Metal–Organic Frameworks (MOFs)-Based Piezoelectric-Colorimetric Hybrid Sensor for Monitoring Green Leaf Volatiles DOI
Laxmi Raj Jaishi, Wei Ding,

Rick A. Kittelson

и другие.

ACS Sensors, Год журнала: 2024, Номер 9(12), С. 6553 - 6562

Опубликована: Ноя. 26, 2024

Green leaf volatiles (GLVs) are organic compounds emitted by plants in response to insect attacks, offering early detection potential. Current GLV methods like gas chromatography–mass spectroscopy (GC-MS) costly and complex lack real-time monitoring capability. There is an unmet need for affordable portable sensors with high sensitivity monitor GLVs real time. In this study, we developed a novel sensor capable of capturing piezoelectric colorimetric signals the sensitive selective 1-hexanol, well-known green volatile. We used micro quartz tuning fork (MQTF) as multifunctional transducer. The MQTF's two prongs were coated metal–organic framework (MOF)-thymol blue hybrid sensing material, enabling through both color change resonating frequency shift upon 1-hexanol binding. MOFs offer surface area tunable pore size, which enhance selectivity. sensor's indicates mass due binding MOFs, while signal relies on thymol blue's reaction 1-hexanol. Our test results demonstrate ability detect from 62.5 ppb 250 ppm selectivity when integrated. Due its compact affordability, easy fabrication, wide range, selectivity, colorimetric-piezoelectric could serve effective tool herbivore attacks timely crop protection strategies.

Язык: Английский

Wearable MOF Biosensors: A New Frontier in Real-Time Health Monitoring DOI
Navid Rabiee

TrAC Trends in Analytical Chemistry, Год журнала: 2025, Номер unknown, С. 118156 - 118156

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

2
Extrusion Printing of Surface‐Functionalized Metal‐Organic Framework Inks for a High‐Performance Wearable Volatile Organic Compound Sensor DOI Creative Commons
Xiao Wang, Hao Qi, Yuzhou Shao

и другие.

Advanced Science, Год журнала: 2024, Номер 11(25)

Опубликована: Апрель 24, 2024

Abstract Wearable sensors hold immense potential for real‐time and non‐destructive sensing of volatile organic compounds (VOCs), requiring both efficient performance robust mechanical properties. However, conventional colorimetric sensor arrays, acting as artificial olfactory systems highly selective VOC profiling, often fail to meet these requirements simultaneously. Here, a high‐performance wearable array visual detection is proposed by extrusion printing hybrid inks containing surface‐functionalized materials. Surface‐modified hydrophobic polydimethylsiloxane (PDMS) improves the humidity resistance sensitivity PDMS‐coated dye/metal‐organic frameworks (MOFs) composites. It also enhances their dispersion within liquid PDMS matrix, thereby promoting high‐quality extrusion‐printing inks. The enable direct precise on diverse substrates, forming uniform high particle‐loading (70 wt%) film. printed film flexible substrate demonstrates satisfactory flexibility stretchability while retaining excellent from dye/MOFs@PDMS particles. Further, exhibits enhanced sub‐ppm levels, remarkable relative (RH) 90%, differentiation ability eight distinct VOCs. Finally, proves practical in situ monitoring wheat scab‐related biomarkers. This study presents versatile strategy designing effective gas with widespread applications.

Язык: Английский

Процитировано

9
Advances in piezoelectric nanogenerators for self-powered cardiac care DOI Creative Commons
Shumao Xu,

Xiao Wan,

Farid Manshaii

и другие.

Nano Trends, Год журнала: 2024, Номер 7, С. 100042 - 100042

Опубликована: Июнь 18, 2024

Piezoelectricity has emerged as a pivotal platform technology in bioengineering to advance cardiac healthcare. Unlike common pacemakers, these devices capitalize on the mechanical energy derived from movements power themselves, presenting sustainable alternative battery constraints faced by current implantable devices. This review explores advances piezoelectric nanogenerators for monitoring and therapy, highlighting their capabilities not only track activity, but also provide therapeutic interventions reliable pacemakers. It discusses electric stimulation effects biocompatible integration with human biology, positioning at forefront of healthcare solutions, thereby enhancing effectiveness, durability, personalized care.

Язык: Английский

Процитировано

5
Olfactory Visualization Sensing Array Made with CelluMOFs to Predict Fruit Ripeness Using Deep Learning DOI

Mingming Zhao,

Huizi Lu,

Zhiheng You

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(42), С. 56623 - 56633

Опубликована: Окт. 15, 2024

Developing a colorimetry-based artificial scent screening system (i.e., an olfactory visual sensing system) with high sensitivity and accurate pattern recognition for detecting fruit ripeness remains challenging. In this work, we construct flexible dye/CelluMOFs-based sensor array improved on-site detection of characteristic gases fruits integrate densely connected convolutional network (DenseNet) into the array, enabling it to recognize unique fingerprints categorize fruits. system, CelluMOFs are synthesized through in situ growth γ-cyclodextrin metal–organic frameworks (γ-CD-MOFs) on fiber filter paper fabricate uniform, porous dye/CelluMOFs sensitive membrane. Compared pristine paper, exhibit increased porosity 62 times higher specific surface area 3-fold increase dye loading capacity after 12 h adsorption. The prepared film shows outstanding mechanical stability negligible deviation 100 cycles rubbing. colorimetric visualization arrays multiple chips, enable nine kinds odors achieve response at 8–1500 ppm trans-2-hexenal, showcasing remarkably low gas thresholds. On basis ppm-level limit sensitivity, fabricated typically used assessment by integrating DenseNet. This approach achieves satisfactory classification accuracy 99.09% validation set, high-precision prediction levels.

