Journal of Materials Chemistry C
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2024
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IF 5.7
Xueting Zhao,Junhao Ma,Jindan Zha,Kuisui Huang,Chenghui Chai,Zhaoyi Yin,Zhiguo Song,Jianbei Qiu,Yongjin Li
Traditional inorganic photoreversible color-switching materials (PCSMs) usually exhibit slow color switching and single color switching characteristics, which severely restrict their use in information storage, anti-counterfeiting, and other applications. Herein, we report a fast photoresponsive color-switching inorganic PCSM based on oxygen-vacancy (OV) Bi3O4Br:Yb3+,Er3+ (BYE-OV) nanosheets. The BYE-OV nanosheets demonstrated considerable photoreduction activity and effective charge carrier separation when exposed to ultraviolet (UV) light, resulting in a rapid change in color from light yellow to dark brown. Moreover, under 980-nm excitation, the green and red emissions of the BYE-OV nanosheets were considerably enhanced, being 9.6 and 8.8 times higher than those of the BYE nanosheets, respectively. Additionally, BYE-OV nanosheets were combined with an agarose hydrogel to produce BYE-OV/agarose nanocomposite films, which exhibited excellent photoreversible color switching and upconversion (UC) luminescence. This research provides new insights into the development of innovative inorganic PCSMs, thereby considerably broadening their potential applications.
研究领域:
材料科学
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光学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 6
·1-12
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IF 2.8
Zhou Silan,Zhao Nanyin,Li Jun
Electrochromic materials are substances that undergo the implantation or removal of electrons and ions in response to an electric field, which is redox reactions. These materials can change from one color to another and exhibit a reversible color change after a reverse voltage is applied. In this study, we report a novel material, Bi 2 O 2 Se, capable of both electrochromic and electrochemical energy storage. We successfully synthesized Bi 2 O 2 Se nanosheets using a hydrothermal method. Electrochemical tests on the Bi 2 O 2 Se nanosheets were conducted utilizing a three-electrode system at an electrochemical workstation. Under the influence of an electric field, the Bi 2 O 2 Se nanosheets transitioned from gray to yellow. This discoloration behavior was reversible upon applying reverse voltage, thereby exhibiting an electrochromic effect. Discharge at a voltage of 0 V after discoloration, resulting in reverse current generation. During this discharge process, the color of the Bi 2 O 2 Se electrode gradually recovers, exhibiting its energy storage capability. These findings suggest that Bi 2 O 2 Se nanosheets hold promise for potential applications that integrate both electrochromic functionality and energy storage capabilities. In the near future, they are likely to have a substantial impact on our daily lives.
研究领域:
材料科学
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电化学
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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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
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Congcong Zhai,Guoxin Fang,Wenqing Liu,Tingyao Wu,Luyang Miao,Luqing Zhang,Jiachen Ma,Yabin Zhang,Chuanyong Zong,Shuxiang Zhang,Conghua Lu
Functionalized materials with reversible color switching are highly attractive in many application fields, especially as rewritable media for information storage. It is critical yet challenging to develop a cost-effective strategy for the fabrication of stimulus-responsive chromogenic systems. Herein, we present a versatile dip-coating approach to fabricate robust smart textile with acid/base-driven chromotropic capability. Owing to the introduction of novel maleimide-based copolymers bearing azobenzene derivative moieties, smart textiles possess rapid color switching between yellow and orange-red, which is triggered by acid–base stimulations with the resulting reversible protonation/deprotonation of maleimide moieties. As a proof of concept of the application of the smart textile for high-performance rewritable media, various rewritable elaborate patterns can be