Article
Chemistry, Analytical
Sili Yi, Wei Shi, Xin Yang, Zufu Yao
Summary: Metal-organic frameworks (MOFs) derived hollow heterostructured metal oxide semiconductors (MOSs) are functional porous materials with distinctive physiochemical properties. The advantages of MOF-derived hollow MOSs heterostructures, such as large specific surface, high intrinsic catalytic performance, abundant channels for electron transfer and mass transport, and strong synergistic effect, make them promising candidates for gas sensing. This review provides a comprehensive overview on the advantages and applications of MOF-derived hollow MOSs heterostructures for the detection of toxic gases, and discusses the perspective and challenge of this interesting field to guide future design and development of accurate gas sensors.
Review
Materials Science, Multidisciplinary
Zhenyu Zhai, Xiuling Zhang, Xiaoke Hao, Ben Niu, Congju Li
Summary: Metal-organic frameworks (MOFs) are considered as ideal sensing materials due to their high specific surface area and adsorption ability, which can effectively solve some problems of traditional gas sensors, such as sensitivity and energy consumption.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Review
Chemistry, Multidisciplinary
Yao Jiang, Peng Tan, Xiao-Qin Liu, Lin-Bing Sun
Summary: Adsorptive separation is crucial in various industries, but the requirements for adsorbents differ during adsorption and desorption processes. To address this challenge, the development of process-oriented smart adsorbents (POSAs) that dynamically adjust pore structures and surface properties is essential for enhancing efficiency in adsorption and desorption simultaneously.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Physical
Matthew A. Pearson, Mircea Dinca, Jeremiah A. Johnson
Summary: The study focused on synthesizing polyMOF ligands featuring MOF-forming benzenedicarboxylic acid linkers using common radical polymerization techniques: reversible addition fragmentation chain transfer (RAFT) polymerization and free radical polymerization (FRP). It was found that high-dispersity ligands prepared through FRP formed crystalline polyMOFs, while low-dispersity ligands prepared through RAFT required additional H(2)bdc to yield crystalline materials similar to MOF-5 and UiO-66. This work suggests that ligand dispersity is a key factor for polyMOF synthesis and presents new possibilities for developing polymer-MOF hybrids based on radical polymerization.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ziqi Zhou, Qiaomei Ke, Manni Wu, Ling Zhang, Ke Jiang
Summary: Metal-organic frameworks (MOFs) are efficient carriers for controlled drug delivery due to their large surface area and adjustable pore size. A new approach called Pore Space Partition (PSP) was used to effectively encapsulate and pH-controlled co-delivery of two guest molecules. ZIF-8's pore space was partitioned by encapsulating the large molecule ursolic acid (UA), and the remaining space was filled with the small molecule 5-fluorouracil (5-FU). This approach resulted in a high loading capacity of UA (12.80 wt %) and 5-FU (11.20 wt %) in the 5-FU&UA@ZIF-8. This smart carrier exhibited pH-controlled delivery of UA and surprisingly showed pH-responsive delivery of 5-FU after pore space partition. The co-delivery of 5-FU and UA demonstrated excellent anticancer performance against 4T1 cells.
ACS MATERIALS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Xueling Yuan, Lixia Sun, Junqi Wang, Dankui Liao, Jianhua Sun
Summary: Pyrolyzing metal-organic frameworks to prepare metal oxides is a promising method for gas sensors. Noble metal doping effectively improves gas sensitivity, as demonstrated by the enhanced performance of Ag-doped SnO2 in gas-sensing experiments.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Engineering, Environmental
Qiong Chen, Yongheng Zhang, Shuyi Ma, Yuhua Wang, Peiyu Wang, Guoheng Zhang, Duojie Gengzang, Haiyan Jiao, Mingxiao Wang, Wanjun Chen
Summary: The study focused on synthesizing multishelled NiO/NiCo2O4 hollow microspheres using bimetal-organic frameworks of Ni-Co-BTC as a template, which exhibited high sensitivity and rapid response/recovery time to acetone gas at low working temperature. The enhanced performance was attributed to the efficient diffusion path, nanoscale p-p heterojunctions, and the combination of chemical and electrical catalytic effects.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Shulin Li, Shilin Zeng, Yuyang Tian, Xiaofei Jing, Fuxing Sun, Guangshan Zhu
Summary: Two stable isomorphic cationic MOFs were synthesized, displaying flexible features, and the effects of different activation methods on their structural flexibility were explored. Continuous phase transformation of one MOF was verified by powder X-ray diffraction, showing higher gas separation abilities.
