CHEMICAL ENGINEERING JOURNAL
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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
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光学工程
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2022
·
IF 6.633
Min Gao,Jingfang Li,Diandong Xia,Lijun Jiang,Ning Peng,Sicong Zhao,Guangming Li
The development of advanced luminescent anti-counterfeiting materials with self-healing ability is still a challenging task. Herein, the security inks with reversible luminescent switching and self-healing properties were easily prepared by doping lanthanides complexes into self-healable poly (2-acrylamido-2-methyl-1-propanesulfonicacid) (PAMPSA) matrix. The security inks exhibited reversible luminescent “on–off” switching in response to “base-acid” vapors, it allowed themselves as good candidates for realizing reversible information decryption and encryption. The confidential information fabricated by security inks could not be identified under daylight and/or UV light, which could only be recognized after the treatment with NH 3 vapor in the presence of UV light. Importantly, the information can be further encrypted and decrypted by HCl vapor and NH 3 vapor, respectively, it can avoid the second leakage of confidential information as well as realize the repeated reading of confidential information. The rational designed multiple encryption strategies were also demonstrated to further improve anti-counterfeiting level. Remarkably, the security inks exhibited good self-healing ability to extend their service life and ensure durability, which is very important for their practical applications. In addition, the obtained inks exhibited excellent stability against UV irradiation, humidity, organic solvents, heating, and rubbing. The inks also exhibited good stability in ambient conditions and can be written on various substrates. The above results indicated that the as-prepared security inks have tremendous potential applications in advanced anti-counterfeiting.
研究领域:
材料科学
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化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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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.
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DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Jiamin Liu,Yuntao Ruan,Qiaoqi Qin,Yong Shen,Zhengliang Wang,Daibin Kuang,Long Jiang
Herein, we designed organic cations with multiple donor and acceptor sites of hydrogen bonds and reported reversible luminescence modulation in 0D manganese-based metal halides via water-driven in situ structural transformations with the above adaptive hydrogen-bonding cation. The non-fluorescent-to-fluorescent transition at human body temperature highlights their high sensitivity and environmental adaptability as promising candidates for advanced fluorescence-based sensing and anti-counterfeiting applications. Besides, the high photoluminescence quantum yield and great stability of fluorescent (BBD)MnBr4 provide a way to explore OIHMHs pumped by green light for white LEDs.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Maohao Yang,Wanyin Ge,Yao Guo,Jianxin Li,Yongxiang Li
With the continuous advancement of counterfeiting technologies, traditional static anti-counterfeiting systems have exhibited inherent security vulnerabilities, urgently necessitating the development of novel intelligent anti-counterfeiting materials with multi-stimulus responsive mechanisms. This study developed a solvent evaporation crystallization method to successfully synthesize a novel lead-free halide double perovskite (LHDPs) Cs 2 KInCl 6 : Sb 3+ , which exhibits multi-color intelligent luminescence. By precisely controlling humidity and temperature, Cs 2 KInCl 6 : Sb 3+ can undergo reversible luminescence transitions from "green → yellow (Cs 2 InCl 5 (H 2 O): Sb 3+ ) → green". The unique stimulus-responsive behavior originates from the material's high sensitivity to water molecule adsorption/desorption, making it applicable for information encryption systems. Density functional theory calculations reveal that Sb 3+ -doped introduces intermediate energy levels, reducing the bandgaps of Cs 2 InCl 5 (H 2 O), Cs 3 In 2 Cl 9 , and Cs 2 KInCl 6 , which enhances their light absorption and emission properties. Moreover, LHDPs Cs 2 KInCl 6 : Sb 3+ maintain 93 % of their initial luminescence intensity at high temperatures (403 K), demonstrating excellent thermal stability. This study elucidates the luminescence regulation mechanism of Sb 3+ -doped LHDPs and establishes a dynamic color switching model ("structural phase transition-optical response"), providing theoretical support for design next-generation smart anti-counterfeiting materials and developing of high-temperature stable luminescent devices.