fast trifluoroacetic acid-printed/triethylamine-erased (within 20 s) with excellent cycling stability and long legible duration (>30 days). Meanwhile, the smart textile can be employed as a visual sensor for the detection of hydrogen fluoride gas leakage. It is highlighted that the as-prepared robust smart textiles with superhydrophobic surfaces have excellent antifouling properties and chemical/mechanical stabilities, which can tolerate harsh environmental conditions and repetitive mechanical deformation. The robust smart textiles with simple low-cost large-scale production may find more advanced potential applications besides information storage and sensors demonstrated.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
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2019
·Vol. 25
·期 44
·10450-10455
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IF 5.16
Mei-Yan Gao,Lei Zhang,Jian Zhang
Graphical Scale it up ! A facile acid-controlled approach has been developed for the synthesis of a range of polyoxotitanium clusters (PTCs; see figure). By using propionic acid as both ligand and solvent, Ti 44 -oxo clusters with four labile sites and reversible photochromic behavior were prepared. Moreover, large-scale synthesis of the Ti 44 -oxo clusters was achieved, with one-pot yields scaled up to about 10 g. A range of polyoxotitanium clusters (PTCs) was constructed by tuning the type of acid (inorganic and organic) in alcoholic solvents, from Ti 4 , Ti 6 , Ti 9 , Ti 11 , to Ti 16 . After removing the t BuOH solvent, giant carboxylate-stabilized Ti 44 -oxo clusters in which propionic acid serves as both ligand and solvent were ultimately obtained. The four labile sites in the Ti 44 cluster core can be occupied by two formate and two propionate anions ( PTC-165 ) or a pair of glutarate ( PTC-166 ) or 3-methylglutarate anions ( PTC-167 ). According to the synthesis of PTC-155 to PTC-167 , the propionic acid solvent plays a crucial role in the construction of giant Ti oxo clusters. Their one-pot yields, which readily reached up to 8.75 g for PTC-165 and 9.96 g for PTC-166 , proved the feasibility of large-scale preparation. More interestingly, the obtained Ti 44 -oxo clusters are almost completely surrounded by carboxylate ligands, which allow them to retain crystalline stability in air for about three weeks and in either acidic or basic aqueous solution over a wide pH range for at least 6 h. In addition, PTC-165 and PTC-166 exhibit excellent UV photocurrent response and reversible photochromic effect. This work provides a systematic approach for constructing high-nuclearity and stable PTCs on a large scale, which is significant for future applications of PTC-based photochemical devices.
研究领域:
无机化学
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材料科学
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光化学
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Chunxiao Zhang,Hongxiao Yu,Yuanzhi Zhang,Kun Wang,Mengying Chen,Xu Wang
Inspired by the natural world's fascinating capacity for color change, researchers have developed various responsive hydrogels that shift colors. Among these, hydrogels that react to pH changes are particularly notable for their unique properties. The urea-urease autocatalytic reaction, a key pH clock reaction, is especially effective in temporarily adjusting these hydrogels' properties and enabling color changes in response to stimuli. In this study, we synergize the urea-urease clock reaction with the pH-sensitive color transformation of neutral red (NR), thereby establishing an NR-urea-urease clock reaction system. This system exhibits a dynamic color cycle from yellow to red and back to yellow. By incorporating this color transition mechanism into polymer hydrogels, we successfully initiate a pH change within the system. This innovation paves the way for a smart material capable of displaying temporary information through enzymatic reactions . The temporal variation in information display is finely tuned by adjusting the urea and urease concentrations. Such reversible color-changing hydrogels hold promising prospects for applications in secure information transmission and dynamic camouflage, marking a significant step forward in systems chemistry and materials science.
