Article
Biochemistry & Molecular Biology
Alexey N. Bilyachenko, Victor N. Khrustalev, Evgenii I. Gutsul, Anna Y. Zueva, Alexander A. Korlyukov, Lidia S. Shul'pina, Nikolay S. Ikonnikov, Pavel V. Dorovatovskii, Dmitri Gelman, Elena S. Shubina, Georgiy B. Shul'pin
Summary: A series of phenylsilsesquioxane-benzoate heptacopper complexes were synthesized and characterized by X-ray crystallography. Complex 1 was formed through the spontaneous oxidation of toluene, while complexes 2 and 3 were obtained through directed self-assembly using benzoic acid as a reactant. Complex 3 exhibited high activity in the oxidation of alcohols.
Article
Green & Sustainable Science & Technology
Jane Weng Yee Lee, Wen Yi Chia, Wee-Jun Ong, Wai Yan Cheah, Siew Shee Lim, Kit Wayne Chew
Summary: This paper reviews the advanced transesterification process for biodiesel production, including in-situ transesterification, heating assisted methods, and operating factors. The use of different types of catalysts is also discussed. These studies contribute to increased yield and quality of biodiesel.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Inorganic & Nuclear
Ilker Avan, Ibrahim Kani, Leyla Calikusu
Summary: Homoleptic bis(dipyrrinato)zinc(II) complexes, (Dprm)2-Zn and (EDprm)2-Zn, were synthesized using two different dipyrrinato ligands. X-ray crystal structures revealed that these complexes are four-coordinate with distorted tetrahedral geometry. The catalytic activities of these complexes towards the oxidation of various alcohols were investigated, showing high catalytic activity in acetonitrile at 70 degrees C.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Jia-Hui Chen, Jia-Hui Lu, Xiao-Lu Pu, Li Chen, Yu-Zhong Wang
Summary: In this study, we report a novel approach to prepare flame-retardant epoxy vitrimers with rapid recycling and multiple shape memory effects by introducing dynamic ester-linkages with catalytic transesterification activity into the crosslinking networks of epoxy resin (EP). The synthesized vitrimers exhibited high Tg, desirable thermal stability, excellent flame retardancy, and high malleability. The dynamic transesterification network also allowed the vitrimers to access multiple shape memory effect.
Article
Engineering, Environmental
Adeyinka Sikiru Yusuff, Afeez Olayinka Gbadamosi, Lekan Taofeek Popoola
Summary: This study developed a new eco-friendly solid catalyst from anthill-zinc modification for methanolysis of low-grade feedstock to produce biodiesel. The optimized conditions for the reaction resulted in a high biodiesel yield of 83.16%, showing good agreement with the predicted value. The catalyst exhibited better stability after being regenerated and reused for six cycles, indicating its potential for economical biofuel production from waste products.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Zhongyi Cheng, Shijin Jiang, Zhemin Zhou
Summary: This study identified a potential gating residue, beta Leu48, in a thermophilic NHase from an extremophile, which can enhance the enzymatic activity towards various pyridine and pyrazine nitriles. The mutation showed a significant increase in specific activity, suggesting great potential for industrial production of high-value compounds. Structural analysis revealed that the mutant residue could form a hydrogen bond that expands the substrate access tunnel entrance and accelerates substrate migration.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)
Article
Biotechnology & Applied Microbiology
Priyanka V. Jawale, Bhalchandra M. Bhanage
Summary: The study focused on analyzing reaction kinetics and mechanism for synthesizing propyl benzoate in solvent-free conditions, immobilizing lipase on HPMC and PVA polymer blend, with CCL showing excellent activity. Optimizing reaction conditions and calculating kinetic parameters revealed that propyl benzoate synthesis using immobilized CCL followed the ternary complex model.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Fan Tang, Wen-Cui Li, Lei He, Dongqi Wang, An-Hui Lu
Summary: This study reports a highly efficient zinc hydroxyapatite catalyst for the direct conversion of ethanol to aromatic alcohols. The catalyst exhibits the highest specific rate among all reported literature. The dehydrogenation and hydrogenation reactions of ethanol occur at the zinc site, and substituting zinc for calcium can lower the energy barrier for ethanol dehydrogenation. This work provides a strategy for the synthesis of high value-added aromatic alcohols using sustainable methods.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
David Kocian, Martin Hajek, Ales Vavra, Karel Frolich, Jaroslav Kocik
Summary: The Mg-Al mixed oxides is an attractive acid-base catalyst with various activity, and impurities such as sodium ions can significantly affect the catalytic performance. The transformation of sodium species during synthesis can influence the transesterification reaction, increasing the ester yield. Additionally, the presence of sodium compounds can rapidly enhance the catalyst activity by changing the active sites.
