Article
Chemistry, Analytical
Adelaide Miranda, Pieter A. A. De Beule
Summary: This study introduces a new design for the electrode of a photoionization detector based on thin-film technology, achieving a doubling of photon efficiency for photoionization by replacing the common metal grid electrode's VUV lamp surface window with a chromium/gold thin film. Additionally, replacing the hygroscopic LiF lamp window surface with a metallic layer offers the possibility to vastly increase operational lifetime of low-pressure Argon VUV lamps.
Article
Chemistry, Multidisciplinary
De-Jing Li, Qiao-hong Li, Zhi-Gang Gu, Jian Zhang
Summary: This study successfully prepared a series of 2D MOFs films with giant nonlinear optical limiting response using a liquid-phase epitaxial method. The research provides new film candidates for nonlinear optical application and reveals the modulation mechanism of metalloporphyrinic groups on NLO performance.
Article
Nanoscience & Nanotechnology
De-Jing Li, Yi-Bo Tian, Qi Lin, Jian Zhang, Zhi-Gang Gu
Summary: In this study, two-dimensional (2D) metalloporphyrin-based MOF Zn-2[TCPP(M)] films with abundant pi-pi interactions were successfully fabricated by the liquid-phase epitaxial layer-by-layer approach and assembled into photodetectors. The ZnTCPP(M)-based photodetectors exhibited an excellent photoresponse, and the metalloporphyrinic groups in ZnTCPP(M) played a significant role in modulating the photoresponse. The ZnTCPP(Zn) film-based device showed the best photodetection performance with high on/off ratio, responsivity, short rise/fall times, and large detectivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Shuaihang Hou, Zhiliang Li, Yuli Xue, Xinkun Ning, Jianglong Wang, Shufang Wang
Summary: SnSe thin films with a-axis orientation were successfully prepared, exhibiting a relatively high power factor at 600 K after optimizing the tin vacancy concentration. The thermal conductivity of the thin films decreased, while an ultrahigh estimated-zT value was achieved in the in-plane direction.
MATERIALS TODAY PHYSICS
(2021)
Article
Plant Sciences
Bin Liu, Lu Zhang, Linda Rusalepp, Eve Kaurilind, Hassan Yusuf Sulaiman, Tonu Pussa, Ulo Niinemets
Summary: The study demonstrated that heat priming treatment can enhance heat tolerance of Achillea plants by improving stomatal conductance, synthesis of volatile and non-volatile secondary compounds, and enhancing photosynthesis under subsequent heat shock stress.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Engineering, Environmental
Mahan Ghazi, Sajjad Janfaza, Hamed Tahmooressi, Nishat Tasnim, Mina Hoorfar
Summary: This study focuses on improving the selectivity of microfluidic gas sensors for detecting a range of VOCs by adding micro- and nanofeatures to the microchannel. The results show an average improvement of 64.4% and 120.9% in sensor selectivity with microfeatures and both nano- and microfeatures, respectively. Characterization of the nano- and microfeatures was done through SEM, XPS, and water contact angle measurement.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Marijn W. van de Putte, Mark Huijben
Summary: To enable miniaturized thermoelectric energy generation devices for wireless sensors, high-quality thin film architectures are needed. This study explores the impact of epitaxial alignment between the orthorhombic SnSe crystal structure and the orthorhombic DyScO3 substrate. The achieved (100)-oriented single crystalline SnSe thin films exhibit the formation of two domain types, and show a sudden increase in electrical conductivity above 400 K. The epitaxial alignment enhances thermoelectric performance and enables the realization of miniaturized TEG devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Sanchari Dasgupta, Subharanjan Biswas, Kevin Dedecker, Eddy Dumas, Nicolas Menguy, Bruno Berini, Bertrand Lavedrine, Christian Serre, Cedric Boissiere, Nathalie Steunou
Summary: The design of efficient adsorbents for selective capture of volatile organic compounds (VOCs) is a global concern that affects air quality and preservation of cultural heritage. Metal-organic frameworks (MOFs) thin films, particularly UiO-66(Zr)-2CF3, show promising results in terms of high adsorption selectivity and stability for the capture of acetic acid (AA) in humid conditions similar to those found in museums.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Dominique Grandjean, Caroline Elie, Capucine Gallet, Clotilde Julien, Vinciane Roger, Loic Desquilbet, Guillaume Alvergnat, Severine Delarue, Audrey Gabassi, Marine Minier, Laure Choupeaux, Solen Kerneis, Constance Delaugerre, Jerome Le Goff, Jean-Marc Treluyer
Summary: The study evaluates the diagnostic accuracy of canine olfaction in non-invasive detection of SARS-CoV-2 infection. The results show that canine detection has a high sensitivity and can be used as an alternative method in mass screening.
