Article
Chemistry, Multidisciplinary
Jiawen Wu, Yaru Li, Yong Zhang, Yan Li, Yulan Huang, Zhengyan Jiang, Qian Ai, Yanliang Liu, Luozheng Zhang, Yuanjun Peng, Xingzhu Wang, Baomin Xu, Chun Cheng
Summary: Employing low-dimensional perovskite, such as 1D iodide lead thiophenamidine, can enhance the efficiency and stability of perovskite solar cells by effectively passivating the defect of perovskite and promoting charge transfer. The use of thiopheniformamidine hydrochloride in printable mesoscopic perovskite solar cells has resulted in significantly improved power conversion efficiency and outstanding operational stability.
Article
Chemistry, Physical
Zhangjie Li, Maolin Liu, Shufei Ma, Zhixin Jia, Demin Jia
Summary: In this study, carbon nanotubes (CNTs) were used as carbon source and combined with Ti3C2 MXene sheets under liquid-phase conditions to fabricate CNTs@Ti3C2 skeleton. Then, ruthenium (Ru) chloride and cobalt (Co) nitrate were introduced as metal source and carbonized the mixture at high temperature to obtain carbon/MXene composites loaded with cobalt-ruthenium metal nanoparticles (CoRu/CNTs@Ti3C2). The obtained composite exhibited excellent hydrogen evolution reaction (HER) performance, with low HER overpotential and stable electrochemical activity.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yingzhen Zhang, Chunwen Sun
Summary: The addition of Li3InCl6 in nonaqueous electrolytes can form a ternary composite solid electrolyte interphase (SEI) that effectively suppresses lithium dendrite growth in lithium metal batteries, maintaining stable long-term cycling performance. This approach leads to dendrite-free metal anodes, as demonstrated in symmetric Li|Li batteries and full batteries with a LiFePO4 cathode, achieving a stable capacity retention of 95% after 500 cycles. Furthermore, the Li vertical bar S battery with Li3InCl6-added LiTFSI in 1,3-dioxolane/1,2-dimethoxyethane electrolyte shows significant improvement in capacity retention at 0.5 C.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Gaoliang Yang, Yuanjian Li, Chang Zhang, Jianbiao Wang, Yang Bai, Carina Yi Jing Lim, Man-Fai Ng, Zhi Chang, Sonal Kumar, Zdenek Sofer, Wei Liu, Zhi Wei Seh
Summary: For the first time, this study introduces a facile approach to build magnesiophilic In/MgIn sites on a Mg metal surface using InCl3 electrolyte additive for rechargeable Mg batteries. These magnesiophilic sites regulate Mg deposition behaviors, achieving stable performance and long cycling lifespan.
Article
Chemistry, Analytical
Sang Jung Lee, Don Hui Lee, Won-Yong Lee
Summary: A highly sensitive ECL sensor based on a graphene-titania-Nafion composite film has been prepared using a simple one-step method. The sensor shows high sensitivity for tripropylamine and nicotinamide adenine dinucleotide hydrogen (NADH) due to the synergistic effect of graphene and titania-Nafion composite. This sensor has potential benefits in the development of dehydrogenase-based biosensors.
Article
Materials Science, Multidisciplinary
Mu Yang, Qilin Dai, Aiwei Tang, Feng Teng, Hong-shang Peng
Summary: To improve the luminescence efficiency and stability of chloride-bromine mixed perovskite quantum dots (PQDs), a novel type of CH3NH3Pb(Cl/Br)3 PQDs (Cl/Br-PQDs) were synthesized using anion exchange and in-situ growth of silica shell. The Cl/Br-PQDs showed a strong emission at 464nm, a high photoluminescence quantum yield of 94.6%, and ultrahigh stability, which were attributed to efficient defects passivation by doped Cl- ions and silica-shell-locked OAm+ ligands, as well as the restricted migration of halogen ions.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Multidisciplinary Sciences
Richard J. Lewis, Kenji Ueura, Xi Liu, Yukimasa Fukuta, Thomas E. Davies, David J. Morgan, Liwei Chen, Jizhen Qi, James Singleton, Jennifer K. Edwards, Simon J. Freakley, Christopher J. Kiely, Yasushi Yamamoto, Graham J. Hutchings
Summary: By using supported gold-palladium alloyed nanoparticles and a titanium silicate-1 catalyst, H2O2 can be generated in situ as needed, achieving high selectivity in the production of cyclohexanone oxime. This approach eliminates the need for transporting and storing highly concentrated, stabilized H2O2, leading to potential environmental and economic savings, as well as process intensification.
