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Recent development in multizonal scaffolds for osteochondral regeneration

Bioactive Materials 2023年第7期25卷 122-159页

作者： Le Yu Sacha Cavelier Brett Hannon Mei Wei Department of Chemical and Biomolecular Engineering Ohio UniversityAthensOH45701USA Biomedical Engineering Program Ohio UniversityAthensOH45701USA Department of Mechanical Engineering Ohio UniversityAthensOH45701USA

Osteochondral(OC)repair is an extremely challenging topic due to the complex biphasic structure and poor intrinsic regenerative capability of natural osteochondral *** contrast to the current surgical approaches which yield only short-term relief of symptoms,tissue engineering strategy has been shown more promising outcomes in treating OC defects since its emergence in the *** particular,the use of multizonal scaffolds(MZSs)that mimic the gradient transitions,from cartilage surface to the subchondral bone with either continuous or discontinuous compositions,structures,and properties of natural OC tissue,has been gaining momentum in recent *** the latest developments in the field,this review offers a comprehensive summary of recent advances,current hurdles,and future perspectives of OC repair,particularly the use of MZSs including bilayered,trilayered,multilayered,and gradient scaffolds,by bringing together onerous demands of architecture designs,material selections,manufacturing techniques as well as the choices of growth factors and cells,each of which possesses its unique challenges and opportunities.

关键词： Multizonal scaffolds Osteochondral regeneration Fabrication Cells Growth factors

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Rechargeable Multivalent-Ion Batteries

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Energy Material Advances 2024年第1期5卷 283-284页

作者： Juchen Guo Jennifer LSchaefer Yuyan Shao Department of Chemical and Environmental Engineering Materials Science and Engineering ProgramUniversity of CaliforniaRiversideRiversideCA 92521USA Department of Chemical and Biomolecular Engineering University of Notre DameNotre DameIN 46556USA Pacific Northwest National Laboratory RichlandWA 99352USA

Rechargeable batteries based on multivalent metal anodes including earth-abundant magnesium(Mg),calcium(Ca),zinc(Zn),and aluminum(Al)are potential new“beyond lithium(Li)”electrochemical energy storage technologies for large-scale energy storage *** multivalent elements are more earth abundant,and therefore promising candidates for reducing global dependence on Li for our growing energy storage *** the seminal work by Aurbach and coworkers[1]demonstrating the first prototype rechargeable Mg batteries,tremendous efforts have been made to the research and development of rechargeable multivalent-ion batteries.

关键词： energy storage calcium batteries rechargeable batteries multivalent elements multivalent metal anodes energy storage technologies magnesium batteries

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Ultralong thermally activated delayed fluorescence based on intermolecular charge transfer induced by isomer in carbazole derivative

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Aggregate 2024年第6期5卷 392-399页

作者： Junru Chen Xianhe Zhang Zongliang Xie Bin Liu Department of Chemical and Biomolecular Engineering National University of SingaporeSingaporeSingapore Integrative Sciences and Engineering Program NUS Graduate SchoolNational University of SingaporeSingaporeSingapore Institute for Functional Intelligent Materials National University of SingaporeSingaporeSingapore

Ultralong thermally activated delayed fluorescence(UTADF)materials play an important role in realizing time-dependent color-tunable *** typical carbazole(Cz)derivatives have been reported to exhibit UTADF ***,a 10-fold difference in TADF lifetime was found between commercial Cz derivatives and the corresponding lab-synthesized ones,which indicated that UTADF may not be derived from the single Cz derivatives as *** reveal the real mechanism,we synthesized three Cz derivatives and one isomer to form three host-guest pairs for optical *** photophysical properties revealed that UTADF originated from the intermolecular charge transfer between host and guest,while the ultralong organic phosphorescence was from the *** to the rich color variations in luminescence displayed by 4-(1H-benzo[f]indol-1-yl)−4′-(9H-carbazol-9-yl)-[1,1′-biphenyl]−3,3′-dicarbonitrile/4,4′-di(9H-carbazol-9-yl)-[1,1′-biphenyl]−3,3′-dicarbonitrile(CBP-2CN)at different delay times,it can be applied to realize multi-dimensional encryption in both delay time and luminescent color.

关键词： energy transfer intermolecular charge transfer ultralong organic phosphorescence ultralong thermally activated delayed fluorescence

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Bio-inspired Smart Composites with Multi-scale Architecture and Surface engineering 23

Bio-inspired Smart Composites with Multi-scale Architecture ...

