Article
Chemistry, Inorganic & Nuclear
Jerome Long, Aleksei O. Tolpygin, Ekaterina Mamontova, Konstantin A. Lyssenko, Dan Liu, Munirah D. Albaqami, Liviu F. Chibotaru, Yannick Guari, Joulia Larionova, Alexander A. Trifonov
Summary: A new octahedral luminescent Single-Molecule Magnet (SMM) with massive crystal-field splitting and an anisotropic barrier of 1385 cm(-1) is reported, with a unique mechanism behind the high blocking barrier revealed through magnetic measurements and ab initio analysis. The novel mechanism involves quenching of one-phonon transitions between low-lying crystal-field multiplets, forcing relaxation to proceed through a fourth doublet. The short relaxation time observed is attributed to non-axial anisotropy and tunnelling relaxation path via interaction with nuclear spins.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Kaiyuan Yao, Mary S. Collins, Kara M. Nell, Edward S. Barnard, Nicholas J. Borys, Tevye Kuykendall, J. Nathan Hohman, P. James Schuck
Summary: This study examines the strongly excitonic optical properties of 2D semiconductors, specifically focusing on silver selenide monolayers. The research demonstrates the potential of utilizing multiquantum-well structures for enhancing light matter interactions and constructing optoelectronic and quantum excitonic devices. The efficient blue photoluminescence and ultrafast exciton radiative dynamics of the material highlight its promising characteristics for various applications.
Review
Chemistry, Inorganic & Nuclear
Jin-Hua Wang, Zhao-Yang Li, Masahiro Yamashita, Xian-He Bu
Summary: This article explores the latest developments in novel functional molecular-based magnetic materials, focusing on cyano-bridged transition-metal-based single-molecule magnets and single-chain magnets research. The review mainly discusses the construction of different molecular-magnetic materials based on the cyanide ligand's strong affinity for transition metals. Key topics include structural topologies, SMMs, SCMs, and important principles for constructing diverse magnetic materials.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Yu Fu, Swapnadeep Poddar, Beitao Ren, Ying Xie, Qianpeng Zhang, Daquan Zhang, Bryan Cao, Yunqi Tang, Yucheng Ding, Xiao Qiu, Lei Shu, Jin-Feng Liao, Dai-Bin Kuang, Zhiyong Fan
Summary: Color tunability of perovskite light-emitting diodes (PeLEDs) by mixed halide compositional engineering is achieved through strongly quantum-confined perovskite nanowires. The work successfully demonstrates the fabrication of color-tunable PeLEDs, particularly blue PeLEDs.
Article
Chemistry, Inorganic & Nuclear
Yue Cheng, Qi Liu, Zi-Yi Chen, Yuan-Zhu Zhang
Summary: The treatment of CoCl2 center dot 6H(2)O and tris(pyrazolyl-1-yl)borate tricyanoiron(III) anions at an elevated temperature resulted in two less-common pearl-chain-like compounds. Compound 1 exhibited typical single-chain magnet behavior with an effective energy barrier of 28.0 K, while compound 2 did not show Glauber dynamics despite their similar structures. Changes in the local coordination environments of cobalt ions and cyanide linkages were identified as contributing factors to the significant difference in their magnetic properties.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Chen Yang, Yilin Guo, Shuyao Zhou, Zhirong Liu, Zitong Liu, Deqing Zhang, Xuefeng Guo
Summary: A robust single-molecule light-emitting diode (SM-LED) is developed by integrating a fluorescent molecule into nanogapped graphene electrodes. The SM-LED exhibits high color purity, linear polarization, and tunable efficiency. It also achieves single-molecule Forster resonance energy transfer and can serve as a single-photon emitter for quantum computation and communication.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Maciej D. Korzynski, Zachariah J. Berkson, Boris Le Guennic, Olivier Cador, Christophe Coperet
Summary: Single-molecule magnets (SMMs) offer unmatched information storage density, potential applications in quantum computing and spintronics, and are mainly organometallic lanthanide complexes. However, the challenge lies in surface immobilization due to the sensitivity of magnetic properties to changes in electronic structure. This study successfully identifies siloxides on partially dehydroxylated silica surface as suitable replacements for typical ligand architectures, leading to a significant increase in magnetization relaxation times.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Selvakumar Arumugam, Bjoern Schwarz, Prathap Ravichandran, Sunil Kumar, Liviu Ungur, Kartik Chandra Mondal