Article
Nanoscience & Nanotechnology
Syed Akhil, Manoj Palabathuni, Subarna Biswas, Rahul Singh, Nimai Mishra
Summary: In this study, a simple amine-free synthesis method was developed to prepare stable CsPbBr3 nanocrystals with excellent photoluminescence properties. These nanocrystals exhibited long-term stability at room temperature and in different environmental conditions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yue Yin, Siyu Zhang, Long Zhou, Jing Ma, Xing Guo, Shaoxi Wang, Zhenhua Lin, Jingjing Chang
Summary: The rapid development of organic-inorganic hybrid perovskite solar cells is attributed to their high light absorption coefficient, tunable band gap, and low fabrication cost, with thin film formation and properties playing a crucial role in device performance. This study focused on controlled PbI2 formation during thin film evolution, exploring its effects on film properties and passivation for enhancing photovoltaic device performance. By further passivating with 2D perovskite, the devices achieved a higher PCE of 21.1% and excellent Voc of 1.14 V.
ORGANIC ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Cai Hong Zhang, Tong Jin, Jiandong Liu, Jianmin Ma, Nian Wu Li, Le Yu
Summary: This study proposes a novel in situ formed artificial gradient composite solid electrolyte interphase (GCSEI) layer for highly stable lithium metal anodes. The GCSEI layer, composed of inner rigid inorganics and outer flexible polymers, enables uniform Li plating and accommodates volume change. The research demonstrates fast Li+ ion transport and diffusion kinetics, and exhibits excellent cycling stability.
Article
Chemistry, Physical
Zijin Yang, Xianying Qin, Kui Lin, Qiuchan Cai, Cuiping Han, Feiyu Kang, Baohua Li
Summary: A template-free heterogeneous carbonization strategy was reported for fabricating SnO2/carbon/void/carbon nanofibers compound membrane, which acts as a buffer layer for volume changes of SnO2. Reduced graphene oxide was introduced to construct a free-standing electrode with a conductive network for improved electrochemical performances in lithium/sodium-ion batteries. The SCVC-rGO anodes showed higher reversible capacity, longer lifespan, and superior rate capability in both battery systems.
Article
Chemistry, Multidisciplinary
Yitao He, Yaohui Zhang, Zhihong Wang, Xifei Li, Zhe Lu, Xiqiang Huang, Zhiguo Liu
Summary: This study presents a solid-state anodic oxidation strategy for preparing an in situ protective film to enhance the cycle life of lithium metal anode. The in situ fluorinated protective film efficiently suppresses dendrite growth in lithium metal batteries and improves their cycling performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Applied
Douglas P. Oliveira, Thais R. Cruz, Daniele M. Martins, Pedro Ivo S. Maia, Antonio E. H. Machado, Andre L. Bogado, Beatriz E. Goi, Benedito S. Lima-Neto, Valdemiro P. Carvalho-Jr
Summary: Arene-ruthenium complexes were synthesized and used as pre-catalysts in ROMP of norbornene. Results showed that yields increased with increasing cyclo-alkyl ring size. Through various experimental and characterization methods, optimal reaction conditions were determined and the behavior of the pre-catalysts was well understood.
Article
Chemistry, Physical
Kuan-Ting Chen, Yi-Chun Yang, Lian-Ming Lyu, Ming-Yen Lu, Hsing-Yu Tuan
Summary: This study presents an electrode architecture made of submicron-sized nanocrystalline aggregates obtained from ball-milled BiSb crystals during the potassiation/depotassiation process for high performance and stability in potassium ion batteries. Through various analyses, it demonstrates the reaction mechanism of the nanocrystalline aggregates during composition evolution and cycling process.