MOLECULAR CATALYSIS
(2022)
Review
Energy & Fuels
Rida Nayab, Muhammad Imran, Muhammad Ramzan, Muhammad Tariq, Muhammad Babar Taj, Muhammad Nadeem Akhtar, Hafiz M. N. Iqbal
Summary: Biodiesel, as a promising alternative fuel, has been thoroughly reviewed in this paper, covering aspects such as feedstocks, production methods, properties, advantages, disadvantages, economic viability, and future prospects.
Article
Multidisciplinary Sciences
Kommireddy Vasu, Iyappan Ramachandiran, Fulvia Terenzi, Debjit Khan, Arnab China, Krishnendu Khan, Aayushi Chechi, Camelia Baleanu-Gogonea, Valentin Gogonea, Paul L. Fox
Summary: The study reveals the critical role of the ZBD in determining the activity of ProRS and the stability of GluProRS, with disruptions of the ZBD leading to a reduction in GluProRS canonical function.
Article
Chemistry, Inorganic & Nuclear
Hui Wen, Wen-Juan Zhang, Ze-Jiu Diao, Wei Liu, Guoliang Liu, Chen Gu, Tao Yang, Hang-Ou Qi, Lin-Bing Sun
Summary: For the first time, smart solid base catalysts were developed by anchoring photoresponsive azobenzene motifs onto UiO-66-NH2. The catalytic activity could be tailored by changing the steric hindrance of the catalysts through the isomerization of azobenzene motifs under UV and visible light irradiation.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Yingjie Gao, Gaofeng Li, Feng Wang, Jun Chu, Pu Yu, Baoshan Wang, Hui Zhan, Zhiping Song
Summary: Despite challenges in the field, the organic cathode material TAPQ, with its easily-synthesized nature and novel structure, demonstrated excellent electrochemical performance and a clear H+/Zn2+ co-insertion mechanism. This provides important insights for further development of organic cathode materials for ARZBs towards practical applications.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Materials Science, Multidisciplinary
Vaishali Kale, Y. M. Hunge, Shalaka A. Kamble, Madhuri Deshmukh, S. Bhoraskar, V. L. Mathe
Summary: This paper reports the single-step synthesis of ZnO-ZnWO4 nanocomposites using thermal plasma route, with X-ray diffraction and Raman spectroscopic techniques used to analyze the composite phases. The optical properties and photocatalytic efficiency of the synthesized product were studied, showing a high degradation rate of Crystal Violet dye. These nanocomposites exhibited a significant improvement in photocatalytic response compared to pure ZnO nanoparticles under sunlight radiation.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Mukesh Eknath Shirbhate, Seongyeon Kwon, Ayoung Song, Seungha Kim, Dayeh Kim, Haofei Huang, Youngmee Kim, Hanna Lee, Sung-Jin Kim, Mu-Hyun Baik, Juyoung Yoon, Kwan Mook Kim
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Sung Eun Lee, Azam Nasirian, Ye Eun Kim, Pegah Tavakoli Fard, Youngmee Kim, Byeongmoon Jeong, Sung-Jin Kim, Jin-Ook Baeg, Jinheung Kim
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Multidisciplinary Sciences
Haofei Huang, Yingji Jin, Mukesh E. Shirbhate, Dayoung Kang, Misun Choi, Qian Chen, Youngmee Kim, Sung-Jin Kim, Il-Suk Byun, Ming Wang, Jean Bouffard, Seong Kyu Kim, Kwan Mook Kim
Summary: The study presents an alternative method for the enantioselective conversion of amino acids using enantioselective extraction coupled with racemization. A bulky extractant facilitates the rapid, reversible, and enantioselective formation of hydrophobic extractable imines with amino acids.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Kihak Gwon, Youngmee Kim, Hyunjun Cho, Seonhwa Lee, So-Hyeon Yang, Sung-Jin Kim, Do Nam Lee
Summary: The research shows that PS@Cu-MOF formed by embedding antibacterial Cu-MOF in PS via hydrosilylation reaction exhibits excellent bactericidal activity, low cytotoxicity, and high stability. Its physical and thermal properties are similar to the control polymer, indicating great potential for medicinal applications.
