Article
Chemistry, Applied
Eun Jeong, Joong-Kwon Kim, Jungho Jin, Hyung-il Lee
Summary: A transparent cellulose nanofiber film was used for the colorimetric detection of a nerve agent mimic in the vapor phase. The film showed selective detection behavior and maintained its transparency during the detection process. It is a biodegradable sensor that can be disposed of after use.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Applied
Seungjoo Baek, Mohammed Iqbal Khazi, Jong-Man Kim
Summary: Chemical sensors based on stimulus-responsive chromogenic materials are important for their ability to manipulate optical properties and display vivid colors. In this study, a chromogenic poly-diacetylene (PDA) was generated through polymerization of protonated supramolecular assemblies of a diacetylene precursor. The PDA exhibited a blue color and showed a sensory response to ammonia, transitioning from blue to red and emitting fluorescence upon deprotonation. The self-assembly behavior, topochemical polymerization, and ammonia sensing properties were investigated using spectroscopic methods.
Article
Chemistry, Analytical
M. A. Vargas-Munoz, Julian Morales, Victor Cerda, Laura Ferrer, Edwin Palacio
Summary: A simple and low-cost field-deployable method using paper sensors combined with a 3D-printed portable platform has been developed for simultaneous determination of ammonia and sulfide. The method showed good precision and recovery rates when applied to anaerobic digester and wastewater samples. The advantages of this methodology include high precision, simple paper sensor preparation, and a reusable system.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Mirim Ham, Soohyun Kim, Wonmok Lee, Hyunjung Lee
Summary: With the increase in demand for ready-to-cook foods, ensuring the freshness and safety of these foods has become a concern. This paper presents a printable sensor based on a hydrogel-containing pH indicator for detecting ammonia gas. The sensor, composed of biocompatible polymers, demonstrated visible color change as a function of ammonia concentration during food spoilage. By adding polyacrylonitrile to improve transport speed of ammonium ions, the sensor showed reproducibility and selectivity in detecting various gases during the food spoilage process.
Article
Engineering, Electrical & Electronic
Samaneh Esmaeili, Mohammad Ali Zanjanchi, Hossein Golmojdeh, Shahab Shariati
Summary: Uniform micro-sized silica spheres coated with mesoporous shells were prepared using a sol-gel method, loaded with sensitive dyes to create a solid-state colorimetric gas sensor for ammonia detection. The sensor array showed an instantaneous response to low concentrations of ammonia gas and was able to detect a wide range of concentrations from 10 to 1000 ppm, with a detection limit of 0.6 ppm.
IEEE SENSORS JOURNAL
(2021)
Article
Biophysics
Liu Tong, Lina Wu, Yunfeng Zai, Yu Zhang, Enben Su, Ning Gu
Summary: A novel paper-based colorimetric glucose sensor employing PB NPs as mimic peroxidase was developed, which exhibited easy manufacturing process, stable performance, and wide linear range. The sensor has great potential in clinical and community-level medical applications.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Analytical
Jieon Lee, Hee-Kyung Na, Sangwoo Lee, Woo-Keun Kim
Summary: A paper-based miRNA sensor was developed using target-recycled DNAzyme amplification and graphene oxide-assisted Dz blotting, enabling quantification of as low as 7.75 fmol miRNA with high reproducibility. This approach is technologically straightforward and can be used with a portable smartphone for quantification.
Article
Chemistry, Applied
Dilek Ozturk, Ipek Omeroglu, Baybars Koksoy, Cem Gol, Mahmut Durmus
Summary: In this study, two novel BODIPY compounds were synthesized and used to construct colorimetric and fluorometric paper-based pH sensors. The compounds were characterized using various analysis techniques, and their properties and performances were determined. Additionally, a simple and reliable method was developed for detecting pH changes in lemon juice.