Article
Chemistry, Physical
Bowen Deng, Hui Song, Qi Wang, Jianan Hong, Shuang Song, Yanwei Zhang, Kang Peng, Hongwei Zhang, Tetsuya Kako, Jinhua Ye
Summary: A Ru/In2O3 catalyst is reported for efficient and stable photothermal CH3OH production from CO2 hydrogenation under atmospheric pressure. The catalyst demonstrates a remarkable solar CH3OH production, which is more than 50 times higher than that of pure In2O3 and surpasses other reported In2O3-based photothermal catalysts. Detailed characterizations show that the interaction between Ru and In2O3 enhances the activation of CO2 and H-2, and Ru modulates the electronic structure of In2O3, promoting the generation of oxygen vacancies for CH3OH formation. This work provides a rational design approach for efficient catalysts in solar CH3OH production from CO2 hydrogenation under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Narelle Brack, Michelle J. S. Spencer, Benjamin Mapleback, Andy I. R. Herries, Peter Kappen, Andrew N. Rider
Summary: Graphitic nanoplatelets (GNPs) were treated using an ultrasonicated ozonolysis procedure to produce stable aqueous dispersions for thin film deposition using electrophoretic deposition. Zero valence (ZV) iron nanocubes were then coated onto the thin GNP films using pulsed electrodeposition. The changing magnetic character of the ferromagnetic-graphitic hybrid material was related to the nucleation density and growth of the ZV-iron nanocubes. ZV-iron was adsorbed preferentially at the oxygen sites of the GNPs, displacing oxygen groups in some configurations. Transmission electron microscopy studies confirmed that ZV-iron growth nucleated at the edges of the graphite nanoplatelets, and the magnetism of the hybrid material was affected by the convergent crystalline grain boundaries formed between adjacent ZV-iron nanocubes.
Article
Chemistry, Multidisciplinary
Emily Kerr, David J. Hayne, Lachlan C. Soulsby, Joseph C. Bawden, Steven J. Blom, Egan H. Doeven, Luke C. Henderson, Conor F. Hogan, Paul S. Francis
Summary: A novel 'redox mediator' pathway utilizing fac-[Ir(sppy)(3)](3-) has been discovered to significantly enhance the ECL reaction of [Ru(bpy)(3)](2+) and tri-n-propylamine. The green emission of [Ir(sppy)(3)](3-)* allows for internal standardization of the reaction, enabling superior sensitivity and precision for low-cost, portable ECL-based analytical devices when using a digital camera as the photodetector.
Article
Engineering, Biomedical
Soheila Sabouri, Mengjie Liu, Shouxiang Zhang, Bicheng Yao, Hamid Soleimaninejad, Amy A. Baxter, Georgina Armendariz-Vidales, Pramod Subedi, Chong Duan, Xiaoding Lou, Conor F. Hogan, Begona Heras, Ivan K. H. Poon, Yuning Hong
Summary: The impairment of protein quality control network leads to unfolded and aggregated proteins accumulation. A new platform based on an AIEgen is reported for labeling and tracking unfolded proteins in cells. The rational design demonstrates the potential of diverse functional groups for maximal sensitivity and selectivity in biological samples.
ADVANCED HEALTHCARE MATERIALS
(2021)
Article
Chemistry, Analytical
Wil Gardner, David A. Winkler, Suzanne M. Cutts, Steven A. Torney, Geoffrey A. Pietersz, Benjamin W. Muir, Paul J. Pigram
Summary: Feature extraction algorithms are important for reducing data dimensionality, but most methods do not consider spatial information. This study introduces a convolutional autoencoder (CNNAE) specifically designed for hyperspectral ToF-SIMS imaging data, which incorporates pixel neighborhood information through convolutional layers. Compared to other methods, the CNNAE produces features with higher contrast and autocorrelation, accurately representing histologically recognizable features in the data. Additionally, the extension of CNNAE to 3D ToF-SIMS images provides a proof of principle for analyzing more complex 3D datasets.
ANALYTICAL CHEMISTRY
(2022)
Review
Biophysics
Wil Gardner, David A. Winkler, Benjamin W. Muir, Paul J. Pigram
Summary: Time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging is a powerful label-free method for exploring organic, bioorganic, and biological systems. However, the complexity of the data produced by ToF-SIMS experiments makes interpretation and analysis challenging. Research has focused on applying multivariate analysis and machine learning techniques to find meaningful patterns and relationships in these datasets.
Article
Biochemistry & Molecular Biology
Laena D'Alton, Serena Carrara, Gregory J. Barbante, David Hoxley, David J. Hayne, Paul S. Francis, Conor F. Hogan
Summary: This article describes a powerful, low-cost, and semi-portable electrochemiluminescence (ECL) biosensing device based on a Raspberry Pi single-board computer. The Pi serves as the controller and user interface, interfacing with an expansion board that controls the potential applied to a disposable screen-printed electrode and facilitates data acquisition from a photomultiplier tube (PMT). The Raspberry Pi-based setup demonstrates comparable analytical performance to a traditional ECL configuration and has the potential to replace conventional ECL setups at a fraction of the cost, without sacrificing sensitivity or versatility. This combination of a single-board computer and a sensitive light detector represents an important step towards mobile, point-of-care diagnostic platforms for ECL instruments.
BIOELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Wil Gardner, David A. Winkler, Ruqaya Maliki, Suzanne M. Cutts, Sarah Ellis, Robin L. Anderson, Benjamin W. Muir, Paul J. Pigram
Summary: This study applies a convolutional neural network (CNN) fusion method to fuse ToF-SIMS hyperspectral data sets, achieving resolution-enhanced data with high spatial and mass resolution. The method is applied to ToF-SIMS images of a gold mesh sample and a tumor tissue section, and the improvement is compared to another linear fusion method used in the broader MSI community.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Analytical
Sarah E. Bamford, Dilek Yalcin, Wil Gardner, David A. Winkler, Thomas M. Kohl, Benjamin W. Muir, Shaun Howard, Eric A. Bruton, Paul J. Pigram
Summary: The self-organizing map with relational perspective mapping (SOM-RPM) is an unsupervised machine learning method used for visualizing and interpreting high-dimensional hyperspectral data. In this study, SOM-RPM was applied to stitched ToF-SIMS datasets to provide a direct comparison in both 2D and 3D. The quantitative assessment of annealing-induced chemical breakdown trends was conducted on spin-coated polyaniline (PANI) films, revealing differences in peak intensity ratios.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Medicinal
Yiwen Lu, Dilek Yalcin, Paul J. Pigram, Lewis D. Blackman, Mario Boley
Summary: We developed a data-driven methodology based on statistical machine learning for the probabilistic modeling of PISA morphologies. The model showed good prediction performance for mixtures of known monomer pairs but weaker performance for extrapolation to new monomer combinations. However, it still achieved nontrivial prediction performance and was able to select a smart set of experiments for creating empirical phase diagrams.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Electrochemistry
Georgina Armendariz-Vidales, Pria Ramkissoon, Peter J. Barnard, Conor F. Hogan
Summary: This study investigated a multicolour ECL system composed of BODIPY and DOTA. Energy transfer could be initiated by optical excitation when a lanthanide ion was bound to the DOTA ligand. In the absence of lanthanide ions, the conjugate exhibited a dual wavelength ECL behavior at 549 and 730 nm in both annihilation and co-reactant pathways, which could be modulated by controlling the potential. Using the 3D ECL technique, the potential and concentration dependence of the ECL emission were characterized, revealing various mechanisms giving rise to ECL emissions in the visible and near-infrared.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Coatings & Films
Wil Gardner, David A. Winkler, David L. J. Alexander, Davide Ballabio, Benjamin W. Muir, Paul J. Pigram
Summary: In this study, two different ToF-SIMS imaging datasets were used to evaluate the impact of data preprocessing methods and SOM hyperparameters on the performance of SOM. It was found that preprocessing is generally more important than hyperparameter selection, and there are complex interactions between different parameters. The results of this study are important for understanding the effects of data processing on hyperspectral imaging data.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Analytical
Sevvandi Kandanaarachchi, Wil Gardner, David L. J. Alexander, Benjamin W. Muir, Philippe A. Chouinard, Sheila G. Crewther, David J. Scurr, Mark Halliday, Paul J. Pigram
Summary: This study investigated six different computational methods for tiling artifact removal in ToF-SIMS imaging. The results show that there is no universally acceptable method and the effectiveness of the artifact removal method depends on the specific characteristics of the data set analyzed.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Norton G. West, Sarah E. Bamford, Paul J. Pigram, Jisheng Pan, Dong-Chen Qi, Adam Mechler
Summary: This study demonstrates hierarchical self-assembly using metal coordinating helical beta-oligoamides, leading to the formation of specific morphologies. By controlling different metals and metalates, the design of metallosupramolecular frameworks is achieved, establishing a platform technology for functional thin layer materials.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Analytical
Wil Gardner, David A. Winkler, Suzanne M. Cutts, Steven A. Torney, Geoffrey A. Pietersz, Benjamin W. Muir, Paul J. Pigram
Summary: Feature extraction algorithms are important for reducing data dimensionality, but most methods do not consider spatial information. This study introduces a convolutional autoencoder algorithm that can be applied to hyperspectral ToF-SIMS imaging and achieves better results.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Natasha S. Adamson, Ashton G. Theakstone, Lachlan C. Soulsby, Egan H. Doeven, Emily Kerr, Conor F. Hogan, Paul S. Francis, Lynn Dennany
Summary: A new method for exploring potential-dependent multi-colour co-reactant electrochemiluminescence was presented, involving measurements of potentials, current, and emission. The study provided new insights into multifaceted ECL systems, including the understanding of counter electrode potential properties and mechanism-based rationalization of interactions between different metal-complex luminophores.
