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Responsive and self-healing Structural color supramolecular hydrogel patch for diabetic wound treatment

Bioactive Materials 2022年第9期7卷 194-202页

作者： Canwen Chen Yu Wang Han Zhang Hui Zhang Weiliang Dong Weijian Sun Yuanjin Zhao Department of Rheumatology and Immunology Institute of Translational MedicineThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing210008China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing211800China Department of Gastrointestinal Surgery The Second Affiliated Hospital of Wenzhou Medical UniversityWenzhou325027China

The treatment of diabetic wounds remains a great challenge for medical community.Here,we present a novel Structural color supramolecular hydrogel patch for diabetic wound treatment.This hydrogel patch was created by using N-acryloyl glycinamide(NAGA)and 1-vinyl-1,2,4-triazole(VTZ)mixed supramolecular hydrogel as the inverse opal scaffold,and temperature responsive poly(N-isopropylacrylamide)(PNIPAM)hydrogel loaded with vascular endothelial cell growth factor(VEGF)as a filler.Supramolecular hydrogel renders hydrogel patch with superior mechanical properties,in which NAGA and VTZ also provide self-healing and antibacterial properties,respectively.Besides,as the existence of PNIPAM,the hydrogel patch was endowed with thermal-responsiveness property,which could release actives in response to temperature stimulus.Given these excellent performances,we have demonstrated that the supramolecular hydrogel patch could significantly enhance the wound healing process in diabetes rats by downregulating the expression of inflammatory factors,promoting collagen deposition and angiogenesis.Attractively,due to responsive optical property of inverse opal scaffold,the hydrogel patch could display color-sensing behavior that was suitable for the wound monitoring and management as well as guidance of clinical treatment.These distinctive features indicate that the presented hydrogel patches have huge potential values in biomedical fields.

关键词： Bioinspired Structural color Responsive Patch Wound healing

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Stomatocyte Structural color-barcode micromotors for multiplex assays

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National Science Review 2020年第3期7卷 644-651页

作者： Lijun Cai Huan Wang Yunru Yu Feika Bian Yu Wang Keqing Shi Fangfu Ye Yuanjin Zhao Precision Medicine Center Laboratory The First Affiliated Hospital of Wenzhou Medical University Wenzhou Institute University of Chinese Academy of Sciences State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast University Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences

Artificial micromotors have a demonstrated value in the biomedical area. Attempts to develop this technology tend to impart micromotors with novel functions to improve the values. Herein, we present novel Structural color-barcode micromotors for the multiplex assays. We found that, by rapidly extracting solvent and assembling monodispersed nanoparticles in droplets, it could form stomatocyte colloidal crystal clusters, which not only showed striking Structural colors and characteristic reflection peaks due to their ordered nanoparticles arrangement, but also provided effective cavities for the integration of functional elements. Thus, the micromotors with catalysts or magnetic elements in their cavities, as well as with the corresponding Structural color coding, could be achieved by using the platinum and ferric oxide dispersed pre-gel to fill and duplicate the stomatocyte colloidal crystal clusters. We have demonstrated that the self-movement of these Structural color-barcode micromotors could efficiently accelerate the mixing speed of the detection sample and greatly increase the probe–target interactions towards faster and more sensitive single or multiplex detection, and the magnetism of these barcode micromotors enables the flexible collection of the micromotors, which could facilitate the detection processes. These features make the stomatocyte Structural color-barcode micromotors ideal for biomedical applications.

关键词： Structural color micromotor sensor photonic crystal multiplex assay

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Recent advances in multifunctional shape memory photonic crystals and practical applications

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Nano Research 2024年第1期17卷 79-96页

作者： Yong Qi Shufen Zhang State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China

Shape memory photonic crystals(SMPCs)are smart composite materials with changeable Structural color integrated by shape memory polymer and photonic crystals.SMPC can produce one or more temporary shapes through nanoscale deformation,memorizing current states.SMPC can be recovered to their original shapes or some intermediate states under external stimuli,accompanied by the variation of Structural color.As porous carriers with built-in sensing properties,SMPCs promoted the interdisciplinary development of nanophotonic technology in materials science,environmental engineering,biomedicine,chemical engineering,and mechanics.Herein,the recent progress on multifunctional SMPCs and practical applications,including traditional and cold programmable SMPCs,is summarized and discussed.The primary concern is shape programming at the nanoscale that has demonstrated numerous attractive functions,including smart sensing,ink-free printing,solvent detection,reprogrammable gradient wetting,and controllable bubble transportation,under variations of the surface nanostructure.It aims to figure out the nanoscale shape memory effects on Structural color conversion and additional performance,inspiring the fabrication of the next generation of SMPCs.Finally,perspectives on future research directions and applications are also presented.It is believed that multifunctional SMPCs are powerful nanophotonic tools for the interdisciplinary development of numerous disciplines in the future.

