1
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Li Z, Xu W, Song K, Zhang J, Liu Q, El-Bahy ZM, Melhi S, Qiu H, Amin MA, Ye X, Li J, Shao Z, Guo Z. Cellulose nanofibers-based composite film with broadening MXene layer spacing and rapid moisture separation for humidity sensing and humidity actuators. Int J Biol Macromol 2024; 278:134383. [PMID: 39098695 DOI: 10.1016/j.ijbiomac.2024.134383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/28/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
Based on the basic idea of expanding the interlayer spacing of MXene, utilizing the effect of gallic acid-modified cellulose nanofibers for rapid moisture separation, the flexible sensing and driving composite film with a perfect balance among humidity signal response and mechanical properties was prepared. Inspired by the stacking of autumn fallen leaves, the cellulose nanofibers-based composite films were formed by self-assembly under vacuum filtration of blending gallic acid-modified cellulose nanofibers with MXene. The enhanced mechanical properties (tensile strength 131.1 MPa, puncture load 0.88 N, tearing strength 165.55 N/mm, and elongation at break 16.14 %), humidity sensing (the stable induced voltage 63.7 mV and response/recovery time 3.2/5.1 s), and humidity driving (154.7° bending angle) properties were observed. The synergistic effect of hydrogen bonds, the "pinning effect" arising from the side chains, and the hierarchical layered microstructure contributed to the enhanced performance. This work exemplifies the application of green natural product for preparing intelligent sensing, wearable devices, and biomimetic robots.
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Affiliation(s)
- Zhimao Li
- Engineering Research Center of Cellulose and Its Derivatives, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Wenjing Xu
- Engineering Research Center of Cellulose and Its Derivatives, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Kaixu Song
- Engineering Research Center of Cellulose and Its Derivatives, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jing Zhang
- Department of Mechanical and Construction Engineering, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK; College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China
| | - Qi Liu
- School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
| | - Zeinhom M El-Bahy
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt
| | - Saad Melhi
- Department of Chemistry, College of Science, University of Bisha, Bisha 61922, Saudi Arabia
| | - Hua Qiu
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Mohammed A Amin
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Xinming Ye
- School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
| | - Jie Li
- School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
| | - Ziqiang Shao
- Engineering Research Center of Cellulose and Its Derivatives, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
| | - Zhanhu Guo
- Department of Mechanical and Construction Engineering, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK.
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2
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Lu Q, Sun Y, Wu M, Wang Q, Feng S, Fang T, Hu G, Huang W, Li Z, Kong D, Wang X, Lu YQ. Multifunctional Nanocomposite Yield-Stress Fluids for Printable and Stretchable Electronics. ACS NANO 2024; 18:13049-13060. [PMID: 38723037 DOI: 10.1021/acsnano.4c01668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Compliant materials are crucial for stretchable electronics. Stretchable solids and gels have limitations in deformability and durability, whereas active liquids struggle to create complex devices. This study presents multifunctional yield-stress fluids as printable ink materials to construct stretchable electronic devices. Ionic nanocomposites comprise silica nanoparticles and ion liquids, while electrical nanocomposites use the natural oxidation of liquid metals to produce gallium oxide nanoflake additives. These nanocomposite inks can be printed on an elastomer substrate and stay in a solid state for easy encapsulation. However, their transition into a liquid state during stretching allows ultrahigh deformability up to the fracture strain of the elastomer. The ionic inks produce strain sensors with high stretchability and temperature sensors with high sensitivity of 7% °C-1. Smart gloves are further created by integrating these sensors with printed electrical interconnects, demonstrating bimodal detection of temperatures and hand gestures. The nanocomposite yield-stress fluids combine the desirable qualities of solids and liquids for stretchable devices and systems.
