Article
Chemistry, Multidisciplinary
Masataka Noguchi, Qiyue Mao, Atsuki Nakagami, Hiroaki Kitagishi
Summary: Iron(ii/iii) porphyrin/cyclodextrin inclusion complexes are used as hemoprotein models in vivo. Our study found that the iron(iii) porphyrin complex is spontaneously reduced to the iron(ii) state in mouse circulation. The reduced complex binds endogenous CO from carboxyhemoglobin and is excreted in urine. The natural reduction system is effective for synthetic heme-model compounds.
CHEMICAL COMMUNICATIONS
(2023)
Letter
Chemistry, Multidisciplinary
Jie-Ren Deng, David Bradley, Michael Jirasek, Harry L. Anderson, Martin D. Peeks
Summary: This research refutes a previous conclusion and provides experimental evidence for the global aromaticity of the oxidation states of a butadiyne-linked six-porphyrin nanoring. NMR data directly reveal the presence of ring currents, alleviating the need for analysis by density functional theory (DFT). DFT calculations support the experimental results.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Po-Chun Yang, Kuan-Po Yu, Chi-Tien Hsieh, Junjie Zou, Chia-Te Fang, Hsin-Kuan Liu, Chih-Wen Pao, Liang Deng, Mu-Jeng Cheng, Chun-Yi Lin
Summary: High-spin, late transition metal imido complexes have attracted significant interest due to their group transfer reactivity and catalytic C-H activation of organic substrates. The resonance delocalization of the imido radical onto the mesityl ring significantly increases stability and reduces reactivity towards hydrogen atom transfer reagents.
Letter
Chemistry, Multidisciplinary
Irene Casademont-Reig, Luis Soriano-Agueda, Eloy Ramos-Cordoba, Miquel Torrent-Sucarrat, Eduard Matito
Summary: This article challenges our conclusions on the aromaticity of a six-porphyrin nanoring linked by a butadiyne, based on experimental H-1-NMR data and calculations using the BLYP35 functional. The authors caution against relying solely on BLYP35 and argue that the indirect evidence of ring current from experimental H-1-NMR data is not a definitive proof of aromaticity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Anna C. Brezny, Hannah S. Nedzbala, James M. Mayer
Summary: In Fe(porphyrin)-catalysed oxygen reduction, multiple mechanisms for H2O2 formation are accessible, dictated by the porphyrin secondary structure. This approach can be applied to other electrocatalytic processes and offers insights into determining the selectivity-determining steps.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jinyoung Oh, Dahyun Kang, Sugyeong Hong, Sun H. Kim, Jun-Ho Choi, Jiwon Seo
Summary: Siderophore-mimicking macrocyclic peptoids were synthesized and studied for their stable catecholate-iron complex structure. Peptoid 3 showed comparable iron binding affinity to deferoxamine, with enhanced stability upon air exposure, as determined by UV-vis, fluorescence, EPR spectroscopies, and DFT calculations.
DALTON TRANSACTIONS
(2021)
Article
Electrochemistry
Monirah H. Alzabny, Raoudha Soury, Khalaf M. Alenezi
Summary: In this study, comparative experiments were conducted on the electrochemical reduction of protons to molecular hydrogen using two different metalloporphyrin compounds as catalysts. Results showed that the iron-containing compound exhibited higher activity, but the manganese-containing compound had a faster reaction rate.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Polymer Science
Anum Hayat, Mohammad Saeed Iqbal, Naveed Ahmad, Nabil K. Alruwaili, Atta Ur Rehman
Summary: An iron (III) complex with rhamnoxylan, a hemicellulose from Salvia plebeia seeds, was synthesized and exhibited good electrical and magnetic properties. In addition, the complex showed equivalent efficacy as a hematinic for treating iron deficiency anemia in a rabbit model compared to iron protein succinylate. Therefore, iron(III)-rhamnoxylan holds potential as a hematinic for treatment of iron deficiency anemia.
Article
Chemistry, Multidisciplinary
Chang-Chih Hsieh, Cheng-Yao Li, Ming-Hsi Chiang, Yih-Chern Horng
Summary: In this study, a catalytic intramolecular N-S bond formation method for synthesizing BIT compounds was reported. The method involved the use of an Fe(III) dithiolate catalyst and easily prepared disulfide precursors activated by O-2. Interestingly, substituting O-2 with the milder O-donor oxidant ONMe3 enhanced the catalytic performance.
CHEMICAL COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Nelli H. Karapetyan, Gayane V. Ananyan, Yeva B. Dalyan
Summary: The complex formation between ZnTOEPyP4 and cancer DNA was studied compared to healthy DNA, showing that the binding constant and exclusion parameter are pH-dependent, with a higher value observed for cancer DNA.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2021)
Article
Chemistry, Physical
Christopher J. Miller, Yingyue Chang, Christina Wegeberg, Christine J. McKenzie, T. David Waite
Summary: This study demonstrates that the activation of [Fe-III(OH)(tpena)](+) by H2O2 proceeds by the formation of [Fe-III(OOH)(tpena)](+), which undergoes two major reactions to produce HO· and [Fe-IV(O)(tpena)](+). The production of HO· was quantified by a chemiluminescence method, showing that [Fe-IV(O)(tpena)](+) is produced in much larger yields than HO·. Additionally, the study indicates that a reactive high-valent iron-oxo species and HO· can be generated under mild, aqueous ambient conditions, which represents a significant contribution to biomimetic nonheme chemistry in water.
