Article
Chemistry, Multidisciplinary
Fu Qiu, Guoqiang Peng, Youkui Xu, Haoxu Wang, Zhiwen Jin
Summary: Copper metal halides are promising scintillators due to their self-trapped excitons mechanism, but their development has faced challenges in the preparation process. A new method for preparing Cs3Cu2Cl5 using sequential vacuum evaporation allows the successful production of large-area and flexible films. Cs3Cu2Cl5 exhibits unique properties such as a large Stokes shift and a wide full width at half-maximum, making it suitable for X-ray imaging.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biophysics
Yanbo Wang, Huan Li, Linlin Cheng, Jinru Zhou, Linglin Fu
Summary: This study investigated the specific recognition between an aptamer modified gold nanoparticle (Apt-AuNP) and its target protein arginine kinase (AK) using a coffee-ring effect (CRE)-based approach. The results showed a ring-disk-ring transition with elevated AK concentration and strong association between Apt-AuNP and AK, as well as a Gompertz growth model for nonspecific protein adsorption onto the AuNPs. The study demonstrated the feasibility of using CRE as an effective tool to profile the specific interactions between NPs and proteins.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Do Thi Thu, Zong-Han Liu, Ya-Chu Lee, Tzu-Wen Kuo, Wei-Lun Sung, Yen-Chang Chu, Yu-Lun Chueh, Weileun Fang
Summary: This study designs and implements a chip-scale amperometric ethanol sensor using the standard commercially available CMOS process and post-CMOS micromachining processes. The sensor consists of a suspended plate with a microhole structure as the working electrode, a fully anchored plate with a microhole structure as the counter electrode, and a microcavity as the electrolyte reservoir. By exploiting the metal and dielectric layers in the CMOS process, the sensor achieves enhanced sensitivity and response time. Measurements show that the sensor has a sensing range of ppm (20-1000 ppm) at room temperature, with a sensitivity of 0.01 nA/ppm and a response time of 6 s. The presented design demonstrates the potential of CMOS-MEMS for amperometric ethanol sensing.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Michael R. Stoneman, Valerica Raicu
Summary: This study investigated the impact of the interaction between a GPCR and its agonist ligand on the dielectric properties of the plasma membrane in living yeast cells using radiofrequency dielectric spectroscopy. The results showed a significant increase in plasma membrane permittivity after exposure to the agonist ligand, while cells lacking the ability to express the specific receptor showed no change. Interestingly, the electrical properties of the cellular interior also underwent a large change after the addition of the agonist, regardless of Ste2 expression.
Article
Engineering, Electrical & Electronic
M. Khan, S. Crispi, M. Hussain, Z. Sarfraz, G. Neri
Summary: This paper reports the development of a conductometric ethanol sensor based on Fe2O3/Co3O4 nano-heterostructures. The electrical and ethanol sensing properties of the synthesized nano-heterostructures were investigated. The results show that the sensor displays improved ethanol sensing ability with good sensitivity, short response/recovery time, repeatability, and selectivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Medicine, Research & Experimental
Emily K. Makowski, Lina Wu, Alec A. Desai, Peter M. Tessier
Summary: The PolySpecificity Particle (PSP) assay is a sensitive flow cytometry method for evaluating antibody nonspecific interactions, overcoming previous limitations and allowing for evaluation of diverse types of antibodies. This assay is more sensitive than standard assays like ELISAs, and has the potential to accelerate the development of safe and effective antibody therapeutics.
