CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jiawei Jiang,Peisheng Zhang,Le Liu,Yuqi Li,Yubin Zhang,Tiancheng Wu,Helou Xie,Chonghua Zhang,Jiaxi Cui,Jian Chen
Stimuli-responsive fluorescent materials that can alternate their emission states on-demand are always desired in many applications. In this study, novel photoswitchable multistate fluorescent polymer (PMFP) was prepared via simple free-radical copolymerization of butyl acrylate (BA) and styrene (St) with two photochromic fluorescent monomers, i.e. sulfonyl diarylethylene-linked 4-hydroxybutyl acrylate (SDTE) and spiropyran-linked methacrylate (SP8). The PMFP displays excellent processability, due to its rational feed ratio of BA and St which result in the relative low glass transition temperature. By changing irradiation light, the non-fluorescent ring-closed spiropyran units and ring-opened diarylethylene moieties in PMFP can be selectively converted into their corresponding luminescence states. Furthermore, as a result of the controllable fluorescence resonance energy transfer (FRET) from the excited diarylethylene to the spiropyran moieties, the emission of the polymer in solution or film can be reversibly switched among distinguishable no-emission, red, and green fluorescence states. Moreover, the PMFP exhibits high brightness, high contrast, rapid photoresponse, and excellent photoreversibility. We also demonstrated that PMFP can be directly used for advanced high-density data storage, multilevel information encryption, and multicolor photorewritable pattern, as well as high-level anticounterfeiting.
研究领域:
材料科学
·
光学
·
信息存储技术
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DOI
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 41
·8615-8625
·
IF 6.331
Buyun Guo,Rong Fan,Shuwei Shen,Yue Xue,Zhiqiang Zhu,Ronald X. Xu
Accurate delivery of therapeutics to tumor regions and effective sparing of normal tissue structures are important principles for the treatment of widespread metastases or malignant lesions in close proximity to vital organs. However, the currently available drug delivery techniques do not support precise drug release within the identified disease margins. We propose a tailored drug delivery strategy that utilizes a photo-responsive material in combination with tumor margin imaging for automated and tailored release of therapeutics. As a proof of concept, a poly(ethylene oxide)-b-PSPA (PEO-b-PSPA) diblock copolymer is synthesized by spiropyran (SP) polymerization. A photo-responsive membrane (PRM) is formed and irradiated with light sources of different wavelengths. Switching irradiation between ultraviolet light (UV) and green light (Vis) controls the permeability of the PRM in coincidence with the programmed irradiation patterns. The dynamic process of photo-switchable drug permeation through the PRM is modeled and compared with the experimental results. The strategy of tailored drug release is verified using both regular geometric shapes and metastatic cancer images. The therapeutic effect of this tailored drug release strategy is demonstrated in vitro in human breast cancer cells. Our pilot study implies the technical potential of using photo-responsive carriers for image-guided chemotherapy with precisely controlled drug release patterns.
研究领域:
生物医学工程
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药理学
·
肿瘤学
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产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2019
·
IF 3.782
Pang Juan,Gao Ziyu,Tan Huaping,Mao Xincheng,Xu Jialing,Kong Jingyang,Hu Xiaohong
Light-responsive materials have attracted increasing interest in recent years on account of their adjustable on-off properties upon specific light. In consideration of reversible isomerization transition for azobenzene (AZO), it was designed as a light-responsive domain for nanoparticles in this research. At the same time, the interaction between AZO domain and β-cyclodextrin (β-CD) domain was designed as a driving force to assemble nanoparticles, which was fabricated by two polymers containing AZO domain and β-CD domain, respectively. The formed nanoparticles were confirmed by Dynamic Light Scattering (DLS) results and Transmission Electron Microscope (TEM) images. An obvious two-phase structure was formed in which the outer layer of nanoparticles was composed of PCD polymer, as verified by 1HNMR spectroscopy. The efficient and effective light response of the nanoparticles, including quick responsive time, controllable and gradual recovered process and good fatigue resistance, was confirmed by UV-Vis spectroscopy. The size of the nanoparticle could be adjusted by polymer ratio and light irradiation, which was ascribed to its light-response property. Nanoparticles had irreversibly pH dependent characteristics. In order to explore its application as a nanocarrier, drug loading and in vitro release profile in different environment were investigated through control of stimuli including light or pH value. Folic acid (FA), as a kind of target fluorescent molecule with specific protein-binding property, was functionalized onto nanoparticles for precise delivery for anticancer drugs. Preliminary in vitro cell culture results confirmed efficient and effective curative effect for the nanocarrier on MCF-7 cells.
