Materials Research Express
·
2016
·Vol. 3
·期 11
·115701
·
IF 0.968
Si Chen,Yining Chen,Xiaoqian Tong,Bozhen Wu,Meng Ma,Yanqin Shi,Xu Wang
A room temperature optical image storage device based on a novel kind of chiral azobenzene liquid crystal compound (Azo-CC) dopant was reported in this paper, which could realize room temperature photocatalytic phase transition when doping in host liquid crystal E7. With a comparation of the referential achiral compound (Azo-ACC), the chemical structure, liquid crystalline and photoresponsive properties of the compounds were characterized by 1H-NMR, POM and UV–vis, respectively. The result showed that the compound with chiral group (Azo-CC) exhibited better photoresponsive properties than the referential achiral compound (Azo-ACC), indicating the introduction of chiral group is the key factor to provide E7 host room temperature photosensitive properties, which could not only made the liquid crystal molecular reoriented but also could change the whole nematic host liquid crystal to helical-twisted matrix. In addition, to understand the optical-switching behavior into detail, the photoisomerization dynamics of the systems o was also analyzed.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Haijie Guo,Lili Liu,Lei Wang,Qiufeng Shi,Jianwei Qiao,Cai'e Cui,Ping Huang,Yuhua Wang
Optical information storage technology offers several advantages, including cost-effectiveness, multidimensional storage, and rewritable capability. Consequently, it has become increasingly popular for optical storage media. Herein, a novel optical information storage material Na 2 CaGe 2 O 6 :Bi 3+ (NCGO:Bi 3+ ) is developed using a non-equivalent substitution strategy, which exhibits photochromic (PC) and ultraviolet persistent luminescence (UV PersL) properties. NCGO:Bi 3+ demonstrates excellent white-to-brown PC performance under 254 nm light irradiation. The brown phosphor can be effectively bleached using 425 nm light or thermal stimulation, demonstrating excellent reversibility over multiple cycles. Additionally, the phosphor displays UV PersL characteristics. The representative sample NCGO:0.001Bi 3+ with a duration time exceeding 10 h after 254 nm light excitation, peaking at 358 nm. Simultaneously, due to the electrons captured by deep traps can be released via low-energy light excitation, the sample also exhibits photostimulated PersL characteristics. Specifically, oxygen vacancies (V O ) are identified the primarily responsible for the observed PC and PersL phenomena by X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) analyses. Overall, this work indicates that the combination of 254 nm light-induced PC and PersL in a single material has potential for designing advanced luminescent materials for the application of 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
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Anjie Wang,Anjun Huang,Heping Zhao,Yue Liu,Yuxia Luo,Dacheng Zhou,Zhiguo Song,Jianbei Qiu,Cherkasova Tatiana,Zhengwen Yang
Transparent glass is a promising candidate for optical storage media due to its large capacity and high stability advantages. Previously reported optical storage glass systems meet various problems, such as high manufacturing costs, low security levels, etc. Herein, a kind of copper-contained borate glass was designed and fabricated, emitting tunable broadband upon various ultraviolet light excitations. By alternating 360 nm laser (10.7 W/cm 2 ) irradiation for 15 s and thermal treatment at 400 ℃ for 2 h, the emission intensity of the glass can be reversibly regulated, which is associated with the variation of oxidation states of the copper element. Relying on their efficient reversible luminescence modulation behaviors, the potential application of this glass as an optical storage and encryption media is developed, exhibiting the high performances of repeatable writing and erasing, dual mode readout, high-level safety, and good writing resolution for the Cu-doped borate glass.
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
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 7
·2455-2463
·
IF 7.393
Hongjing Wen,Xianzhi Zeng,Xiaoxuan Xu,Wanyi Li,Fei Xie,Zhong Xiong,Shichao Song,Bin Wang,Xiangping Li,Yaoyu Cao
In this work, based on a pH-responsive hydrogel, we report on a reversible data encryption–decryption technique in which the pH channel is employed for data manipulation. Upon alkali or acid stimulation, the hydrogel exhibits a network expansion or shrinkage in response to the pH variations. In particular, pre-doping the hydrogel with silver ions, we demonstrate that data input can be encoded in the hydrogel platform through the direct writing and patterning of silver nanodots. By this means, the scattering signals from the patterned nanodot pixels are converted to the binarized data. Meanwhile, we show the threshold behaviour of the hydrogel system in which dynamic switching of the encoded plasmonic pattern to the optically resolvable/irresolvable state is viable only at finite pH values. By delicately matching pixel spacings of the encoded pattern and the diffraction limit of the deciphering microscopic system, reversible sub-diffraction limit data encryption is achieved by selectively imposing acid and alkali stimulations. The suggested strategy offers a potential solution for optical storage, multiplexed data manipulation, and optical data security.