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23rd International Conference on Composite Materials, ICCM 2023

作者： Zeng, Songshan Shen, Kuangyu Li, Rui Smith, Andrew Zhang, Dianyun Sun, Luyi Polymer Program Institute of Materials Science Department of Chemical & Biomolecular Engineering University of Connecticut United States

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Micro-computed tomography utility for estimation of intraparenchymal spinal cord cystic lesions in small animals

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Neural Regeneration Research 2021年第11期16卷 2293-2298页

作者： Mahmoud Farrag Dipak D.Pukale Nic D.Leipzig Integrated Bioscience Program The University of AkronAkronOHUSA Department of Chemical Biomolecularand Corrosion EngineeringThe University of AkronAkronOHUSA Department of Chemical Biomolecularand Corrosion EngineeringIntegrated Bioscience ProgramThe University of AkronAkronOHUSA

Precise assessment of spinal cord cystic lesions is crucial to formulate effective therapeutic strategies,yet histological assessment of the lesion remains the primary method despite numerous studies showing inconsistent results regarding estimation of lesion size via *** the other hand,despite numerous advances in micro-computed tomography(micro-CT)imaging and analysis that have allowed precise measurements of lesion size,there is not enough published data on its application to estimate intraspinal lesion size in laboratory animal *** work attempts to show that micro-CT can be valuable for spinal cord injury research by demonstrating accurate estimation of syrinx size and compares between micro-CT and traditional histological *** used a post-traumatic syringomyelia rat model to compare micro-CT analysis to conventional histological *** study showed that micro-CT can detect lesions within the spinal cord very similar to ***,micro-CT appears to provide more accurate estimates of the lesions with more measures(e.g.,surface area),can detect compounds within the cord,and can be done with the tissue of interest(spinal cord)*** summary,the experimental work presented here provides one of the first investigations of the use of micro-CT for estimating the size of intraparenchymal cysts and detecting materials within the spinal *** animal procedures were approved by the University of Akron Institutional Animal Care and Use Committee(IACUC)(protocol#LRE 16-05-09 approved on May 14,2016).

关键词： cyst size histology intraparenchymal cysts lesion size estimate micro-CT post-traumatic syringomyelia spinal cord imaging spinal cord injury spinal cystic lesion syrinx

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MXene:From synthesis to environment remediation

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Chinese Journal of Chemical engineering 2023年第9期61卷 260-280页

作者： Ali Nikkhah Hasan Nikkhah Hadis langari Alireza Nouri Abdul Wahab Mohammad Ang Wei Lun Ng law Yong Rosiah Rohani Ebrahim Mahmoudi Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Department of Mechanical and Aerospace Engineering University at BuffaloBuffaloUSA Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsUSA Department of Chemistry and Medicinal Chemistry University at BuffaloBuffaloUSA Chemical and Water Desalination Engineering Program College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates Lee Kong Chian Faculty of Engineering and Science Universiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongKajangSelangorMalaysia

A new burgeoning family of two-dimensional(2D)transition metal carbides/nitrides,better known as MXenes,have received extensive attention because of their distinct properties,such as metallic conductivity,good hydrophilicity,large surface area,good mechanical stability,and *** 40 different MXenes have been synthesized,and dozens more structures and properties have been theoretically ***,the recent progress in MXenes development is not well covered in chronological order based on different *** review article focuses on emerging synthesis methods,the properties of MXenes,and mainly the applications of MXenes and MXene-based material family in environmental remediation,a comprehensive review of gaseous and aqueous pollutants treatment.

关键词： MXene 2D materials Wastewater treatment CO_(2)capture Adsorption Photodegradation

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Assembly of exfoliated α-zirconium phosphate nanosheets:Mechanisms and versatile applications

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Aggregate 2022年第4期3卷 41-60页

作者： Hao Ding Abbas Ahmed Kuangyu Shen Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticutUSA Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsConnecticutUSA Department of Biomedical Engineering University of ConnecticutStorrsConnecticutUSA

α-Zirconium phosphate(Zr(HPO_(4))_(2)⋅H_(2)O,α-ZrP)is an inorganic layered *** the first report of crystallineα-ZrP in 1964,thanks to its simple synthesis and unique physiochemical properties,α-ZrP has found widespread application in many fields including mechanical reinforcing,barrier improvement,flame retardancy,anticorrosion,catalysis,environment,energy,and *** of the ease of exfoliation ofα-ZrP to obtain single-layer nanosheets,as well as its rich surface chemistry thanks to the high density of orderly arranged surface acidic hydroxyl groups,α-ZrP single-layer nanosheets are ideal building blocks for self-assembly or assembly with other *** assembly ofα-ZrP nanosheets could form a randomly dispersed structure(isotropic),roughly ordered structure(nematic),or highly ordered structure(smectic)within liquid colloids or solid hybrids(including hydrogels).Thanks to the combination of the unique structures and the novel functions of the components,the assembled materials have found a wide verity of applications due to their excellent *** this article,the methods to synthesizeα-ZrP,the approaches and mechanisms to exfoliateα-ZrP,and the strategies to assembleα-ZrP nanosheets to form various structures,as well as the applications of the assembled materials are *** emerging prospects ofα-ZrP nanosheets as a key material in next-generation functional applications are envisioned.

