ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jingjing Gao,Yanrong He,Xiaoyang Cong,Huijie Yi,Jinbao Guo
The rapid advancements in information technology require new information storage and display materials. However, the development of on-demand information storage systems with multiple modes remains a significant challenge. As a pioneering approach, this study designed an integrated visual and haptic information storage and display using a reconfigurable fluorescent liquid crystal elastomer (FLCE) with dynamic covalent bonds. The FLCEs were fabricated in two steps of amine-acrylate aza-Michael addition and photopolymerization, and they simultaneously exhibited phototunable fluorescence caused by the reversible Z/E photoisomerization of the chromophores and a reprogrammable shape owing to the catalyst-free transesterification. In addition, we established various information storage and display modes featuring the characteristics of reversibly photoswitchable fluorescence, shape memory, and thermally reconfigurable shape with a reconfigurable FLCE system. Moreover, a strategy to display the information by incorporating both visual and haptic feedback is implemented for fulfilling the needs of the visually impaired and related users. Such reconfigurable FLCE systems will aid in the development of on-demand information storage, display, and protection devices.
研究领域:
材料科学
·
信息存储技术
·
光学材料
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2021
·
IF 3.08
Xiaohui Lai,Zhiyong Fang,Jian Zhang,Bo Wang,Wenfeng Zhu,Rui Zhang
A novel BaLu 2 Al 2 Ga 2 SiO 12 :Ce 3+ persistent phosphor was designed and synthesized through hetero-valence substituting Ba 2+ -Si 4+ ion pair for Lu 3+ -Al 3+ one in the Lu 3 Al 3 Ga 2 O 12 . XRD and Rietveld refinement results confirm the garnet typed crystal structure. SEM information shows that the constituent elements are uniformly distributed on the irregular particles. Under 360 or 430 nm excitation, the samples exhibit broad emission bands peaking at 510 nm. The luminescence intensity reaches to the maximum at 6 mol% Ce 3+ doping content, and an internal quantum efficiency of 51.2% is achieved. The concentration quenching between Ce 3+ ions is mainly originated from exchange interaction. Moreover, the phosphors exhibit bright cyan afterglow for minutes after removing the blue-light excitation source. The persistent luminescence decay process is studied by thermoluminescence spectra. The persistent luminescence mechanism and optical information writing and reading process are also discussed to explore the application in optical information storage.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Hexuan Wang,Yunrui Xie,Xintong Huo,Yaolin Hu,Yuqi Sheng,Peng Lv,Shuang Wang,Haina Qi,Wensheng Yu,Xiangting Dong
With the explosive growth of mass data and the increasing importance of information security, storage mediums are continuously explored to meet different anticounterfeiting and information storage encryption complex scenario applications. Here, Eu(TTA)3(TPPO)2 is combined with two polymer matrices of polycaprolactone (PCL) and thermoplastic polyurethane (TPU) to develop a shape-memory red fluorescent Eu(TTA)3(TPPO)2/PCL/TPU fibrous membrane with excellent mechanical strength and hydrophobicity using facile electrospinning. The Eu(TTA)3(TPPO)2 fibrous membrane can be utilized as an information storage medium; as a case study, invisible blue fluorescent printing ink easily purchased on the market is used as the “ink”, and the information patterns are printed on the membrane surface by using a customized mold such as QR codes. By utilizing shape-memory function and fluorescence characteristics of fibrous membranes, the original correct information can be readable only upon heating and illuminating by UV light, realizing information storage and dual-mode encryption. Meanwhile, a high integration of red-blue dual-color fluorescence and shape memory dual-mode anticounterfeiting with shape memory and fluorescence dual-mode encryption is achieved to realize concurrent information storage and dual-mode anticounterfeiting encryption. This work provides a low-cost, feasible, and effective strategy to develop high tensile strength, information storage, and multiple anticounterfeiting encryption materials with wide applications.