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Affiliation(s)
- Qianying Lu
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Yuping Sun
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Ming Wu
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qian Wang
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Shuxuan Feng
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Ting Fang
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Gaohua Hu
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Weixi Huang
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Zhe Li
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Desheng Kong
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210023, China
| | - Xiaoliang Wang
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yan-Qing Lu
- College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructure, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Key Laboratory of Intelligent Optical Sensing and Manipulation, Nanjing University, Nanjing 210093, China
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3
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Zhu X, Ding Y, Li S, Jiang Y, Chen Y. Electroenzymatic cascade reaction on a biohybrid boosts the chiral epoxidation reaction. Sci Bull (Beijing) 2024; 69:483-491. [PMID: 38123433 DOI: 10.1016/j.scib.2023.12.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/11/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
The chiral epoxidation of styrene and its derivatives is an important transformation that has attracted considerable scientific interest in the chemical industry. Herein, we integrate enzymatic catalysis and electrocatalysis to propose a new route for the chiral epoxidation of styrene and its derivatives. Chloroperoxidase (CPO) functionalized with 1-ethyl-3-methylimidazolium bromide (ILEMB) was loaded onto cobalt nitrogen-doped carbon nanotubes (CoN@CNT) to form a biohybrid (CPO-ILEMB/CoN@CNT). H2O2 species were generated in situ through a two-electron oxygen reduction reaction (2e-ORR) at CoN@CNT to initiate the following enzymatic epoxidation of styrene by CPO. CoN@CNT had high electroactivity for the ORR to produce H2O2 at a more positive potential, prohibiting the conversion of FeIII to FeII in the heme of CPO to maintain enzymatic activity. Meanwhile, CoN@CNT could serve as an ideal carrier for the immobilization of CPO-ILEMB. Hence, the coimmobilization of CPO-ILEMB and CoN@CNT could facilitate the diffusion of intermediate H2O2, which achieved 17 times higher efficiency than the equivalent amounts of free CPO-ILEMB in bulk solution for styrene epoxidation. Notably, an enhancement (∼45%) of chiral selectivity for the epoxidation of styrene was achieved.
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Affiliation(s)
- Xuefang Zhu
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China
| | - Yu Ding
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Shuni Li
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China
| | - Yucheng Jiang
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China.
| | - Yu Chen
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China.
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4
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Lu C, Wang X, Jia Q, Xu S, Wang C, Du S, Wang J, Yong Q, Chu F. 3D printed mechanical robust cellulose derived liquid-free ionic conductive elastomer for multifunctional electronic devices. Carbohydr Polym 2024; 324:121496. [PMID: 37985087 DOI: 10.1016/j.carbpol.2023.121496] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/29/2023] [Accepted: 10/13/2023] [Indexed: 11/22/2023]
Abstract
Ionic gel-based wearable electronic devices with robust sensing performance have gained extensive attention. However, the development of mechanical robustness, high conductivity, and customizable bio-based ionic gel for multifunctional wearable sensors still is a challenge. Herein, we first report the preparation of 3D printed cellulose derived ionic conductive elastomers (ICEs) with high mechanical toughness, high conductivity, and excellent environment stability through one-step photo-polymerization of polymerizable deep eutectic solvents. In the ICEs, carboxylate cellulose nanocrystals (C-CNCs) were used as a bio-template for the in-situ polymerization of the aniline to avoid the aggregation of polyaniline and yield a high conductivity (58.7 mS/m). More importantly, the well-defined structural design combining multiple hydrogen bonds with strong coordination bonds endows the ICEs with extremely high mechanical strength (4.4 MPa), toughness (13.33 MJ*m-3), high elasticity and excellent environment stability. Given by these features, the ICE was utilized to assemble multifunctional strain, humidity, and temperature sensors for real-time and reliable detection the human motions, respiration, and body temperature. This work provides a promising strategy for designing the new generation of strong, tough bio-based ionic gel for multifunctional wearable electronic devices.
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Affiliation(s)
- Chuanwei Lu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No 16, Suojin Wucun, Nanjing 210042, China
| | - Xinyu Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Qianqian Jia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Shijian Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Chunpeng Wang
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No 16, Suojin Wucun, Nanjing 210042, China
| | - Shuo Du
- Key Lab of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jifu Wang
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No 16, Suojin Wucun, Nanjing 210042, China.
| | - Qiang Yong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Fuxiang Chu
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No 16, Suojin Wucun, Nanjing 210042, China.