Article
Chemistry, Multidisciplinary
Hyun-Chul Kim, Jongho Yoon, Sukbin Yoon, Youngmee Kim, Suk Joong Lee, Seong Huh
Summary: N-doped porous metal-organic framework derived carbons were synthesized and activated with KOH, resulting in improved gas sorption and electrochemical capacitive properties. The N-doped MDC-700-2KOH showed high specific capacitance and specific energy, as well as excellent cycling performance.
Article
Chemistry, Multidisciplinary
Sohyeon Yang, Mayura Veerana, Nannan Yu, Wirinthip Ketya, Gyungsoon Park, Sungjin Kim, Youngmee Kim
Summary: In this study, a three-dimensional copper metal organic framework (Cu(AZPY)-MOF) containing 4,4’-azopyridine (AZPY) was synthesized and shown to have higher antifungal activity compared to Cu-MOF.
APPLIED SCIENCES-BASEL
(2022)
Article
Biochemistry & Molecular Biology
Do Nam Lee, Yeong Rim Kim, Sohyeon Yang, Ngoc Minh Tran, Bong Joo Park, Su Jung Lee, Youngmee Kim, Hyojong Yoo, Sung-Jin Kim, Jae Ho Shin
Summary: In this study, micro-sized and nano-sized Cu-BTC MOFs were prepared and their NO storage and release properties were found to be morphology dependent. Control of hydration degree and morphology improved the NO release characteristics significantly. The nano-sized NO-loaded Cu-BTC met the requirements for clinical usage and exhibited significant antibacterial activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
In-Hwan Choi, Ja-Min Gu, Hyun-Chul Kim, Youngmee Kim, Seong Huh
Summary: A new three-dimensional Zn-MOF material with excellent gas sorption abilities has been synthesized.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Organic
Seungjin Lee, In Guk Park, Jin Won Choi, Jin Young Son, Jin Woo Lee, Jae-Seoun Hur, Youngmee Kim, Sang-Jip Nam, Hahk-Soo Kang, Stephen T. Deyrup, Minsoo Noh, Sang Hee Shim
Summary: Three unprecedented caged xanthone [6,6,6,6,6] polyketides, Daldipyrenones A-C (1-3), were discovered from an endolichenic fungus, Daldinia pyrenaica 047188. The structures of 1-3 were determined using spectroscopic analysis and chemical derivatization. Daldipyrenones are likely formed by the combination of a chromane biosynthesis intermediate and a spiro-azaphilone through radical coupling or Michael addition, resulting in the formation of a bicyclo[2.2.2]octane ring. Genome sequencing revealed two biosynthetic gene clusters responsible for the formation of two biosynthetic intermediates, suggesting a proposed biosynthetic pathway. Daldipyrenone A (1) exhibited significant antimelanogenic activity and moderate adiponectin-secretion promoting activity with lower EC50 values than positive controls.
Article
Nanoscience & Nanotechnology
Do Nam Lee, Yeong Rim Kim, Youngmee Kim, Bong Joo Park, Su Jung Lee, Sung-Jin Kim, Jae Ho Shin
Summary: Metal-organic frameworks (MOFs) can serve as potential scaffolds for therapeutic nitric oxide (NO) delivery. The researchers achieved controlled release of therapeutic NO by loading it onto Cu-MOF, which exhibited good stability and anticancer activity.
ACS APPLIED BIO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sukbin Yoon, In-Hwan Choi, Youngmee Kim, Seong Huh
Summary: The diethylammonium counter-cations of InBTB MOF can be effectively exchanged with cationic trans-[Co(en)(2)Cl-2](+) complex ions through a simple cation-exchange process. The heterogenized trans-[Co(en)(2)Cl-2]@InBTB catalytic system showed high recyclability for hydrogen peroxide decomposition and exhibited trans-cis isomerization. The catalytic ability of trans-[Co(en)(2)Cl-2]@InBTB could be maintained up to seven times of recycling.
