ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Huangjie Lu,Zhaofa Zheng,Zi-Jian Li,Hongliang Bao,Xiaojing Guo,Xiaofeng Guo,Jian Lin,Yuan Qian,Jian-Qiang Wang
Rational design and synthesis of new photochromic sensors have been active research areas of inquiry, particularly on how to predict and tailor their properties and functionalities. Herein, two thulium 2,2′:6′,2′′-terpyridine-4′-carboxylate (TPC)-functionalized metal–organic hybrids, Tm(TPC)2(HCOO)(H2O) (TmTPC-1) and Tm(TPC)(HCOO)2 (TmTPC-2) with different photochromic response behaviors, have been successfully prepared, allowing for straightforward investigations of the structure–property correlation. Single-crystal X-ray diffraction and electron paramagnetic resonance analyses revealed that the incorporation of a unique dangling decorating TPC unit in TmTPC-1 offers a shorter and more accessible π–π interaction pathway between the adjacent TPC moieties than that in TmTPC-2. Such a structural feature leads to the production of radical species via a photoinduced intermolecular electron-transfer (IeMCT) process upon UV or X-ray irradiation, which ultimately endows TmTPC-1 with a rather unusual UV and X-ray dual photochromism. A linear relationship between the change of UV–vis absorbance intensity and X-ray dose was established, making TmTPC-1 a promising dosimeter for X-ray radiation with an extremely high energy threshold (30 kGy). To advance the development for real-world application, we have fabricated polyvinylidene fluoride (PVDF) membranes incorporating TmTPC-1 for functioning either as a UV imager or as an X-ray radiation indicator. Lastly, TmTPC-1 exhibits high thermal stability (up to 400 °C) and radioresistance (at least 900 kGy), and also excellent reversibility of photochromic transformation (at least 5 cycles).
研究领域:
材料科学
·
化学
✓ 已验证
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
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 14
·6386-6396
·
IF 3.591
Guangyao Li,Zhicheng Pan,Zhanyu Jia,Juan Wang,Jianlong Wang,Ning Zhang,Mingwang Pan,Jinfeng Yuan
Photochromic hydrogels have attracted widespread attention due to their potential applications in optical devices. Spiropyran (SP) is one of the most investigated organic photochromic compounds and has high sensitivity towards a wide range of stimuli. However, it generally requires sophisticated chemical modification for its incorporation into hydrogels as a functional monomer. In addition, the relatively poor mechanical property is a key limitation with the use of hydrogels in many applications. Herein, we provide an effective approach to directly incorporate the SP photochromic group into a polyurethane hydrogel without any modification. A new type of photochromic polyurethane hydrogel that has excellent photochromic and mechanical properties was successfully prepared. Due to the isomerization reaction of the reversible Cspiro–O bond provided by SP, the hydrogel demonstrated a noticeable and reversible color change on adjusting the SP content. The incorporation of SP significantly improved the mechanical properties of the PU hydrogel; the tensile strength (3.41 MPa) and the high elastic modulus (4.29 MPa) of the PU-SP hydrogel increased 5.4-fold and 9.5-fold, respectively, as compared to the PU hydrogel under the same –NCO to –OH ratio. Moreover, the PU-SP hydrogel has a good reversible photochromic property, which can easily achieve repeated erasing and rewriting. In summary, our present work provides an effective approach to prepare a high-strength and light-responsive photoswitch polyurethane hydrogel through SP without further chemical modification, which may have broad application prospects in wearable soft sensors, erasable optical displays and artificial intelligence systems.
