RSC Advances
·
2023
·Vol. 13
·期 36
·24878-24886
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IF 3.9
Depeng Li,Qingqing Guan,Xiaoyun Hu,Yuhong Su,Zhen Su
A new simple Pt(II) terpyridyl salt that shows reversible response towards acetonitrile and irreversible response towards methanol has been reported, accompanied with the colorimetric/luminescent changing from red to yellow. Experimentally and theoretically, the spectroscopic change derives from the hydrogen bonds between crystal water in the Pt(II) terpyridyl salt and external organic molecules, and the different strength of hydrogen bond leads either reversible or irreversible stimuli-response. Furthermore, this Pt(II) terpyridyl salt has been on one hand applied as a probe for sensing acetonitrile in water solution, with high selectivity, good reversibility, proper sensitivity and fast response rate, and on the other hand as advanced anticounterfeiting materials. The current study provides a new approach to acquire and design either reversible or irreversible stimuli-responsive luminescent materials.
研究领域:
化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
Materials Research Express
·
2020
·Vol. 6
·期 12
·125350
·
IF 1.929
Chengmin Hou,Mei Wang,Xiaolin Zhang,Na Li,Xueqi Kong,Guangming Zhuo
The preparation of hydrophobic surfaces has been extensively studied, but the reversible responsive hydrophobic surface has received less attention. In this paper, poly(styrene-random-methyl methacrylate-random-acrylic acid) (P(St-r-MMA-r-AA)) was prepared by conventional free radical polymerization, and the filter paper and cotton fabric were immersed in P(St-r-MMA-r-AA) methanol solution to construct a hydrophobic surface. The hydrophobic property, chemical composition and surface morphology of the hydrophobic filter paper and cotton fabric surface were characterized by contact angle, Gibbs free energy, infrared spectroscopy and scanning electron microscopy. The optimum conditions for constructing hydrophobic filter paper and cotton fabric surface were investigated. When the surfaces of hydrophobic filter paper and cotton fabric were treated with methanol, tetrahydrofuran and deionized water respectively, the semihydrophobic-hydrophobic-hydrophilic reversible transformation could be achieved. After ten cycles of experiments, the contact angles under the three solvent stimulations had no significant change, and the hydrophobic properties of the hydrophobic cotton fabric were superior to that of hydrophobic filter paper. The Gibbs free energy calculation of the hydrophobic surface indicated that the change in surface hydrophobic property was due to the inversion between the hydrophobic PS segment, the PMMA segment, and the hydrophilic PAA segment.
研究领域:
材料科学
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表面化学
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DOI
高影响因子
MACROMOLECULES
·
2013
·
IF 5.521
Wei Sun,Shouxue Zhou,Bo You,Limin Wu
This paper is the first to present a facile method of fabricating intelligent surfaces with reversible, precisely controllable, two-way responsive wettability. The ABC-type block copolymers of tert-butyl methacrylate (tBMA), 2-hydroxyethyl methacrylate (HEMA), and 2-(diisopropylamino)ethyl methacrylate (DPAEMA) were synthesized through living radical polymerization mediated by a reversible addition–fragmentation chain transfer (RAFT) process and then grafted onto acyl chloride group-functionalized SiO2 films to produce V-shaped PDPAEMA-b-PHEMA-b-PtBMA brush-grafted SiO2 films. After hydrolysis, V-shaped polymer brushes with two arms of PDPAEMA and PMAA were produced. Because the PMAA and PDPAEMA segments were highly and independently responsive to pH values, the as-obtained films not only exhibited reversible, one-to-one, precisely controllable wettability but also two-way response behavior as pH value increased.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
Light-Science & Applications
·
2025
·Vol. 14
·期 1
·1-14
·
IF 23.4
Cai Junhu,Zhang Xiang,Chen Yu,Lai Wenzong,Ye Yun,Xu Sheng,Yan Qun,Guo Tailiang,Luo Jiajun,Chen Enguo