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5
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Cedeño Mata M, Orpella A, Dominguez-Pumar M, Bermejo S. Boosting the Sensitivity and Hysteresis of a Gel Polymer Electrolyte by Embedding SiO 2 Nanoparticles and PVP for Humidity Applications. Gels 2024; 10:50. [PMID: 38247773 PMCID: PMC10815479 DOI: 10.3390/gels10010050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/20/2023] [Accepted: 12/26/2023] [Indexed: 01/23/2024] Open
Abstract
Enhancing sensitivity and hysteresis in capacitance humidity sensors is vital for precise, reliable, and consistent humidity control. This study explores this concern by incorporating polyvinylpyrrolidone (PVP) and SiO2 nanoparticles into a polyvinyl alcohol (PVA)-based ionic liquid gel polymer electrolyte (ILGPE), studying two capacitor types: ILGPE and SiO2 composite ILGPE (CILGPE) capacitors. These novel electrolytes use ammonium acetate as a plasticiser, 1-butyl-3-methylimidazolium bromide as an ionic liquid, SiO2 nanoparticles as a composite, and PVA and PVP as host polymers. Capacitors were characterised and modelled using impedance spectroscopy (IS), providing an electrophysical insight into their working principle. Sensitivity and hysteresis were evaluated within a 20-90% relative humidity (RH) range at 25 °C. The SiO2 CILGPE capacitor with PVP presented superior sensitivity and hysteresis, revealing the beneficial combination of SiO2 nanoparticles and PVP. These benefits are due to the creation of pathways that facilitate water molecule diffusion and crystallinity reduction in PVA-ILGPE. In particular, at 10 kHz, it demonstrates a calibrated capacitance sensitivity of 2660 pF/%RH and a hysteresis of 3.28 %RH. This optimised capacitor outperforms some previous humidity capacitive sensors in sensitivity while exhibiting low hysteresis.
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Affiliation(s)
- Michelle Cedeño Mata
- MNT Group, Electronic Engineering Department, Polytechnic University of Catalonia (UPC), C/Jordi Girona 1-3, 08034 Barcelona, Spain
| | | | | | - Sandra Bermejo
- MNT Group, Electronic Engineering Department, Polytechnic University of Catalonia (UPC), C/Jordi Girona 1-3, 08034 Barcelona, Spain
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6
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Oliveira AR, Ramou E, Palma SICJ, Esteves C, Barbosa A, Roque ACA. Impact of the Cationic Moiety of Ionic Liquids on Chemoselective Artificial Olfaction. ACS MATERIALS AU 2023; 3:678-686. [PMID: 38089656 PMCID: PMC10636774 DOI: 10.1021/acsmaterialsau.3c00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 10/13/2024]
Abstract
Ionogels and derived materials are assemblies of polymers and ionic liquids characterized by high stability and ionic conductivity, making them interesting choices as gas sensors. In this work, we assessed the effect of the ionic liquid moiety to generate ionogels and hybrid gels as electrical and optical gas sensors. Six ionic liquids consisting of a constant anion (chloride) and distinct cationic head groups were used to generate ionogels and hybrid gels and further tested as gas sensors in customized electronic nose devices. In general, ionogel-based sensors yielded higher classification accuracies of standard volatile organic compounds when compared to hybrid material-based sensors. In addition, the high chemical diversity of ionic liquids is further translated to a high functional diversity in analyte molecular recognition and sensing.
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Affiliation(s)
- Ana Rita Oliveira
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- Applied
Molecular Biosciences Unit, Department of Chemistry, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Efthymia Ramou
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- Applied
Molecular Biosciences Unit, Department of Chemistry, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Susana I. C. J. Palma
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- Applied
Molecular Biosciences Unit, Department of Chemistry, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Carina Esteves
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- Applied
Molecular Biosciences Unit, Department of Chemistry, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Arménio Barbosa
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- Applied
Molecular Biosciences Unit, Department of Chemistry, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Ana Cecília Afonso Roque
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- Applied
Molecular Biosciences Unit, Department of Chemistry, School of Science
and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
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7
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Zhu X, Xiao L, Ding Y, Zhang J, Jiang Y. The chloroperoxidase immobilized on porous carbon nanobowls for the detection of trichloroacetic acid by electroenzymatic synergistic catalysis. ENVIRONMENTAL RESEARCH 2023; 234:116590. [PMID: 37423369 DOI: 10.1016/j.envres.2023.116590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/29/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
Trichloroacetic acid (TCA), as a by-product of chlorination disinfection, is a highly carcinogenic chemical. Due to the widespread use of chlorination disinfection, it is critical to detect TCA in drinking water to decrease the incidence of disease. In this work, we developed an efficient TCA biosensor via electroenzymatic synergistic catalysis. The porous carbon nanobowls (PCNB) are prepared and wrapped by an amyloid like proteins formed by phase-transitioned lysozyme (PTL-PCNB), then, chloroperoxidase (CPO) is abounding to PTL-PCNB owing to its strong adhesion. The ionic liquid of 1-ethyl-3-methylimidazolium bromide (ILEMB) is co-immobilized on PTL-PCNB to from CPO-ILEMB@PTL-PCNB nanocomposite to assist the direct electron transfer (DET) of CPO. The PCNB plays two roles here. In addition, to increasing the conductivity, it serves as an ideal support for holding CPO; The CPO-ILEMB@PTL-PCNB nanocomposite modified electrode presents high efficiency for sensing TCA. Through electroenzymatic synergistic catalysis, a wide detection range of 33 μmol L-1 to 98 mmol L-1 can be achieved with a low detection limit of 5.9 μmol L-1, and high stability, selectivity as well as reproducibility, which ensures its potential practical applicability. This work provides a new platform for the electro-enzyme synergistic catalysis in one pot.