研究领域:
材料科学
·
光学工程
·
化学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Zhou Li,Biao Xia,Tengfei Lin,Min Gao,Chunlin Zhao,Xiao Wu,Cong Lin,Siwu Wu
Optical information encryption is closely related to information security, and smart hydrogels with tunable optical properties under external stimuli have received much attention as optical storage materials. However, it is still challenging to achieve complex information camouflage and large-capacity information storage in hydrogel systems. Herein, a hybrid encoding strategy afforded by an aggregation-induced emission (AIE) fluorescent hydrogel with multi-stimuli responsiveness is pioneered as a feasible alternative for multiple camouflage strategies. More specifically, the photoluminescence intensity of a system can be independently or mutually tuned by specific stimuli, including solvent (DMSO/H2O), pH (NaOH/HCl), and metal ions (Fe3+/EDTA2–), leading to the precise protection or decoding of encrypted information. That is, only the correct stimulus sequence can unlock the stored real information, thus enabling the system with the functionality of multilayer encryption and on-demand decryption of information. We envisage that the present strategy of multiple information carrying and showcasing in AIE hydrogels through stimulation sequence regulation exhibits great potential for secure information writing and anticounterfeit encryption.
研究领域:
材料科学
·
信息学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Rongbo Ma,Xinyong Gong,Chaoyong Deng,Weichao Huang
Multifunctional luminescence material with photochromism and controllable luminescence modulation properties have attracted increasing interest, enabling innovative applications such as optical information storage and anti-counterfeiting. Herein, the Bi 3 + single-doped BaSrY 4 O 8 photochromic phosphor was prepared by the solid-state reaction method, and its crystal structure and optical properties were systematically investigated. Notably, this phosphor demonstrates reversible photochromic properties, accompanied by a rapid transition in body color from white to brown when exposed to 365 nm near-UV light, and considerable recovery capacity upon blue light (450 nm) irradiation. By the combination of photoluminescence and reversible photochromism, the application of optical memory and anti-counterfeiting is developed that depends on the different light stimulations. Moreover, the BaSrY 4 O 8 : Bi 3+ phosphor exhibits an intense blue broadband emission centered at 423 nm and good thermal stability (83 %@423 K). These results indicate that BaSrY 4 O 8 : Bi 3+ phosphor is a promising multifunctional luminescence material for applications in optical storage and anti-counterfeiting.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 16
·21735-21741
·
IF 5.6
Meng Liu,Jie Shao,Xiyang Li,Yu Guo,Chunxiao Lu,Shanjun Ke,Haiqin Sun,Qiwei Zhang
Photochromic (PC) materials with persistent luminescent (PersL) behaviors show potential applications in advanced anti-counterfeiting and optical storage fields. However, it is difficult to simultaneously achieve PC and PersL properties in a single host, due to their different positions of defect energy levels between conduction band and valence band. In this work, a new strategy is proposed to obtain two features by constructing two-phase composites of photochromic BaMgSiO 4 :Eu 2+ and long afterglow Sr 2 MgSi 2 O 7 :Eu 2+ /Dy 3+ materials. The optimized composite sample not only exhibited the reversible white-purple color change by alternating 365 nm and 520 nm light irradiation, but also showed the blue afterglow luminescence for more than 20 min. The designed anti-counterfeiting component based on the composite sample provides a higher-level security anti-counterfeiting than conventional PC materials. These results may facilitate more innovative designs for future dynamic anti-counterfeiting and optical storage applications.
研究领域:
材料科学
·
光学材料
·
防伪技术
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2014
·
IF 1.09
Yuxuan Zhang,Qing Zhang,Songhao Pei,Yongpeng Wang,Haibo Zhang,Zhenhua Jiang
To improve the stability of photoinduced birefringence, a series of azobenzene-functionalized poly(ether sulfone)s (azo-PES) with high glass transition temperature (Tg) were successfully synthesized via Ullmann coupling between PES with bromine side groups and azo compound 4-((4-methoxyphenyl)diazenyl)phenol. Their chemical structures and properties were characterized by means of ultraviolet–visible and proton nuclear magnetic resonance spectroscopies. The results of differential scanning calorimetry and thermogravimetric analysis suggested that the polymers had high Tgs and good thermal stability. Upon irradiation with a 532 nm neodymium-doped yttrium aluminium garnet (Nd:YAG) laser beam, these azo polymers presented large photoinduced birefringence with a remnant value up to 94%, indicating good stability of the photoinduced orientation. Furthermore, multiple writing/erasing experiments indicate that the azo polymers have potential applications in reversible optical storage.
