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

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(25)

Published: April 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.

Language: Английский

Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors DOI Creative Commons

Yibing Luo,

Jianye Li,

Qiongling Ding

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: May 24, 2023

Abstract Breathing is an inherent human activity; however, the composition of air we inhale and gas exhale remains unknown to us. To address this, wearable vapor sensors can help people monitor in real time avoid underlying risks, for early detection treatment diseases home healthcare. Hydrogels with three-dimensional polymer networks large amounts water molecules are naturally flexible stretchable. Functionalized hydrogels intrinsically conductive, self-healing, self-adhesive, biocompatible, room-temperature sensitive. Compared traditional rigid sensors, hydrogel-based humidity directly fit skin or clothing, more suitable real-time monitoring personal health safety. In this review, current studies on investigated. The required properties optimization methods introduced. Subsequently, existing reports response mechanisms summarized. Related works their application safety presented. Moreover, potential field sensing elucidated. Finally, research status, challenges, future trends hydrogel gas/humidity discussed.

Language: Английский

Citations

121
A star-nose-like tactile-olfactory bionic sensing array for robust object recognition in non-visual environments DOI Creative Commons
Mengwei Liu, Yujia Zhang, Jiachuang Wang

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Jan. 10, 2022

Abstract Object recognition is among the basic survival skills of human beings and other animals. To date, artificial intelligence (AI) assisted high-performance object primarily visual-based, empowered by rapid development sensing computational capabilities. Here, we report a tactile-olfactory array, which was inspired natural sense-fusion system star-nose mole, can permit real-time acquisition local topography, stiffness, odor variety objects without visual input. The information processed bioinspired olfactory-tactile associated machine-learning algorithm, essentially mimicking biological fusion procedures in neural mole. Aiming to achieve identification during rescue missions challenging environments such as dark or buried scenarios, our intelligent could classify 11 typical with an accuracy 96.9% simulated scenario at fire department test site. bionic required no input showed superior tolerance environmental interference, highlighting its great potential for robust difficult where methods fall short.

Language: Английский

Citations

117
Recent Progress in Sensor Arrays: From Construction Principles of Sensing Elements to Applications DOI
Tian Li, Xueying Zhu, Xin Hai

et al.

ACS Sensors, Journal Year: 2023, Volume and Issue: 8(3), P. 994 - 1016

Published: Feb. 27, 2023

The traditional sensors are designed based on the "lock-and-key" strategy with high selectivity and specificity for detecting specific analytes, which however not suitable multiple analytes simultaneously. With help of pattern recognition technologies, sensor arrays excel in distinguishing subtle changes caused by multitarget similar structures a complex system. To construct array, sensing elements undoubtedly indispensable units that will selectively interact targets to generate unique "fingerprints" distinct responses, enabling identification among various through methods. This comprehensive review mainly focuses construction strategies principles elements, as well applications array detection target wide range fields. Furthermore, present challenges further perspectives discussed detail.

Language: Английский

Citations

102
In situ anchoring Cu nanoclusters on Cu-MOF: A new strategy for a combination of catalysis and fluorescence toward the detection of H2O2 and 2,4-DNP DOI
Huijun Li, Yingying Wu, Zhouqing Xu

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147508 - 147508

Published: Nov. 28, 2023

Language: Английский

Citations

75
Smart materials for flexible electronics and devices: hydrogel DOI Creative Commons
Taposhree Dutta, Pavan Chaturvedi, Ignacio Llamas‐Garro

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(19), P. 12984 - 13004

Published: Jan. 1, 2024

In recent years, flexible conductive materials have attracted considerable attention for their potential use in energy storage devices, touch panels, sensors, memristors, and other applications.

Language: Английский

Citations

23
An artificial olfactory system with sensing, memory and self-protection capabilities DOI
Zhiyi Gao, Shuai Chen, Rui Li

et al.

Nano Energy, Journal Year: 2021, Volume and Issue: 86, P. 106078 - 106078

Published: April 20, 2021

Language: Английский

Citations

72
Ultrasensitive, Specific, and Rapid Fluorescence Turn‐On Nitrite Sensor Enabled by Precisely Modulated Fluorophore Binding DOI Creative Commons
Zhiwei Ma,

Ji‐Guang Li,

Xiao Hu

et al.

