ACS Sustainable Chemistry & Engineering
·
2024
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IF 7.1
Pan Tang,Qi Chen,Ye Jiang,Li Li,Xiaomin Zhang,Ningya Yu,Shengpei Su,Yidan Jing,Jin Zhu
Traditional printed paper, due to its irreversible chromogenic properties, is difficult to recycle. Thus, developing an ecofriendly storage carrier that allows for reversible information recording is one of the current research priorities. However, the thermal reversible information storage carriers reported so far have difficulty forming a stable structure, which limits their large-scale application. In this study, a novel color developer, 1-(4-hydroxyphenethyl)-3-octadecylurea (PCU), was synthesized using p-hydroxyphenylethylamine and octadecyl isocyanate. By combining it with fluoran dyes (FDs) and introducing natural cellulose as a binder resin, we successfully prepared a thermoreversible color-changing cellulose film with excellent color development performance. This film has a tensile strength of over 40 MPa and an elongation of over 10% and exhibited stable and efficient rewritable performance in 50 cycles of color development tests. Furthermore, it maintains a high color density for up to 20 weeks, and environmental factors such as temperature, humidity, and sunlight exposure have minimal effect on its color display and retention capabilities. Building upon this, application scenarios, such as ink-free stamping, thermal printing, and information encryption, have been further designed. The results show that the film’s ink-free stamping is simple and effective, thermal printing patterns are clear, and information encryption is convenient and straightforward, demonstrating broad application prospects and providing a new approach to the fabrication of novel reversible information storage carriers.
研究领域:
材料科学
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信息存储技术
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DOI
高影响因子
PLoS One
·
2020
·Vol. 15
·期 3
·e0230410
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IF 2.74
Jin Dong Cho,Jaeman Son,Chang Heon Choi,Jin Sung Kim,Hong-Gyun Wu,Jong Min Park,Jung-in Kim
We investigated the influence of incorporating tartrazine on the dose response characteristics of radiochromic 3D dosimeters based on polyurethane resin. We use three types of polyurethane resins with different Shore hardness values: 30 A, 50 A, and 80 D. PRESAGE dosimeters are fabricated with different chemical components and concentrations. Tartrazine (Yellow No. 5) helps incorporate a yellow dye to fabricate the dosimeter. Elemental composition is analyzed with the Z eff . Three sets of six different PRESAGE dosimeters were fabricated to investigate the effects of incorporating yellow dye on the dose response characteristics of the dosimeter. The dose response curve was obtained by measuring the optical absorbance using a spectrometer and optical density using optical CT, respectively. The energy and dose rate dependences are evaluated for the dosimeter with the highest sensitivity. For the optical density measurement, significant sensitivity enhancements of 36.6% and 32.7% were achieved in polyurethane having a high Shore hardness of 80 D and 50 A by incorporating tartrazine, respectively. The same results were obtained in the optical absorbance measurements. The ratio of the Z eff of the dosimeter with 80 D Shore hardness to water was 1.49. The polyurethane radiochromic dosimeter with a Shore hardness of 80 D showed the highest sensitivity and energy and dose rate independence upon the incorporation of tartrazine.
研究领域:
医学物理
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放射生物学
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DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2022
·
IF 12.545
Hengjia Zhu,Lizhang Xu,Panwang Hu,Bangxiang Liu,Mengzhu Wang,Xiulian Yin,Jianming Pan,Xiangheng Niu
Monitoring of pesticide residues in food and environmental matrices is undoubtedly crucial to guarantee food safety and ecological health, yet how to realize their sensitive and convenient detection is still challenging. Herein, we propose an all-in-one test strip that elaborately integrates bioenzyme, nanozyme and chromogen together, and achieve the highly sensitive and convenient sensing of pesticide residues assisted by a smartphone. A sequential self-assembly strategy was first explored to acquire an integrative bioenzyme-nanozyme-chromogen assembly, and then the assembly was confined in a biocompatible hydrogel to construct the test strip. Thanks to both the proximity and confinement effects, a ∼1.2-fold improvement of the cascade catalytic efficiency was gained to benefit high-sensitivity detection. More importantly, since all the sensing elements, including target recognition units and signal amplification modules, were rationally integrated in the test strip, detection operation was significantly simplified, making it possible for in-field rapid analysis. Besides, the microenvironment provided by the alginate hydrogel carrier endowed the test strip with an excellent sensing stability. By taking paraoxon as a typical pesticide, high-performance detection of the target was accomplished via the smartphone-assisted all-in-one test strip. Moreover, the test strip was successfully applied for paraoxon detection in various real samples and exhibited good correlations with commercial kits, demonstrating its great prospect for practical applications. Our work not only offers a new tool for the high-sensitivity and convenient monitoring of pesticide residues, but will also inspire the development of efficient multi-enzyme sensing platforms.