Язык: Английский

Процитировано

4
Tailored Fluorescent Metal–Organic Frameworks Hybrid Membrane Sensor Arrays: Simultaneous and Selective Quantification of Multiple Antibiotics DOI Creative Commons
Tongtong Ma, Qiao Huang,

Lei Yuan

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 26, 2025

Abstract Sensor array offers significant potential for rapid, high‐throughput antibiotic detection. However, cross‐reactivity‐based sensor arrays often lack accuracy, despite comprehensive data analysis; while traditional high‐affinity‐based sensors based on antibodies/aptamers frequently suffer from complicated design and poor robustness. Here, a filterable paper‐based fluorescent metal–organic frameworks (MOFs) is developed one‐to‐one recognition quantification of multiple antibiotics. Three representative MOFs are designed to exceptional affinity specificity the target antibiotic. A filtration‐assisted detection enhances sensitivity, achieving parts‐per‐billion (ppb)‐level in mixed solutions. The proposed approach integrates signal generation, streamlined 10‐min process. robustness also enables direct raw samples containing organic solvents, which not achievable by conventional methods. Notably, can be easily incorporated into smartphone‐based portable device, coupled with user‐friendly image analysis applet one‐step extraction quantitative chicken samples. Leveraging MOFs’ versatility, this method extended simultaneously detect broad range antibiotics, offering universal, accurate various chemical targets.

Язык: Английский

Процитировано

0
Sponge‐Inspired Porous Sensor for Wide‐Spectrum Detection of Organic Liquids, Gases, and Isomers DOI
Chunyi Hu, Qiang Sun, Hongyi Liu

и другие.

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Abstract Currently, the identification of organics, including gases, liquids, and isomers, relies heavily on sophisticated analytical equipment or meticulously crafted yet costly materials such as COFs MOFs. Consequently, developing a straightforward strategy to accurately identify organic isomers simultaneously presents significant challenge. Inspired by porous structure sponge that allows it absorb multiple liquids quickly, broad‐spectrum micro‐nano porous‐structure sensor (BPS) is designed using polydimethylsiloxane (PDMS), highly conductive nanoparticle carbon black (CB) micron‐sized thermal expansion microspheres (EM), which utilizes enhance unique swelling interaction between PDMS various compounds, gas/liquids, aqueous solutions, mixed even perform quantitative analysis. There are no reports sensors, BPS, capable detecting types matter. The BPS also demonstrates robust performance, retaining its self‐cleaning property after soaking in water, acids, alkalis. wide spectrum high sensitivity identifying volatile molecules make have great potential chemical industry, coal, transportation, other fields.

Язык: Английский

Процитировано

0
Advancing Wearable VOC Sensors: A Roadmap for Sustainable Agriculture and Real-Time Plant Health Monitoring DOI Creative Commons
Sina Jamalzadegan, Jin Xu, Yiyang Shen

и другие.

Chem & Bio Engineering, Год журнала: 2025, Номер unknown

Опубликована: Июнь 2, 2025

Язык: Английский

Процитировано

0
Solid Supports and New Advanced Materials used in Microextraction processes Metal-organic framework-based solid-phase microextraction for air samples analysis: a mini-review DOI
Małgorzata Rutkowska

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 118021 - 118021

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

2
Metal–Organic Frameworks (MOFs)-Based Piezoelectric-Colorimetric Hybrid Sensor for Monitoring Green Leaf Volatiles DOI
Laxmi Raj Jaishi, Wei Ding,

Rick A. Kittelson

и другие.

ACS Sensors, Год журнала: 2024, Номер 9(12), С. 6553 - 6562

Опубликована: Ноя. 26, 2024

Green leaf volatiles (GLVs) are organic compounds emitted by plants in response to insect attacks, offering early detection potential. Current GLV methods like gas chromatography–mass spectroscopy (GC-MS) costly and complex lack real-time monitoring capability. There is an unmet need for affordable portable sensors with high sensitivity monitor GLVs real time. In this study, we developed a novel sensor capable of capturing piezoelectric colorimetric signals the sensitive selective 1-hexanol, well-known green volatile. We used micro quartz tuning fork (MQTF) as multifunctional transducer. The MQTF's two prongs were coated metal–organic framework (MOF)-thymol blue hybrid sensing material, enabling through both color change resonating frequency shift upon 1-hexanol binding. MOFs offer surface area tunable pore size, which enhance selectivity. sensor's indicates mass due binding MOFs, while signal relies on thymol blue's reaction 1-hexanol. Our test results demonstrate ability detect from 62.5 ppb 250 ppm selectivity when integrated. Due its compact affordability, easy fabrication, wide range, selectivity, colorimetric-piezoelectric could serve effective tool herbivore attacks timely crop protection strategies.

Язык: Английский

Процитировано

2