关键词： application assembly exfoliation nanosheets α-zirconium phosphate

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Modelling the development of biological structures displaying longitudinal geometries in vitro:culturing pluripotent stem cells on plasma-treated,growth factor-coupled polycaprolactone fibres

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Engineered Regeneration 2024年第1期5卷 124-138页

作者： Badwi B.Boumelhem Stuart T.Fraser Syamak Farajikhah Rachel A.Shparberg Michael B.Morris Marcela M.M.Bilek Anyu Zhang Behnam Akhavan Simon Fleming Maryanne Large School of Physics Faculty of ScienceUniversity of SydneyAustralia Sydney Nano Institute University of SydneyAustralia School of Chemical and Biomolecular Engineering University of SydneyAustralia School of Medical Sciences Faculty of Medicine and HealthUniversity of SydneyAustralia School of Biomedical Engineering Faculty of EngineeringUniversity of SydneyAustralia School of Engineering University of NewcastleCallaghanNSW 2308Australia Hunter Medical Research Institute(HMRI) Precision Medicine ProgramNew Lambton Heights NSW 2305Australia

Many biological structures such as nerves,blood and lymphatic vessels,and muscle fibres exhibit longitudinal ge-ometries with distinct cell types extending along both the length and width of internal linear *** these three-dimensional structures in vitro is challenging:the best-defined stem-cell differentiation systems are mono-layer cultures or organoids using pluripotent stem *** stem cells can differentiate into functionally mature cells depending on the signals received,holding great promise for regenerative ***,the integration of in vitro differentiated cell types into diseased tissue remains a *** scaffolds can bridge this gap if the appropriate signalling systems are incorporated into the ***,we have taken a biomimicry approach to generate longitudinal structures in *** this approach,mouse embryonic stem cells are directed to differentiate to specific cell types on the surface of polycaprolactone(PCL)fibres treated by plasma-immersion ion implantation and to which with lineage-specifying molecules have been covalently *** demonstrate the simplicity and utility of our method for efficiently generating high yields of the following cell types from these pluripotent stem cells:neurons,vascular endothelial cells,osteoclasts,adipocytes,and cells of the erythroid,myeloid,and lymphoid *** arranged plasma-treated scaffolds with differentiated cell types could ultimately serve as a means for the repair or treatment of diseased or damaged tissue.

关键词： Pluripotent stem cells Lineage commitment Growth factors Biomaterial engineering Plasma-immersion ion implantation Covalent biomolecule attachment Polycaprolactone

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Ultra-transparent nanostructured coatings via flow-induced one-step coassembly

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Nano Materials Science 2022年第2期4卷 97-103页

作者： Jingjing Liu Sonia E.Chavez Hao Ding Maria M.Farooqui Zaili Hou Sharon Lin Thomas D.D'Auria Julia M.Kennedy Anna Marie LaChance Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticut06269United States Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsConnecticut06269United States Department of Biomedical Engineering University of ConnecticutStorrsConnecticut06269United States

Polyvinyl alcohol(PVA)/laponite(LP)nanocomposite coatings were fabricated via a facile one-step coassembly *** formed nanocoatings contain a high concentration of LP nanosheets,which can be well aligned along the substrate surface during the coassembly *** to the highly orientated structure,the flexible nanocoatings exhibit ultra-high transparency and superior mechanical properties,and can also act as excellent gas *** nanocoatings can be exceptional candidates for a variety of applications,such as food packaging.

关键词： Nanocoating Coassembly Polyvinyl alcohol Laponite

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Smart Soft Materials with Multiscale Architecture and Dynamic Surface Topographies

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Accounts of Materials Research 2022年第11期3卷 1115-1126页

作者： Songshan Zeng Andrew T.Smith Kuangyu Shen Luyi Sun Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United StatesPresent Address:Macao Institute of Materials Science and Engineering(MIMSE)Zhuhai MUST Science and Technology Research InstituteFaculty of Innovation EngineeringMacao University of Science and TechnologyTaipa999078MacaoChina Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United States

CONSPECTUS:Smart soft materials have one or more characteristics that can be significantly altered in convertible fashions by external stimuli,such as light,moisture,mechanical force,temperature,electric/magnetic fields,pH,and so *** materials can lead to widespread application in multifunctional smart ***,various smart soft materials have been developed under the inspiration of the intriguing multiscale structures,adaptive mechanisms,and dynamic responses of natural life,with an aim to further design advanced material systems with novel,intriguing,and unprecedented properties.

关键词： Smart properties. Dynamic

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