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Alkyl-Decorated Fluorescent Porous polymers and Devices for Trifluralin Detection with Ultra-Sensitivity, Recognition, Visualization, Portability and Reusability

SSRN

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SSRN 2023年

作者： Li, Bin Wang, Zhonggang Department of Polymer Science and Materials School of Chemical Engineering Dalian University of Technology Dalian116024 China

The sensing materials and portable devices with high sensitivity and specific recognition are urgently demanded for monitoring and early warning the pesticide residue in soil, water and food. Herein, fluorescent micro-/mesoporous polymers with carbazole-based chromophores decorated with n-butyls are synthesized. The hierarchical pores ranging from ultramicropore to mesopore are adjustable by varying the crosslinking density in the networks. It is surprisingly found that the ﬂuorescent quenching coeﬃcient (Ksv) and limit of detection (LOD) for triﬂuralin exceptionally reach 4.57 ×105 M-1 and 6.0 ppb, respectively, which are over two orders of magnitude superior to those of the other common pesticides such as imidacloprid, lambda-cyhalothrin and cyfluthrin, and the previously reported porous materials, exhibiting ultra-sensitive recognizable ability for trifluralin in water. Moreover, the quenching efficiencies for triﬂuralin in water, aqueous solutions of various cations and anions, vegetable juice and soil filtrate remain nearly the same. In particular, the fabricated polymer plates are portable and show visual fluorescent quenching for triﬂuralin solution at an extremely low concentration, and the plates can be easily recovered and repeatedly used. The results revealed in this manuscript are helpful for deeply understanding the effects of porosity parameters and alkyl-decorated chromophore groups in fluorescent polymers on the sensitive and recognizable sensing mechanism for triﬂuralin. © 2023, The Authors. All rights reserved.

关键词： Fluorescence

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Urchin-like multiscale structured fluorinated hydroxyapatite as versatile filler for caries restoration dental resin composites

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Bioactive Materials 2024年第5期35卷 477-494页

作者： Shuning Zhang Xiao Wang Shi Yin Junjun Wang Hongyan Chen Xinquan Jiang Department of Prosthodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityShanghai Engineering Research Center of Advanced Dental Technology and MaterialsNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai Research Institute of StomatologyNo.639 Zhizaoju RoadShanghai200011China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Material Science and EngineeringDonghua UniversityShanghai201620China

Caries is one of the most prevalent human diseases,resulting from demineralization of tooth hard tissue caused by acids produced from bacteria,and can progress to pulpal *** restoration with dental resin composites(DRCs)is currently the most common treatment for ***,existing DRCs suffer from low fracture strength and lack comprehensive anti-caries bioactivity including remineralization,pulp protection,and anti-cariogenic bacteria *** this study,inspired by plant roots’ability to stabilize and improve soil,fluorinated urchin-like hydroxyapatite(FUHA)with a three-dimensional whisker structure and bioactive components of calcium,phosphorus,and fluorine was designed and synthesized by a dynamic self-assembly ***,versatile FUHA particles with different loading fractions were used as functional fillers to fabricate methacrylate-based DRCs,where the urchin-like hydroxyapatite(UHA)filled DRCs and commercial DRCs(Z350XT and BEAUTIFIL II)served as the control *** results demonstrated that FUHA with 50 wt%loading in resin matrix endowed DRC(F5)with excellent physicochemical properties,dentin remineralization property,cell viability,promotion of dental pulp stem cells mineralization,and antibacterial ***,F5 also presented good clinical handling and aesthetic ***,structure/functional-integrated FUHA filled DRCs have potential as a promising strategy for tooth restoration and anti-caries bioactivity.

关键词： Dental resin composites Anti-caries bioactivity Versatile fluorinated hydroxyapatite Micromechanical interlocking Tooth remineralization

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Enhancing photostability and power conversion efficiency of organic solar cells by a “sunscreen” ternary strategy

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science China Chemistry 2023年第4期66卷 1179-1189页

作者： Yongjie Cui Zeng Chen Peipei Zhu Wei Ma Haiming Zhu Xunfan Liao Yiwang Chen State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Materials Science and Engineering Donghua UniversityShanghai 201620China National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal UniversityNanchang 330022China Center for Chemistry of High-Performance and Novel Materials Department of ChemistryZhejiang UniversityHangzhou 310027China State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an 710049China

The field has witnessed the rapid growth in the power conversion efficiency(PCE)of organic solar cells(OSCs)over the past decade,reaching the threshold for practical ***,a major issue remains that OSC lifetimes are seriously limited by the ultraviolet(UV)-induced ***,inspired by the superior photostability of car paint under sunlight and ambient air,a“sunscreen”molecule,2-(2-hydroxy-5-tert-octylphenyl)benzotriazole(UV329),is used to construct the PM6:Y6 ternary *** addition of UV329 mainly enhances the ordered stacking of PM6 and increases the light utilization of blend films with the improved crystallization and appropriate phase ***,the ternary device exhibits stronger light response and obviously higher and more balanced carrier mobilities,contributing to higher short-circuit current density,fill factor and *** PCE boost is also verified in PM6:BTP-e C9 and PM6:L8-BO *** photodegradation of PM6 dominates the photo-degradation process of PM6:Y6 systems,while the UV329 can effectively suppress such degradation,and thus the ternary device can retain nearly 90%of the initial PCE under continuous illumination for 120 ***,ternary devices also preserve better thermal stability and shelf-life with the enhanced *** work provides a simple yet effective strategy for simultaneously improving PCE and photostability of OSCs.