Multifunctional materials have attracted tremendous attention in intelligent and interactive devices. However, achieving multi-dimensional sensing capabilities with the same perovskite quantum dot (PQD) material is still in its infancy, with some considering it currently challenging and even unattainable. Drawing inspiration from neurons, a novel multifunctional CsPbBr 3 /PDMS nanosphere is devised to sense humidity, temperature, and pressure simultaneously with unique interactive responses. The carefully engineered polydimethylsiloxane (PDMS) shell enables the reversible activity of the core CsPbBr 3 , serving a dual role similar to dendrites in conveying and evaluating external stimuli with high sensitivity. Molecular dynamics analysis reveals that the PDMS shell with proper pore density enhances the conductivity in water and heat, imparting CsPbBr 3 with sensitive but reversible properties. By tailoring the crosslinking density of the PDMS shell, nanospheres can surprisingly show customized sensitivity and reversible responses to different level of stimuli, achieving over 95% accuracy in multi-dimensional and wide-range sensing. The regular pressure-sensitive property, discovered for the first time, is attributed to the regular morphology of the nanosphere, the inherent low rigidity of the PDMS shell, and the uniform distribution of the CsPbBr 3 core material in combination. This study breaks away from conventional design paradigms of perovskite core-shell materials by customizing the cross-linked density of the shell material. The reversible response mechanism of nanospheres with gradient shell density is deeply explored in response to environmental stimuli, which offers fresh insights into multi-dimensional sensing and interactive display applications.
研究领域:
材料科学
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传感器技术
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分子动力学
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产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Jieqiu Wang,Tian Yin,Jianping Ge
Thermochromic photonic crystal (PC) is a promising material for anti-counterfeiting applications, but there are still challenges to further improve the anti-counterfeiting performance and the practicability in usage. Here, a disposable thermally triggered PC anti-counterfeiting tag with irreversible response and multi-step color changes is developed based on the thermochromic Silica/(Polyethylene glycol-Ethoxylated trimethylolpropane triacrylate) (SiO 2 /(PEG-ETPTA)) double-layer film. The fast and irreversible thermal response come from the quick melting and infiltration of PEG-ETPTA into the PCs upon heating. The multi-step color change at different temperatures originated from the regioselective control of the UV curing degree of the PEG-ETPTA layer and the resulting thermochromic temperature of the double-layer film. Therefore, the invisible PC pattern on the tag can be revealed part by part upon heating and became invisible again after overheating, which offered diversified visual effects and enhanced anti-counterfeiting performances.
研究领域:
材料科学
·
光学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Jingjing Liang,Dingfang Hu,Wenjun Xu,Lingya Peng,Ke Liu,Yu Fang
Sensing materials innovation plays a crucial role in the development of high-performance film-based fluorescent sensors (FFSs). In our current study, we present the innovative fabrication of four fluorescent nanofilms via interfacially confined dynamic reaction of a specially designed fluorescent building block, a new boron-coordinated compound (NI-CHO), with a chosen one, benzene-1,3,5-tricarbohydrazide (BTH). The nanofilms as prepared are robust, uniform, flexible, and thickness tunable, at least from 40 to 1500 nm. The fabricated FFSs based on Film 3, one of the four nanofilms, shows highly selective and fully reversible response to NH3 vapor with an experimental detection limit of <0.1 ppm and a response time of 0.2 s. The unprecedented high performance of the nanofilm is ascribed to the specific quenching of its fluorescence emission owing to formation of an excited-state complex between the sensing unit and the analyte molecule. Efficient mass transfer also contributes to the high performance owing to the porous adlayer structure of the nanofilm. This work provides an example to show how to develop a high-performance sensing film via controlling the film’s structure, especially the thickness.