研究领域:
材料科学
·
聚合物化学
·
光电学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 104
·期 4
·1785-1796
·
IF 3.502
Jianqiang Bi,Tong Wei,Linghui Shen,Fengming Yang,Chuanzhen Zhao,Mingchao Wang,Qiqian Yang,Yuxuan Lin
Upconversion (UC) luminescence modulation is quite important in controlling and processing light for active components of light sources, photoswitches, optical memories, and optical sensing devices. In this work, we reported one kind of novel phosphor, Ho 3+ /Yb 3+ -doped SrBi 4 Ti 4 O 15 ceramics, which displayed both strong UC luminescence and obvious photochromic (PC) reaction. The UC luminescence, PC effect, and the modulation of UC performance based on PC behavior were investigated in detail. By alternating visible light irradiation and thermal stimulus, the UC luminescence could be reversibly regulated. Meanwhile, the modulation was unveiled to tightly rely on the irradiation time and thermal treatment processes. Excellent reproducibility was also achieved. In addition, as an alternative method to thermal treatment, the manipulation of luminescence by electric field was also explored. Finally, the mechanism related to the UC luminescence manipulation was illustrated. The results indicate that these samples could be potentially utilized in optical data storage and anti-counterfeiting security fields.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Qiangqiang Wen,Yuwei Ma,Fenglong Zhang,Han Sun,Weixiang Shang,Qiang Wang,Jinxiao Bao
Herein, we report a kind of structural and functional integrated ceramic material with excellent mechanical and optical properties . A series of Er-doped Zr 6 Nb 2 O 17 ceramic samples were prepared by the high-temperature solid-phase method, which showed reversible photochromism from light curry to dark brown under the alternating action of 365 nm UV light and heat treatment at 350 °C. The photochromic process is fully reversible and has good cyclic stability with a maximum photochromic contrast of 20.1%. The fluorescence modulation behavior based on the photochromic reaction can effectively modulate the emission of Er 3+ , and the maximum fluorescence modulation ratio reaches 62%. The best Vickers hardness and fracture toughness values of the prepared Zr 6 Nb 2 O 17 : Er ceramics reached 15.88 GPa and 4.5 MPa m 1/2 respectively. The mechanisms of the observed photochromism, photoluminescence , and fluorescence modulation were studied systematically. This work is expected to provide significant guidance for the development of high-performance colored ceramic materials and broaden its market application field.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 36
·15350-15353
·
IF 3.288
Mei Gao,Chaofan Lian,Rang Xing,Jie Wang,Xuefei Wang,Zhiyuan Tian
The optimal storage temperature for vaccines ranges from 2 °C to 8 °C. Electronic thermometers can provide real-time and remote temperature monitoring but are not applicable for individual packages. However, it is known that few alkanes have melting points in this range. The photo-induced conversion of colorless spiropyran to blue merocyanine can be thermally reversed, resulting in decoloration. By dispersing spiropyran in a mixture of n-tetradecane and n-pentadecane with the melting point of 8 °C, an accurate and low-cost thermochromism indicator to record temperature abuse has been designed. The results showed that the thin label based on this system has taken a permanent decoloration within 10 min of the temperature exceeding 8 °C.
研究领域:
生物化学
·
制药工程
✓ 已验证
产品关联
DOI
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2022
·Vol. 55
·期 4
·288-295
·
IF 1.702
Yanan Huo,Jingxiang Zhou,Zushun Xu,Tianyou Chen,Haonan Ji,Fanbao Zeng,Yun Wang,Xiaoxi Hu
Photochromic coatings have been widely used in many fields such as architecture, transportation, and military because of the combination of reversible color-changing properties with the insulation and protection of substrates. Conventionally, organic photochromic components are used for the preparation of photochromic coatings with fast photo-response and excellent fatigue resistance, but the preparation of these coatings is costly and time-consuming. Here, we have developed a relatively simple and cost-effective strategy for the preparation of water-based photochromic polyurethane coatings. Er(III)-doped WO 3 was synthesized and used as the photochromic component for the preparation of polyurethane/Er(III)-doped WO 3 composites, which were further used for the preparation of photochromic coatings. The properties of the coatings were tested and characterized. Due to their excellent thermal stability, water resistance, fatigue resistance, and photochromism, these coatings might have practical applications in various areas.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Tingfeng Ma,Bin Li,Shouqin Tian,Jiachen Qian,Longxiao Zhou,Qiufen Liu,Baoshun Liu,Xiujian Zhao,Gopinathan Sankar
W 18 O 49 has widely used in photothermal application and photocatalyst due to its strong Localized Surface Plasmon Resonance (LSPR) effect and unique oxygen-deficient structure. In addition, the unstable structure and easily changed valence state of W 5+ make W 18 O 49 potentially photochromic. However, the generally synthesized blue W 18 O 49 particles was in a saturated colored state, delivering a great challenge in exploring its photochromic features, which thus have seldom been studied. Herein, we found that the bleached W 18 O 49 obtained by mild-heating the solvothermal-synthesized blue W 18 O 49 nanoparticles in air had considerable reversible photochromic feature, which can be colored in 1 min under UV irradiation. The photochromic mechanism of W 18 O 49 was revealed through the XRD, XPS and FTIR results. The chromic process was mainly attributed to the changed W 5+ content under different conditions. The photochromic performance was systematically investigated on the W 18 O 49 -based film and which can be significantly improved by Ti doping. Finally, the great potential of the films in the energy-saving smart windows application has verified, and a 10 at.% Ti-doped W 18 O 49 film delivered outstanding optical performance with luminous transmittance ( T lum ) of 87.53% and solar energy modulation efficiency (Δ T sol ) of 30.13%.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2024
·
IF 4.1
Tuodong Xiong,Wanxiong Yong,Na Chen,Guodong Fu
Photochromic materials have recently attracted widespread attention in the research of smart windows because they can function without additional devices. In this study, an innovative photochromic thermal insulating hybrid film based on a polyurethane matrix was prepared via a one-pot method, incorporating phosphotungstic acid. The film demonstrates excellent transparency, good mechanical strength, and a significant modulation of the solar spectrum, transitioning from colorless to dark blue under sunlight without the need for additional electron donors. This photochromic behavior is reversible and reproducible without degradation, resulting in a transmittance variation of up to 71 % at 550 nm, which is the most sensitive to the human eye, and more than 50 % modulating performance in 1800 ∼ 2500 nm. In addition, thermal insulation experiments proved that the smart window device prepared by the film could achieve a reduction of 9.3 °C under daylight. Overall, the photochromic films prepared using the one-pot method show good performance involving mechanical strength, efficient photochromic response, broad spectral range modulation, high coloring efficiency and cycling stability, and have promising applications in energy-saving buildings, anti-counterfeiting and smart displays.