Editorial Material
Nanoscience & Nanotechnology
Peter Gregorcic
Summary: Experimental results show that controlled contamination is crucial for consistent surface wettability alterations after low-temperature annealing. Analysis reveals that contamination with hydrophobic PDMS may arise from the furnace, resulting in water repellency on the surface. Annealing in a contaminant-free furnace preserves initial superhydrophilicity, while annealing in a contaminated furnace leads to different wettability transitions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Agriculture, Multidisciplinary
Jingwen Li, Zhixin Wang, Jonathan Crane, Yu Wang
Summary: This study investigated the contribution of volatile and non-volatile metabolites to the flavor variation of five carambola cultivars using a combination strategy of GC-MS/O-based volatilomics and LC-MS-based metabolomics. Several significant flavor-related pathways were identified, including amino acid biosynthesis or metabolism, terpenoids, fatty acids, sugar and organic acid, and flavonoids. The results showed that flavor traits of different carambola cultivars differed due to the up- or downregulation of metabolites in the flavor-related pathways. This study provides a valuable reference for breeders and researchers interested in the regulation of flavor.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Editorial Material
Plant Sciences
Sumit Ghosh
Summary: Forest vegetation emits terpene enantiomers, but their emission mechanisms and ecological functions are not well understood. In a study on tropical rainforest ecosystem, Byron et al. observed distinct diel trends and sources of enantiomer emission, as well as a significant change in (-)-alpha-pinene emission during severe drought, potentially promoting cloud formation.
TRENDS IN PLANT SCIENCE
(2023)
Article
Chemistry, Physical
Snehanjan Acharyya, Plaban Kumar Bhowmick, Prasanta Kumar Guha
Summary: Accurate and selective detection of target gas/volatile organic compounds (VOCs) is achieved through a combination of nanomaterials-based chemiresistive gas sensors and machine learning techniques. The use of different metal nanoparticles for surface decoration leads to sensitive and diverse sensing patterns among VOCs. The application of machine learning models, particularly a deep neural network model with time series response sequence, enables qualitative and quantitative detection of VOCs with high accuracy and fast prediction time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Mingchao Wang, Zhe Zhang, Haixia Zhong, Xing Huang, Wei Li, Mike Hambsch, Panpan Zhang, Zhiyong Wang, Petko St Petkov, Thomas Heine, Stefan C. B. Mannsfeld, Xinliang Feng, Renhao Dong
Summary: 2D conjugated metal-organic frameworks (2D c-MOFs) are being used as electroactive materials for chemiresistive sensors, with Ni-2[MPc(NH)(8)] films showing promising results for polarity-selective sensing of water and VOCs. Surface-hydrophobic modification on the films has been found to greatly accelerate recovery during humidity sensing, while also demonstrating polarity-selective response to VOCs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Environmental Sciences
Yao Gu, Baoshuang Liu, Qili Dai, Yufen Zhang, Ming Zhou, Yinchang Feng, Philip K. Hopke
Summary: The study found that controlling motor vehicle use, diesel fuel, and gasoline evaporation during the COVID-19 shutdown can effectively control VOC emissions. In addition, DRN-PMF is an effective method that can reduce the impact of chemical loss at night.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Zhi-Zhou Ma, Qiao-Hong Li, Zirui Wang, Zhi-Gang Gu, Jian Zhang