Review
Chemistry, Physical
Y. Shi, X. Li, X. F. Sun, X. Shao, H. Y. Wang
Summary: Detection of ethanol is crucial in various fields due to its explosive, colorless and volatile nature. Metal oxide semiconductors (MOS) gas sensors, particularly those based on indium oxide (In2O3), have gained attention for their low cost and convenient detection. This paper summarizes the strategies used in the last decade to enhance the performance of In2O3-based gas sensors for ethanol detection, including morphology modification, doping, heterojunction construction, and the use of composite materials. The sensing mechanism for ethanol detection by gas sensors is also presented.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Gaopeng Xue, Masaya Toda, Xinghui Li, Xiaohao Wang, Takahito Ono
Summary: Magnetic resonance force microscopy is important for non-invasive three-dimensional imaging. A vacuum-packaged magnetic resonance force sensor with high sensitivity was developed for free radical detection in an atmospheric environment.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Alexander M. Jakob, Simon G. Robson, Vivien Schmitt, Vincent Mourik, Matthias Posselt, Daniel Spemann, Brett C. Johnson, Hannes R. Firgau, Edwin Mayes, Jeffrey C. McCallum, Andrea Morello, David N. Jamieson
Summary: This study discusses the material choice of silicon chips containing arrays of single dopant atoms for classical and quantum devices, as well as the method of near-surface implantation of single ions and the associated physics model and limiting factors.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ke Zhang, Yunsheng Li, Yu Shen, Wenrui Zhang
Summary: Au-loaded gamma-Fe2O3 nanocomposites were successfully prepared using a simple hydrothermal method and one-step amino acid synthesis. The material exhibited high purity and mesoporous structure. The sensor based on mesoporous Au-loaded gamma-Fe2O3 nanospheres showed superior performance in detecting ethanol, with high response value, short response/recovery times, excellent selectivity, long-term stability, and the ability to detect as low as 0.2 ppm ethanol. This material holds promise for high-performance ethanol detectors.
Article
Materials Science, Multidisciplinary
Atul Kumar, Pratima Chauhan
Summary: In this study, a simple metal oxide-based VOCs sensor was developed for ethanol detection at room temperature. The sensor exhibited fast response and recovery times, and demonstrated good performance in detecting high concentrations of ethanol. However, the response of the sensor was slightly affected by high humidity.
Article
Materials Science, Multidisciplinary
D. J. Gengzang, W. J. Chen, Q. Chen, G. H. Zhang, C. R. Limao, X. J. An
Summary: In this study, hetero-structured SnO/rGO nanocomposites were successfully synthesized and utilized for gas sensors, showing high response values and relatively fast response time towards ethanol. The superior performances may stem from the pp hetero-junctions between different components, high conductivity of rGO, and functional groups on rGO.
Article
Materials Science, Multidisciplinary
Sushmitha Pedugu Sivaraman, Akhila Maheswari Mohan
Summary: This study focuses on developing simple and fast probe-decorated macro-/mesoporous polymer monolithic solid-state visual colorimetric sensors for quantifying ultratrace amounts of Co2+. By manipulating the structure of the polymer matrix and the composition and concentration of the probe molecules, high selectivity and sensitivity for Co2+ ions were achieved. The proposed sensor materials have the advantages of low detection limits, rapid response, and good data reliability and reproducibility, making them suitable for the detection of environmental water samples.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Physics, Applied
Xiang-Bing Li, Da-Qian Mo, Xiao-Yan Niu, Qian-Qian Zhang, Shu-Yi Ma, Wen-Qiang Dang, Li-Jun Zhang, Yu-Xiang Zhao, Xiao-Bin Liu, Qing Liu, Li-Min Zhao, Yu-Ping Wang
Summary: ZnO-SnO2 composite nanorods with rough surfaces were successfully synthesized and exhibited good ethanol gas sensitivity, accurately measuring continuous ethanol concentration. The sensor also showed good selectivity to ethanol in the presence of other gases.