研究领域:
分析化学
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食品安全
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Qi Liu,Shan Gao,Guiying Wang
In this study, a novel series of thermochromic phase change materials (TC-PCMs) with multicolor responsiveness and superior thermal energy storage capabilities were developed successfully. The monochromatic thermochromic microencapsulated phase change materials (TC-MPCMs) cores were prepared using bisphenol A as the color developer, crystal violet lactone or 6′-(diethylamino)-1′,3′-dimethylfluoran or 2′-(dibenzylamino)-6′-(diethylamino)fluoran as color former, and tetradecanol as solvent, showing blue, red and green respectively. Binary formers combinations produced purple, cyan and reddish-brown microcapsules, with cyan and reddish-brown systems showing intermediate green transition state. The microcapsules were embedded in polyvinyl alcohol/waterborne polyurethane matrices to prepare thermochromic films (TC-F), with trimesoyl chloride to modify the films' water resistance. The thermal properties, chromic characteristics, thermal stability, microstructure, mechanical properties, and surface modifications of the materials were systematically analyzed using relevant characterization techniques. The results showed that the enthalpy values of TC-PCMs, TC-MPCMs, and TC-F were around 200 J/g, 125 J/g, and 10 J/g, respectively, exhibiting favorable thermal storage characteristics. The size of TC-MPCMs decreases with increasing emulsion dosage. The mechanical properties of the TC-F decrease as the amount of TC-MPCMs added increases. The water contact angle of the modified film showed a significant increase, indicating excellent hydrophobic properties. Both TC-MPCMs and TC-F maintained execellent performance after 100 thermal cycles, demonstrating exceptional durability. Furthermore, experimental tests of TC-F as a temperature-indicating label demonstrated rapid thermochromic response during heating. Thus, this engineered material shows significant potential for applications in wearable devices, temperature sensors, and anti-counterfeiting technologies.
研究领域:
材料科学
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化学工程
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高分子科学
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热能存储
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智能材料
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传感器技术
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Quanliang Li,Xiyu Wang,Ping Chen,Biying Zhang
A sensitive and portable count film based on dedicated enzyme response combined with a composite chromogenic agent was fabricated for coliform enumeration. Cold-water gel was conjugated with 5-bromo-4-chloro-3-indolyl-β- d -galactoside, crystalline violet, neutral red, and lactose to prepare a composite chromogenic agent. The involvement of MgCl 2 and isopropyl-β-D-thiogalactoside appreciably boosted the analytical performance. Compounding with Tween-80 and porous starch, stable bubbles provided corroborative evidence for positive colonies without any further validation. The proposed count film exhibited prominent enumeration performances within the linear range of the relationship varied from 3 CFU/mL to 150 CFU/mL, with an LOD of 3 CFU/mL. The as-obtained coefficient of variation was less than 5%, and recovery rates ranged from 101.30% to 104.47%. In light of its favorable sensitivity and satisfactory feasibility, this reliable analytical pattern provided a novel potential orientation for the evaluation of microorganisms in food-safety detection.
研究领域:
微生物学
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食品科学
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分析化学
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DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Hanwen Zhang,Jiabin Jin,Xini Wang,Wei Han,Lei Qin,Lin Chen,Xiaoyan Mao,Zhenjiang Liu,Xingwei Xiang
The presence of pesticide residues in aquatic environments poses a significant threat to both aquatic ecosystems and human health. The presence of these residues can result in significant harm to aquatic ecosystems and can negatively impact the health of aquatic organisms. Consequently, this issue requires urgent attention and effective measures to mitigate its impact. However, developing sensitive and rapid detection methods remains a challenge. In this study, an all-in-one test strip, which integrated bioenzymes, nanoenzymes, and a chromogen, was developed in combination with an enzyme labeling instrument for a highly sensitive and convenient sensing of malathion residues. The oxidase activity of heme chloride (Hemin) in the strip can catalyze the oxidation of H 2 O 2 and 3,3′,5,5′-tetramethylbenzidine (TMB) to produce a blue-colored oxide. Simultaneously, the alkaline phosphatase (ALP) present in the strip can break down l -ascorbic acid-2-phosphate to produce ascorbic acid (AA). This AA then acts to reduce the oxidized form of TMB, turning it into a colorless substance and leading to the disappearance of its fluorescent signal. In the presence of a pesticide, the activity of ALP is inhibited and formation of AA is blocked, thereby preventing the reduction of oxidized TMB and producing a colored signal. According to this principle, the integrated test strip detected the target pesticide with high performance as per the optical density value determined via an enzyme marker. The detection limit of the test strip was 0.209 ng/mL with good sensitivity. The method was used for detecting malathion in actual river water samples, and the recoveries were in the range of 93.53 %–96.87 %. The newly devised technique effectively identified malathion in samples of natural water. This research has introduced a novel approach for the precise and convenient surveillance of pesticide remnants. Additionally, these discoveries could inspire the advancement of proficient multi-enzyme detection systems.
研究领域:
环境科学
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分析化学
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生物技术
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水质监测
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DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2022
·Vol. 11
·期 14
·2102352
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IF 11.092
Xueping Kong,Yimeng Yang,Guofeng Wan,Qiuyan Chen,Huimei Yu,Bao Li,Lixin Wu
In the search for materials with enhanced near-infrared (NIR) photothermal properties and capability of providing environment-sensitive therapy, a method that combines isolated components into one nanocomposite is developed. The technique simultaneously involves redox, charge-transfer formation, and ionic complexation. During the polyoxophosphomolybdate (PMo) cluster mixing with biosafe chromogen 3,3’,5,5’-tetramethylbenzidine (TMB), the reduced state (rPMo) and the oxidized TMB in the state of charge-transfer complex (cTMB) emerge spontaneously. The two reduced and oxidized components with charges form a stable ionic complex that resists physiology, saline, broad pH, and elevated temperature. Both the rPMo and cTMB contribute to the total sustainable photothermal conversion efficiency of 48.4% in the NIR-II region. The ionic complex exhibits biocompatibility in in vitro cell viability evaluation and is demonstrated to enter tumor cells with sustained photothermal property and complexation stability. Due to the local acidity that triggers further interaction among rPMo clusters, a distinct accumulation of the ionic complex at the tumor position is observed after caudal vein injection. Moreover, a remarkable local NIR-II photothermal image appears. The diminishment of tumor in mice with maintained body weight demonstrates the comprehensive effect of this NIR-II photothermal therapeutic material.
研究领域:
材料科学
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纳米技术
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生物医学工程
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诊疗学
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光热治疗
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）