Journal of Advanced Ceramics
·
2022
·Vol. 11
·期 6
·974-983
·
IF 11.534
Zhao Jingtao,Lei Lei,Ye Renguang,Zhang Junjie,Zhang Xianghua,Xu Shiqing
Natural sunlight activated persistent luminescence (PeL) is ideal candidate for optical information display in outdoors without the requirement of electric supply. Except the brightness and duration, the stability especially water resistance of the PeL materials is of significant importance for practical application, which remains a great obstacle up to date. Herein, we report a new sunlight activated PeL glass ceramic containing hexagonal Sr 13 Al 22 Si 10 O 66 :Eu 2+ crystals, which exhibits strong blue PeL and can last more than 200 h. The PeL can be charged by the full wavelengths located in AM 1.5G due to the broad distribution of traps in the crystal structure. The PeL is clearly observed by the naked eye even after 24 h upon sunlight irradiation irrespective of the weather, and the photoluminescence intensity only decreased ∼3.3% after storing in water for 365 d. We demonstrate its potential application for thermal and stress responsive display as well as long-term continuous security indication upon sunlight irradiation, which not only save vast energy and reduce environment pollution, but also are appropriate for outdoor usage.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICS EXPRESS
·
2023
·Vol. 31
·期 6
·10191-10200
·
IF 3.8
Peng Wang,Ying Wang,Wei Guan,Hongzhou Dong,Lina Sui,Zhixing Gan,Zhixing Gan,Lifeng Dong,Lifeng Dong,Liyan Yu,Liyan Yu
Mn2+ doped lead-free double perovskites are emerging afterglow materials that can avoid the usage of rare earth ions. However, the regulation of the afterglow time is still a challenge. In this work, the Mn doped Cs2Na0.2Ag0.8InCl6 crystals with afterglow emission at about 600 nm are synthesized by a solvothermal method. Then, the Mn2+ doped double perovskite crystals are crushed into different sizes. As the size decreases from 1.7 mm to 0.075 mm, the afterglow time decreases from 2070 s to 196 s. Steady-state photoluminescence (PL) spectra, time resolved PL, thermoluminescence (TL) reveal the afterglow time monotonously decreases due to the enhanced nonradiative surface trapping. The modulation on afterglow time will greatly promote their applications in various fields, such as bioimaging, sensing, encryption, and anti-counterfeiting. As a proof of concept, dynamic display of information is realized based on different afterglow times.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
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
·
系统化学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wei Tang,Chuandong Zuo,Chaoyang Ma,Yuzhen Wang,Yingkui Li,Xuanyi Yuan,Enge Wang,Zicheng Wen,Yongge Cao
Inorganic photochromic materials have been identified as attractive possibilities in many photonic applications due to their outstanding thermal stability and eminent fatigue resistance. However, the relatively low photochromic contrast of inorganic photochromic materials restricts their further development. A novel method for achieving high photochromic performance is presented in this paper through volatilization element selection, high temperature sintered and low-valence ion doping. The obtained Ba(Zr 0.16 Mg 0.28 Ta 0.56 )O 3 ceramics exhibits an ultra-high photochromic contrast of 62.1% with a fast response time of 3 s upon alternate 365 nm illumination and 350 °C thermal stimulus (or 450 nm illumination), which presents the best performance among the inorganic photochromic materials. Benefiting from these excellent properties, Ba(Zr 0.16 Mg 0.28 Ta 0.56 )O 3 is the pioneer inorganic photochromic ceramics to support real-time handwriting and photobleaching information display. Moreover, due to the perfect overlap between the absorption band of Ba(Zr 0.16 Mg 0.28 Ta 0.56 )O 3 :0.05%Pr 3+ after 365 nm illumination and the excitation/emission peak of Pr 3+ , a large luminescence modulation of 92.5% is achieved, which reveals the great potential of Ba(Zr 0.16 Mg 0.28 Ta 0.56 )O 3 :0.05%Pr 3+ in dual-mode optical information storage. This work is expected to provide a significant guidance for the design of high performance inorganic photochromic materials and promote the applications in optical information storage.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 25
·2300615
·
IF 29.4
Shuxin Wei,Wei Lu,Huihui Shi,Shuangshuang Wu,Xiaoxia Le,Guangqiang Yin,Qingquan Liu,Tao Chen
Intelligent rewritable display systems have been long expected to reduce the heavy consumption of single-use or transient devices in the age of Internet-of-Things. However, it remains challenging to construct such systems with integrated functionality of remote control, rapid activation, multicolor and multimode display. Herein, by learning from the unique multilayer arrangement of chromatophores in chameleon skins, a promising kind of rewritable hydrogel multicolor systems is presented that can combine the merits of near-infrared (NIR) light-writing and projecting modes for on-demand information display. Specifically, the systems have typical multilayer layout consisting of poly(dimethylsiloxane) (PDMS)-sealed carbon nanotubes (CNTs) film as photothermal control unit and embedded fluorescent hydrogels as multicolor display unit, in which thermoresponsive hydrogel is constrained within non-responsive hydrogel. Such rational structure design results in the establishment of one promising display mechanism via the cascading “light trigger–heat generation–fluorescence output” process. On this basis, rapid and reversible hand-written display of arbitrary information is achieved within 5 s. Also, sustainable light-projecting display of predesigned multicolor patterns is demonstrated due to the multilayer design that ensures easy patterning of photothermal control or hydrogel display layer. This study brings functional-integrated merits for novel rewritable display systems and open new possibility to construct high-end products for information display/transmission.