MODERN PHYSICS LETTERS B
(2021)
Article
Nanoscience & Nanotechnology
Shi Kun Wang, Ao Chen Wang, Chao Yue Zhang, Qian Yu Liu, Jun Di Cheng, Yan Chun Wang, Xiu Ping Gao, Qing Feng Xie, Zhen Xing Zhang, Geng Zhi Sun, Xiao Jun Pan, Jin Yuan Zhou
Summary: A sandwich-structured hollow nanofiber material, In2S3/In2O3/In2S3 (ISOS HNF), was designed using electrospinning and postvulcanization treatments. The ISOS HNF material effectively overcomes the blocking effect in core-shell heterojunction sensors, and shows improved gas response due to the double In2S3/In2O3 heterointerfaces and the porous In2S3 coatings that enhance gas diffusion.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Organic
Alessandro Pedrini, Anjali Devi Das, Roberta Pinalli, Neal Hickey, Silvano Geremia, Enrico Dalcanale
Summary: The study shows that as the alkyl chain length increases from 12 carbon atoms to 16 carbon atoms, the binding mode of viologens with cucurbit[8]uril in water switches from a 1:1 to 2:1 host/guest stoichiometry. This is due to the folding of the major portion of the longer alkyl chain in one CB[8] cavity and the inclusion of the full viologen unit by another host molecule.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Junyi Chen, Briana L. Hickey, Linlin Wang, Jiwon Lee, Adam D. Gill, Alessia Favero, Roberta Pinalli, Enrico Dalcanale, Richard J. Hooley, Wenwan Zhong
Summary: The study demonstrates a method using an array of synthetic hosts and dyes for fluorescence detection of nucleic acid secondary structures, enabling quick differentiation and classification of G-quadruplex structures. By employing a simple multivariate analysis approach, different G-quadruplex structures with similar topological types but different lengths can be identified, making it a simple and widely applicable non-invasive sensing method.
Article
Chemistry, Multidisciplinary
Alessia Favero, Andrea Rozzi, Chiara Massera, Alessandro Pedrini, Roberta Pinalli, Enrico Dalcanale
Summary: The unique temperature, solvent and pH driven vase to kite equilibrium in quinoxaline cavitands allows reversible uptake and release of guests, but the associated cavity breathing reduces complexation strength. This study reports the synthesis and structural characterization of quinoxaline-based cavitand baskets, suggesting potential solutions for cavity rigidification.
SUPRAMOLECULAR CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Neal Hickey, Barbara Medagli, Alessandro Pedrini, Roberta Pinalli, Enrico Dalcanale, Silvano Geremia
Summary: The host-guest inclusion complexes of cucurbiturils with alkyl viologen exhibit various combinations in crystal structures, showcasing complex and interesting architectures. The coexistence of different stoichiometries in the crystal reveals the impact of packing effects on supramolecular complexes.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Physics, Nuclear
S. Bertoldo, G. Maggioni, W. Raniero, C. Carraro, S. Riccetto, F. Sgarbossa, D. Scarpa, A. Andrighetto, A. Mazzolari, A. Gadea, D. R. Napoli, E. Napolitani, D. De Salvador
Summary: This study describes the realization of pulsed-laser diffused thin n+ contacts on high purity germanium (HPGe) and their successful segmentation, as well as the characterization of gamma-ray detectors with good electrical and detection properties. The stability of detector performance was also tested under typical annealing treatment.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Chemistry, Multidisciplinary
Mattia Amorini, Nicolo Riboni, Lucia Pesenti, Valentina Antonia Dini, Alessandro Pedrini, Chiara Massera, Chiara Gualandi, Federica Bianchi, Roberta Pinalli, Enrico Dalcanale
Summary: This study introduces a regenerable membrane for the efficient removal of toxic and carcinogenic PAHs from water, utilizing a cavitand receptor in electrospun PAN fibers. The effective uptake/release of PAHs is demonstrated through the design and synthesis of the cavitand receptor BenzoQxCav, with a removal efficiency ranging from 32% to 99%. The membrane's regeneration is achieved by exploiting the pH-driven conformational switching of the cavitand between vase and kite forms.
Article
Chemistry, Multidisciplinary
Giuseppe Soavi, Alessandro Pedrini, Anjali Devi Das, Francesca Terenziani, Roberta Pinalli, Neal Hickey, Barbara Medagli, Silvano Geremia, Enrico Dalcanale
Summary: The effect of the host-guest interaction between cucurbit[8]uril and a model trimethine indocyanine on dye spectral properties and aggregation in water was investigated. The addition of cucurbit[8]uril disrupted the dye aggregates, forming a 1:1 host-guest complex. Supramolecular polymer formation and precipitation were observed at suitable concentrations for NMR experiments.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Andrea Rozzi, Alessandro Pedrini, Roberta Pinalli, Enrico Cozzani, Ivan Elmi, Stefano Zampolli, Enrico Dalcanale
Summary: A highly efficient quinoxaline-based preconcentrator material, in which the intrinsic adsorption capacity of the QxCav has been maximized, was reported. The material consists of silica particles covalently coated with a suitable functionalized QxCav derivative, and the preconcentrator's adsorption capacity is independent of the relative humidity of the incoming air.