研究领域:
材料科学
·
光学
·
信息安全
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2022
·
IF 12.545
Qing Yu Liu,Zhen Qi Bu,Min Xia Quan,Ying Wu,Xuezhi Ding,Li Qiu Xia,Jiao Yang Lu,Wei Tao Huang
Inspired by information processing and communication in nature based on molecular recognition and structural diversity, ongoing efforts aim to development of artificial molecular or nano-systems for sensing, logic computing, and even data storage and safety. However, due to their preparation/functionalization shortcomings (laborious and time-consuming), poor flexibility and compatibility, and limited paradigm, it is still a big challenge whether simple molecules can be used to achieve comprehensive and universal applications from sensing to information storage and protection. Herein, we for the first time demonstrated a molecular paradigm—computer-like “basic input output system (BIOS)” which can realize “plug-and-play” sensing, information encoding, molecular cryptography, and steganography based on a simple artificial molecule (p-nitrophenol, PNP). Based on its molecular recognition and inherent chemical identities, PNP was utilized for colorimetric detection of multiple metal ions (Hg 2+ , Fe 3+ , Al 3+ , Cr 3+ ) and distinguishing their valence (like Cr 3+ /Cr 6+ , Fe 3+ /Fe 2+ ). Interestingly, PNP can achieve the “plug-and-play” fluorescent expansion of detection channels by directly mixing with fluorescent molecules, indicating that PNP molecule can be served as a molecular BIOS with flexibility and compatibility. Impressively, the selectivity embedded in PNP-based BIOS sensing system can be developed as molecular-level double cryptographic steganography to encode, encrypt and hide specific information (like the content of classical literature). This research not only provides a basic idea for building a molecular paradigm with “plug-and-play” flexibility and compatibility, but also provides ideas for the use of molecular sensing and informatization to open up the digitalization of the molecular world.
研究领域:
化学
·
信息科学
·
分子生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 12
·6922-6931
·
IF 3.502
Puxian Xiong,Chibin Zheng,Mingying Peng,Zhihao Zhou,Feifei Xu,Kexin Qin,Yiyu Hong,Zhijun Ma
Till now, many doped persistent luminescence (PersL) phosphors have been investigated and found various applications in such as bioimaging, photocatalysis and information storage, but introducing PersL emitters into a proper host is mostly complex. In this research, a self-activated PersL phosphor Ba 2 Zr 2 Si 3 O 12 (BZSO) is prepared by solid state reaction. By adding NH 4 Cl, the self-activated PersL intensity is evidently enhanced. The trap depths and concentrations are examined by thermoluminescence spectra. Meanwhile, Bi 3+ ions are introduced into BZSO and show wide band photoluminescence (PL) from 300 to 600 nm. Moreover, the PL of Bi 3+ is tunable under excitation by 265-350 nm lights. Furthermore, as a proof-of-concept design, we designed a patterned quick response (QR) code based on the self-activated PersL of BZSO, and the information of “South China University of Technology (SCUT)” can be read out by the code scanning technology. Bi 3+ -doped BZSO phosphors are suggested to provide potential applications in information storage by its self-activated PersL, and to excite researchers to study the tunable PL in Bi 3+ -doped phosphor.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2022
·
IF 5.122
Chen Wang,Qing Yan,Sheng Wang,Derong Cao
A novel donor-acceptor Stenhouse adducts (DASAs) derivative ( DASA-IDN ) was constructed by introducing phenanthroimidazole (PI), tetraphenylethylene (TPE), triphenylamine (TPA) moieties into the DASAs molecular system. The multi-stimuli response process, photochromic and fluorescence properties of DASA-IDN were investigated. When irradiated with visible light, the color of DASA-IDN solution fade quickly and the fluorescence lighted up rapidly. Heating under darkroom could restore it to the initial state. Moreover, solid film of DASA-IDN have been achieved and utilized for information storage. Remarkably, DASA-IDN exhibited versatile switching behavior in response to acid, base and light, turning it into an efficient multi-stimuli responsive molecule.