Article
Chemistry, Multidisciplinary
Yixun Gao, Jianqiang Wang, Yancong Feng, Nengjie Cao, Hao Li, Nicolaas Frans de Rooij, Ahmad Umar, Paddy J. French, Yao Wang, Guofu Zhou
Summary: Developing efficient room-temperature sensing materials and sensors for nitric oxide (NO) gas, a biomarker used in monitoring inflammatory respiratory diseases, is a challenging task. The introduction of Hemin into nitrogen-doped reduced graphene oxide (N-rGO) to obtain HNG-ethanol results in a novel sensing material with superior gas sensing properties towards NO gas. The HNG-ethanol sensor demonstrates high selectivity, humidity resistance, stability, and a deep understanding of gas sensing mechanisms, providing guidance for future research on graphene-iron derivatives in sensing materials.
Article
Polymer Science
Yilin Cao, Tomoe Takasaki, Satoshi Yamashita, Yasuhisa Mizutani, Akira Harada, Hiroyasu Yamaguchi
Summary: Inspired by natural photosynthetic system, this research used artificial polymer polyvinylpyrrolidone (PVP) to control the photoinduced electron transfer, achieving a controlled effect on the electron transfer process.
Article
Chemistry, Physical
Sawako Yokota, Yuna Suzuki, Sachiko Yanagisawa, Takashi Ogura, Shunsuke Nozawa, Masahiko Hada, Hiroshi Fujii
Summary: This study successfully prepared and characterized bis-hypochlorite adducts of iron(III) porphyrin complexes, demonstrating that as the electron-donor effect of the ligands becomes stronger, the hypochlorite complex becomes more unstable and reactive. Additionally, spectroscopic studies and density functional theory calculations provided insights into the weakening Fe-OCl and O-Cl bonds in the iron-bound hypochlorite complex, leading to increased reactivity.
Article
Chemistry, Physical
Jared S. Stanley, Xinran S. Wang, Jenny Y. Yang
Summary: This study reports a new method for electrocatalytic deoxygenation of N2O to N-2, and finds that hydrogen-bond donors play a critical role in accelerating the process of N2O activation.
Article
Chemistry, Inorganic & Nuclear
Vaibhav Bedi, Dipendu Mandal, Zahid Hussain, Shi-Ming Chen, Yile Wu, Zheng-Wang Qu, Stefan Grimme, Douglas W. Stephan
Summary: The reaction of (tBuO(2)CN)(2) with 9-BBN leads to the formation of a bicyclic heterocyclic compound, while its reactions with BF3 or [Et3Si][B(C6F5)(4)] result in the isolation of different compounds. Computational studies reveal that the steric and electronic properties of the Lewis acid are important in the formation of one of the compounds.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chisa Itoh, Haruka Yoshino, Taku Kitayama, Wataru Kosaka, Hitoshi Miyasaka
Summary: A new synthetic route for constructing functional paddlewheel diruthenium(II,II) complexes was developed, utilizing Schiff base condensation reactions. The attached Schiff base groups significantly affected the electronic states of the resulting complexes, as revealed by cyclic voltammetry and DFT calculations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Danrui Ni, Haozhe Wang, Xianghan Xu, Weiwei Xie, Robert J. Cava
Summary: A layered rhombohedral polymorph of indium(iii) triiodide is synthesized at high pressure and temperature. It has an orange color, which is different from ambient pressure InI3, which has a monoclinic molecular structure and a light-yellow color.