研究领域:
材料科学
·
能源工程
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Mengmeng Kang,Xingmeng Su,Yuanchang Zhang,Yu Yao,Olayinka Oderinde,Guodong Fu
To address the growing demand for energy-efficient information storage and smart displays, we have developed a fast, self-healing, rewritable photochromic hydrogel based on visible light-responsive reverse photochromism. The developed hydrogel is engineered by integrating carboxyl-functionalized spiropyran into a poly(vinyl alcohol) (PVA) matrix, utilizing hydrogen bonding, crystallization of PVA chains, and B–O bonds. The reverse photochromic effect is significantly enhanced by the addition of sodium tetraborate, which is further augmented by the temperature increase. Additionally, a carboxyl-functionalized spirooxazine is used as a couple for UV tuning stimulation, so the self-healing reverse photochromic hydrogel could respond to both the visible and UV, impacting more diverse color variations as well as enhancing the controllability of the hydrogel. This approach promotes the development of reverse photochromic hydrogels, potentially expanding their applications in tunable and rewritable display technologies.
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 FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Xue Bai,Zan Xu,Yingzhu Zi,Heping Zhao,Bokun Zhu,Rongbao Feng,Yangke Cun,Anjun Huang,Yue Liu,Yuewei Li,Jianbei Qiu,Zhiguo Song,Steven J. Langford,Jiayan Liao,Zhengwen Yang
This study explores the integration of X-ray-induced photochromism and photoluminescence in a single material, offering innovative multi-mode applications in optical memory, anti-counterfeiting, and X-ray detection and imaging. The photochromic phosphor LiAlSi 2 O 6 :Sm 3+ is synthesized, which undergoes a color change from white to dark green under bright field conditions and displays orange photoluminescence in dark field conditions after X-ray exposure due to defect formation. The phosphor shows accelerated bleaching and recovery under 473 nm laser stimulation. The distinct X-ray-induced color contrast and luminescence intensity modification in LiAlSi 2 O 6 :Sm 3+ highlight its potential in advanced luminescent material design. Moreover, a LiAlSi 2 O 6 :Sm 3+ -based flexible film demonstrates “dual-mode” 3D X-ray imaging and detection capabilities, paving the way for future X-ray detecting and imaging device research.
研究领域:
材料科学
·
光学
·
医学影像
✓ 已验证
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 15
·2496
·
IF 4.329
Shiyou Tian,Jicong Zhang,Qiong Zhou,Limei Shi,Wenwen Wang,Dong Wang
We report photochromic polyamide 6 (PA6) which was synthesized by hydrolyzed ring-opening polymerization of ε-caprolactam with spiropyran (SP) embedded in the polymer chains. It indicated that crystallinity degree of the resulting copolymers was decreased since only PA6 segments can crystallize with increasing content of SP modifier. Meanwhile, toughness of photochromic PA6 was decreased. The photochromic property analysis indicated that the sample with more flexibility and more content of SP was more sensitive to UV light at the beginning of irradiation than other samples and its color after being irradiated for 1 min tended to reddish. Investigation revealed that the UV-vis absorbance of SP-PA6-3 had negligible decay after 10 cycles, which indicated SP-modified PA6 possessed excellent photoresponse reversibility and fatigue resistance.Keywords:photochromic;polyamide 6;spiropyran;structure and properties
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）