Article
Chemistry, Multidisciplinary
Arkalekha Mandal, Youngmee Kim, Sung-Jin Kim, JaeHong Park
Summary: Charge transfer cocrystallization with an electron-rich donor and an electron-deficient acceptor is a useful method for preparing luminescent organic electronic materials. The properties of charge transfer cocrystals depend on the choice of donor and acceptor, as well as the supramolecular network. Theoretical calculations predict that the new coronene:TCNB polymorph exhibits ambipolar semiconductor behavior.
Article
Chemistry, Multidisciplinary
Giang Thi Ly, Jun Choi, Youngmee Kim, Yuna Kim, Sujin Kim, So-Hyeon Yang, Sung-Jin Kim
Summary: A novel one-dimensional lead iodide hybrid compound with hexarhenium cluster cations has been synthesized and characterized, showing strong broad-band emission and excellent photoluminescent properties. This new material has potential for optoelectronic applications and introduces a new class of lead iodide hybrids with inorganic cluster cations.
Article
Chemistry, Multidisciplinary
Mayura Veerana, Hyun-Chul Kim, Sarmistha Mitra, Bishwa Chandra Adhikari, Gyungsoon Park, Seong Huh, Sung-Jin Kim, Youngmee Kim
Summary: Three-dimensional copper metal organic frameworks with different ligands were synthesized and found to exhibit antifungal effects and induce apoptosis-like death of fungi, possibly due to elevated intracellular reactive species levels.
Article
Nanoscience & Nanotechnology
Sujie Qi, Sangin Kim, Van-Nghia Nguyen, Youngmee Kim, Guangle Niu, Gyoungmi Kim, Sung-Jin Kim, Sungnam Park, Juyoung Yoon
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Inorganic & Nuclear
Masoume Malmir, Majid M. Heravi, Zahra Yekke-Ghasemi, Masoud Mirzaei
Summary: In this study, a tri-component composite consisting of Fe3O4 nanoparticles, Keggin-type polyoxometalate, and graphene oxide was prepared and investigated as a catalyst for the oxidation of sulfides to sulfoxides. The catalyst showed excellent stability, high yields, and recyclability, making it a promising choice for organic-inorganic hybrid catalytic reactions conducted under mild conditions.
Article
Chemistry, Inorganic & Nuclear
Samuel D. Juarez-Escamilla, Sriloy Dey, Bruno Donnadieu, T. Keith Hollis
Summary: In this study, a bidentate Mo complex was synthesized using metalation and transmetalation methodology. The synthesis was optimized to achieve a high yield. The crystal structure of the bidentate complex was determined. Additionally, alternative forms of ligands were discovered in the reaction.
Article
Chemistry, Inorganic & Nuclear
Mohamed H. Abdel-Rhman, Ghada Samir, Mostafa A. Hussien, Nasser M. Hosny
Summary: This study investigated the dissolution performance of hydrazine carbonate solution on zirconium dibutyl phosphate (Zr-DBP), and found that hydrazine carbonate solution could promote the dissolution of Zr-DBP. The effects of dissolution temperature and hydrogen peroxide concentration on the dissolution efficiency were also explored, and the corrosion effect on stainless steel by hydrazine carbonate solution was studied.
Article
Chemistry, Inorganic & Nuclear
Qiaofang Fu, Fangyu Tan, Wu Ying
Summary: This study successfully prepared vermiculite/g-C3N4/TiO2 composites and found that under specific conditions, the composites exhibited excellent degradation effects, with a high degradation rate for methylene blue. Additionally, the composites were able to enhance surface area, reduce carrier loading rate, improve light energy utilization, and enhance durability.
Article
Chemistry, Inorganic & Nuclear
Annabelle G. W. Hodson, Robert T. Mason
Summary: Functionalised polystyrene resins have been found to be efficient catalysts in the synthesis of specific complexes, with the conversion rate controlled by the polymer structure. The addition of amines or amino acids can further yield substituted 13-butadienyl complexes, which have been analyzed by NMR.
Article
Chemistry, Inorganic & Nuclear
C. Kavitha, S. Anbarasan, P. Subramaniam
Summary: The sulfoxidation of PMAAs by the oxo(salen)chromium(V) complex in aqueous acetonitrile medium was studied. The rate of the reaction is influenced by the polarity of the medium and the substituents on PMAA, with electron donating substituents accelerating the reaction and electron withdrawing substituents retarding the reaction.
