Article
Biochemistry & Molecular Biology
Mathiyan Muralisankar, Jun-Ru Chen, Jebiti Haribabu, Shyue-Chu Ke
Summary: In this study, a series of water-soluble ruthenium-arene complexes were synthesized and characterized. Biophysical and chemical studies showed that these complexes have good anticancer activity. Cell experiments demonstrated that the complexes have stronger toxicity against bladder cancer cells compared to normal cells. This study provides new insights for the rational design of organoruthenium drugs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Jean Joseph, Pierre Mobian, Alain Chaumont, Jennifer A. Wytko, Jean Weiss
Summary: Biphenol-based ligands can bind titanium(IV) centers and generate sophisticated self-assembled structures. The structure of the ligands affects the nuclearity and stability of the formed complexes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Dinabandhu Patra, Surya Prakash Singh
Summary: The metal doping strategy reduces the defect/trap states and improves the stability of CsPbCl3. Post-synthesis surface passivation with BPY improves the energy transfer properties, relative PLQY, and stability of Mn-doped CsPbCl3 PNCs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Anton A. Ulantikov, Taisiya S. Sukhikh, Evgeniy N. Gribov, Natalia V. Maltseva, Konstantin A. Brylev, Yuri V. Mironov, Yakov M. Gayfulin
Summary: The study reported the selective preparation, structures, and spectroscopic properties of two new rhenium cluster complexes, characterized by differing solubility and redox behavior. The compounds show weak red luminescence and potential for coordination polymer synthesis.
Article
Chemistry, Organic
Yudai Onda, Hiroshi Masai, Jun Terao
Summary: A new synthetic strategy for macrocycles bearing multiple coordination moieties was developed. The double helix structure improved the selectivity of macrocycle synthesis by bringing the reaction points in close proximity, even for large macrocycles.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Brian J. J. Timmer, Oleksandr Kravchenko, Biaobiao Zhang, Tianqi Liu, Licheng Sun
Summary: This study investigates the catalytic activity of Ru(bda)L-2 family of catalysts and finds that the unique bimolecular reactivity is purely dependent on the spatial geometry of the ligand. The electronic effects of the backbone do not significantly impact the catalysis, highlighting the importance of structural features in determining catalytic activity.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Fulvio Perrella, Alessio Petrone, Nadia Rega
Summary: This study investigates the microsolvation of a negatively charged Ru(II) complex in water solution using ab initio molecular dynamics, revealing the solvent effects on the structure.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Aoi Hori, Yuna Kim, Keishiro Tahara, Tomofumi Kadoya, Jun-ichi Yamada, Kazuya Kubo
Summary: Two unsymmetrical metal dithiolene complexes, labeled as 1 and 2, were synthesized and studied. The absorption bands of the HOMO-LUMO transitions for 1 and 2 shift in opposite directions with increasing solvent polarity, resulting in red and blue shifts, respectively.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Kristina Martinez, Kaitlyn Benson, Jared Paul, Russell H. Schmehl
Summary: This study investigates the reaction of luminescent chromophores with anthraquinone in excited states, revealing different reaction pathways and mechanisms for different complexes. While the OHbpy complex can undergo electron transfer and proton transfer among other pathways, the OMebpy complex mainly undergoes electron transfer. The findings highlight the characteristics of reactions between different chromophores and anthraquinone in excited states.
Article
Chemistry, Inorganic & Nuclear
Robin Vinck, Johannes Karges, Mickael Tharaud, Kevin Cariou, Gilles Gasser
Summary: Eight new ruthenium complexes were synthesized by modifying ligands or changing metal coordination, and their effects on physical, spectroscopic, and biological properties were studied. The modifications had moderate effects on visible light absorption and singlet oxygen quantum yield, but significant impacts on lipophilicity, cellular uptake, and phototoxicity. This work identified two promising ruthenium complexes as photosensitizers for photodynamic therapy and provided guidance for designing better photosensitizers.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
W. Wong-Ng, J. Culp, D. W. Siderius, Y. Chen, S. Y. G. Wang, A. J. Allen, E. Cockayne
Summary: Ni-BpyMe(A) is a crystalline framework without guest molecules, exhibiting an orthorhombic structure with unique distribution of methyl groups, demonstrating Type-I sorption characteristics and lack of flexibility typical of MOFs. Comparison with Ni-BpyMe(D) containing DMSO as guest molecules revealed significant structural change upon removal of the guest molecules, resulting in a different structure and monoclinic crystal system.