Summary: This work investigates the dynamic magnetic properties of a complex [(Cp-Ar3)(4)(Dy2Cl4K2)-Cl-III]& BULL;3.5(C7H8) synthesized using a tri-aryl-substituted cyclopentadienyl ligand (Cp-Ar3). The Dy(III)-metallocene weakly couples via K2Cl4 and exhibits slow relaxation of magnetization below 14.5 K under zero applied dc field through KD3 energy levels with an energy barrier of 136.9/133.7 cm(-1) at the Dy sites. The coordination of two chloride ions at each Dy centre leads to geometrical distortion and reduction of the single-ion axial anisotropy energy barrier.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Yong-Wen Zhang, Jia-Ming Liang, Zheng-Liang Diao, Ji-Yang Chen, Wan-Yi Tan, Yan-Nan Qian, Lian-Gang Xiao, Yonggang Min
Summary: The introduction of a bifunctional phosphate molecule (DIDOPO) as a passivation agent effectively passivates defects in perovskite, leading to improved radiative recombination and enhanced efficiency of PeLEDs. Additionally, the improved morphology of perovskite film facilitates good contact with charge transport layers and reduces leakage current, resulting in improved device performance. The presence of DIDOPO also enhances moisture resistance of PeLEDs, maintaining high efficiency after storage in ambient atmosphere for 120 hours.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Haipeng Wu, Borui Guo, Xiao Han, Min Li, Bing Yin, Yongqiang Chen, Yongjun Bian, Hongshan Ke, Sanping Chen
Summary: In this study, three Dy(III) complexes were synthesized, and magnetic studies showed that two of the complexes are zero-field single-ion magnets while the other complex only exhibits slow magnetic relaxation under applied magnetic field. Ab initio electronic structure calculations revealed that equatorial halogen ligands play a crucial role in controlling the quantum tunnelling of magnetization and the energy barrier.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Shurong Li, Zhenzhang Weng, Linpeng Jiang, Rongjia Wei, Haifeng Su, Lasheng Long, Lansun Zheng, Xiangjian Kong
Summary: Three sandwich-like [Ln2Fe2(B-alpha-FeW9O34)2]10- clusters (Ln2Fe4, Ln = Dy (1), Ho (2), and Y (3)) were synthesized by reacting Na9[B-alpha-SbW9O33], Ln2O3, FeCl3 center dot 6H2O, and KH2PO4. The [B-alpha-FeW9O34]11- units were formed via the in situ conversion of lacunary polyoxometalates (POM) [B-alpha-SbW9O33]9- and the Ln3+ ions were generated from the slow dissolution of Ln2O3, both of which play important roles in the synthesis of Ln2Fe4. Ln2Fe4 is the first 3d-4f cluster assembled from d-metal heteroatom-containing POM. The Dy2Fe4 cluster exhibits single-molecule magnet properties with an 80 K energy barrier in an optimal DC field. Cyclic voltammetry tests and controlled-potential coulometry experiments show that the polyoxometalate Fe heteroatom in clusters 1-3 is also electrochemically active.
CHINESE CHEMICAL LETTERS
(2023)
Article
Optics
Davide Nigro, Marco Clementi, Camille-Sophie Bres, Marco Liscidini, Dario Gerace
Summary: Achieving single-photon nonlinearities in photonic devices by utilizing the intrinsic high-order susceptibilities of conventional materials is crucial for practical quantum photonic technologies. In this study, we demonstrate the achievement of this regime in a triply resonant integrated photonic device made of two coupled ring resonators, using a material platform with intrinsic third-order nonlinearity.
Article
Chemistry, Inorganic & Nuclear
Ting-Hai Yang, Shu-Fan Wang, Chen-Lan Lin, Xin Wang, Binglong Zhu, Dayu Wu
Summary: In this study, three novel lanthanoid-organic coordination networks were successfully synthesized through ionothermal reaction in ionic liquids, and their structures, photoluminescence, and magnetic properties were investigated. Compound 1 exhibited strong Tb-III emission with a remarkable quantum yield, while compound 2 displayed slow magnetic relaxation of magnetization.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Carlo Andrea Mattei, Vincent Montigaud, Frederic Gendron, Sandrine Denis-Quanquin, Vincent Dorcet, Nicolas Giraud, Francois Riobe, Gilles Argouarch, Olivier Maury, Boris Le Guennic, Olivier Cador, Claudia Lalli, Fabrice Pointillart
Summary: The study reports on an enantiopure coordination polymer involving a BINOL-derived bisphosphate ligand and demonstrates the formation of a mononuclear species in solution. The electronic circular dichroism signals were enhanced after metal coordination, and both polymeric and mononuclear structures exhibited field-induced Single-Molecule Magnet behavior. The HOMO -> LUMO transition of the ligand induced classical Dy(iii) emission at 77 K, correlating with the magnetic properties of the assembly.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Dayu Huang, Pan Zheng, Ziyong Cheng, Qianqian Yang, Youchao Kong, Qiuyun Ouyang, Hongzhou Lian, Jun Lin
Summary: A hydrothermal method is used to synthesize two different single crystal materials with different shapes and phases. These materials can emit deep blue light and pure blue light. The difference in the distribution of Cl energy states is found to be the reason for the difference in luminescence properties.
INORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Sofia Drakopoulou, Emmanouil Orfanakis, Ioulia Karagiannaki, Fragiskos Gaitis, Stavroula Skoulika, Andreas Papaioannou, George Boukouvalas, George Petropoulos, Vassilios Katsoudas, Renate Kontzedaki, Aggelos Philippidis, Aikaterini Zoumi, Marilena Dasenaki, Nikolaos S. Thomaidis, Michalis Velegrakis
Summary: This study compares and evaluates the quality and authenticity of Greek extra virgin olive oil (EVOO) using various analytical approaches and machine learning methods. It is the first study to apply different techniques from standard analysis, spectrometry, and optical spectroscopy to the same EVOO samples, providing important insights into the chemical profile of EVOO.
Article
Nanoscience & Nanotechnology
Sharali Malik, George E. Kostakis
Summary: Glassy carbon, a material with complex microstructure, is the subject of active research due to its different allotropes and various ordering effects. In this study, tubular glassy carbon microneedles with fullerene-like tips are formed using methane pyrolysis on alumina surfaces. Characterization techniques reveal the long-range order and graphitic nature of the material. This work provides new insights into the structure of glassy carbons and its potential applications in the field of neural engineering and acupuncture.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Thomais G. Tziotzi, Evangelos K. Andreou, Athanasios Mavromagoulos, Mark Murrie, Scott J. Dalgarno, Euan K. Brechin, Constantinos J. Milios
Summary: Reaction between Mn(NO3)(2)·6H2 O, Zn(NO3)(2)·6H2 O, H3L and pyrazole in MeOH under basic conditions leads to the formation of decanuclear complexes. These complexes exhibit dominant antiferromagnetic exchange interactions.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Emma Regincos Marti, Angelos B. Canaj, Tanu Sharma, Anna Celmina, Claire Wilson, Gopalan Rajaraman, Mark Murrie
Summary: The recently reported compound [(DyLF)-L-III]-(CF3SO3)(2)·H2O displays strong magnetic behavior and single-molecule magnet (SMM) properties. In this study, a series of [Ln(III)LF](CF3SO3)(2)·H2O compounds were systematically analyzed, and the slow relaxation of magnetization in Ce(III) and Nd(III) analogues was observed.
INORGANIC CHEMISTRY
(2022)
Review
Chemistry, Physical
Jonathan Farhi, Ioannis N. Lykakis, George E. Kostakis
Summary: This study summarizes the multicomponent reaction of aldehydes, amines, and alkynes, known as A(3) coupling, and discusses the application and impact of metal-based catalytic systems in this transformation. By classifying substrates, synthetic methods, and various variables, a valuable database is created.
Article
Chemistry, Inorganic & Nuclear
Gabrielle Audsley, Harry Carpenter, Nsikak B. Essien, James Lai-Morrice, Youssra Al-Hilaly, Louise C. Serpell, Geoffrey R. Akien, Graham J. Tizzard, Simon J. Coles, Cristina Pubill Ulldemolins, George E. Kostakis
Summary: Two propeller-shaped chiral CoIII3YIII complexes synthesized using fluorinated ligands were characterized by various techniques. These complexes were found to have sensing and discrimination abilities, which allowed for the development of an innovative 19F NMR chemosensory system. Control experiments and theoretical studies provided insights into the sensing mechanism, and the limitations of this method were discussed.
INORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Emmanouil Orfanakis, Aggeliki Koumentaki, Aikaterini Zoumi, Aggelos Philippidis, Peter C. Samartzis, Michalis Velegrakis
Summary: This study aims to detect benzo[a]pyrene residues in extra virgin olive oil using an easily adaptive optical methodology based on fluorescence spectroscopy, which does not require any sample pretreatment. The detection of benzo[a]pyrene even at low concentrations in the oil samples demonstrates the capability of fluorescence spectroscopy to ensure food safety.
Article
Chemistry, Multidisciplinary
Rodavgi Karakousi, Pinelopi A. Tsami, Maria-Areti I. Spanoudaki, Scott J. Dalgarno, Vassileios C. Papadimitriou, Constantinos J. Milios
Summary: In this study, two complexes were synthesized through a solvothermal reaction in methanol, forming two-dimensional and three-dimensional coordination polymers connected by Schiff base ligands. Both complexes exhibit similar strong emission properties in solution and solid state, with complex 2 displaying a slightly longer lifetime.