关键词： photonic crystal shape memory Structural color cold programmable shape recovery

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Ionically Imprinting-Based Copper(Ⅱ)Label-Free Detection for Preventing Hearing Loss

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Engineering 2024年第2期33卷 276-282页

作者： Huan Wang Hui Zhang Xiaoli Zhang Hong Chen Ling Lu Renjie Chai The Eighth Affiliated Hospital Sun Yat-Sen UniversityShenzhen 518033China State Key Laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck SurgeryZhongda Hospital&Advanced Institute for Life and HealthSoutheast UniversityNanjing 210096China Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging Department of Biomedical EngineeringShenzhen UniversityShenzhen 518060China Department of Otolaryngology Head and Neck Surgery Jiangsu Provincial Key Medical DisciplineNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008China Co-Innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610072China Institute for Stem Cell and Regeneration Chinese Academy of ScienceBeijing 100101China Beijing Key Laboratory of Neural Regeneration and Repair Capital Medical UniversityBeijing 100069China

Copper is a microelement with important physiological functions in the body.However,the excess copper ion(Cu^(2+))may cause severe health problems,such as hair cell apoptosis and the resultant hearing loss.Therefore,the assay of Cu^(2+)is important.We integrate ionic imprinting technology(IIT)and structurally colored hydrogel beads to prepare chitosan-based ionically imprinted hydrogel beads(IIHBs)as a low-cost and high-specificity platform for Cu^(2+)detection.The IIHBs have a macroporous microstructure,uniform size,vivid Structural color,and magnetic responsiveness.When incubated in solution,IIHBs recognize Cu^(2+)and exhibit a reflective peak change,thereby achieving label-free detection.In addition,benefiting from the IIT,the IIHBs display good specificity and selectivity and have an imprinting factor of 19.14 at 100μmol·L^(-1).These features indicated that the developed IIHBs are promising candidates for Cu^(2+)detection,particularly for the prevention of hearing loss.

关键词： Structural color Microfluidics Ionic imprinting Label-free detection Hearing loss

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Bioinspired Structural color particles with multi-layer graphene oxide encapsulated nanoparticle components

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Bioactive Materials 2020年第4期5卷 917-923页

作者： Yuxiao Liu Yuetong Wang Yu Wang Yilai Shu Hui Tan Yuanjin Zhao Department of Neurosurgery Health Science CenterThe First Affiliated Hospital of Shenzhen UniversityShenzhen518035China ENT Institute and Otorhinolaryngology Department of the Affiliated Eye and ENT Hospital State Key Laboratory of Medical NeurobiologyInstitute of Biomedical SciencesFudan UniversityShanghai200031China Department of Clinical Laboratory The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing210008China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China

Because of the unique features of spherical symmetry,angle-independency,good monodispersity,controllable components and morphologies,Structural color particles(SCPs)have found great significances in various fields such as sensing,monitoring,biological assays,etc.Here,inspired by the melanosome-derived bright Structural colors and the self-adhesivity of mussels,we present a kind of bioinspired SCPs assembled from polydopamine(PDA)-adhered multi-layer graphene oxide(GO)encapsulated silica nanoparticles(SNs).It is demonstrated that compared with traditional SCPs,the designed particles possess brighter and more vibrant Structural colors,and no complicated modification is required during the functionalization process due to the abundant inherent functional groups of GO.The resultant SCPs are verified to be capable for direct hybridization chain reaction and multiplexed nucleic acid assays.These properties indicate the promising prospects of our designed SCPs.

关键词： Bioinspired Structural color Graphene oxide Colloidal crystal Microfluidics

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Tunable Structural color of anodic tantalum oxide films

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Chinese Physics B 2012年第8期21卷 527-531页

作者：盛翠翠蔡云雨代恩梅梁长浩 Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology Institute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of Sciences Information Center Hefei Institutes of Physical ScienceChinese Academy of Sciences

Tantalum （Ta） oxide flhns with tunable Structural color were fabricated easily using anodic oxidation. The structure, components, and surface valence states of the oxide films were investigated by using gazing incidence X-ray diffractometry, X-ray photoelectron microscopy, and surface analytical techniques. Their thickness and optical properties were studied by using spectroscopic ellipsometry and total reflectance spectrum. color was accurately defined using L＊a＊b＊ scale. The thickness of compact Ta2O5 films was linearly dependent on anodizing voltage. The film color was tunable by adjusting the anodic voltage. The difference in color appearance resulted from the interference behavior between the interfaces of air-oxide and oxide metal.

关键词： anodic tantalum oxide Structural color spectroscopic ellipsometry optical interference

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Bioinspired multichannel colorful encryption through kirigami activating grating

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Science Bulletin 2023年第3期68卷 276-283,M0003页

作者： Xiaoyu Hou Florian Vogelbacher Xintao Lai Kaixuan Li Yanlin Song Mingzhu Li Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Materials Processing and Mold of the Ministry of Education Zhengzhou UniversityZhengzhou 450002China

Optical encryption,exploiting degrees of freedom of light as parameters to encode and decode information,plays an indispensable role in our daily life.Responsive Structural color materials can give real-time visible feedback to external stimuli and provide ideal candidates for optical encryption.However,the development of existing responsive Structural color materials is hindered by poor repeatability and long feedback time.Meanwhile,there are only few strategies to exploit Structural colors in multichannel information encryption.Herein,bioinspired by the Structural color variation due to a change in angle arising from the movement of animal’s scales or feathers,we developed a general multichannel information encryption strategy using a two-dimensional deformable kirigami arranging orientations of the grating arrays by design.The kirigami grating sheet shows rapid,repeatable,and programmable color change.This strategy utilizes the topological space deformation to guide the change of optical property,which suggests new possibilities for spatial and spectral encryption as well as mechano-sensing and camouflage.