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Affiliation(s)
- Xuefang Zhu
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710119, PR China.
| | - Ling Xiao
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710119, PR China.
| | - Yu Ding
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, PR China.
| | - Jing Zhang
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710119, PR China.
| | - Yucheng Jiang
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an, 710119, PR China.
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8
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Huang X, Li Y, Witherspoon E, He R, Petruncio G, Paige M, Li M, Liu T, Amine K, Wang Z, Li Q, Dong P. Species-Selective Detection of Volatile Organic Compounds by Ionic Liquid-Based Electrolyte Using Electrochemical Methods. ACS Sens 2023; 8:3389-3399. [PMID: 37589910 DOI: 10.1021/acssensors.3c00578] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
The detection of volatile organic compounds (VOCs) is an important topic for environmental safety and public health. However, the current commercial VOC detectors suffer from cross-sensitivity and low reproducibility. In this work, we present species-selective detection for VOCs using an electrochemical cell based on ionic liquid (IL) electrolytes with features of high selectivity and reliability. The voltammograms measured with the IL-based electrolyte absorbing different VOCs exhibited species-selective features that were extracted and classified by linear discriminant analysis (LDA). The detection system could identify as many as four types of VOCs, including methanol, ethanol, acetone, formaldehyde, and additional water. A mixture of methanol and formaldehyde was detected as well. The sample required for the VOCs classification system was 50 μL, or 1.164 mmol, on average. The response time for each VOC measurement is as fast as 24 s. The volume of VOCs such as formaldehyde in solution could also be quantified by LDA and electrochemical impedance spectroscopy techniques, respectively. The system showed a tunable detection range for 1.6 and 16% (w/v) CH2O solution by adjusting the composition of the electrolyte. The limit of detection was as low as 1 μL. For the 1.6% CH2O solution, the linearity calibration range was determined to be from 5.30 to 53.00 μmol with a limit of detection at 0.53 μmol. The mechanisms for VOCs determination and quantification are also thoroughly discussed. It is expected that this work could provide a new insight into the concept of electrochemical detection of VOCs with machine learning analysis and be applied to both VOCs gas monitoring and fluid detection.