Article
Chemistry, Inorganic & Nuclear
Norbani Abdullah, Lailatun N. Ozair, Habibah Samsudin, Graham J. Tizzard, Simon J. Coles, Mohammad Mohamadin
Summary: In this study, various mononuclear and dinuclear complexes were synthesized by reacting different ligands with copper ions, exhibiting diverse characteristics in terms of crystal structures and thermotropic mesomorphic properties.
JOURNAL OF COORDINATION CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Lingli Zeng, Dumitru Sirbu, Nikolai V. Tkachenko, Andrew C. Benniston
Summary: The study focused on identifying ruthenium agents capable of photorelease of anthraquinone-based ligands, with the produced complexes showing a subtle difference in chemical shift in high-field H-1 NMR spectra. The excited state lifetime of the complexes varied in water and MeCN, and the decomposition of the complex in presence of hydrogen peroxide showed an autocatalytic reaction mechanism involving radical formation and ruthenium(iii) complex oxidation.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Applied
Jun Ni, Zhongcui Guo, Qiong Zhu, Shuqin Liu, Jianjun Zhang
Summary: This article reports the synthesis and characterization of three novel square-planar platinum(II) complexes. These complexes exhibit sensitive response to volatile organic compound (VOC) vapors and show potential application prospects in visual detection.
Article
Spectroscopy
Jose Geraldo M. Castro Junior, Willian R. Rocha
Summary: In this article, Density Functional Theory based calculations were used to investigate the photophysics of the [Ru(bpy)(2)(HAT)](2+) complex in water, as well as the thermodynamics of its reactions with oxygen, nitric oxide, and GMP nucleotide. The results showed that the excited state reactions and electron transfers are highly favorable, indicating that the complex can be involved in the photooxidation of DNA and act as a photosensitizer in photodynamic therapy. The study also suggests the potential use of the complex for the generation of singlet nitroxyl and its impact on physiological studies involving HNO.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Physical
L. Anders Hammarback, Amy L. Bishop, Christina Jordan, Gayathri Athavan, Jonathan B. Eastwood, Thomas J. Burden, Joshua T. W. Bray, Francis Clarke, Alan Robinson, Jean-Philippe Krieger, Adrian Whitwood, Ian P. Clark, Michael Towrie, Jason M. Lynam, Ian J. S. Fairlamb
Summary: This study investigates the influence of the ortho-fluorine effect on the kinetic and thermodynamic control of C-H bond activation in manganese(I)-mediated reactions. The results show that a kinetically controlled irreversible sigma-complex-assisted metathesis mechanism is operative in these reactions. Additionally, the generation of the regioisomeric cyclomanganated intermediates plays a critical role in governing C-H bond site selectivity under catalytic conditions.
Article
Biochemistry & Molecular Biology
Jinnette Tolentino Collado, James N. Iuliano, Katalin Pirisi, Samruddhi Jewlikar, Katrin Adamczyk, Gregory M. Greetham, Michael Towrie, Jeremy R. H. Tame, Stephen R. Meech, Peter J. Tonge, Andras Lukacs
Summary: This study investigates the photoactivation mechanism of OaPAC and reveals the direct connection between BLUF photoactivation and the structural and functional implications on the partner protein. The results demonstrate the formation of an intermediate species on the photoactivation pathway and highlight the essential role of proton transfer in initiating structural reorganization and AC activity.