研究领域:
材料科学
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生物医学工程
·
药学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 10
·2300056
·
IF 9
Min Liu,Shu-Hua Ma,Hui Dong,Feng-Lian Zeng,Xue-Ting Jin,Yang-Hui Luo
Photoreversible color-switching materials, which can reversibly change color in response to external light stimuli, have attracted increasing attention for their applications in time-sensitive information storage and optical data storage fields. But most of the related materials are dyes or redox compounds with ultraviolet as the light source, dramatically limiting the cycling stability during discoloration processes. To address this problem, a near-infrared (NIR)-responsive rewritable paper via doping layered Co-metal–organic frameworks (MOFs) into the stable polyvinylidene fluoride matrix is reported for the first time. Layered Co-MOF shows a rapid color-switching characteristic between orange and black blue upon NIR illumination on/off because of the interlayer spacing changes. Benefiting from the soft network structures of the matrix, Co-MOF can be homogeneously distributed to deliver an outstanding reversibility performance, including rapid response, coloration in a short period, and decoloration within about 3 min in ambient air. The fabrication of new photoreversible color switching system holds great potential in communication security, which offers a viable pathway to achieve ink-free photoreversible printing.
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
iScience
·
2024
·Vol. 27
·期 2
·108790-108790
·
IF 4.6
Yufan Ji,Bowen Yang,Feng Cai,Tianfu Song,Haifeng Yu
Numerous anticounterfeiting platforms using photoresponsive materials have been designed to improve information security, enabling applications in anticounterfeiting technology. However, fabricating sophisticated micro/nanostructures using bidirectional mass transport to achieve advanced anticounterfeiting remains challenging. Here, we propose one strategy to achieve steerable mass transport in a photoresponsive system with the assistance of solvent vapor at room temperature. Upon optimizing the host-guest ratio and the width of photoisomerized areas, wettability gradient is acquired just photo-patterning once, then bidirectional mass transport is realized due to the competition of mass transport induced by surface energy gradient of the material itself and flow of the solvent on the film surface with wettability gradient. Taking advantage of the interaction between solvent and film surface with wettability gradient, this bidirectional polymer flow has been successfully applied in multi-mode anticounterfeiting. This work paves a promising avenue toward high-level information storage in soft materials, demonstrating the potential applications in anticounterfeiting.
研究领域:
材料科学
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信息存储与安全
·
化学工程
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DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Chunhao Li,Caifeng Wang,Yiting Liu,Yang Zhang,Shuai Wang,Ruisheng Zhao,Aiju Xu
Photoresponsive materials may be used to improve the humidity of a microenvironment, thus improving the comfort of people occupying that space. In this work, by constructing a synergistic layer (amino groups) and a regulating layer (spiropyran compounds) on the surface of polyacrylonitrile (PAN) electrospun membranes, we successfully developed fiber materials with excellent mechanical stability that can reversibly regulate the humidity of the microenvironment. Spiropyran molecules can undergo photoisomerization (reversible polar-nonpolar structure interconversion) by conversion of ultraviolet/visible light. The wettability and microenvironment humidity can be controlled bidirectionally under different light sources. More importantly, the amino groups on the fiber surface can assist the ring-opened merocyanine in absorbing water molecule, thus playing a synergistic role. Moreover, changing the electrospinning voltages can help regulate the porosity of the fiber materials, which can change wettability and the humidity range regulation. The energy change of spiropyran before and after water absorption was obtained by density functional theory calculations, and it is further proven that the synergistic layer can promote the ability of humidity regulation.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Nano-Micro Letters
·
2025
·Vol. 18
·期 1
·58
·
IF 36.3
Zheng Jianchen,Zhang Yuzhao,Yu Haibo,Wang Jingang,Guo Hongji,Qiu Ye,Wang Xiaoduo,Feng Yu,Liu Lianqing,Li Wen Jung
Proposed a dynamic grayscale gradient modulation system enabling multi-information analysis and encryption under multi-optical fields, establishing a new paradigm for multi-dimensional encryption of collaborative multispectral information.