研究领域:
材料科学
·
高分子化学
✓ 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
Inorganic Chemistry Frontiers
·
2019
·Vol. 6
·期 10
·2756-2766
·
IF 5.934
Fengming Yang,Bing Jia,Tong Wei,Chuanzhen Zhao,Qingjun Zhou,Zepeng Li,Mingrun Du,Mingchao Wang,Yiyang Liu,Chanying Xie
Reversible upconversion (UC) luminescence modulation by external stimuli (i.e. electric field, magnetic field, and light irradiation) is extremely attractive for applications in a broad range of fields, such as photoswitches, high-density optical data storage devices, and optical sensing. In this work, one kind of novel phosphor, Er3+-doped Bi4Ti3O12 (Bi4−xErxTi3O12) ceramics, prepared by a conventional solid-state reaction approach, is reported which exhibits both bright UC luminescence and a remarkable photochromic (PC) effect. The UC luminescence, PC effect, and the coupling between UC and PC performances were investigated in detail. It is found that the UC luminescence could be readily modulated by alternating visible light irradiation and a thermal stimulus, and a large reversible luminescence regulation has been achieved based on the PC reaction. Meanwhile, the modulation of UC luminescence was shown to tightly depend on the irradiation time and thermal treatment processes. In addition, the coloration and decoloration processes also exhibited good fatigue resistance. The mechanisms related to the UC emissions, PC processes, and luminescence modulation are also discussed. These results indicated that Bi4−xErxTi3O12 samples could be potentially utilized as a kind of optical data storage material.
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
Advanced Optical Materials
·
2025
·
IF 7.2
Zhiqiang Wang,Chenduan Chen,Zengling Li,Ke Sun,Jianrong Qiu,Dezhi Tan
Mixed-halide perovskite nanostructures possess widely-tunable optical and electronic properties that are desirable for applications in optics and optoelectronics, such as photodetectors, micro-LEDs, photovoltaics and lasers. Photoinducing phase segregation often occur on these nanostructures with halide ions, e.g., iodide ions, migrating away from the original mixed-halide crystal lattice, which impairs their photoluminescence (PL) properties and impedes the integrated applications. Herein, significant photoinduced PL enhancement is reported with a PL shift from green to red on the Br-I halides-containing perovskite nanowires (NWs). This is proposed to be caused by the formation of Br-I mixed phase due to the migration and incorporation of iodide ions into the deficient-rich CsPbBr 3 lattice within the NWs. It is demonstrated that this principle is general to regulate the PL on NWs with various halide compositions. Optoelectronic applications in waveguiding and short-time optical storage are exploited experimentally. This work provides new insights into the photoinduced PL modulation, which would advance and expand the optoelectronic applications.
研究领域:
材料科学
·
纳米光子学
·
半导体物理
·
光电功能材料
·
凝聚态物理
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Haisheng Chen,Wenwen Chen,Jiaying Shen,Xiaona Du,Tianhong Zhou,Zhengang Dong,Taiyu Bian,Jiaxing Guo,Yiyang Wen,Yuanlin Liang,Zhenping Wu,Yang Zhang
Developing smart luminescent materials with desirable and tunable characteristics has always been an overriding priority of fluorescence technology. However, huge challenges encompass the single functionality of the luminescent materials and the traditional chemical synthetic techniques with rigorously controlling over the miscellaneous experimental conditions and variables. Herein, the lanthanide-doped bismuth-layered ferroelectric (Na 0.5 Bi 0.5 ) 0.96 Er 0.04 Bi 2 Nb 2 O 9.02 has been prepared to be utilized as a platform that not only serves the in-situ and reversible tailoring of the upconverted emission via physical methods, but also enable the versatile functionalities such as photomemory and multi-modal temperature sensing. High luminescent contrast that can reach up to 83.7 % before and after the 405 nm irradiation has been realized on the basis of the photochromic phenomenon of the as-prepared (Na 0.5 Bi 0.5 ) 0.96 Er 0.04 Bi 2 Nb 2 O 9.02 sample, and the fundamental application in the photomemory has been exhibited. Moreover, the performances of triple-mode thermometry built on the fluorescent intensity ratio techniques ( 2 H 11/2 / 4 S 3/2 and 4 S 3/2 / 4 F 9/2 ) as well as the lifetime of the 4 S 3/2 excited state of the Er 3+ ion have been investigated in carefulness, with the maximal relative sensitivities of 1.22 % K −1 at 300 K, 0.92 % K −1 at 510 K, and 0.18 % K −1 at 450 K, respectively. Our results provide significant insights into the methodology of physically modulating the upconversion luminescence, and offer a glamorous pathway for multifunctional high-end applications.
研究领域:
材料科学
·
光学工程
·
功能材料
·
纳米光子学
·
传感技术
·
固态物理
·
智能材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）