Article
Chemistry, Multidisciplinary
Isaac Choi, Antonis M. Messinis, Xiaoyan Hou, Lutz Ackermann
Summary: The research reveals osmaelectrocatalyzed C-H activations using benzoic acids, enabling electrooxidative alkyne annulations with high levels of selectivity. Unprecedented osmium(0) and osmium(II) intermediates were isolated, and detailed mechanistic studies unveiled a facile C-H cleavage and ample substrate scope for annulated heterocycles synthesis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Editorial Material
Chemistry, Multidisciplinary
Joakim B. Jakobsen, Magnus H. Ronne, Kim Daasbjerg, Troels Skrydstrup
Summary: The reduction of carbon dioxide is crucial for producing non-fossil-fuel-based feedstocks and mitigating greenhouse gas emissions. Amines play a critical role in these transformations, acting as CO2 trapping agents, proton shuttles, electron donors, and facilitators of CO2 reductions through formamide derivatives.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Analytical
Qidong Yu, Wenmin Zhang, Hui Chen, Jingyi Wang, Zhiyong Wang, Qingqing Ding, Lan Zhang
Summary: This research offers a facile and general strategy to enhance the durability of COF coatings and their affinity to polar AAs. The detection method based on the obtained fibers demonstrates high sensitivity, satisfactory reproducibility, and good precision.
ANALYTICA CHIMICA ACTA
(2023)
Article
Multidisciplinary Sciences
P. Krishnaveni, V Ganesh
Summary: Modern hospital treatments focus on developing electrochemical biosensors for early disease diagnosis using unconventional human bio-fluids such as sweat and saliva to avoid the use of blood and urine samples. Research has shown that in artificially simulated bio-mimics of sweat and saliva, the electron transfer reaction of the redox couple is diffusion-controlled, but the rate constant values decrease in the presence of a liquid crystalline phase.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Ceramics
Ying Wang, Ling Xu Yang, Rui Jia Liu, Huan Peng Bu, Yong Biao Mu, Hui Jun Liu, Chao Liu Zeng, Sheng Long Zhu, Chao Fu
Summary: High-purity and fine CrB powders were synthesized in (Na, K)Cl molten salt at 850 degrees C for 2 h, and then used as precursors to synthesize homogeneous and size-controlled Cr2AlB2 powders at 900 degrees C for 2 h. The formation mechanisms involve in-situ reaction of Cr atom with B powders for CrB, and mutual migration of Al and CrB followed by Al intercalation for Cr2AlB2.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Ahmed El Ghazaly, Heba Ahmed, Amgad R. Rezk, Joseph Halim, Per O. A. Persson, Leslie Y. Yeo, Johanna Rosen
Summary: This study presents a one-step synthesis method for the conversion from Ti3AlC2 MAX to Ti3C2Tz MXene on the order of milliseconds, facilitated by the combination of protons and fluorine ions to selectively etch the MAX phase. The results demonstrate that flexible electrodes fabricated using this method exhibit comparable electrochemical performance to previously reported ones.
Article
Chemistry, Multidisciplinary
Martin Frandsen, Kassem El-Chami, Johan Palmfeldt, Jakob Melgaard Smidt, Maja E. T. Langballe, Alexander Sandahl, Kurt V. Gothelf
Summary: A method for automated solid-phase synthesis of oligo(disulfide)s was developed using thiol removal and thiosulfonate treatment. The oligomers were synthesized as extensions of oligonucleotides on an automated synthesizer, and their sequences were confirmed by MS/MS analysis. The study also demonstrated the release of a coumarin cargo under reducing conditions, suggesting potential applications for drug delivery systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Pei Peng, Lei Luo, Yong Wang
Summary: This study investigated the redox characteristics and electronic transition properties of compounds 1 and 2 using techniques such as IR spectroscopy, electronic absorption spectroscopy, elemental analysis, and single-crystal X-ray diffraction analysis.
JOURNAL OF COORDINATION CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Tugce Beyazay, William F. Martin, Harun Tuysuz
Summary: This study reports a method to convert CO2 and H2O into organic molecules formate and formamide using Ni-Fe nitride heterostructures under mild hydrothermal conditions, providing important clues for understanding premetabolic processes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Hamed Vahabi, Sravanthi Vallabhuneni, Mohammadhasan Hedayati, Wei Wang, Diego Krapf, Matt J. Kipper, Nenad Miljkovic, Arun K. Kota
Summary: This study presents a systematic design of non-textured, all-solid, hydrophilic slippery surfaces by covalently grafting polyethylene glycol brushes to smooth substrates. The SLIC surfaces demonstrate outstanding performance in condensation and fouling resistance compared to non-slippery hydrophilic surfaces and slippery hydrophobic surfaces.
Article
Chemistry, Multidisciplinary
Aleksandra Kosinska, Monika K. Nisiewicz, Anna M. Nowicka, Artur Kasprzak
Summary: Two ferrocenylated organized molecules were used as receptor layers for the electrochemical recognition of polycyclic aromatic hydrocarbons. The construction of innovative sensors with Fc-1 and Fc-2 enabled efficient recognition of analytes. Comparisons between the working parameters of electrochemical sensors comprising Fc-1 or Fc-2 were also included.