Summary: The authors demonstrate the enhancement of the nonlinear absorption coefficient of metal-organic framework films by applying an external electric field. The study provides avenues for the regulation and nonlinear optical applications of these materials.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Li-Mei Chang, Zhi-Zhou Ma, Jiandong Huang, Zhi-Gang Gu
Summary: This study reports a series of single and multiple (bi-varietal and tri-varietal) pillar-layered metal-organic framework (MOF) thin films (surface-coordinated MOF thin films, SURMOFs) with high lattice mismatch. The SURMOFs were successfully grown on the substrate surfaces with preferred [001]-orientation using a liquid-phase epitaxial (LPE) layer by layer pump method. The results show that the representative bi-varietal SURMOF with large lattice mismatch has different adsorption behavior from single SURMOFs, providing a new strategy to achieve tuning of the adsorption kinetics performance in sensing applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Jiajin Xia, Baolong Zhu, Qiuling Wan, Yinghua Yu, Shenlin Huang, Jian Zhang, Xueliang Huang
Summary: Transition metal-catalyzed divergent synthesis through alternation of the catalyst is demonstrated, providing an operationally simple way to access different valuable products from the same reactants. A gold-catalyzed cascade reaction of conjugated diynamides with allylic alcohols is described, giving selectively substituted allenes and furans by varying the catalysts. Mechanistic studies reveal a [3,3]-sigmatropic rearrangement and an intramolecular Himbert arene/allene Diels-Alder cycloaddition as additional reaction sequences to access dearomatized products with bicyclo[2,2,2]octadiene core.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yi-Bo Tian, Koichi Tanaka, Li-Mei Chang, Christof Woell, Zhi-Gang Gu, Jian Zhang
Summary: In this study, monolithic and highly oriented chiral metal-organic framework (MOF) thin films were successfully prepared using a layer-by-layer method. The helicity-sensitive absorption of these films showed excellent performance, with an anisotropy factor of 0.41. The chiral MOF thin films also exhibited significant differences in the uptake of enantiomers. A portable sensor device was fabricated to demonstrate the potential for chiral recognition and analysis by monitoring photocurrent signals. This research introduces a new concept for direct circularly polarized photodetectors using chiral building blocks and offers a blueprint for novel devices in chiral optics.
Article
Chemistry, Multidisciplinary
Yi-Bo Tian, Qiao-Hong Li, Zirui Wang, Zhi-Gang Gu, Jian Zhang
Summary: This study investigates the effect of structural asymmetry on the nonlinear optics of metal-organic frameworks (MOFs). Thin films of indium-porphyrinic framework (InTCPP) were grown and the coordination-induced symmetry breaking on their third-order NLO was studied. The results show that InTCPP thin films coordinated with Fe2+ and Fe3+Cl- exhibit enhanced NLO performance, with InTCPP(Fe3+Cl-) causing a 3-fold increase in the nonlinear absorption coefficient compared to InTCPP(Fe2+).
Article
Chemistry, Physical
Wen-Jie Xu, Bo-Xuan Huang, Guangli Li, Fen Yang, Wei Lin, Jia-Xin Gu, Hai-Guang Deng, Zhi-Gang Gu, Hong-Guang Jin
Summary: Integrating donor and acceptor chromophores within a MOF for light harvesting and photocatalysis is challenging. This study successfully integrated an electron donor porphyrin ligand into a naphthalene diimide-based Zr-MOF, resulting in a mixed-ligand MOF with enhanced photocatalytic performance for the oxidative coupling of benzylamine.