研究领域:
材料科学
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系统化学
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生物化学
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DOI
高影响因子
DYES AND PIGMENTS
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2024
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IF 4.1
Lu Yang,Jiaguang Meng,Lingjie Yu,Xingyun Gao,Yuqing Chen,Yongzhen Wang,Tao Xue,Yaming Liu,Chao Zhi
Temperature/humidity dual-responsive fabrics, which can change color when exposed to heat and moisture separately or simultaneously, demonstrate excellent reversibility of color-changing. Herein, thermochromic microcapsules were synthesized and mixed with humidity-sensitive discoloration materials to create dual-responsive fabrics using screen printing technology. As the temperature rises from 30 to 80 °C, the fabric shifts from green to magenta. Similarly, as relative humidity drops from 100 % to 0 %, the fabric transitions from green to purple. The color of the fabric changes in a certain gradient by heat and moisture simultaneously. The fabric showcases a dependable, reversible color change, broadening the spectrum of visual possibilities. After enduring 30 rubs and 30 washes, the fabric's color difference value only slightly decreased, affirming its durability. Compared to untreated fabrics, dual-responsive fabrics exhibit remarkable flexibility and breathability. Therefore, this smart fabric was utilized to create fashionable garments, showcasing its visual effects across various temperatures. Simulations further examined its potential applications in monitoring human skin and equipment temperature, detecting humidity levels in storage, and information encryption. With its versatile properties, this intelligent fabric holds highly desirable properties for applications in textile fashion, environmental monitoring, and healthcare.
研究领域:
材料科学
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纺织工程
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智能材料
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DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2025
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IF 6.3
Yuedan Wang,Mengjie Li,Yun Lin,Anqi Li,Changhui Li,Mufang Li,Wenwen Wang,Qiongzhen Liu,Dong Wang
In this paper, a high-performance photochromic system with rapid fading was constructed by adjusting the pH of tungstate, introducing dopants, reducing agents and polydimethylsiloxane (PDMS) coatings. In addition, the chromaticity of photochromic materials can be precisely controlled by changing the doping and reducing agent content. Continuous large-scale fabrication of novel photochromic fiber/fabric using dip coating and wet spinning has been proposed. The photochromic fibers/fabric exhibit significant color contrast (ΔE = 40.2), rapid color switching (5 s), fast fading time (10 min), good cycling stability (20 times), as well as long color-retention (7 days) under UV/visible light irradiation. Photochromic fibers after packaging with PDMS have excellent water resistance and maintain good photochromic properties even after washing (20 cycles) when exposed to water, ethanol, and detergent solutions. The photochromic fibers can be used as wristbands or embroidered on various textiles as wearable UV indicators. With the increase of UV dose, it has real-time and sensitive color rendering, which provides early warning for high dose UV radiation. The color-changing mechanism of photochromic fabric has been studied. In addition, photochromic solution has fast UV response and fading ability, which can realize the application of rewritable ink, color-changing film. Notably, its preparation process has the advantages of low cost, environmental friendliness and large-scale production, providing a new solution for smart sensing and anti-counterfeiting application.
研究领域:
材料科学
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纺织工程
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功能高分子材料
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智能传感
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光化学
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纳米复合材料
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环境响应材料
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Mengjie Li,Tingting Han,Huiwen Liu,Juan Xu,Chong Sun,Yongzhi Zhu,Weimin Xu,Daoying Wang
In this work, an intelligent and sensitive polyvinyl alcohol-acidochromic chitosan (PVA-ACS) nano-sensing label was developed for visually monitoring meat freshness. Based on the synthesis of 1-hydroxy-4-[4-(ethylsulfurate sulfonyl)-phenylazo]-naphthalene (HESPN), ACS was prepared through hydrogen bonding between the sulfonic acid groups in HESPN structure and the hydroxyl groups in chitosan (CS). Herein, PVA was used as the functional matrix and electrospinning technology was employed in this process. The chemical structure, surface morphology, mechanical properties, hydrophilicity, thermal stability, and biocompatibility of PVA-ACS nano-sensing label were investigated. Moreover, the PVA-ACS nano-sensing label exhibited sensitive color responsiveness and reversible color switching, and the properties enabled the naked-eye inspection of meat freshness during production, processing and transportation. Furthermore, a strategy incorporated the nano-sensing labels with a smartphone was developed to record color information in conjunction with the color recognition software (ColorColl). This work provided a valuable perspective for real-time freshness monitoring with high satisfaction and efficiency, opening new possibilities for meat quality grading.
研究领域:
食品科学
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生物材料
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纳米技术
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智能传感
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包装工程
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食品安全
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高分子化学
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肉品质量控制
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）