Fernandez, Steffen Jockush, Sourav Kanti Seth, Ines Corral, Carlos E. Crespo-Hernandez
Summary: This study investigates the excited-state dynamics of 2-oxopurine riboside in aqueous solution and demonstrates its potential use as a dual fluorescent and photosensitizer analog for DNA and RNA research.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Multidisciplinary
Luis A. Ortiz-Rodriguez, Ye-Guang Fang, Germain Niogret, Kaivin Hadidi, Sean J. Hoehn, Heather J. Folkwein, Steffen Jockusch, Yitzhak Tor, Ganglong Cui, Liraz Levi, Carlos E. Crespo-Hernandez
Summary: In this study, a new DNA and RNA fluorescent probe was developed by thionation, which showed high photodynamic efficacy against melanoma and cervical cancer cells under both normoxic and hypoxic conditions. The experimental and computational results demonstrated that the thionated pyrimidine derivative is the most promising thiobase photosensitizer developed to date.
Article
Chemistry, Multidisciplinary
Sapna Ahuja, Sruthy Baburaj, Lakshmy Kannadi Valloli, Sarvar Aminovich Rakhimov, Kavyasree Manal, Aakrati Kushwaha, Steffen Jockusch, Malcolm D. E. Forbes, Jayaraman Sivaguru
Summary: Aryl-maleimides undergo a novel [2+4]-photodimerization instead of the expected [2+2]-photodimerization, and the stereochemistry of the photodimer formed complements the product observed under thermal conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Yaakov Weiss, Steffen Jockusch, Janne M. Koornneef, Oded Elazar, Gareth R. Davies
Summary: This study applied a new laser ablation technique combined with mass spectrometry measurements to analyze trace elements and radiogenic isotopes in high-density fluid microinclusion-bearing diamonds. The results showed that the new technique produced enough material for quantitative analysis of rare-earth elements and revealed that HDF microinclusions within individual diamonds are rather homogeneous in their isotopic composition.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Biochemistry & Molecular Biology
Jayaraman Sivaguru, Thorsten Bach, Vaidhyanathan Ramamurthy
Summary: This perspective clarifies the terminology used for different [2 +2] photocycloaddition processes and aims to establish a standard to assist researchers in using the correct terminologies.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
Review
Chemistry, Multidisciplinary
Sunil Kumar Kandappa, Lakshmy Kannadi Valloli, Sapna Ahuja, Jayachandran Parthiban, J. Sivaguru
Summary: This review discusses the excited state characteristics of imines and the processes governing their photochemical and photophysical properties, as well as pathways for deactivation and types of photochemical reactions. It also highlights recent strategies developed to address fundamental issues in the aza Paterno-Buchi reaction.
CHEMICAL SOCIETY REVIEWS
(2021)