研究领域:
材料科学
·
光电技术
·
显示技术
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Pan Li,Yi Yu,Jiayin Zhou,Shuxin Wei,Junyi Han,Xuke Li,Meng Wei,Tao Chen,Wei Lu
With the growing demand for dynamic pattern display, stimulus-responsive room-temperature phosphorescence (RTP) materials are highly desirable. However, achieving tunable responsive phosphorescence and excellent remodelability in such materials remains challenging due to their intricate photophysical processes. Herein, a dynamic hydrogen bonding strategy is leveraged to develop stimulus-responsive RTP films with shape malleability by incorporating naphthylamide-grafted polydimethylsiloxane into the polyacrylic acid (PAA) matrix. The incompatibility between the polydimethylsiloxane with different chain lengths and the PAA network leads to a controllable phase-separated structure, enabling the regulation of phosphorescence performance of the films. Notably, the dissociation of hydrogen bonds between polymer networks upon exposure to high humidity or increased temperature imparts the films with excellent stimuli-responsive phosphorescence. Particularly, the difference in hydrophobic siloxane chains affects luminescence color-changing rates under the trigger of humidity. Moreover, the reversibility of the hydrogen bond allows for luminescent rewritability through an alternating water diffusion/evaporation process. Impressively, the shape malleability of the films is achieved without compromising their phosphorescence behavior owing to dynamic hydrogen bonding. Ultimately, a shape-remodeling intelligent platform with rewritability is demonstrated to dynamically display information. This study provides a reliable approach to designing stimulus-responsive RTP materials through dynamic interaction and expands their applications in environmentally friendly pattern display.
研究领域:
材料化学
·
高分子科学
·
光物理
·
智能材料
·
功能材料
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软物质物理
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纳米光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2019
·
IF 0
Chen Yu Li,Si Yu Zheng,Cong Du,Jun Ling,Chao Nan Zhu,Yan Jie Wang,Zi Liang Wu,Qiang Zheng
Fluorescent hydrogels have promising applications in biomedical and engineering fields such as information display and flexible electronics, which usually suffer from poor mechanical properties. Herein, we report a facile strategy to fabricate nanocomposite hydrogels with high toughness and strong fluorescence by soaking poly(methylacrylic acid) (PMAAc) hydrogels in a carbon dot (CD) suspension and then re-equilibrating in water. The equilibrated hydrogels exhibited strong fluorescence because of CDs trapped inside the gel matrix due to the formation of hydrogen bonds between the amino group of CDs and carboxylic group of PMAAc. When the CD suspensions had an appropriate concentration, the mechanical properties of hydrogels were greatly enhanced; the tensile breaking stress and Young’s modulus can reach high values up to 5.8 and 158 MPa, respectively. We revealed that the mechanical enhancement of hydrogels mainly originated from the residual ethylenediamine in CD suspension, which formed strong hydrogen bonds with the gel matrix. Since the fluorescence of CD can be quenched by ferric ions, patterning the fluorescent hydrogel was realized by site-specific diffusion of ferric ions through a silhouetted mask to the underneath CD-composited hydrogel sheet. This kind of tough and fluorescent hydrogel should find applications in diverse fields for chemical sensing, information display, etc.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
柔性电子
✓ 已验证
产品关联
DOI
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Zhiheng Zhou,Xinzhen Fan,Chuanzhuang Zhao
A critical challenge in multifunctional room-temperature phosphorescent (RTP) hydrogels is the balance between the persistent afterglow and the editable phosphorescent information. Inspired by the Hawaiian bobtail squid ( Euprymna scolopes ), which modulates bioluminescence through symbiotic bacterial storage and release, a biomimetic RTP hydrogel system is introduced that overcomes this limitation. The hydrogel, synthesized via polymerization of acrylic acid (AA) with diethylenetriamine (DETA), followed by Ca 2+ coordination with COO − in polyacrylic acid (PAA) chains, exhibits remarkable phosphorescence (afterglow > 6.5 s) and three synergistic functionalities: 1) Dynamic information re-editability via water erasing and salt printing for real-time information programming; 2) Thermomechanical responsiveness enabling reversible stiffness modulation and thermal concealment of photonic information; 3) Self-healing through dynamic hydrogen bonding, facilitating dynamic reconfiguration of luminescent patterns. This RTP hydrogel establishes a robust platform for the edition of information, which emphasizes the potential of bioinspired strategies for advancing intelligent materials in bioimaging, flexible displayers, and information encryption.