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Affiliation(s)
- Xiaozhou Huang
- Department of Mechanical Engineering, George Mason University, Fairfax, Virginia 22030 United States
- Department of Chemistry & Biochemistry, George Mason University, Manassas, Virginia 20110, United States
| | - Yaonian Li
- Department of Electrical and Computer Engineering, George Mason University, Fairfax, Virginia 22030 United States
| | - Erin Witherspoon
- Department of Chemistry, Oakland University, Rochester Hills, Michigan 48309 United States
| | - Rui He
- Department of Mechanical Engineering, George Mason University, Fairfax, Virginia 22030 United States
| | - Greg Petruncio
- Department of Chemistry & Biochemistry, George Mason University, Manassas, Virginia 20110, United States
| | - Mikell Paige
- Department of Chemistry & Biochemistry, George Mason University, Manassas, Virginia 20110, United States
| | - Matthew Li
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Tongchao Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Khalil Amine
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), Dammam 34221, Saudi Arabia
| | - Zhe Wang
- Department of Chemistry, Oakland University, Rochester Hills, Michigan 48309 United States
| | - Qiliang Li
- Department of Electrical and Computer Engineering, George Mason University, Fairfax, Virginia 22030 United States
| | - Pei Dong
- Department of Mechanical Engineering, George Mason University, Fairfax, Virginia 22030 United States
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9
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Li X, Sun F. An Ultrastretchable Gradient Ionogel Induced by a Self-Floating Strategy for Strain Sensing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:37717-37727. [PMID: 37523492 DOI: 10.1021/acsami.3c06894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The fabrication of gradient ionogels for flexible strain sensors remains challenging because of the complex preparation procedures, and it is still difficult to prepare highly stretchable ionogels (strain > 10000%). In this study, a strategy is proposed to successfully fabricate gradient ionogels and apply them to flexible strain sensors by utilizing the self-floating character of the polysiloxane cross-linker. A gradient ionogel with ultrahigh stretchability (>14000%) is prepared via a one-step in situ photopolymerization process of the precursor with long-chain poly(dimethylsiloxane) bis(2-methyl acrylate) (PDMSMA). PDMSMA, which has a self-floating ability and excellent flexibility, induces a gradient composition distribution in the ionogel, thereby endowing the ionogel with superior stretchability and gradient changes in conductivity and adhesivity from the top to the bottom layer. Because of multiple molecular interactions, the bottom surface of the ionogel possesses good resilience and self-adhesion, whereas the top surface, which has a high PDMSMA content, shows a nonsticky performance. As a result, a singular gradient ionogel having both a sticky bottom surface and a nonsticky top surface is achieved. Furthermore, the flexible strain sensor that is created based on these gradient ionogels exhibits high sensitivity (its gauge factor reaching 5.08), a wide detection range (1-1500%), fast response times, and good linearity. Notably, the detection signal remains repeatable over 1000 uninterrupted strain cycles. The fabricated strain sensor was further utilized to monitor joint movements and physiological signals. This work provides a facile strategy for fabricating gradient ionogels and shows their application potential in the field of flexible electronics.
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Affiliation(s)
- Xuechun Li
- College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Fang Sun
- College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
- Anqing Research Institute, Beijing University of Chemical Technology, Anqing 246000, People's Republic of China
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10
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Zhang M, Arunachalam A, Perrin H, Polat S, Groenewold J, Mendes E, Eral HB. An Edible Humidity Indicator That Responds to Changes in Humidity Mechanically. ACS APPLIED POLYMER MATERIALS 2023; 5:4780-4788. [PMID: 37469883 PMCID: PMC10353009 DOI: 10.1021/acsapm.3c00344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/24/2023] [Indexed: 07/21/2023]
Abstract
Elevated humidity levels in medical, food, and pharmaceutical products may reduce the products' shelf life, trigger bacterial growth, and even lead to complete spoilage. In this study, we report a humidity indicator that mechanically bends and rolls itself irreversibly upon exposure to high humidity conditions. The indicator is made of two food-grade polymer films with distinct ratios of a milk protein, casein, and a plasticizer, glycerol, that are physically attached to each other. Based on the thermogravimetric analysis and microstructural characterization, we hypothesize that the bending mechanism is a result of hygroscopic swelling and consequent counter diffusion of water and glycerol. Guided by this mechanism, we demonstrate that the rolling behavior, including response time and final curvature, can be tuned by the geometric dimensions of the indicator. As the proposed indicator is made of food-grade ingredients, it can be placed directly in contact with perishable products to report exposure to undesirable humidity inside the package, without the risk of contaminating the product or causing oral toxicity in case of accidental digestion, features that commercial inedible electronic and chemo-chromatic sensors cannot provide presently.
