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Controlled Assembly of Luminescent Lanthanide‑Organic Frameworks via Post‑Treatment of 3D‑Printed Objects

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Nano-Micro Letters 2021年第1期13卷 303-316页

作者： Jiahui Huang peiyi wu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai 200433People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyCenter for Advanced Low‑Dimension MaterialsDonghua UniversityShanghai 201620People’s Republic of China

Complex multiscale assemblies of metal-organic frameworks are essential in the construction of largescale optical platforms but often restricted by their bulk nature and conventional *** integration of nanomaterials and 3D printing technologies allows the fabrication of multiscale functional *** study reports a unique method of controlled 3D assembly purely relying on the post-printing treatment of printed *** immersing a 3D-printed patterned construct consisting of organic ligand in a solution of lanthanide ions,in situ growth of lanthanide metal-organic frameworks(LnMOFs)can rapidly occur,resulting in macroscopic assemblies and tunable fluorescence *** phenomenon,caused by coordination and chelation of lanthanide ions,also renders a sub-millimeter resolution and high shape *** a proof of concept,a type of 3D assembled LnMOFsbased optical sensing platform has demonstrated the feasibility in response to small molecules such as *** is anticipated that the facile printing and design approach developed in this work can be applied to fabricate bespoke multiscale architectures of functional materials with controlled assembly,bringing a realistic and economic prospect.

关键词： 3D printing Luminescent lanthanide-organic frameworks Macroscopic assembly In situ growth Optical sensing

Hierarchical Network-Augmented Hydroglasses for Broadband Light Management

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Research 2021年第1期2021卷 195-206页

作者： Zhouyue Lei Baohu wu peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyCenter for Advanced Low-Dimension MaterialsDonghua UniversityShanghai 201620China John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA Jülich Centre for Neutron Science(JCNS)at Heinz Maier-Leibnitz Zentrum(MLZ)Forschungszentrum Jülich Lichtenbergstr.185748 GarchingGermany

Light management is essential for military stealth,optical information communication,and energy-efficient ***,current light management materials face challenges of limited optical modulation range and poor mechanical ***,we report a locally confined polymerization(LCP)approach to develop hierarchical network-augmented hydroglasses(HNAH)based on poly(methacrylic acid)for broadband light management as well as mechanical *** dynamic geometry of the networks ranging from nano-to micro-scale enables to manage the light wavelength over three orders of magnitude,from the ultraviolet(UV)to infrared(IR)band,and reversibly switches transmittance in the visible region.A smart hydroglass window is developed with elasticity,outstanding robustness,self-healing,notch resistance,biosafety by blocking UV radiation,and high solar energy shielding efficacy with a temperature drop of 13℃.Compared to current inorganic glasses and Plexiglas,the hydroglass not only is a promising and versatile candidate but also provides novel insights into the molecular and structural design of broadband light management and optimized mechanical properties.

关键词： glasses versatile ultraviolet

Bio-derived crystalline silk nanosheets for versatile macroscopic assemblies

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Nano Research 2022年第6期15卷 5538-5544页

作者： Baochang Cheng Zhouyue Lei peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyCenter for Advanced Low-Dimension MaterialsDonghua UniversityShanghai 201620China John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai 200433China

Silk fibroin with sophisticated hierarchical architectures from nano to macro scale shows excellent mechanical properties,good biocompatibility,and outstanding *** particular,the crystalline region in silk fibroin contributes high strength and ***,it is difficult to obtain the crystalline silk nanofibrils or nanosheets through top-down *** existing silk-derived components are mainly amorphous and sacrifice the delicate structure of the pristine ***,we report a gentle method to extract the crystalline silk nanosheet(SNS)from the degummed silk *** crystalline SNS has seven strands ofβ-sheet nanocrystal layer and shows a thickness of 2.75 *** can assemble into a membrane via a vacuum filtration process and shows high transparency,excellent thermal stability,outstanding cytocompatibility,and efficient dye ***,without external stimuli,the crystalline SNS is capable of reversibly self-assembling to well-organized *** crystalline SNS is not only a new member of silk fibroin derivatives,but also a promising assemblable unit for versatile *** anticipate this work will provide a new insight into the construction and applications of diverse two-dimensional(2D)functional silk materials.