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DOI
高影响因子
Advanced Materials Technologies
·
2021
·Vol. 6
·期 12
·2100654
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IF 7.848
Ze Wang,Yaqian Zhang,Xiaodong Liu,Yanxia Yu,Fucai Xu,Jing Ding,Xiaojuan Liang,Keqin Yang,Weidong Xiang
In this study, a simple low-temperature self-assembly strategy is used to synthesize the CsPbBr 3 /Cs 4 PbBr 6 nanocomposite with a relatively high photoluminescence quantum yield (PLQY, 72%) and product yield (87%). As expected, the nanocomposite exhibits good photoluminescence (PL) performance and stability. Further, 90% of the PLQY is maintained even when heating at 100 °C for 24 h, and almost no emission degradation is observed after storage in ethanol for 10 days. Furthermore, the prepared CsPbBr 3 /Cs 4 PbBr 6 nanocomposite exhibits the reversible luminescence phenomenon by simply applying the wetting and drying process. This abnormal phenomenon is due to the internal phase transformation of the CsPbBr 3 /Cs 4 PbBr 6 nanocomposite. The potential application of the nanocomposite in anti-counterfeiting has been demonstrated. This work facilitates the production and application of inorganic metal halide perovskite-based functional materials.
研究领域:
材料科学
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光学
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化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
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IF 5.6
Jiale Zhang,Chengyue Xin,Ming Ma,Wenjun Zhang,Zihan Chen,Ying Gao,Dan Wang
Conventional materials with single emission centers face limitations in emission tunability and anti-counterfeiting security. Thermochromic-induced reversible luminescence modulation offers an effective approach for multi-level optical encryption. In this work, we demonstrate an information‐encryption strategy based on a vacancy-ordered perovskite that undergoes reversible, delayed luminescence shifts. Blue-emitting Bi 3+ -doped Cs 2 ZrCl 6 crystals were synthesized via a facile precipitation method and exhibit dual emission centers under different excitations. Under 365 nm excitation, the Bi 3+ emission at 465 nm undergoes a thermochromic‐induced red shift to 500 nm upon annealing at 110–180 °C; this visibly distinct green state persists for seven days at room temperature and fully reverts to blue over ≈40 days. In contrast, the intrinsic Cs 2 ZrCl 6 self-trapped-exciton emission at 254 nm excitation remains constant, providing an internal reference for enhanced anti-counterfeiting security. Comprehensive photoluminescence and UV–Vis diffuse-reflectance analyses reveal that annealing modulates the band gap via Bi 3+ -induced intermediate states, thereby driving the reversible emission shift without altering crystal structure or oxidation states. By incorporating the Bi 3+ -doped Cs 2 ZrCl 6 powder into conventional screen-printing ink (5:1 mass ratio), we fabricate nearly invisible security patterns that switch from blue to green under 365 nm UV after heating and automatically recover, enabling multi-cycle thermal encryption. This study not only elucidates the band-gap–mediated mechanism of thermochromic luminescence in lead-free perovskites but also establishes a versatile platform for next-generation, reversible optical security and anti-counterfeiting applications.
研究领域:
材料科学
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光学物理
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纳米技术
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固态化学
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信息安全
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产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
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IF 7.3
G. Zheng,Y. Chen,T. Chang,C. Chen,S. Zhang,Y. Wang,Y. Gao,B. Zou,R. Zeng
Metal halide perovskites have attracted extensive attention due to their wide application in many fields such as solar cells, light-emitting diodes, and photodetectors , etc. Herein, we separately synthesize green-emitting TMAMnCl 3 and red-emitting TMA 2 MnCl 4 (TMA = tetramethylammonium chloride) single crystals by controlling the feeding ratios of MnCl 2 /TMACl precursors via a slow evaporation crystallization method, respectively. Further, thereversible luminescence switching between TMAMnCl 3 and TMA 2 MnCl 4 single crystals can be achieved by adding corresponding raw MnCl 2 or TMACl precursors due to the transformation of crystal structures. The structural differences between the different coordination environments are found to play a key role to the different optical properties of the two crystal structures. The light-emitting diodes devices prepared based on the two kinds of materials show excellent performance at different currents and voltages. Our research sheds light on controlling the structural transformation and luminescence switching of manganese-based organic–inorganic hybrid perovskites.