DALTON TRANSACTIONS
(2024)
Review
Chemistry, Inorganic & Nuclear
Juan Carlos Perez-Sanchez, Raquel P. Herrera, M. Concepcion Gimeno
Summary: Gold(II) complexes have been less utilized in catalysis compared to their gold(I) and gold(III) counterparts. However, gold(II) complexes offer potential in homo-coupling and cross-coupling reactions, as they are more easily accessible through simplified oxidation and reduction processes. Gold(II) exhibits characteristics of both soft acid gold(I) and hard acid gold(III). This review explores the unique reactivity and potential applications of gold(II) species, highlighting their significance in catalytic transformations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Nighat Yousuf, Yanping Ma, Qaiser Mahmood, Wenjuan Zhang, Yizhou Wang, Hassan Saeed, Wen-Hua Sun
Summary: In this study, a series of structurally rigid cyclooctyl-fused iminopyridine iron complexes were synthesized and used with methylaluminoxane for isoprene polymerization. The extent of steric hindrance of the ligand framework was found to significantly affect catalytic performance, with less hindrance leading to better activity and stability.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chenghao Song, Huiwei Du, Menglei Xu, Jie Yang, Xinyu Zhang, Jungan Wang, Yuanfang Zhang, Chengjun Gu, Rui Li, Tao Hong, Jingji Zhang, Jiangying Wang, Yongchun Ye
Summary: This study improves the performance of perovskite solar cells by using a dual-hole transport layer strategy. This strategy enhances the charge transfer efficiency of the transport layer, reduces charge recombination, and improves the quality of the perovskite film layer. Ultimately, the stability of the device is enhanced.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mahender Singh, Aakash Yadav, Ranjit Singh, Chullikkattil P. Pradeep
Summary: A new aryl selenonium polyoxometalate hybrid was developed and compared with an aryl sulfonium polyoxometalate hybrid in terms of their photocatalytic properties. It was found that the aryl selenonium hybrid exhibited better catalytic performance, which could be attributed to the larger atomic radii of selenium stabilizing the photogenerated electron-hole pair more efficiently. Additionally, the generation of elemental selenium through cleavage of C-Se bonds during catalysis was observed.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Yuhan Xie, Boyu Dong, Xuemin Wang, Siyuan Wang, Jinxi Chen, Yongbing Lou
Summary: This study successfully fabricated visible-light-responsive three-dimensional core-shell CoSe2/ZnIn2S4 heterostructures and achieved attractive activity in photocatalytic hydrogen evolution. The presence of CoSe2 improved light absorption and accelerated charge transfer kinetics. The strong interaction between CoSe2 and ZnIn2S4 reduced charge recombination, further enhancing photocatalytic activity for hydrogen evolution.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Andre L. de O. Batista, Joao Marcos T. Palheta, Mauricio J. Piotrowski, Celso R. C. Rego, Diego Guedes-Sobrinho, Alexandre C. Dias
Summary: This study presents a simulation protocol that provides a solid foundation for exploring two-dimensional materials. Using the TiBr2 2H monolayer as an example, the study reveals its promising properties for optoelectronic and valleytronic applications, including its stability, spin-orbit coupling effects, and optical helicity selection rule.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Jiang Jiang, Zi-Wei Li, Zhi-Zhuan Zhang, Bin Tan, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this work, two metal organic frameworks (MOFs) containing {Cu2I2} clusters, Eu-CuI-INA and Sr-K-CuI-INA, were synthesized and characterized. Both materials have a three-dimensional structure with {Cu2I2} clusters coordinated by INA(-) ligands and Eu3+ or Sr2+ ions. The Sr-K-CuI-INA material exhibited sensitive fluorescence sensing behaviors towards cysteine and nitro-bearing molecules, showing potential applications in bio and explosive molecule sensing. This work provides a good reference for designing fluorescent MOF probes containing CuI molecules.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhiya Lin, Jiasheng Wu, Qianwen Ye, Yulong Chen, Hai Jia, Xiaohui Huang, Shaoming Ying
Summary: Na-ion batteries (NIBs) have attracted great interest as a potential technology for grid-scale energy storage due to the wide distribution, low cost, and environmental friendliness of sodium resources. However, their implementation is hindered by low rate capability and cycling stability caused by the large ionic size of Na+. In this study, a three-dimensional nanoarchitectured coral-like CoSe2@N-doped carbon (CL-CoSe2@NC) was synthesized, and it exhibited improved sodium storage properties with better electrode kinetics and a stable SEI film.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Ya-Qiong Zhang, Yu Zhang, Guoping Zeng, Rong-Zhen Liao, Man Li
Summary: The mechanism and selectivity of CO2 reduction under visible light were investigated using density functional calculations. The results showed that a tetradentate PNNP-type Iridium(III) complex exhibited high activity and selectivity in the reaction.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Sanyukta Ghosh, Shubhanth Jain, Soumya Ranjan Mishra, Gerda Rogl, Peter Rogl, Ernst Bauer, B. S. Murty, A. Govindaraj, Ramesh Chandra Mallik
Summary: In this study, reduced graphene oxide (rGO) was uniformly dispersed in the In0.5Co4Sb12 bulk material by ultrasonication, which effectively reduced the lattice thermal conductivity and improved the thermoelectric efficiency.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mika Takeuchi, Yutaka Amao
Summary: This study developed an effective visible-light driven system for fumaric acid production using renewable resources such as biomass derivatives, providing an alternative to the current petroleum-based synthesis methods.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Juan Jian, Meiting Wang, Zhuo Wang, Jingwen Meng, Yuqin Yang, Limin Chang
Summary: Developing low-cost and self-supported bifunctional catalysts is crucial for highly efficient water splitting devices. In this study, nano-NiFe2O4 was directly grown onto iron foil surface and Sn4+ was introduced into the NiFe2O4. The resulting Sn-NiFe2O4/IF showed low overpotentials and high current densities during oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), making it a promising catalyst for large-scale hydrogen production.
DALTON TRANSACTIONS
(2024)