研究领域:
有机化学
·
材料科学
·
光化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yongsheng Sun,Xinquan Zhou,Zhenjie Lun,Kai Han,Puxian Xiong,Zhiguo Xia
Multi-mode luminescence tuning through in situ crystallization of topological glass holds significance for photonics applications. Here, NaAlSiO 4 :Eu 2+ -based glass ceramics are presented as stable persistent luminescence (PersL) materials by controlling the phase transformation in Eu 2+ doped Na 2 O-Al 2 O 3 -SiO 2 from amorphous glass to crystalline nepheline phase. X-ray and UV excited PersL colors from blue to yellow are realized by adjusting the crystallization duration time, and trap statuses reveal the dynamic PersL process with a trap redeployment from 0.83 to 1.09 eV during the transformation. Optical information storage model is constructed with a structure of stacked emitting layers to enhance storage capacity. X-ray excited luminescence time-lapse imaging is further demonstrated with optical memory longer than 5 days. These findings advance the development of superior stable PersL glass ceramics and offer optical manipulation tactics for multi-mode optical information storage applications.
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
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Ying Lv,Wuqiang Li,Chaofeng Li,Yu Liu,Cunjian Lin,Zhongyuan Li,Shihai You
The commercial blue persistent luminescent (PersL) phosphor (CaAl2O4:Eu2+,Nd3+) is renowned for its exceptional PersL duration, but it is hampered by its poor chemical stability. There is an urgent need to develop blue PersL phosphors that can combine the excellent PersL property with robust stability. In this work, we report on a series of highly stable Ce3+-doped oxynitride PersL phosphors. Notably, BaSi3Al3O4N5:Ce3+ has been identified to contain two distinct types of defects in the host: one associated with photoluminescence (PL) and the other with electron trapping and detrapping dynamics. These intrinsic defects have been systematically investigated and confirmed by analyzing both PL and PersL spectra, which could be generated by nitrogen deficiency and the existing oxygen vacancy in BaSi3Al3O4N5. BaSi3Al3O4N5:Ce3+ has a widely distributed trap from 0.21 to 1.02 eV, with a peak at 0.63 eV, as determined by the initial rise method. BaSi3Al3O4N5:Ce3+ exhibits not only excellent water-resistance stability but also superior heat-resistant stability. Leveraging its widely distributed traps and great chemical stability, we have successfully demonstrated the optical information storage ability of BaSi3Al3O4N5:Ce3+ by using a gradual optical writing method. This comprehensive study provides valuable insights into the development of stable oxynitride PersL phosphors for potential applications in optoelectronic devices.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2022
·
IF 11.307
Qijun Li,Shuai Meng,Yuchen Li,Dengke Cheng,Hailing Gu,Zhenxiao Zhao,Zikang Tang,Jing Tan,Songnan Qu
Stimuli-responsive phosphorescence materials with dynamic color-changing properties are highly promising for advanced information security. Herein, we demonstrate a novel strategy that effectively induces tunable dynamic phosphorescence color from carbon dots (CDs) on papers via surface ionization engineering for multimode encryption and information storage. Alkali-induced phenolic hydroxyl ionization on CDs can boost intersystem crossing rates , while surface-ionized groups with negative charges significantly passivate the surface defects and reduce non-radiative transitions, which can activate surface state-related blue phosphorescence emission. Combined with the carbon core state-related yellow-green phosphorescence, excitation/time-dependent phosphorescence color-changing from yellow-green to blue are realized from alkali (Na 2 CO 3 ) treated CDs on paper. Furthermore, benefiting from the transition from NaHCO 3 to Na 2 CO 3 under thermal treatment, dynamic color-changing phosphorescence can also be activated by thermally stimulating NaHCO 3 -treated CDs on paper. Finally, multi-stimuli (alkali or thermal) and multi-modal dynamic phosphorescent colors from a single CDs system are realized for the first time. Based on these unique features, multimode encryption and smart 3D codes with anti-counterfeiting and monitoring functions for medicine during transport or storage are demonstrated by combining an inkjet printing technique using CD inks.