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Affiliation(s)
- Mengmeng Zhang
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Abinaya Arunachalam
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
- Polymer
Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Hugo Perrin
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
| | - Sevgi Polat
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
- Chemical
Engineering Department, Faculty of Engineering, Marmara University, 34854 İstanbul, Turkey
| | - Jan Groenewold
- Van’t
Hoff Laboratory, Physical Chemistry, University
of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands
- Guangdong
Provincial Key Laboratory of Optical Information Materials and Technology,
Institute of Electronic Paper Displays South China Academy of Advanced
Optoelectronics, South China Normal University, Guangzhou 510006, P. R. China
| | - Eduardo Mendes
- Chemical
Engineering, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, Delft, South Holland 2629 HZ, The Netherlands
| | - Hüseyin Burak Eral
- Process
& Energy Department, Delft University
of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands
- Van’t
Hoff Laboratory, Physical Chemistry, University
of Utrecht, Padualaan
8, 3584 CH Utrecht, The Netherlands
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11
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Honaker LW, Schaap J, Kenbeek D, Miltenburg E, Deshpande S. Heads or tails: investigating the effects of amphiphile features on the distortion of chiral nematic liquid crystal droplets. JOURNAL OF MATERIALS CHEMISTRY. C 2023; 11:4867-4875. [PMID: 37033204 PMCID: PMC10077502 DOI: 10.1039/d2tc05390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 03/22/2023] [Indexed: 06/19/2023]
Abstract
Liquid crystal-based sensing has fast become a growing field, harnessing the sensitivity of liquid crystals to their surroundings to provide information about the analytes present, including surface-active amphiphiles such as biological lipids. Amphiphiles can impart ordering to a liquid crystal and, in the case of chiral nematic liquid crystals (CLCs), distort the helical texture. The cause and degree to which this distortion occurs is not fully clear. In this work, the effects of different amphiphiles on the final colour textures as well as the pitch of chiral nematic liquid crystals are investigated. We find that the tails of amphiphiles and their orientation play a more important role in determining the final distortions of the liquid crystal by the direct interactions they have with the host, whereas the headgroups do not play a significant role in affecting these distortions. Our findings may find implications in designing CLC-based biosensors, where the tails will likely have more impact on the CLC response, while the headgroups will remain available for further functionalization without having significant effects on the signal readout.
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Affiliation(s)
- Lawrence W Honaker
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research 6708 WE Wageningen The Netherlands +31 (0)317 480 419
| | - Jorik Schaap
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research 6708 WE Wageningen The Netherlands +31 (0)317 480 419
| | - Dennis Kenbeek
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research 6708 WE Wageningen The Netherlands +31 (0)317 480 419
| | - Ernst Miltenburg
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research 6708 WE Wageningen The Netherlands +31 (0)317 480 419
| | - Siddharth Deshpande
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research 6708 WE Wageningen The Netherlands +31 (0)317 480 419
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12
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Oliveira AR, Costa HMA, Ramou E, Palma SICJ, Roque ACA. Effect of Polymer Hydrophobicity in the Performance of Hybrid Gel Gas Sensors for E-Noses. SENSORS (BASEL, SWITZERLAND) 2023; 23:3531. [PMID: 37050591 PMCID: PMC10098550 DOI: 10.3390/s23073531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
Relative humidity (RH) is a common interferent in chemical gas sensors, influencing their baselines and sensitivity, which can limit the performance of e-nose systems. Tuning the composition of the sensing materials is a possible strategy to control the impact of RH in gas sensors. Hybrid gel materials used as gas sensors contain self-assembled droplets of ionic liquid and liquid crystal molecules encapsulated in a polymeric matrix. In this work, we assessed the effect of the matrix hydrophobic properties in the performance of hybrid gel materials for VOC sensing in humid conditions (50% RH). We used two different polymers, the hydrophobic PDMS and the hydrophilic bovine gelatin, as polymeric matrices in hybrid gel materials containing imidazolium-based ionic liquids, [BMIM][Cl] and [BMIM][DCA], and the thermotropic liquid crystal 5CB. Better accuracy of VOC prediction is obtained for the hybrid gels composed of a PDMS matrix combined with the [BMIM][Cl] ionic liquid, and the use of this hydrophobic matrix reduces the effect of humidity on the sensing performance when compared to the gelatin counterpart. VOCs interact with all the moieties of the hybrid gel multicomponent system; thus, VOC correct classification depends not only on the polymeric matrix used, but also on the IL selected, which seems to be key to achieve VOCs discrimination at 50% RH. Thus, hybrid gels' tunable formulation offers the potential for designing complementary sensors for e-nose systems operable under different RH conditions.