研究领域:
材料科学
·
化学传感器
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产品关联
DOI
PubMed
高影响因子
Journal of the Iranian Chemical Society
·
2023
·Vol. 20
·期 11
·2703-2712
·
IF 2.4
Zhang Chenglu,Nie Shiru,Ding Yanwei,Liu Chang,Zhang Yanpeng,Zhang Yang,Guo Jinghao
An “off–on–off” fluorescent probe NapEb for high selectivity and reversible response to H 2 O 2 and GSH was synthesized. Inspired by the role of GSH in the human body, the –Se–N– bond in ebselen was successfully used as the recognition site. The probe NapEb is sensitive (LOD = 8.4 µM) and fast for H 2 O 2 (within 200 s). It can be used not only for qualitative and quantitative detection of H 2 O 2 in real samples, but also has been successfully used for the imaging detection of H 2 O 2 in MCF-7 cells with good effect. Moreover, continuous fluorescence recognition of GSH has also achieved significant results, the process is reversible and can be repeated for 5 times. The experimental results show that satisfactory results can also be obtained by structural modification at the 3-position of naphthalimide.
研究领域:
生物化学
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分析化学
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医学检测
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DOI
高影响因子
Frontiers in Chemistry
·
2019
·
IF 3.782
Li Xiaochong,Wang Zhanhua,Xia Hesheng
Mesoporous silica nanoparticles (MSN) covered by polymer coatings, cross-linked by weak coordination bonds were expected to present a reversible responsiveness under on-off ultrasound stimuli. Herein, we prepared a sodium alginate (SA) modified MSN with carboxyl-calcium (COO−-Ca2+) coordination bonds in the modified layer, which could block the mesopores of MSN and effectively prevent the cargo from pre-releasing before stimulation. The coordination bonds would be destroyed under the stimulation of low intensity ultrasound (20 kHz) or high intensity focused ultrasound (HIFU, 1.1 MHz), leading to a rapid and significant cargo release, and then they could be reformed when ultrasound was turned off, resulting in an instant cargo release stopping. The reversible cleavage and reformation of this coordination bonds under on-off ultrasound stimulus were confirmed by the gel-sol transition behaviors of the SA-CaCl2 gels. An excellent real-time control of rhodamine B (RhB) release performance was obtained under the ultrasound stimuli. Obviously, the cargo release ratio could reach to nearly 40% when HIFU (80 W) was turned on for 5 min, and remained basically constant when ultrasound was turned off, which would finally reach to nearly 100% within 30 min under this on-off pulsatile status. These hybrid MSN based nanoparticles with excellent reversible ultrasound on-off responsiveness were of great interest in on-demand drug delivery applications in the future.
研究领域:
纳米技术
·
药学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2019
·Vol. 6
·期 10
·1802112
·
IF 15.804
Ke Meng,Chi Yao,Qianmin Ma,Zhaohui Xue,Yaping Du,Wenguang Liu,Dayong Yang
Fluorochromic materials that are dynamic in response to external stimuli are of great interest for the development of advanced sensors and luminescent materials. Herein, a design based on a lanthanide-containing polymeric hydrogel possessing characteristic emission of lanthanides (Eu and Tb) and showing response to stimuli of metal ions is reported. The fluorochromic hydrogel is prepared using a lanthanide–mannose complex in gelation matrix. The lanthanide–mannose complex shows tunable fluorescent emission in response to Fe 2+ , due to the inhibition of the “antenna effect” between metal ions and ligands upon stimulation. The fluorescent hydrogel shows reversible “On/Off” fluorochromic response to Fe 2+ /ethylenediaminetetraacetic acid (EDTA). Remarkably, the fluorescent hydrogel is proven nontoxic and biocompatible; and a proof-of-application as in situ 3D cell culture extracellular matrix with reversible fluorochromic “On/Off” switch upon Fe 2+ /EDTA is demonstrated. This reversibly responsive fluorochromic hydrogel demonstrates a way to fabricate smart optical materials, particularly for biological-related applications where reversible response is required.