Article
Chemistry, Multidisciplinary
Valtteri Oksanen, Sari Rautiainen, Tom Wirtanen
Summary: This study presents a nickel-bipyridine electrocatalyzed homocoupling method for synthesizing bifuran motifs, using bromine-substituted methyl furancarboxylates prepared from hemicellulose-derived furfural. The protocol utilizes sustainable carbon-based graphite electrodes in a simple setup and avoids the use of a sacrificial anode by employing triethanolamine as an electron donor. The nickel-electrocatalyzed homocoupling is applied to the preparation of bifuran-based monomers, which are isolated using precipitation.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Biophysics
Yaran Chang, Yongjia Chen, Yunlong Shao, Boye Li, Yuanyuan Wu, Wenmei Zhang, Yingyan Zhou, Zhihui Yu, Liping Lu, Xiayan Wang, Guangsheng Guo
Summary: This study successfully employed solid-phase microextraction (SPME) technique and nanobiosensors to monitor and quantify dopamine concentration fluctuations in the cytoplasm of a single living cell, providing a new method for researching dopamine neurotoxicity and drug action mechanisms for neurodegenerative disease.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Dominik Scherrer, David Vogel, Ute Drechsler, Antonis Olziersky, Christof Sparr, Marcel Mayor, Emanuel Loertscher
Summary: The study used Au nanohole arrays as SERS substrates to monitor solid-phase deprotection and click reactions. The results showed that the SERS substrate exhibited reliability in terms of signal reproducibility and chemical stability, and could be used to identify solid-phase intermediate and products.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Yasmeen Bakhatan, Israel Alshanski, Chieh-Kai Chan, Wei-Chih Lo, Po-Wei Lu, Pin-Hsuan Liao, Cheng-Chung Wang, Mattan Hurevich
Summary: Solid-phase synthesis is the main method for preparing biological oligomers. Accelerated solid-phase synthesis is crucial for chemical biology but is not easy for oligosaccharide synthesis. High shear stirring is a new approach to accelerate solid-phase synthesis by improving mixing efficiency. In this study, we used high shear mixing to perform diffusion-dependent glycosylation and completed full glycosylation cycles in minutes.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Sara Perez-Rodriguez, Samuel D. S. Fitch, Philip N. Bartlett, Nuria Garcia-Araez
Summary: Through cycling experiments of lithium battery materials in different brine environments, this study found that diluting high-viscosity brine with water can significantly enhance the capacity and rate capability of the battery. In addition, electrochemical and X-ray diffraction analysis showed that high lithium selectivity was maintained during cycling, while Raman spectra and scanning electron microscopy images revealed that capacity degradation may be caused by particle cracking due to interfacial reactions.
Article
Biochemistry & Molecular Biology
Lorenzo Casimiro, Leonardo Andreoni, Jessica Groppi, Alberto Credi, Remi Metivier, Serena Silvi
Summary: Chemical actinometers are essential tools in photochemistry for measuring photon flux and conducting quantitative analysis of photoreactions. We propose the use of 4,4'-dimethylazobenzene as a chemical actinometer, which undergoes efficient E/Z isomerization upon irradiation at 365 nm. This compound allows for easy determination of photon flux in the UV-visible region and can be reused after reset.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Y. J. Noori, S. Thomas, S. Ramadan, V. K. Greenacre, N. M. Abdelazim, Y. Han, J. Zhang, R. Beanland, A. L. Hector, N. Klein, G. Reid, P. N. Bartlett, C. H. de Groot
Summary: This paper presents a method for preparing two-dimensional heterostructures on graphene electrodes using electrodeposition technique. By selectively depositing transition metal dichalcogenides on micro-electrodes, uniform layers of WS2 can be grown controllably. This technique paves the way for large-scale production of two-dimensional material heterostructures.