Developed coumarin-based photo-responsive in situ reconstruction technology and constructed a multi-optical field coupled control system to achieve dynamic configuration of multi-information carriers.
Designed and fabricated a micro-dynamic multiple encryption device with integrated functions for information writing, erasing and rewriting, realizing stable information storage and dynamic destruction through micro/nano-optical keys.
研究领域:
光学工程
·
纳米光子学
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信息科学
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材料科学
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密码学
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微纳制造
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功能材料
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光化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 53
·期 20
·14337-14349
·
IF 2.993
He Shuai,Li Hui,Chen Hualin
The dispersion of graphene in water has generally been considered an insurmountable challenge owing to its hydrophobic nature. In this study, a new type of light-sensitive polymer/graphene composite (AzoPEO/β-CD–RGO) was synthesized by the reversible host–guest interaction between azobenzene-terminal poly(ethylene oxide) (AzoPEO) and a β-cyclodextrin (β-CD) host attached to the surface of graphene via hydrogen bonding. In water, the AzoPEO/β-CD–RGO composite not only is well dispersed, but also exhibits reversible dispersion/aggregation behavior triggered by UV and visible light. Moreover, the graphene composite can be used to fabricate a light-responsive graphene-based drug delivery system. This kind of light-responsive graphene composite, which efficiently allows the control of graphene dispersion/aggregation, may find wide applications in the preparation of intelligent drug delivery systems, smart sensors, and switching devices.
研究领域:
高分子科学
·
纳米医学
·
药物递送
·
生物材料
·
光响应治疗
·
分子识别
·
智能材料
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·
IF 3.7
Jinbo Ouyang,Longping Jiang,Jiayao Li,Feiqiang He,Zhi Gao,Mengmeng Wang,Limin Zhou,Zongbo Xie,Zhiqiang Zhu,Yifu Chen
Graphical Three isomeric fluorinated acylhydrazone derivatives (DFBP-IND, DFBP-BHD, DFBP-3-FBHD) were successfully synthesized and demonstrated dynamic photo-responsive behavior ranging from crack initiation to crystal fragmentation under 365 nm UV irradiation. The photochemical mechanism was explored in detail and highlighted the essential role of the C═N bond in the acylhydrazone framework for enabling [2+2] cycloaddition-driven actuation. Our structural engineering strategy established a design paradigm for photoresponsive materials through rational selection of hydrazide precursors, enabling precise modulation of optomechanical properties. Crystalline materials with photomechanical responsiveness have garnered significant attention in flexible actuators and micro/nano-electromechanical systems due to their unique capability to directly convert light into mechanical energy. In this work, four novel fluorinated acylhydrazone compounds were successfully synthesized through direct condensation reactions between 4,4′-difluorobenzophenone (DFBP) and acylhydrazine compounds, including benzoylhydrazine (BHD), 3-fluorobenzoylhydrazine (3-FBHD), isoniazid (IND), and acetylhydrazine (AED). Systematic investigation of their photomechanical responses revealed distinct molecular mechanisms. Experimental results demonstrate that isomeric fluorinated acylhydrazone derivatives (DFBP-BHD, DFBP-3-FBHD, DFBP-IND) exhibit dynamic photo-responsive behavior ranging from crack initiation to crystal fragmentation under 365 nm UV irradiation, whereas the hydrazone derivative DFBP-AED remains inert. This confirms the essential role of [2 + 2] photocycloaddition-dependent C = N double bonds in photomechanical activity. Comprehensive characterization through DSC, TG, XRD, ¹H/¹ 3 C NMR, and MS elucidated the formation pathways and structural characteristics of photocycloaddition products. Density functional theory calculations revealed that energy disparities between (0 0 1) and (1 0 0) crystallographic planes govern longitudinal fragmentation patterns. This study establishes a “molecular structure-crystal arrangement-macroscopic response” multi-scale regulation strategy, offering novel insights for developing high-performance light-driven materials.