Article
Engineering, Electrical & Electronic
Haoxiang Ma, Yang Yang, Jingfeng Wang, Changzheng Li, Zhimin Fan, Junqi Wang
Summary: Gas molecules and volatile compounds in the air have an impact on product purity and health. Luminescence metal-organic frameworks (LMOFs) have been widely reported as sensor materials for detecting different compounds. This review explores the luminescence mechanisms of LMOFs and the interactions between host and guest molecules, and describes the state-of-the-art LMOF-based sensors for various gas molecules and volatile organic compounds (VOCs). It can contribute to the further development and practical application of LMOFs in sensor combinations.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Nanoscience & Nanotechnology
Brij Mohan, Shixuan Ma, Sandeep Kumar, Yang Yang, Peng Ren
Summary: A new array of ligand 5-(4H-1,2,4-triazol-4-yl)pyridin-3-ol-linked silver coordinated metal-organic frameworks (Ag-MOFs) is designed as a promising sensor for rapid detection of Cr2O72-, MnO4-, humic acid (HA), and Fe3+ ions in water. The designed Ag-MOFs show excellent performance in analyte detection with fast, stable, and reusable characteristics, as confirmed by various measurements.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhen Zhang, Jie Zhou, Xue Chen, Tong Yan, Hanxu Sun, Lin Du, Qihua Zhao
Summary: By utilizing solvent-oriented structural self-assembly and solvent-induced single-crystal to single-crystal transformation strategies, eight structurally distinct Cd-CPs were controllably synthesized with the same linkers for the first time. The significant role of solvents in the self-assembly and transformations in CPs has been demonstrated, and rare reversible CP-based phase transition phenomena at low temperatures were observed, including the first example of a novel turn-on-off CP-based Fe3+ ion sensor.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Hyegi Min, Ohchan Kwon, Jihyun Lee, Eunji Choi, Jihee Kim, Nahyeon Lee, Kiwon Eum, Kyu Hyoung Lee, Dae Woo Kim, Wooyoung Lee
Summary: This study successfully modified the electrical conductivity of metal-organic frameworks (MOFs) through surface oxidation, enhancing their potential for gas sensing applications. By producing nanoscale oxide layers and electron-rich dopants, the conductivity of zeolitic imidazolate framework-8 (ZIF-8) was effectively improved. The resulting device demonstrated remarkable sensitivity and selectivity in detecting NO2 gas, surpassing existing sensing materials. The methodology of manipulating MOF conductivity through surface oxidation shows promise in accelerating the development of MOF-hybridized conductive channels for electrical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Applied
Ulku Kokcam-Demir, Niels Tannert, Marco Bengsch, Alex Spiess, Carsten Schlusener, Sandra Niessing, Christoph Janiak
Summary: Composites of aluminum metal-organic frameworks (Al-MOFs) and graphite oxide (GO) were synthesized with maintained crystallinity and morphology, showing increased surface area and porosity due to the synergistic effect between MOF and GO.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Engineering, Environmental
Rui Zhang, Lihui Lu, Yangyang Chang, Meng Liu
Summary: This article reviews the fundamental aspects and applications of metal-organic frameworks (MOFs) in gas sensors, and discusses various techniques of monitoring gases using MOFs as functional materials. Insights and perspectives for further challenges faced by MOFs are also discussed.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Gerson J. Leonel, Cameron B. Lennox, Manuel Scharrer, K. Jayanthi, Tomislav Friscic, Alexandra Navrotsky
Summary: This study investigates the energetics of boron-imidazolate frameworks (BIFs) synthesized by mechanochemistry. The stabilizing effect of metal nodes in sodalite (SOD) and diamondoid (dia) topologies is assessed using the same tetratopic linker based on tetrakis-(imidazolyl)boric acid but with different monovalent cation metal nodes. The thermodynamic stability of the frameworks is determined by the enthalpy of formation from endmembers, showing that heavier metal nodes promote greater energy stabilization in denser structures. The results suggest a unified aspect of thermodynamic stabilization across MOF systems.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)