Article
Chemistry, Analytical
Maria Maddalena Calabretta, Denise Gregucci, Riccardo Desiderio, Elisa Michelini
Summary: Biogenic amines (BAs), nitrogenous molecules present in various foods, can indicate freshness and food quality as their levels increase during spoilage. Detecting BAs in real time using smart packaging is crucial for ensuring food safety and meeting consumer demands. This study developed a user-friendly colorimetric sensing paper that can visually detect BAs. The paper sensor, using the natural cross-linking agent genipin, was able to produce water-soluble blue pigments when binding with BAs. The sensor was successfully applied to monitoring chicken meat quality and achieved a limit of detection equivalent to 0.1 mM of putrescine through quantitative analysis using a smartphone camera. The sensor's suitability was verified by integrating it into smart packaging and analyzing commercial chicken meat samples stored at different temperatures, with results aligning with the labeled best before date and confirming the sensor's potential as a smart label.
Article
Engineering, Environmental
Xueyan Liu, Zhuo Chen, Rongsheng Gao, Chengyou Kan, Jianhong Xu
Summary: Technological advances have enabled the development of a portable and simplified colorimetric method for Fe3+ sensing using a smartphone as a detector. The study successfully prepared a fluorescent and colorimetric sensor for Fe3+ using rhodamine-grafted cellulose filter paper, and developed a smartphone app for convenient and on-site quantitative detection of Fe3+ in environmental water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Chenglong Liao, Miao Zhang, Nan Gao, Qingyun Tian, Jiangfan Shi, Shuai Chen, Chuanyi Wang, Ling Zang
Summary: A novel colorimetric sensor system was developed for highly sensitive detection of formaldehyde in the gas phase. The sensor utilized paper towel as a substrate coated with hydroxylamine and two pH indicators for detecting formaldehyde. By optimizing the molar ratio of the pH indicators, a dramatic color change can be observed, allowing for quick detection of formaldehyde.
Review
Chemistry, Analytical
Mohammad Amin Rashidi, Rezvan Zendehdel, Shahab Falahi, Soudabeh Ghodsi, Hori Ghaneialvar, Sajad Najafi
Summary: Ammonia has diverse applications but also poses harm to human health and the ecosystem. Colorimetric sensors, particularly those using green synthesized nanoparticles, offer a promising method for ammonia detection and analysis, with advantages such as high accuracy and low power consumption.
MICROCHEMICAL JOURNAL
(2024)
Article
Engineering, Electrical & Electronic
Jingjing Yu, Wei Ding, Laxmi Jaishi, Chenwen Lin, Rachel Boylan, Chinmay Chandrakant Dixit, Buddhi Sagar Lamsal, Wei He, Francis Tsow, Songxin Tan, Yue Zhou, Xiaojun Xian
Summary: Colorimetric gas sensors are widely used in hazardous gas detection, food freshness assessment, and gaseous biomarker identification due to their high sensitivity and selectivity, low cost, and good compatibility. However, their one-time discrete measurement design limits their application in continuous analytes monitoring. In this work, we proposed a novel sensor design to prolong the lifetime of colorimetric gas sensors by controlling the gas diffusion process. We compared two geometries and found that the 2-D gas diffusion geometry demonstrated better sensor performance.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Environmental
Monisha, Kamlesh Shrivas, Tushar Kant, Sanyukta Patel, Rama Devi, Nohar Singh Dahariya, Shamsh Pervez, Manas Kanti Deb, Manish K. Rai, Joyce Rai
Summary: In this study, an inkjet-printed paper-based colorimetric sensor was developed for on-site determination of mercuric ion using a smartphone and color detector app. The sensor showed advantages of simplicity, rapid detection, cost-effectiveness, wide linear range, and low detection limit for determination of Hg2+ at sample sources. The results were validated against inductively coupled plasma-atomic emission spectroscopy (ICP-AES) measurements.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Songtao Liu, Kaixin Wei, Fuqiang Cheng, Yongsheng Li, Min Xue
Summary: In this study, a core-shell mesoporous material MCM-41@SiO2 functionalized with CoCl2 and KSCN was synthesized as an ammonia adsorbent. The material showed high surface area, sphericity, uniform size, dispersibility, and adsorption capability. Furthermore, a glass tube sensor was fabricated using the material for rapid naked-eye detection of ammonia gas, showing good sensing speed, selectivity, accuracy, and reusability. The sensor holds promise for indoor NH3 sensing and other more complicated situations.