研究领域:
材料科学
·
光化学
·
晶体工程
·
机械工程
·
理论化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Rujun Yang,Long Chen,Cunjian Lin,Honghui Huang,Zishuang Wu,Chenhan Zhan,Yixi Zhuang,Rong-Jun Xie
Photochromism and persistent luminescence (PersL) are two fascinating light-responsive effects in phosphors, both of which have found widespread applications in optical switching, optical anticounterfeiting and information storage. However, the relationship between photochromism and PersL has not been clarified, thus greatly limiting the use and design of the light-responsive materials in multifunctional applications. Herein, taking BaMgSiO 4 :Eu 2+ , TM (TM = transition metal: Fe, Co and Cr) as model materials, we first reveal that photochromism and PersL could be two independent photophysical effects, although they are both related to the charge carrier trapping/detrapping processes. Notably, photochromism and PersL show have different responses to light wavelengths, and the depth of traps involved in the two effects is also quite different. Moreover, by codoping different transition metal elements, we obtain the largest reflectance difference of ∼71 % among inorganic photochromic materials reported thus far, and demonstrate interesting multicolor photochromism, including magenta, golden and pink. Based on their distinct response to light and temperature, a multi-functionalized optical anticounterfeiting technology is proposed, which may open up a new avenue for applying the light-responsive materials in flexible electronics and wearable devices.
研究领域:
材料科学
·
光学
·
光子学
·
纳米技术
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jing Wang,Yuanmeng Zhou,Shulun Ai,Zhiguang Guo
The traditional approach has significant limitations in designing and manufacturing high-performance micro-nanorobots with complex three-dimensional structures and response characteristics at the micro-nanoscale, making it difficult to meet practical demands. The ingenious utilization of the structural characteristics of natural pollen is expected to solve this difficulty. Sunflower pollen has a spiky spherical structure. It is expected to be used for the preparation of high-performance microrobots. A magnetically responsive bubble-controlled micro-nanorobot (MNR) platform with natural sunflower pollen as the “skeleton” has been developed. Its micro/nano composite multilevel surface morphology can load magnetic nanoparticles and achieve high hydrophilicity/hydrophobicity. The spherical profile and an average particle size of 30 μm endow it with high passability. The excellent magnetic/optical response and hydrophilicity of MNR enable the capture and release of 5–100 μL bubbles in complex environments. A precise bubble fixed-point release scheme based on the excellent photothermal properties of MNR is revealed. The loading of photothermal particles through simulation calculation enables MNR to heat up to 141.9 °C within 7 s and achieve rapid bubble release within 100 μs. The rapid merging of bubbles can be achieved at 50 μs in the gas–liquid simulation reaction. It passed the “maze test”. It shows good biocompatibility. The cell mortality rate of SP, SPC, and MNR cells cocultured for 24 h is only 7.8–11.2%. This reveals the possibility of application in organoid microchips.
研究领域:
纳米机器人技术
·
微流控
·
生物医学工程
·
软体机器人
·
光响应材料
·
磁控系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOID AND POLYMER SCIENCE
·
2013
·Vol. 292
·期 1
·85-95
·
IF 2.161
Zhao Xiaohai,Dang Yun,Deng Jianguo,Zhang Junhua
In this paper, polyvinyl alcohol (PVA) bearing coumarin with different degrees of substitution (DS) are synthesized by esterifying hydroxyl of PVA with 7-carboxylmethoxycoumarin. The grafted polymer has photosensitive property and presents photocrosslinking due to the photodimerization between pendant coumarin groups, which affords PVA–coumarin sample photoinduced shape fixity properties. PVA–coumarin can be cross-linked after being illuminated under UV light of 360 nm; this provides the possibility that the sample has shape memory properties only if the cross-linking extent is suitable. The shape memory properties were induced by thermal as most shape memory polymer do. In fact, the shape fixity and recovery has strong relationship with DS, irradiation time, and thickness of sample. The effect of DS on the grafted polymer structure and properties has been studied by differential scanning calorimetry, thermogravimetric analysis, and UV spectra.
研究领域:
高分子科学
·
智能材料
·
光响应材料
·
形状记忆聚合物
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）