Article
Materials Science, Multidisciplinary
Zhi-Run Wang, Jun-Qiang Chen, Qiao-Hong Li, Hai-Xia Zhang, Jian Zhang
Summary: This study reports 2D lead-MOFs that generate white light through the combined effect of free excitons and self-trapped excitons. The synthesized BIF-142-Cl exhibits outstanding white-light emission with color coordinates close to pure white light, excellent color rendering index, and gentle correlation color temperature. Additionally, the emission can be adjusted from blue to white light by changing the excitation wavelength. This synthetic strategy not only offers potential for solid-state lighting materials but also expands possibilities in anticounterfeiting, display media, and information identification fields.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Na Li, Zhi-Gang Gu, Jian Zhang
Summary: This study reports two types of stilbene-based metal-organic framework (MOF) films for photopatterning. The 2D Zn-2(sdc)(2) MOF film shows excellent photosensitive properties with a short photoconversion time, while the 3D MOF Zn4O(sdc)(6) film does not have this property. Furthermore, the Zn-2(sdc)(2) film exhibits reversible fluorescent photoswitch behavior and can achieve high-efficiency, erasable photopatterning with various sizes. This research not only develops a new type of photosensitive crystalline network film, but also provides solutions for erasable photopatterning in optical applications from macroscopic to microscopic scales.
Article
Chemistry, Multidisciplinary
Yi-Hong Xiao, Zhi-Zhou Ma, Xue-Xian Yang, Dong-Sheng Li, Zhi-Gang Gu, Jian Zhang
Summary: This study demonstrates the synthesis of ordered chiral carbon nanodot arrays in a porous material, which enables efficient circularly polarized luminescence. By confining chiral amino acids in the porous material and carbonizing them into chiral carbon nanodots, the transfer of chirality on the excited state is achieved, resulting in strong CPL performance.
Article
Chemistry, Physical
Guoxiang Zhao, Weiyin Yan, Zirui Wang, Yao Kang, Zuju Ma, Zhi-Gang Gu, Qiao-Hong Li, Jian Zhang
Summary: To determine the polarizability and hyperpolarizability of a molecule, key parameters such as excitation energy, transition dipole moment, and dipole moment difference need to be known. This study developed a machine-learning model to predict these properties using the density of states as input. The model effectively estimated the polarizability and second-order hyperpolarizability, but had limitations in predicting dipole moment and first-order hyperpolarizability. The computational efficiency of machine-learning models enables large-scale screening of molecules for specific requirements, providing a potential solution for efficient exploration and analysis.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Ping Shao, Yu-Mei Wan, Luocai Yi, Shumei Chen, Hai-Xia Zhang, Jian Zhang
Summary: In this study, a Cu@BIF-144(Zn) composite is synthesized and shown to exhibit a synergistic effect in CO2RR, enhancing selectivity and activity for the production of multi-electron-transfer products.
Article
Materials Science, Multidisciplinary
Dong-Fei Lu, Shangda Li, Ming-Xue Guan, Yu-Peng Han, Yayong Sun, Xin Wu, Fei Wang, Jian Zhang
Summary: In this study, the first visible-light-active titanium sulfonate metal-organic framework (FIR-138) with 2-fold interpenetrated srs topology was successfully synthesized. FIR-138 exhibited good stability and excellent visible-light absorption performance, and demonstrated outstanding visible-light photocatalytic performance in organic reactions.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jun-Qiang Chen, Hai-Xia Zhang, Zhi-Run Wang, Qin-Long Hong, Jian Zhang
Summary: In this study, a new MOC cage with a unique trigonal bipyramidal configuration was reported, which was constructed by the combination effects of coordination bonds and π-π interactions. The cage structure could be modulated by the metal centers, leading to diverse coordination environments and optical properties.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Hai-Ping Wang, Andreas Eichhoefer, Zhi-Gang Gu, Nathalie Gruber, Adrian-Mihail Stadler
Summary: This study discovered that the reaction between a trinuclear triangular macrocyclic complex and bidentate linkers can produce a prismatic structure and two unprecedented extended 3D frustum-like structures. These structures encapsulate triflate anions in their cavities.
CHEMICAL COMMUNICATIONS
(2023)