Article
Chemistry, Multidisciplinary
Thi Anh Ho, Yeong Beom Cho, Yong Shin Kim
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
Trung Tuyen Bui, Yong Shin Kim, Hyungphil Chun, Duong Duc La, Sheshanath V. Bhosale
Article
Chemistry, Analytical
Anh Tuan Hoang, Yeong Beom Cho, Yong Shin Kim
SENSORS AND ACTUATORS B-CHEMICAL
(2017)
Article
Chemistry, Multidisciplinary
Rahul V. Hangarge, Duong Duc La, Miron Boguslavsky, Lathe A. Jones, Yong Shin Kim, Sheshanath V. Bhosale
Article
Chemistry, Analytical
Yong Shin Kim, Yuanyuan Yang, Charles S. Henry
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Analytical
Muhammad Rashid, Ali Hussain, Muhammad Shoaib, Muhammad Abdul Basit, Hammad Khan, Yong Shin Kim
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2019)
Article
Chemistry, Physical
Nguyen Duc Cuong, Vu Thi Hue, Yong Shin Kim
Article
Chemistry, Multidisciplinary
Duc Cuong Nguyen, Trung Tuyen Bui, Yeong Beom Cho, Yong Shin Kim
Summary: A low-cost oil sorbent was prepared by modifying expanded vermiculite, exhibiting excellent oil/water separation performance and efficient sorption capacity, suitable for oil spill remediation and oil-collecting equipment.
Article
Geochemistry & Geophysics
Duc Cuong Nguyen, Trung Tuyen Bui, Yeong Beom Cho, Yong Shin Kim
Summary: Research shows that two-step expanded eVMT has a higher pore volume compared to conventional thermal methods, significantly improving its liquid uptake performance for hazardous substances. Through physical absorption and capillary action, two-step eVMT successfully mitigates liquid hazards on impermeable surfaces.
Article
Chemistry, Analytical
Duc Cuong Nguyen, Trung Tuyen Bui, Si Hiep Hua, Hyungphil Chun, Yong Shin Kim
Summary: Durable bilayer-type actuators driven by airborne moisture were fabricated using natural bentonite nanoclay and a polyimide film. The actuators displayed a linear response to relative humidity and showed good selectivity and reproducibility. The bending of the actuators was attributed to the greater volume expansion and loss of stiffness in the nanoclay layer. These actuators were successfully applied to create various user-friendly hygrometer prototypes.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Trung Tuyen Bui, Duc Cuong Nguyen, Si Hiep Hua, Hyungphil Chun, Yong Shin Kim
Summary: This study presents a novel method for synthesizing magnetic core-shell nanocomposites for environmental applications. The method involves encapsulating magnetic Fe3O4 nanoparticles with microporous zeolitic imidazolate framework-8 (ZIF-8) nanocrystals through ultrasonic activation. The synthesized Fe3O4@ZIF-8 nanoparticles exhibit a core-shell structure and have high content of ZIF-8, combined with micro/mesoporosity. The functional nanomaterial can be used as adsorbents that are easily separated using a magnet, and show excellent adsorption performance for the removal of copper ions from water.
Correction
Chemistry, Physical
Duong Duc La, Hoai Phuong Nguyen Thi, Yong Shin Kim, Anushri Rananaware, Sheshanath V. Bhosale
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Si Hiep Hua, Trung Tuyen Bui, Duc Cuong Nguyen, Yeong Beom Cho, Hyungphil Chun, Yong Shin Kim
Summary: In this study, a method for eye-readable hydrogen detection using a metal-organic framework membrane on the surface of a hydrogen-responsive pigment is reported. The method shortens the response time, increases the detection sensitivity, and significantly enhances the selectivity against potential interferents.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Duong Duc La, Hoai Phuong Nguyen Thi, Yong Shin Kim, Anushri Rananaware, Sheshanath V. Bhosale
APPLIED SURFACE SCIENCE
(2017)
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)