研究领域:
材料科学
·
生物光子学
·
智能材料
·
柔性电子学
·
信息安全加密
·
仿生工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yi Yu,Zelin Li,Wei Zhou,Wei Lu,Shuxin Wei,Tao Chen
Rewritable luminescent materials are attracting widespread attention for information storage and display as they can help to reduce environmental wastes caused by the abuse of single-use and transient systems. Nevertheless, since most reported systems are chemical-stimuli-responsive and single-stimuli-responsive, it remains challenging to achieve the rewritable and programmable display of multiple information in one single system, which is essential to enhance information richness and display intelligence. In this work, an ideal kind of multi-responsive soft luminescent display systems are reported, which consist of heat/humidity-responsive fluorescence-phosphorescence dual-emission film and stacked graphene assembly (SGA) film by using thin poly (dimethyl siloxane) (PDMS) as middle connecting layer. In such multilayer structure, the heat generated by electricity connection or light illumination of bottom SGA film can be instantly transferred across the middle PDMS layer to cause heat-triggered red-to-blue emission color change, or to evaporate water for blue-to-red emission color recovery. Owing to the “residual-free” nature of these electricity, light and water stimuli, multi-responsive rewritability is guaranteed to enable the reversible writing and complete erasure of various letter/pattern information. On this basis, robust electricity/light-heat-hygro multi-responsive soft luminescent display systems are demonstrated, in which diverse letter/pattern information could be facilely programmed to be successively displayed and then completely reset to enable another data writing/erasing cycle by sequential modulation of different environmental stimuli. This study brings programmable merit for rewritable luminescent display systems and is expected to inspire more intelligent ones.
研究领域:
材料科学
·
光电技术
·
信息显示技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 24
·2300191
·
IF 13.3
Shuangshuang Wu,Huihui Shi,Shuxin Wei,Hui Shang,Weiping Xie,Xipao Chen,Wei Lu,Tao Chen
Utilization of rewritable luminescent materials for secure information storage and delivery has long been envisaged to reduce the cost and environmental wastes. However, it remains challenging to realize a temporally/spatially controlled display of the written information, which is crucial for secure information encryption. Here, inspired by bioelectricity-triggered skin pattern switching in cephalopods, an ideal rewritable system consisting of conductive graphene film and carbon dots (CDs) gel with blue-to-red fluorescence-color changes via water-triggered CDs aggregation and re-dispersion is presented. Its rewritability is guaranteed by using water ink to write on the CDs-gel and employing Joule heat of graphene film to evaporate water. Due to the highly controlled electrical stimulus, temporally/spatially controlled display is achieved, enabling on-demand delivery and duration time regulation of the written information. Furthermore, new-concept environment-interactive rewritable system is obtained by integrating sensitive acoustic/optical sensors and multichannel electronic time-delay devices. This work opens unprecedented avenues of rewritable systems and expands potential uses for information encryption/delivery.
研究领域:
材料科学
·
纳米技术
·
光电技术
·
信息安全
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Fantao Meng,Zhenzhi Wang,Shufen Zhang,Benzhi Ju,Bingtao Tang
Artificial photonic composites can exhibit the structural colors of embedded colloidal arrays and the functionality of polymeric matrix, making them suitable for emerging applications, such as display, sensing, and information security. However, their ability to integrate flexibility, color visibility and stimulus-responsive macroscopic change has not been adequately harnessed. In this study, a self-supporting photonic composite film is constructed by incorporating isotropically arranged polysulfide nanoparticles (PSNs) into polyethylene glycol diacrylate and butyl acrylate copolymers. The inherent light-absorbing properties and high refractive index of PSNs impart the photonic composites with high structural color visibility. Furthermore, the flexible copolymer network enables sustainable optical capability of photonic pattern during deformation. Due to its unique hydrophobic and hydrophilic structures, tunable optical path control can be achieved through solvent-induced microphase separation and inverse transparency changes under thermal stimulation, resulting in self-encryption and decryption. The function of switching desired stimuli into visualized optical signals allows flexible photonic composites to present great prospects in smart materials for dynamic memory devices.
研究领域:
材料科学
·
光学
·
纳米技术
·
聚合物科学
·
智能材料
✓ 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）