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Affiliation(s)
- Ana Rita Oliveira
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Henrique M. A. Costa
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Efthymia Ramou
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Susana I. C. J. Palma
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Ana Cecília A. Roque
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
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13
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Ramou E, Palma SICJ, Roque ACA. A room temperature 9CB‐based chemical sensor. NANO SELECT 2023. [DOI: 10.1002/nano.202200153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Affiliation(s)
- Efthymia Ramou
- UCIBIO – Applied Molecular Biosciences Unit Department of Chemistry School of Science and Technology NOVA University Lisbon Caparica Portugal
- Associate Laboratory i4HB – Institute for Health and Bioeconomy School of Science and Technology NOVA University Lisbon Caparica Portugal
| | - Susana I. C. J. Palma
- UCIBIO – Applied Molecular Biosciences Unit Department of Chemistry School of Science and Technology NOVA University Lisbon Caparica Portugal
- Associate Laboratory i4HB – Institute for Health and Bioeconomy School of Science and Technology NOVA University Lisbon Caparica Portugal
| | - Ana Cecília A. Roque
- UCIBIO – Applied Molecular Biosciences Unit Department of Chemistry School of Science and Technology NOVA University Lisbon Caparica Portugal
- Associate Laboratory i4HB – Institute for Health and Bioeconomy School of Science and Technology NOVA University Lisbon Caparica Portugal
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14
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Kasoju N, Remya NS, Sasi R, Sujesh S, Soman B, Kesavadas C, Muraleedharan CV, Varma PRH, Behari S. Digital health: trends, opportunities and challenges in medical devices, pharma and bio-technology. CSI TRANSACTIONS ON ICT 2023; 11:11-30. [PMCID: PMC10089382 DOI: 10.1007/s40012-023-00380-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 03/27/2023] [Indexed: 04/12/2024]
Abstract
Digital health interventions refer to the use of digital technology and connected devices to improve health outcomes and healthcare delivery. This includes telemedicine, electronic health records, wearable devices, mobile health applications, and other forms of digital health technology. To this end, several research and developmental activities in various fields are gaining momentum. For instance, in the medical devices sector, several smart biomedical materials and medical devices that are digitally enabled are rapidly being developed and introduced into clinical settings. In the pharma and allied sectors, digital health-focused technologies are widely being used through various stages of drug development, viz. computer-aided drug design, computational modeling for predictive toxicology, and big data analytics for clinical trial management. In the biotechnology and bioengineering fields, investigations are rapidly growing focus on digital health, such as omics biology, synthetic biology, systems biology, big data and personalized medicine. Though digital health-focused innovations are expanding the horizons of health in diverse ways, here the development in the fields of medical devices, pharmaceutical technologies and biotech sectors, with emphasis on trends, opportunities and challenges are reviewed. A perspective on the use of digital health in the Indian context is also included.
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Affiliation(s)
- Naresh Kasoju
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - N. S. Remya
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - Renjith Sasi
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - S. Sujesh
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - Biju Soman
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - C. Kesavadas
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - C. V. Muraleedharan
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - P. R. Harikrishna Varma
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
| | - Sanjay Behari
- Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, 695011 Kerala India
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15
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Wang J, Cao Q, Cheng XF, Ye W, He JH, Lu JM. Moisture-Insensitive and Highly Selective Detection of NO 2 by Ion-in-Conjugation Covalent Organic Frameworks. ACS Sens 2022; 7:3782-3789. [PMID: 36384296 DOI: 10.1021/acssensors.2c01631] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
As a common toxic gas, nitrogen dioxide (NO2) seriously threatens the environment and human respiratory system even at part per billion (ppb) level. Covalent organic frameworks (COFs) have gained widespread attention in sensing applications because of the benefits of designability, environmental stability, and a large number of active sites. However, the competitive adsorption of water molecules and the target gas molecules at room temperature as well as the weak interaction between COFs and gas molecules hinder their practical applications. Here, we introduce ion-in-conjugation (IIC) into a covalent organic framework (COF) by preparing a condensate of squaraine (SA) with 1,3,5-tris(4-aminophenyl)benzene (TAPB) to form a mesoporous macrocyclic material (SA-TAPB). Layers of SA-TAPB, drop cast onto interdigitated Ag-Pd alloy electrodes, show a statistically significant conductivity response to NO2 at concentrations as low as 30 ppb and a theoretical detection limit of 10.9 ppb. The sensor displays a lower sensitivity to variations in humidity when operated at 80 °C compared to room temperature. The density functional theory (DFT) calculations indicated that the main adsorption site of NO2 is dual hydrogen bonds formed between two amide hydrogen atoms of SA-TAPB and the NO2 molecule. Gas adsorption experiments revealed that SA-TAPB has the largest adsorption capacity of NO2 versus other interference gases, which were responsible for the excellent selectivity toward NO2.