ACS CHEMICAL BIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Thomas J. Burden, Kathryn P. R. Fernandez, Mary Kagoro, Jonathan B. Eastwood, Theo F. N. Tanner, Adrian C. Whitwood, Ian P. Clark, Michael Towrie, Jean-Philippe Krieger, Jason M. Lynam, Ian J. S. Fairlamb
Summary: Mn(I) C-H functionalization of coumarins allows for rapid assembly of polycyclic pyridinium-containing coumarins, utilizing stable organomanganese reagents in both photochemical and thermal reactions. Cyclomanganated intermediates facilitate the characterization of active Mn(I) carbonyl-containing species and provide insight into the reductive elimination pathway. The obtained products can be further decomplexed to form pi-extended hybrid coumarin-pyridinium compounds.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Katerina Peterkova, Mark Stitch, Rayhaan Z. Boota, Paul A. Scattergood, Paul I. P. Elliott, Michael Towrie, Peter Podbevsek, Janez Plavec, Susan J. Quinn
Summary: G-quadruplexes are important targets in cancer research and understanding their binding with diagnostic probes is crucial for the development of molecular tools. This study investigates the binding of an enantiopure NIR emitting [Os(TAP)(2)(dppz)](2+) complex to G-quadruplex structures formed by human telomere and cMYC sequences in solution using NMR and time-resolved infrared spectroscopy. The results show that the emission response of the complex is sensitive to subtle changes in the binding environment, indicating potential applications in cancer diagnostics.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Xuejian Zhang, Burin Sudittapong, Michael D. D. Ward
Summary: This article describes a Co-12 coordination cage with a cuboctahedral architecture that exhibits strong guest binding of large aromatic fluorophores. The cage also catalyzes reactions of the bound guests and demonstrates a new type of cage-based catalysis that relies on Co(ii)/Co(iii) redox activity. These findings highlight the active role of the cage in catalytic processes, going beyond its passive function as a reaction vessel.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Applied
Chukwunonso P. Okoli, Harshadrai M. Rawel, Andreas Taubert, Timothy L. Easun, Emmanuel I. Unuabonah, Damilare Olorunnisola, Chidinma G. Olorunnisola, Oluwaferanmi B. Otitoju
Summary: Cellulose has unique structural and physicochemical properties, making it an attractive material for adsorption of pharmaceutical residues in water. This review summarizes and compares different types of cellulose-based adsorbents and their applications, as well as the efficiency of cellulose-based adsorbents compared to other types of adsorbents. It aims to shift the focus to the application of cellulose-based adsorbents in the effective pre-concentration and quantification of pharmaceutical pollutants from water, and discusses the challenges and future perspectives in this field.
CARBOHYDRATE POLYMERS
(2023)
Article
Nanoscience & Nanotechnology
Callum Pritchard, Melissa Ligorio, Garrett D. Jackson, Matthew I. Gibson, Michael D. Ward
Summary: The presentation of glycans in multiple forms enhances their binding capacity to lectins. Current materials used as scaffolds for multivalent glycan arrays have limited reproducibility and predictability due to their intrinsic dispersity. In this study, self-assembled metal coordination cages with predictable ligand arrays were used to assemble a monodisperse library of glycoclusters displaying a range of valencies. The synthetic route was tolerant of biologically relevant glycans, and the glycocluster series demonstrated increased binding to lectins with increasing glycans. This strategy offers an alternative for controlling the valency of 3-D glycan arrays and has potential applications in sensing, imaging, and basic biology.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Ahmed M. M. Alazaly, Guy J. Clarkson, Michael D. Ward, Ayman A. Abdel-Shafi
Summary: In this study, the synthesis and characterization of heteroleptic Cr(III) complexes were reported, and their spectral and fluorescence properties in different solutions were studied. The fluorescence quantum yields, excited state energy, and interaction with oxygen showed variations among these complexes.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jack C. Dorrat, Rosemary J. Young, Christopher G. P. Taylor, Max B. Tipping, Andrew J. Blok, David R. Turner, Alasdair I. McKay, Simon Ovenden, Michael D. Ward, Genevieve H. Dennison, Kellie L. Tuck
Summary: This study investigates the host-guest chemistry between octanuclear cubic coordination cage hosts and O,O'-diisopropyl fluorophosphate (DFP), a simulant of phosphonofluoridate G-series chemical warfare agent. The results show that two coordination cages, H-PEG and H-W, can increase the lifetime of DFP in aqueous buffer solution by protecting it from hydrolysis. Crystallographic analysis reveals that DFP binds to the windows of the cage surface, with the phosphorus-fluorine bond directed into the internal cavity, enhancing the stability of DFP. Initial studies with the chemical warfare agent sarin (GB) also indicate a reduced rate of hydrolysis when bound in the H-PEG cage. These cages' ability to inhibit hydrolysis of P-F bond containing organophosphorus guests through encapsulation may have applications in forensic sample preservation and analysis.