CHEMISTRY-SWITZERLAND
(2023)
Article
Chemistry, Inorganic & Nuclear
Eleftheria Agapaki, Angelos B. Canaj, Gary S. Nichol, Euan K. Brechin
Summary: Equimolar amounts of MnBr2 center dot 4H(2)O and HL1 react in a basic MeCN solution to produce [Mn-4(II)(L-1)(4)Br-4(H2O)(4)] (1), with a [Mn-4(II)] tetrahedral metallic skeleton and a [Mn-4(II)(mu(3)-O)(4)] cubane cluster core. Replacement of MnBr2 center dot 4H(2)O with Mn(O2CMe)(2)center dot 4H(2)O yields [(Mn2Mn12O2)-Mn-III-O-II(L-1)(4)(OAc)(22)] (2), which can be described as a series of edge-sharing [Mn-4] tetrahedra that form a linear array with a corkscrew-like twist in each [Mn-2] pair. Reaction of the triangle [(Mn3O)-O-III(OAc)(6)(py)(3)](ClO4) instead of a Mn-II salt results in [(Mn14Mn4O14)-Mn-III-O-I(L-1)(4)(HL1)(2)(OAc)(18)(H2O)(2)] (3), featuring three vertex-sharing [Mn-4(III)] butterflies flanked by a [Mn-4(III)] cubane and a [(Mn2Mn2II)-Mn-III] tetrahedron. Magnetic measurements of 1-3 indicate antiferromagnetic exchange interactions, with a diamagnetic ground state for [Mn-4] (1) and Single-Molecule Magnet (SMM) behavior with U-eff = 22 K for [Mn-18] (3).
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Avik Bhanja, Sangeeta Roy Chaudhuri, Angelos B. Canaj, Shachi Pranjal Vyas, Fabrizio Ortu, Lucy Smythe, Mark Murrie, Ritobrata Goswami, Debashis Ray
Summary: Two new paths for coordination driven self-assembly reactions have been discovered using 2-((1-hydroxy-2-methylpropan-2-ylimino)methyl)-6-methoxyphenol (H2L) as a supporting ligand. The reaction procedure revealed the importance of HO- and Cl- ions in the mineral-like growth of the complexes derived from solvents and metal ion salts.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Nsikak B. Essien, Antal Galvacsi, Csilla Kallay, Youssra Al-Hilaly, Ramon Gonzalez-Mendez, Geoffrey R. Akien, Graham J. Tizzard, Simon J. Coles, Maria Besora, George E. Kostakis
Summary: We synthesised and characterised two Zn salan fluorine-based complexes, both racemic and chiral, using commercially available materials. These complexes readily absorb H2O from the atmosphere. In solution (DMSO-H2O), both experimental and theoretical studies reveal that these complexes exist in a dimeric-monomeric equilibrium at the millimolar level. Additionally, we investigated their ability to sense amines via (19)F NMR, finding that the exchange with analytes requires an extreme excess due to the strong coordination of water or DMSO in CDCl3 or d(6)-DMSO.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
George E. Kostakis
Summary: This article introduces a contemporary approach in molecular design and synthesis, called Chemical Chartographisis, which enhances the potential of flexible molecular systems by taking a holistic view of the reaction processes. The article discusses three projects in detail, involving catalytic and biologically related examples.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Pinelopi A. Tsami, Thomais G. Tziotzi, Angelos B. Canaj, Mukesh K. Singh, Scott J. Dalgarno, Euan K. Brechin, Constantinos J. Milios
Summary: The reaction between Co(OAc)(2)·4H(2)O and Hsal in a basic MeCN solution produces a hexadecanucleare wheel compound [Co-16(sal)(16)(OAc)(16)]·16MeCN (1.16MeCN) that exhibits ferromagnetic nearest neighbour exchange and pseudo-ca[ixarene character. Symmetry equivalent wheels self-assemble to form remarkable tubular networks of capsules in the extended structure.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Daniel J. Cutler, Marco Coletta, Mukesh K. Singh, Angelos B. Canaj, Laura J. McCormick, Simon J. Coles, Jurgen Schnack, Euan K. Brechin
Summary: The [Fe-8(III)] hexagonal bipyramid exhibits antiferromagnetic exchange between the two capping tetrahedral ions and the six ring octahedral ions resulting in a spin ground state of S = 10.
DALTON TRANSACTIONS
(2022)