研究领域:
材料科学
·
生物材料
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传感器
·
生物技术
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xiaoqi Jiang,Jingcheng Huang,Mengting Li,Linjin Li,Yinuo Chen,Jiangfei Chen,Junlun Zhu,Xuedong Wang,He Mei
Detecting tetracyclines' (TC) residues is of great significance for evaluating the food and environmental safety. Herein, we pioneered a reversible-responsive ratiometric fluorometry by integrating the red fluorescence of Eu 3+ /GMP lanthanide coordination polymers (Eu 3+ /GMP LCPs) with the blue fluorescence of an anthracene-based imidazolium ionic liquid (ABIIL). In the presence of TC, the fluorescence of ABIIL was quenched by TC via the inner-filter effect and photoinduced electron-transfer process, but that of Eu 3+ /GMP LCPs was enhanced owing to the antenna effect between Eu 3+ and TC. Based on the reversible variations of the fluorescence signals, a fluorescent assay based on ABIIL-Eu 3+ /GMP LCPs was engineered to detect TC with satisfactory sensitivity and selectivity. A good linearity for TC was acquired from 0 to 50 μM with the detection limit of 3.0 nM and the significant color changes. Therefore, the assay was a promising approach for the visual detection of TC in complex media
研究领域:
分析化学
·
食品安全
·
环境监测
·
荧光传感
·
药物残留检测
·
材料化学
·
分子识别
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Biomedical Nanotechnology
·
2018
·Vol. 14
·期 9
·1543-1555
·
IF 5.068
Li Yanpeng,Ren Junli,Sun Runcang,Wang Xiaohui
A sensitive and reversible sensing platform based on fluorescent carbon dots (CDs) allowing capture and detection of metal ions is of significance for developing diagnostic probes and in-situ environmental-monitoring. Here, a simple and effective method for converting biomass
lignin into fluorescent CDs is developed. The obtained CDs, with stable fluorescence and excellent water solubility, are fabricated as unique model biosensors to access the metal-induced quenching mechanism. It is demonstrated that selective fluorescence quenching behaviors of lignin CDs are
firstly found related to the valence-state of metal ions. Moreover, a reversible control of CDs fluorescence is realized by introducing reducing agents. This novel biosensor and the approach to quenching mechanism may evoke new insight in designing ions-sensor and monitoring biologic redox
signal.
研究领域:
化学
·
材料科学
·
生物传感
·
环境监测
·
生物技术
✓ 已验证
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Yazhou Duan,Weihan Tao,Yinchun Fang,Xianfeng Wang
Textiles-based wearable sensors with colorimetric sensing can transform external stimuli to visible color changes, which are ideal for the development of low-cost wearable sensors. Among them, textile-based water-response structural color colorimetric sensors have received wide attention for their pollution-free and eco-friendly characteristics. In this research, poly (styryl-methyl methacrylate-[3-(methylacrylamide) propyl] trimethyl ammonium chloride) (P(St/MMA/MAPTMA)) microspheres with hydrophilic quaternary ammonium salt groups were prepared, which were atomized and deposited on textile fabrics anticipating to prepare textile-based water response colorimetric sensors. P(St/MMA/MAPTMA) microspheres with different particle diameters were obtained by adjusting the mass ratios of the monomers, which were assembled on the fabrics to form different structural colors. These structural colors showed fast water response property to change color when they were wetted by water within 2 s. The P(St/MMA/MAPTMA) microspheres structural colors on the fabrics can return to their original structural colors after drying showing the reversible water responsiveness, which have the promising application prospect of water-response colorimetric sensors. Moreover, the antibacterial rates of these structural colors on fabrics were greater than 98 % showing excellent antibacterial properties. This research shows that this textile-based water-response structural color colorimetric sensors exhibit potential application prospects in the field of water content monitoring, such as the diapers for monitoring the amount of baby’s urine, or the clothing for monitoring the amount of human sweat.
研究领域:
材料科学
·
传感器与传感技术
·
可穿戴电子
·
光子材料
·
智能纺织品
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）