关键词： silk fibroin hierarchical structure top-down exfoliation crystalline nanosheet reversible self-assembly

Interfacially stable MOF nanosheet membrane with tailored nanochannels for ultrafast and thermo-responsive nanofiltration

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Nano Research 2020年第11期13卷 2973-2978页

作者： Wei Jia Baohu wu Shengtong Sun peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyCenter for Advanced Low-dimension MaterialsDonghua UniversityShanghai201620China State Key Laboratory of Macromolecular Engineering of Polymers Department of Macromolecular ScienceFudan University2205 Songhu RoadShanghai200433China Jülich Centre for Neutron Science(JCNS)at Heinz Maier-Leibnitz Zentrum(MLZ)Forschungszentrum Jülich Lichtenbergstr.185748GarchingGermany

Two-dimensional nanosheet membranes with responsive nanochannels are appealing for controlled mass transfer/separation,but limited by everchanging thicknesses arising from unstable ***,an interfacially stable,thermo-responsive nanosheet membrane is assembled from twin-chain stabilized metal-organic framework(MOF)nanosheets,which function via two cyclic amide-bearing polymers,thermo-responsive poly(N-vinyl caprolactam)(PVCL)for adjusting channel size,and non-responsive polyvinylpyrrolidone for supporting constant interlayer *** to the microporosity of MOF nanosheets and controllable interface wettability,the hybrid membrane demonstrates both superior separation performance and stable *** and correlation spectroscopic analyses further corroborate the respective roles of the two polymers and reveal the microenvironment changes of nanochannels are motivated by the dehydration of PVCL chains.

关键词： metal-organic framework(MOF)nanosheet membrane thermo-responsiveness molecular separation infrared(IR)spectroscopy

Nafion-assisted exfoliation of MoS2 in water phase and the application in quick-response NIR light controllable multi-shape memory membrane

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Nano Research 2018年第1期11卷 542-553页

作者： Wei Jia Beibei Tang peiyi wu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai200433 China

In the current study, Nation is adopted as a dispersant for assisting the water- phase exfoliation of MoS2. The completely ionized hydrophilic sulfonic groups and hydrophobic polytetrafluoroethylene backbone permit strong non-covalent bonding interactions between Nation and exfoliated nanosheets for stabilization and functionalization to obtain Nation-modified MoS2 （N-MoS2） nanocomposites. These interactions are stable in different pH environments. The concentration of Nation influences the exfoliation efficiency and the size of the exfoliated nanosheets. N-MoSdNation composite membranes are prepared. The N-MoS2 nanocomposite exhibits good dispersibility in a Nation matrix, benefitting from the functionalization of Nation. The N-MoSdNafion composite membrane shows excellent near-infrared light-controllable multi-shape-memory performance with convenient operation. The Nation-assisted water-phase exfoliation method shows good efficiency, convenient operation, environmental benignity, and broad application potential.

关键词： Nation MoS2 exfoliation multi-shape memorymembrane

A breakthrough in fabric cleaning: coating-at-will concept for stainproof fabrics

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Science China Chemistry 2024年第3期67卷 744-745页

作者： Zhouyue Lei peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry and Chemical EngineeringDonghua UniversityShanghai 201620China

Surfactants are extensively used in daily life and industrial production, posing significant challenges to global sustainability. Household detergents, including dishwashing detergents and laundry, alone account for o... 详细信息

关键词： breakthrough proof coating

Mechanoadaptive morphing gel electrolyte enables flexible and fast-charging Zn-ion batteries with outstanding dendrite suppression performance

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Nano Research 2022年第3期15卷 2030-2039页

作者： Faqing Cao Baohu wu Tianyu Li Shengtong Sun Yucong Jiao peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology&Center for Advanced Low-dimension MaterialsDonghua UniversityShanghai 201620China Jülich Centre for Neutron Science(JCNS)at Heinz Maier-Leibnitz Zentrum(MLZ)Forschungszentrum Jülich Lichtenbergstr.185748 GarchingGermany Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