研究领域:
材料科学
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光电
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化学
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 39
·6910-6916
·
IF 3.756
Hanmei Fu,Chunli Jiang,Chunhua Luo,Hechun Lin,Hui Peng
Organic–inorganic manganese halide hybrids have attracted attention in the field of light-emitting diodes (LEDs) due to their simple preparation, environmental friendliness and tunable luminescence. Herein, two manganese halide hybrids, (C5H8N2)2MnCl4 and C5H8N2(MnCl2)xCly, are synthesized by adopting different ratios of 1-ethylimidazole and MnCl2. (C5H8N2)2MnCl4 and C5H8N2(MnCl2)xCly show strong green and red emission with photoluminescence quantum yields (PLQYs) of up to 79.77% and 83.33%, respectively, which is attributed to the different coordination environments of Mn2+. The reversible conversion between red and green emission of C5H8N2(MnCl2)xCly coming from its decomposition and recovery makes it an interesting fluorescent material. Their applications in fabrication of a white LED (WLED) and a tunable color LED by combining with a blue GaN LED illustrate their great potential as effective phosphors for solid-state light-emission.
研究领域:
材料科学
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光电子学
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光子学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2024
·
IF 18.5
Kaojin Wang,Han Si,Xianchao Du,Pengbo Han,Gaohuai Mei,Yanhua Cheng,Anjun Qin,Ben Zhong Tang
Bulk polymers generally exhibit faster response, higher shape-deformation speed, and stronger mechanical properties than the hydrogels. However, it still remains a formidable challenge to enable bulk polymers to exhibit reversible changes in shape and fluorescence simultaneously. Herein, for the first time, the temperature-responsive reversible changes in fluorescence color, brightness, and shape of semi-crystalline poly( ε -caprolactone) (PCL) network doped with a D-A based aggregation-induced emission luminogen (AIEgen) is realized. The fabricated flower-like and dragonfly-shaped actuators show reversible blooming-closing and wing fanning behaviors, respectively, as well as reversible fluorescence-changing effects. Notably, the response and shape-deformation speed as well as mechanical properties of the system is much better than the reported hydrogels. Moreover, a smart switch is developed to demonstrate the potential applications. The stick fabricated by the sample can lift and release an object 1000 times larger than its weight, serving as a color-changing artificial muscle. This material design strategy may shine light on the design and preparation of other reversible shape-deformation polymers in combination with stimuli-responsive luminescence-changing AIEgens, such as mechanochromic, thermochromic, and photochromic luminogens.
研究领域:
材料科学
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聚合物化学
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智能材料
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纳米技术
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Qi Zhou,Xuelin Dong,Yuxiang Xiong,Binbin Zhang,Shan Lu,Qin Wang,Yonggui Liao,Yajiang Yang,Hong Wang
In this work, we reported a multi-responsive luminescent hydrogel with properties of encryption, naked eye sensing of glucose, shape memory, self-healing, and antibacterial activity. The hydrogel (GA/CCS/DNSA/Eu3+) was obtained by mixing phenylboronic acid-modified gelatin (GA-DBA), catechol-modified carboxymethyl chitosan (CCS-PCA), 3,5-dinitrosalicylic acid (DNSA), and Eu3+ ions through a facile heating–cooling process. The resultant hydrogel exhibits reversible luminescence and color and phase changes in response to temperature, acid/base, salt, and redox stimuli. Based on the multiple responsiveness, information encryption and decryption, naked eye sensing of glucose, remarkable shape memory, and enhanced mechanical properties of the as-prepared hydrogel were realized. In addition, the self-healing capacity was also achieved due to the dynamic bonds in GA/CCS/DNSA/Eu3+ hydrogels. Specifically, the GA/CCS/DNSA/Eu3+ hydrogels possess antibacterial activity owing to the bacteriostasis of the CCS-PCA and DNSA/Eu3+ complex. Thus, GA/CCS/DNSA/Eu3+ hydrogels have potential applications in the fields of anticounterfeiting, wearable devices, biomedicine, sensing, etc.
研究领域:
材料科学
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纳米技术
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生物材料
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化学
·
生物医学工程
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）