Article
Chemistry, Inorganic & Nuclear
Qiang-Qiang Liu, Mithun Kumar Ghosh, Shu-Lan Cai, Xiao-Hong Liu, Lu Lu, Mohd. Muddassir, Tanmay Kumar Ghorai, Jun Wang
Summary: Three newly developed coordination polymers (CPs) with semiconducting properties were synthesized using hydrothermal methods. These CPs exhibit superior photocatalytic activity and can degrade organic pollutants effectively.
Article
Chemistry, Inorganic & Nuclear
Mehrnaz Aliahmadi, Ali Nemati Kharat, Jan Janczak
Summary: This study proposes a method for synthesizing allyl alcohol using cost-effective and renewable bio-resource glycerol. By utilizing catalysts, alcohol as a solvent, and a reducing agent, allyl alcohol with an efficiency of 100% was obtained. The structures of the newly synthesized complexes were determined using X-ray single crystallography.
Article
Chemistry, Inorganic & Nuclear
Ji-Yan Gao, Nan Zhang, Dong-Sheng Huang, Xiang-Rong Liu, Zai-Wen Yang, Shun-Sheng Zhao
Summary: Two new transition metal complexes I and II were synthesized and characterized. The complexes exhibited strong thermal stabilities and showed effective binding to CT-DNA and BSA. Complex II exhibited stronger inhibition activity against P. aeruginosa than gentamicin sulfate. These complexes have potential applications in drug research.
Article
Chemistry, Inorganic & Nuclear
Rishabh Ujjval, Hilal Ahmad Khan, Chinnappan Sivasankar, Natesan Thirupathi
Summary: In this study, a rigid 2-aminobenzimidazole type guanidine and its platinum complexes were synthesized through a series of reactions and characterized by various physical and chemical methods. The reaction mechanism was also explained through DFT calculations.
Article
Chemistry, Inorganic & Nuclear
Marcelo Carpes Nunes, Thais Zaboenco, Vinicius Kemper Melara, Gabriel Barros Baptistella, Andre Luiz Barboza Formiga, Andersson Barison, Fabio Souza Nunes
Summary: A new luminescent molecular thermometer has been developed, which uses the spin-crossover equilibrium of a nickelcyclen derivative to measure temperature. The sensor shows high sensitivity and accuracy.
Article
Chemistry, Inorganic & Nuclear
Yuyu Shan, Zhenqin Zhao, Xia Zhang, Zhan Wu, Xiu-Ling Li
Summary: In this study, a new bridging ligand was synthesized through refluxing, and two mononuclear Cu(I) complexes and two trinuclear Cu(I)-Eu(III) complexes were obtained through self-assembly. The Cu(I) antenna chromophores successfully transferred energy to the Eu(III) centers, achieving sensitized Eu(III) luminescence.
Article
Chemistry, Inorganic & Nuclear
Gabriela Sanchez-Lecuona, Mayra C. Vazquez-Nunez, Bruno Donnadieu, Miguel A. Munoz-Hernandez, Virginia Montiel-Palma
Summary: The reaction of RuHCl(PPh3)3 with GaMe3 has been studied and the obtained complexes were analyzed in detail. The results indicate the formation of a Ru-Ga bond, suggesting the generation of an in situ formed ambiphilic phosphinogallyl ligand. This is of significance for understanding the interaction between metal-halogen bonds and metal-small molecule bonds.
Article
Chemistry, Inorganic & Nuclear
Sevil Sener, Nursel Acar, Fatih Dumludag
Summary: The synthesis, characterization, spectroscopic and bonding features of a new Co (II) phthalocyanine compound containing two thiocarbohydrazone groups were explained. The compound showed semiconductor properties and potential as a temperature sensor.
Article
Chemistry, Inorganic & Nuclear
Ledja B. O. Davi, Aryanna S. P. N. Costa, Mariana S. Silva, Adriana S. Ribeiro, Cintya D. A. E. S. Barbosa, Julio C. S. Da Silva, Dimas J. P. Lima, Daniela S. Anunciacao
Summary: In this study, a dansyl derivative sensor called o-PDDS was prepared and used for the detection of Al3+ ions in water. The o-PDDS sensor exhibited high sensitivity and linear response towards Al3+ ions. Experimental and computational studies confirmed a 1:1 stoichiometry ratio between o-PDDS and Al3+ ions. Real sample analysis demonstrated the selectivity and detection performance of the sensor, indicating its potential for field use.