Article
Chemistry, Multidisciplinary
Danilo Marchetti, Francesca Portone, Francesco Mezzadri, Enrico Dalcanale, Mauro Gemmi, Alessandro Pedrini, Chiara Massera
Summary: The dynamic behavior of supramolecular organic frameworks (SOFs) based on TPM organic tecton has been studied. The SOF undergoes a reversible single-crystal-to-single-crystal transformation when exposed to organic solvents, resulting in changes in structure and fluorescence. The selectivity of the transformation is dictated by the fitting of the guest in the expanded SOF.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Environmental Sciences
N. Riboni, M. Amorini, F. Bianchi, A. Pedrini, R. Pinalli, E. Dalcanale, M. Careri
Summary: A sensitive and selective method based on solid-phase microextraction-gas chromatography-mass spectrometry was developed for the simultaneous determination of 16 PAHs in snow samples. The method achieved low detection limits and demonstrated reliability in the analysis of these compounds at ultra-trace levels.
Article
Chemistry, Physical
Silvia D'Auria, Alessandro Pedrini, Ilaria Ferraboschi, Jerome Vachon, Cristina Sissa, Roberta Pinalli, Enrico Dalcanale
Summary: In this study, the researchers used two-photon microscopy (2PM) to investigate the compatibility between PE-HEMA and EVOH at the sub-micrometer level. 2PM is a nonlinear fluorescence imaging technique commonly used for thick biological tissue analysis. Polymer blending was visualized using 3D images obtained through 2PM. It was observed that the functionalized PE-HEMA, when reacted with ODIN, formed uniformly distributed blends on the surface and in the bulk, and repeated reprocessing partially reversed the compatibilization by forming ODIN dimers as the most stable H-bonding array in the solid state.
Article
Chemistry, Multidisciplinary
Francesca Portone, Mattia Amorini, Matteo Montanari, Roberta Pinalli, Alessandro Pedrini, Roberto Verucchi, Roberto Brighenti, Enrico Dalcanale
Summary: This study presents the first example of a synthetic molecular auxetic polymer obtained by embedding a conformationally expandable cavitand as a crosslinker into a rigid polymer of intrinsic microporosity. The auxetic behavior of the material is predicted and supported by a specific micromechanical model, and experimentally verified through mechanical tests. The results show that the conformational expansion of the cavitand crosslinker is responsible for the observed negative Poisson's ratio.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Francesco Bertocchi, Danilo Marchetti, Sandra Doria, Mariangela di Donato, Cristina Sissa, Mauro Gemmi, Enrico Dalcanale, Roberta Pinalli, Andrea Lapini
Summary: Our study investigates the impact of hydrogen bond-assisted H-aggregate formation on the optical properties of two functionalized naphthyridine derivatives, ODIN-EtPh and ODIN-But. Through a combination of techniques including X-ray and electron crystallography, spectroscopy, and pump-probe spectroscopy, we reveal that the formation of dimers for ODIN derivatives is inhibited in polar solvents while favored in solvents with poor hydrogen bond-forming capabilities. The presence of a phenyl group linked to the ureidic unit stabilizes the charge-transfer excited state of ODIN derivatives, leading to a reduction in fluorescence emission.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Andrea Cesari, Daniele Rosa-Gastaldo, Alessandro Pedrini, Federico Rastrelli, Enrico Dalcanale, Roberta Pinalli, Fabrizio Mancin
Summary: This study presents a novel strategy for NMR chemosensors by utilizing self-assembled cavity structures on silica nanoparticles. These nanohybrids demonstrate selective detection of physiologically relevant compounds through STD-based NMR experiments.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Andrea Rozzi, Alessandro Pedrini, Roberta Pinalli, Chiara Massera, Ivan Elmi, Stefano Zampolli, Enrico Dalcanale
Summary: The selectivity and efficiency of benzene and toluene uptake at the gas-solid interface can be greatly improved by partially rigidifying the receptor cavity of quinoxaline cavitands and immobilizing them onto silica gel particles.
CHEMICAL COMMUNICATIONS
(2022)