关键词： Structural color Encryption Kirigami Grating color change

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Recent advances in photonic crystal with unique Structural colors:A review

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Journal of Materials Science & Technology 2023年第10期141卷 78-99页

作者： Keming Zhu Changqing Fang Mengyuan Pu Jing Song Dong Wang Xing Zhou School of Mechanical and Precision Instrument Engineering Xi’an University of TechnologyXi’an 710048China Faculty of Printing Packaging Engineering and Digital Media TechnologyXi’an University of TechnologyXi’an 710048China

Inspired by special color-forming organisms in nature,photonic crystal materials with Structural color function have been developed significantly with great potential applications for displays,sensors,anti-counterfeiting inks,etc.This review aims to summarize the functions,self-assembly modes,and ap-plications of different kinds of photonic crystal materials.The preparation methods and characteristics of monodisperse inorganic nanoparticles,polymer nanoparticles,inorganic/organic core-shell nanoparti-cles,and MOFs are discussed.Subsequently,we summarize the method of assembling colloidal parti-cles into photonic crystals,which is a template induction method,inkjet printing method,drop coating method,etc.Moreover,the potential application of Structural color is presented including humidity re-sponse and magnetic field response in sensors fields,as well as the advantages and disadvantages of anti-counterfeiting,fabric coloring,displays,smart windows,and Biomedical Applications.Finally,we present the development prospects and key problems of photonic crystals.

关键词： Photonic crystal Structural color Self-assembly Monodisperse nanoparticles Patterned nanostructures

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Design of a widely adjustable electrochromic device based on the reversible metal electrodeposition of Ag nanocylinders

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Nano Research 2023年第1期16卷 1421-1429页

作者： Jiangrong Zhou Yuge Han MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China

Structural colors resulting from nanostructured metallic surfaces hold a series of advantages compared to conventional chemical pigments and dyes,such as enhanced durability,tunability,scalability,and low consumption,making them particularly promising for preparing color-tunable devices.However,once these structures are fabricated,they are almost all passive devices with static nanostructures and fixed optical properties,limiting their potential applications.Here,by using a specially designed array of ordered SiO2 nanoholes as a deposition template in conjunction with the traditional reversible metal electrodeposition device(RMED),we propose a tunable reflective surface where the color of the surface can be changed as a function of the thickness of the deposited Ag nanoparticles(AgNPs).Simplified manufacturability and a large range of color tunability are achieved over previous reports by utilizing the SiO2 nanohole template,which allows the direct deposition of AgNPs while forming an array structure of Ag nanocylinders.Besides,a further thematic analysis of the physical mechanism in the proposed structure is conducted.The results show that the Structural colors induced by the longitudinal localized surface plasmon resonance(LSPR)mode can be dynamically tuned from brown to purple via increasing the deposition thickness.Additionally,in combination with SiO2 nanohole templates of varying parameters,a full gamut of colors spanning the entire visible spectrum is achieved,revealing the feasibility of utilizing the properties of the LSPR mode for satisfying various color requirements.We believe that this LSPRbased multicolor RMED design will contribute to the development of full color information displays and light-modulating devices.

关键词： Structural color dynamic color tunability nanocylinder plasmonic nanostructures

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Preparation and Optical Properties of Tunable Structural color Films on Visible and NIR Spectrum

Preparation and Optical Properties of Tunable Structural Col...

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2014中国功能材料科技与产业高层论坛

作者： Yan-cheng Ge Fen Wang Jian-feng Zhu Kai-ni An School of Materials Science and Engineering Shaanxi University of Science ＆ Technology

The monodisperse colloidal microspheres of silica were fabricated by a modified st?ber method,andtunable Structural color films were self-assemblied on the surface of glass slidebyvertical deposition method.FT-IR spectrum and XRD patterns under different heated temperatures show the powder is amorphous silica in this paper.Diameters and zeta potential values of silica colloidal microspheres increase changing with the adding amount of NaCl.The relative standard deviation of silica microsphere was improved from 6.42%to 2.73%with the differential centrifugation method.Images of SEM show the fabricated colloidal films are face centered cubic structure when there are appropriate deposition conditions.Due to the Bragg diffraction on the surface of colloidal particle arrays,the diameter of silicamicrospheresfrom 229 nm to 393 nm appear different colors ranging in entire visible spectrum from blue to red,and the diameter of a certain amount that more than 400 nm exhibit a darker blue and green colors in the near-infrared spectrum.

关键词： Photonic crystal Structural color Silica microsphere Differential centrifugation

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