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Affiliation(s)
- Jia Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Mate-Rials, Soochow University, Suzhou215123, P. R. China
| | - Qiang Cao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Mate-Rials, Soochow University, Suzhou215123, P. R. China
| | - Xue-Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Mate-Rials, Soochow University, Suzhou215123, P. R. China
| | - Wen Ye
- Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou215123, P. R. China
| | - Jing-Hui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Mate-Rials, Soochow University, Suzhou215123, P. R. China
| | - Jian-Mei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, National United Engineering Laboratory of Functionalized Environmental Adsorption Mate-Rials, Soochow University, Suzhou215123, P. R. China
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16
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Zhang T, Ren W, Xiao F, Li J, Zu B, Dou X. Engineered olfactory system for in vitro artificial nose. ENGINEERED REGENERATION 2022. [DOI: 10.1016/j.engreg.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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17
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Song M, Liu X, Yue H, Li S, Guo J. 4D printing of PLA/PCL-based bio-polyurethane via moderate cross-linking to adjust the microphase separation. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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18
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Materials for Chemical Sensing: A Comprehensive Review on the Recent Advances and Outlook Using Ionic Liquids, Metal–Organic Frameworks (MOFs), and MOF-Based Composites. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10080290] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The ability to measure and monitor the concentration of specific chemical and/or gaseous species (i.e., “analytes”) is the main requirement in many fields, including industrial processes, medical applications, and workplace safety management. As a consequence, several kinds of sensors have been developed in the modern era according to some practical guidelines that regard the characteristics of the active (sensing) materials on which the sensor devices are based. These characteristics include the cost-effectiveness of the materials’ manufacturing, the sensitivity to analytes, the material stability, and the possibility of exploiting them for low-cost and portable devices. Consequently, many gas sensors employ well-defined transduction methods, the most popular being the oxidation (or reduction) of the analyte in an electrochemical reactor, optical techniques, and chemiresistive responses to gas adsorption. In recent years, many of the efforts devoted to improving these methods have been directed towards the use of certain classes of specific materials. In particular, ionic liquids have been employed as electrolytes of exceptional properties for the preparation of amperometric gas sensors, while metal–organic frameworks (MOFs) are used as highly porous and reactive materials which can be employed, in pure form or as a component of MOF-based functional composites, as active materials of chemiresistive or optical sensors. Here, we report on the most recent developments relative to the use of these classes of materials in chemical sensing. We discuss the main features of these materials and the reasons why they are considered interesting in the field of chemical sensors. Subsequently, we review some of the technological and scientific results published in the span of the last six years that we consider among the most interesting and useful ones for expanding the awareness on future trends in chemical sensing. Finally, we discuss the prospects for the use of these materials and the factors involved in their possible use for new generations of sensor devices.
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19
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Moreira IP, Esteves C, Palma SI, Ramou E, Carvalho AL, Roque AC. Synergy between silk fibroin and ionic liquids for active gas-sensing materials. Mater Today Bio 2022; 15:100290. [PMID: 35620795 PMCID: PMC9127357 DOI: 10.1016/j.mtbio.2022.100290] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 11/03/2022] Open
Abstract
Silk fibroin is a biobased material with excellent biocompatibility and mechanical properties, but its use in bioelectronics is hampered by the difficult dissolution and low intrinsic conductivity. Some ionic liquids are known to dissolve fibroin but removed after fibroin processing. However, ionic liquids and fibroin can cooperatively give rise to functional materials, and there are untapped opportunities in this combination. The dissolution of fibroin, followed by gelation, in designer ionic liquids from the imidazolium chloride family with varied alkyl chain lengths (2-10 carbons) is shown here. The alkyl chain length of the anion has a large impact on fibroin secondary structure which adopts unconventional arrangements, yielding robust gels with distinct hierarchical organization. Furthermore, and due to their remarkable air-stability and ionic conductivity, fibroin ionogels are exploited as active electrical gas sensors in an electronic nose revealing the unravelled possibilities of fibroin in soft and flexible electronics.
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Affiliation(s)
- Inês P. Moreira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
| | - Carina Esteves
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
| | - Susana I.C.J. Palma
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
| | - Efthymia Ramou
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
| | - Ana L.M. Carvalho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
| | - Ana C.A. Roque
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal
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