DALTON TRANSACTIONS
(2023)
Article
Biochemical Research Methods
P. Roszkowska, A. Dickenson, J. E. Higham, T. L. Easun, J. L. Walsh, A. G. Slater
Summary: Non-thermal plasma (NTP) is a promising state of matter for chemical reactions, providing high densities of reactive species without the need for a catalyst at atmospheric pressure and moderate temperature. However, a better understanding of the complex interactions between NTP and liquids is needed for comprehensive use of NTP in reactions. This study details the construction of a microfluidic reactor and a corresponding batch setup for NTP chemical reactions in organic solvents, enabling controlled generation of NTP and inline data collection. The developed frameworks contribute to the potential applications of NTP in chemical synthesis.
Article
Chemistry, Inorganic & Nuclear
Atena B. B. Solea, Michael D. D. Ward
Summary: Luminol bound in a coordination cage undergoes oxidation by H2O2, resulting in chemiluminescence. The excited state energy from the chemiluminescence can be transferred to surface-bound fluorescein molecules through resonance energy transfer.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Daniel L. Stares, Cristina Mozaceanu, Michael D. Ward, Christoph A. Schalley
Summary: We show that ESI-MS can be used to determine the different modes of guest binding with a Co8L12 cubic cage. High stoichiometry guest binding was observed, with the guests predominantly binding externally, but internal guest inclusion was also observed at higher guest loading.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Cristina Mozaceanu, Atena B. Solea, Christopher G. P. Taylor, Burin Sudittapong, Michael D. Ward
Summary: The binding of three isomeric guests inside an octanuclear cubic coordination cage host has been studied in different solvents. The binding free energy was found to be correlated with the polarity of the guests, with increased binding observed for more polar guests. The binding in water was further enhanced by a hydrophobic contribution, while the improvement in guest binding was found to be entropy-driven. These findings suggest that solvent effects play a crucial role in guest binding.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Analytical
Samantha H. Rutherford, Gregory M. Greetham, Michael Towrie, Anthony W. Parker, Soheila Kharratian, Thomas F. Krauss, Alison Nordon, Matthew J. Baker, Neil T. Hunt
Summary: Binding of drugs to blood serum proteins can affect therapeutic efficacy and toxicity. Two-dimensional infrared spectroscopy allows for rapid measurement of drug-protein binding concentrations without additional sample processing. By measuring changes in the protein amide I band, low drug concentrations can be detected and levels consistent with patient overdose can be identified.
Article
Chemistry, Inorganic & Nuclear
Atena B. Solea, Burin Sudittapong, Christopher G. P. Taylor, Michael D. Ward
Summary: In this study, we compared and contrasted the hydrolysis reactions of two different aromatic esters using an octanuclear cubic Co-8 coordination cage as the catalyst. The results showed that exterior-surface catalysis can be effective and potentially general, while cavity-binding of guests can result in negative catalysis.
DALTON TRANSACTIONS
(2022)