Advanced Science, Journal Year: 2020, Volume and Issue: 7(24)

Published: Nov. 13, 2020

The precise regulation of fluorophore binding sites in an organic probe is great significance toward the design fluorescent sensing materials with specific functions. In this study, a fluorescence properties and nitrite detection ability designed by precisely modulating benzothiazole sites. Only bond at ortho-position aniline moiety can specifically recognize nitrite, which ensures that reaction products displays robust green emission. unique 2-(2-amino-4-carboxyphenyl) (ortho-BT) shows superior performance, including low limit (2.2 fg), rapid time (<5 s), excellent specificity even presence >40 types strong redox active, colored substances, nitro compounds, metal ions. Moreover, highly applicable for on-site semiquantitative measurement nitrite. proposed strategy expected to start new frontier exploration methodology.

Language: Английский

Citations

71
Advances and challenges of cellulose functional materials in sensors DOI Creative Commons
Hongwei Ma,

Zhiyong Cheng,

Xiaobai Li

et al.

Journal of Bioresources and Bioproducts, Journal Year: 2022, Volume and Issue: 8(1), P. 15 - 32

Published: Nov. 10, 2022

As the most abundant natural polymer material on earth, cellulose is a promising sustainable sensing due to its high mechanical strength, excellent biocompatibility, good degradation, and regeneration ability. Considering inherent advantages of success modern sensors, applying sensors has always been subject considerable investigation, significant progress made in recent decades. Herein, we reviewed research functional materials (CFMs) years. According different sources cellulose, classification preparation methods for design functionalization were summarized with emphasis relationship between their structure properties. Besides, applications advanced based CFMs years also discussed. Finally, potential challenges prospects development sensor outlined.

Language: Английский

Citations

66
Electronic Tuning in Reaction‐Based Fluorescent Sensing for Instantaneous and Ultrasensitive Visualization of Ethylenediamine DOI

Yulei Ke,

Yuan Liu, Baiyi Zu

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(29)

Published: April 1, 2022

Manipulation of a multi-physical quantity to steer molecular photophysical property is great significance in improving sensing performance. Here, an investigation on how physical rooted the structure induces optical behavior change facilitate ultrasensitive detection ethylenediamine (EDA) performed by varying set thiols. The model molecule consisting thiol with dual-carboxyl exhibits strongest fluorescence, which ascribed electron-donating ability and prompted larger orbital overlap oscillator strength. elevated fluorescence positively corelated increased EDA, endowing response nanomolar-liquid/ppm-vapor. A gas detector superior performance fulfills contactless real-time management EDA. We envisage this electron-tuning strategy-enabled enhancement can offer in-depth insight advancing molecule-customized design, further paving way widening applications.

Language: Английский

Citations

64
Humidity-Independent Artificial Olfactory Array Enabled by Hydrophobic Core–Shell Dye/MOFs@COFs Composites for Plant Disease Diagnosis DOI
Xiao Wang, Yixian Wang, Hao Qi

et al.

ACS Nano, Journal Year: 2022, Volume and Issue: 16(9), P. 14297 - 14307

Published: Aug. 31, 2022

As a class of important artificial olfactory system, the colorimetric sensor array possesses great potential for commercialization due to its cost-effectiveness and portability. However, when applied practical applications, humidity interference from ambient environment dissatisfactory sensitivity trace target VOCs are largely unsolved problems. To overcome problems, we developed series dye/MOFs@COFs gas-sensing materials with core-shell structure using hydrophobization strategy by encapsulation dye/metal-organic frameworks (MOFs) into hydrophobic covalent organic (COFs). Benefiting property COF shell, composites were endowed excellent humidity-resistance even under 100% relative (RH). Moreover, uniform distribution dyes on porous MOFs, sensors also exhibited improved at sub-ppm level, compared conventional dye sensors. On basis sensitivity, an based was proven be successful application in early accurate detection wheat scab (1 day after inoculation) monitoring released VOC markers. The synthetic is applicable wide range arrays, endowing them feasibility applications.

Language: Английский

Citations

54