研究领域:
材料科学
·
光学
·
信息安全
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Feng Gao,Qing Pang,Dangli Gao,Chaoyang Jia,Hong Xin,Yong Pan,Yuhua Wang,Sining Yun
Photostimulable luminescence (PSL) nanophosphors, which exhibit superior features including controllable energy storage and efficient photon release upon light stimulation, are desirable for optical signal storage. However, trap tuning of the storage phosphor remains a great challenge. Herein, the PSL of Zn2GeO4:Mn2+ nanophosphors is enhanced via creating deep traps through nonequivalent Pr3+ doping. The possible enhanced mechanisms are analyzed combined with doping models using the first-principles theory. A mechanism is proposed based on changing the coordination environment of Mn2+, creating deep traps and tuning the band gap structure, and thus providing the chance for electrons’ photoionization and PSL generation. As a result, the prepared nanophosphors demonstrate the superior functionalities for optical signal storage. This work not only offers an insight into defect engineering through doping strategies for developing PSL materials but also supplies a good candidate for optical information storage.
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
International Journal of Applied Ceramic Technology
·
2023
·Vol. 20
·期 6
·3357-3364
·
IF 2.1
Chen Jiang,Rui Zhang,Lidan Han,Yanhui Chen
Persistent luminescence (PersL) phosphors are considered as promising candidates for the next generation of information storage medium. Mg 4 Ga 4 Ge 3 O 16 (MGG) is an electron trapping material which exhibits defect luminescence, and the luminescent properties are easily tuned via doping various activated ions. In this work, undoped and Mn 2+ /Pr 3+ /Tb 3+ single-doped MGG phosphors were synthesized via high temperature solid phase reactions. X-ray diffraction and scanning electron microscope results confirm that the activated ions tend to occupy Mg 2+ sites. Excited at 265 nm, the MGG host exhibits a defect emission band peaked at 450 nm. Red, pink and green emissions are observed in the Mn 2+ /Pr 3+ /Tb 3+ single-doped MGG samples, which are ascribed to the Mn 2+ : 4 T 1 (G) → 6 A 1 (S), Pr 3+ : 1 D 2 → 3 H 4 and Tb 3+ : 5 D 4 → 7 F 5 transitions, respectively. All the samples exhibit bright PersL for minutes after the cessation of excitation. The energy transfer, concentration quenching, luminescence decay and afterglow mechanisms are also discussed in detail. The phosphors exhibit efficient thermal and optical stimuli response, showing great potentials in the optical information storage.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Ying Lv,Ning Zhao,Chaofeng Li,Cunjian Lin,Shihai You
Efficient and stable persistent phosphors play a crucial role in the fields of energy storage, anti-counterfeiting, and biomedical fields. Here, we present an improved synthetic method for preparing a series of color-tunable LiYGeO 4 :Tb 3+ persistent phosphor. The increased Tb 3+ concentration in the improved method enhances the persistent luminescent intensity at 20 s by ∼2.96 times. This enhancement is due to the dual roles of Tb 3+ as both emitters and trap centers within LiYGeO 4 . By simply increasing the doping concentrations, the persistent color can be adjusted from blue to green. LiYGeO 4 :Tb 3+ exhibits no loss of persistent luminescent intensity even after exposure to water at 80 °C for 72 h, surpassing the commercial green persistent phosphor. Furthermore, information storage was successful demonstrated by using LiYGeO 4 :Tb 3+ with various doping concentrations. This study represents a significant advancement in optimizing the properties of persistent luminescent materials, where dopants simultaneously serve as emitters and trap centers.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）