Article
Spectroscopy
Maria Sole Zalaffi, Paolo Ugo, Almudena Marti, Bethany M. Bowden, Andrea E. Russell, Philip N. Bartlett
Summary: Particle in cavity nanostructures were produced by sedimentation of silver nanostars onto sphere segment void (SSV) cavity structures. These nanostructures showed higher enhancement factors in SERS and were found to be promising substrates for highly sensitive detection of dyes and cochineal lake pigment.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Electrochemistry
A. G. Wallace, R. P. King, N. Zhelev, A. H. Jaafar, W. Levason, R. Huang, G. Reid, P. N. Bartlett
Summary: In this paper, the use of Na-3[SbS4].9H(2)O as a single source precursor for the electrodeposition of Sb2S3 is reported. The study shows that high-quality crystalline films of Sb2S3 can be obtained by suitable pulse plating approach, and these films exhibit promising potential for application in Resistive Random-Access Memory.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Alexander W. Black, Wenjian Zhang, Gillian Reid, Philip N. Bartlett
Summary: This study investigated diffusion in weakly coordinating solvents using electrochemical measurements. The diffusion coefficients were measured and compared with theoretical upper and lower bounds. The results showed that the charged metallocene species had larger particle size than expected, highlighting the importance of considering modifications to the Stokes-Einstein equation.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Tatjana Safarik, Aleksandar Karajic, Stephane Reculusa, Philip N. Bartlett, Nicolas Mano, Alexander Kuhn
Summary: This study reports the electrochemical elaboration and characterization of a 3D coaxial macroporous twin-electrode, which is obtained by a low-cost bottom-up approach using nanoengineered highly organized porous material. The resulting electrode architecture allows for signal amplification in electroanalytical measurements and has potential applications in various (bio)electroanalytical fields.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Ayoub H. Jaafar, Lingcong Meng, Tongjun Zhang, Dongkai Guo, Daniel Newbrook, Wenjian Zhang, Gillian Reid, C. H. de Groot, Philip N. Bartlett, Ruomeng Huang
Summary: We report the development of flexible memristor devices based on hybrid organic-inorganic materials using a fast and simple electrochemical fabrication method. These devices exhibit reliable and reproducible bipolar resistive switching at low voltages without the need for an electroforming process. Multistate switching behavior can also be achieved by controlling the compliance current.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Organic
Damian E. Yerien, Jessica Groppi, Al Postigo, Alberto Credi, Romina S. Conde, Massimo Baroncini, Sebastian Barata-Vallejo
Summary: Modified crown ethers are essential in supramolecular chemistry, and have applications in various fields such as phase transfer catalysis, metal extraction, smart materials, and molecular machines. In this study, a one-pot highly selective photocatalytic fluoroalkylation protocol was developed for the mono-functionalization of benzo substituted crown ethers. With broad applicability and high yield, this method allows for the late-stage functionalization of various aromatic crown ethers, including those involved in mechanically interlocked molecules.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Electrochemistry
D. A. Cook, S. J. Reeves, W. Zhang, G. Reid, W. Levason, P. N. Bartlett, J. M. Dyke, V. K. Greenacre
Summary: Electrodeposition of elemental Te from [NnBu4]2[TeCl6] in dichloromethane was studied. It was found that reduction of the Te(IV) complex to deposit Te requires a large overpotential, which is significantly reduced once Te is deposited on the electrode. This overpotential arises due to the instability of the intermediate Te(III) species. Density functional theory calculations confirmed the instability of possible Te(III) complexes, and a catalytic mechanism involving Lewis acid/base adduct formation at the electrode surface was proposed to overcome this thermodynamic barrier.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Leonardo Andreoni, Federica Cester Bonati, Jessica Groppi, Davide Balestri, Gianpiero Cera, Alberto Credi, Andrea Secchi, Serena Silvi
Summary: We synthesized and characterized [2]rotaxanes based on a stilbazolium dye and a calix[6]arene macrocycle. Due to the non-symmetry of both components, two orientational isomers were obtained. The two isomers exhibited distinct photophysical and photochemical properties in solution and solid state, surpassing the unencapsulated dye.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Tauqir Nasir, Li Shao, Yisong Han, Richard Beanland, Philip N. Bartlett, Andrew L. Hector
Summary: This study successfully prepared Au nanostructures through electrodeposition using mesoporous silica films as hard templates. By optimizing the conditions, pores with sizes below 10 nm were controlled, and the growth of nanostructures was initiated at the electrode surface. The hard templates and Au electrodeposits were characterized using various methods. Finally, the silica templates were removed and stable Au nanoparticles on different electrode surfaces were achieved.
NANOSCALE ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Alex Boschi, Simone Cinili, Eva Bystrenova, Giampiero Ruani, Jessica Groppi, Alberto Credi, Massimo Baroncini, Andrea Candini, Denis Gentili, Massimiliano Cavallini
Summary: In this study, we utilized the photoisomerization of azobenzene compound triggered by UV light and thermal treatment to fabricate multimodal readable and rewritable data matrix-based devices. The UV light sensing capabilities were monitored through changes in optical, spectroscopic, and electrical properties. By integrating tetra(azobenzene)methane crystals in micrometric tags, the information could be modified and repristinated through local UV treatment and thermal annealing.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Gilles E. Moehl, Tauqir Nasir, Yisong Han, Yasir J. Noori, Ruomeng Huang, Richard Beanland, Philip N. Bartlett, Andrew L. Hector
Summary: Silica thin films with vertical nanopores are used to control access to electrode surfaces and as templates for nanomaterial growth. The electrochemically assisted surfactant assembly method, which is the most effective way to produce these films, also results in aggregates of silica particles. This study demonstrates that applying an AC signal to the potential during growth prevents the formation of aggregates, resulting in only a few single particles. This finding is attributed to better control of the diffusion field of hydroxide ions responsible for particle growth. The resulting films are smooth and have highly ordered hexagonal pore structures.
Article
Chemistry, Physical
Alexander W. Black, Philip N. Bartlett
Summary: This study discusses the use of solvent descriptors to define weakly coordinating solvents and identify new candidates for electrochemical applications. Through comparison with dichloromethane, o-dichlorobenzene and 1,2-dichloroethane are identified as the most promising solvents for electrodeposition due to their polarity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