The safe,flexible,and environment-friendly Zn-ion batteries have aroused great interests ***,flagrant Zn dendrite uncontrollably grows in liquid electrolytes due to insufficient surface protection,which severely impedes the future applications of Zn-ion batteries especially at high current *** electrolytes are emerging to tackle this issue,yet the required high modulus for inhibiting dendrite growth as well as concurrent poor interfacial contact with roughened Zn electrodes are not easily reconcilable to regulate the fragile Zn/Zn^(2+) *** we demonstrate,such a conflict may be defeated by using a mechanoadaptive cellulose nanofibril-based morphing gel electrolyte(MorphGE),which synergizes bulk compliance for optimizing interfacial contact as well as high modulus for suppressing dendrite ***,by anchoring desolvated Zn^(2+) on cellulose nanofibrils,the side reactions which induce dendrite formation are also significantly *** a result,the MorphGE-based symmetrical Zn-ion battery demonstrated outstanding stability for more than 100 h at the high current density of 10 mA·cm^(−2) and areal capacity of 10 mA·h·cm^(−2),and the corresponding Zn-ion battery delivered a prominent specific capacity of 100 mA·h·g^(−1) for more than 500 cycles at 20 *** present example of engineering the mechanoadaptivity of gel electrolytes will shed light on a new pathway for designing highly safe and flexible energy storage devices.

关键词： Zn-ion batteries dendrite growth interfacial adaptivity gel electrolytes fast-charging

A sustainable, ultratough, and ready-to-use adhesive heating patch driven by solar/electric dual energy

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SusMat 2021年第4期1卷 545-557页

作者： Jiqiang Wang Shengtong Sun peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and Biotechnology&Center for Advanced Low-dimension MaterialsDonghua UniversityShanghaiP.R.China

Developing a versatile and durable photothermal coating is of great interest for the future large-scale utilization of abundant solar ***,existing photothermal coatings that rely on the assembly of rigid solar absorbing nano-materials have often limitations in both mechanical robustness and multienergy coupling for sustainable ***,we report a ready-to-use and ultratough adhesive heating patch with the integrated abilities of photo-/electrothermal conversion and damage *** patch is composed of interconnected carbon microfibers filtrated with photo-curable self-adhesive resin that can readily stick on the substrate,and postcuring rapidly toughens the patch resulting in high mechanical toughness(9.1 MJ/m^(3)),high electrical conductivity(5 S/cm),strongadhesion(0.7-4.6MPa),as well as high solar-thermal conversion(∼85.3%)and Joule heating(81.6◦C/W)*** demonstrate its application,the adhered patch on oil pipelines can rapidly reduce the viscosity of heavy crude oil to∼100Pa s under the action of solar radiation or Joule heating,allowing for oil’s easy flow in pipelines in all-weather and,thus,alleviating the use of expensive fired heaters at heating stations.

关键词： adhesion damage diagnosis Joule heating photothermal conversion solar energy

Readily prepared and processed multifunctional MXene nanocomposite hydrogels for smart electronics

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SmartMat 2024年第2期5卷 103-114页

作者： Jiahui Huang Xianwu Huang peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry and Chemical EngineeringCenter for Advanced Low-Dimension MaterialsDonghua UniversityShanghaiChina State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghaiChina

Booming sophisticated robotics and prosthetics put forward high requirements on soft conductive materials that can bridge electronics and biology,those soft conductive materials should imitate the mechanical properties of biological tissues and build information transmission *** now,it remains a great challenge to handle the trade-off among ease of preparation,high conductivity,processability,mechanical adaptability,and external stimuli ***,a kind of readily prepared and processed multifunctional MXene nanocomposite hydrogel is reported,which is prepared via the fast gelation of cationic monomer initiated by delaminated MXene *** gelation time can be adjusted(several seconds to minutes)based on the MXene *** adjusting the MXene ratio,the resulting nanocomposites are ultrastretchable(>5000%),three-dimensional(3D)printable,and show outstanding mechanical and electrical *** expected,the integration of multifunctional systems onto various substrates(e.g.,gloves and masks)is further demonstrated via 3D printing and could achieve diverse sensory capabilities toward strain,pressure,and temperature,showing great prospects as smart flexible electronics.

关键词： 3D printable electronics MXene polymeric hydrogels stretchable and conductive