关键词： ternary strategy sunscreen UV absorber photostability organic solar cells

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Effect of rare earth(Nd^(3+))metal doping on structural,morphological,optical and magnetic traits of Zn-Mg nano-ferrites

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Journal of Rare Earths 2023年第11期41卷 1763-1770,I0004页

作者： Rohit Jasrotia Nisha Kumari Ritesh Verma Suman Sachin Kumar Godara Jahangeer Ahmed Saad M.Alshehri Bidhan Pandit Sanjay Kumar Himanshi Shubham Sharma Kirti Pradip K.Maji School of Physics&Materials Science Shoolini University of Biotechnology and Management SciencesSolanHimachal Pradesh173229India Himalayan Centre of Excellence in Nanotechnology Shoolini UniversityBajholSolanH.P173229India Department of Physics Baddi University of Emerging Science and TechnologyMakhnumajraBaddiHimachal Pradesh173205India Department of Physics Amity University HaryanaGururgram122413India Department of Mathematics School of Basic and Applied SciencesMaharaja Agrasen UniversityBaddiH.P174103India Department of Apparel and Textile Technology Guru Nanak Dev UniversityAmritsar143005India Department of Chemistry College of ScienceKing Saud UniversityP.O.Box 2455Riyadh11451Saudi Arabia Department of Materials Science and Engineering and Chemical Engineering Universidad Carlos III de MadridAvenida de la Universidad 3028911LeganésMadridSpain School of Advanced Chemical Sciences Shoolini University of Biotechnology and Management SciencesSolanHimachal Pradesh173229India Dept.of Polymer&Process Engineering Indian Institute of Technology RoorkeeSaharanpurUttar Pradesh247001India

Herein,we report the synthesis of Zn_(0.7)Mg_(0.3)Nd_(x)Fe_(2-x)O_(4)(where,x=0,0,0,01,0,02)ferrite nanoparticles by employing the sol-gel auto-combustion *** X-ray diffraction(XRD)pattern suggests the formation of a pure cubic structure,without any impurity phase,with an Fd3m space group at room *** increasing doping amount,the crystallite size is reported as 35-41 nm,while the lattice parameters rise from 0.8381 to 0.8395 *** emission scanning electron microscopy(FESEM)images show the formation of spherical grains with agglomerated morphology in all the samples,with grain sizes ranging from 49 to 103 *** dispersive X-ray spectroscopy(EDX)and elemental mapping investigation confirm the chemical purity of all the *** transform infrared(FTIR)analysis shows the presence of two prominent peaks around 440 and 560 cm^(-1)that correspond to the octahedral and tetrahedral *** addition,the existence of five Raman active vibratio nal modes in all produced specimens again confirms the structural purity of all the *** M-H curve shows that saturation magnetization(M_(s))first increases from 14.98 to 28.22 emu/g and then decreases to 18.98emu/g with increasing doping *** is due to the A-B type super-exchange interaction for the synthesized *** variation in coercivity(H_(c))and magnetic anisotropy(K_(1))suggest the thermal stability of all the samples and can be utilized in transformers and solenoids.

关键词： Magnetic nanoparticles Saturation magnetization Sol-gel auto-combustion synthesis Super-exchange interaction Cubic crystal structure Rare earths

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Colloidal interactions to generate novel coatings

Colloidal interactions to generate novel coatings

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TAPPICon Virtual 2021

作者： Rao, Pradnya Tripp, Carl Bousfield, Doug Department of Chemical and Biomedical Engineering Paper Surface Science Program University of Maine

Latex is a high cost component • Need to use it effectively Prevent or reduce binder migration by attaching latex to the pigment Novel coating structures may be possible that "retain" binder with coating pig... 详细信息

ISBN: (纸本)9781713829683

关键词： Coatings

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A Novel Fiber-Reinforced Composites Manufacting System Development multi-Drop Filling 23

A Novel Fiber-Reinforced Composites Manufacting System Devel...

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23rd International Conference on Composite Materials, ICCM 2023

作者： Kang, Seung In Yoo, Jung Jae Kim, Min Gyoung Seong, Dong Gi School of Chemical Engineering Pusan National University Busandaehak-ro 63beon-gil 2 Geumjeong-gu Busan Korea Republic of Department of polymer science and engineering Pusan National University Busandaehak-ro 63beon-gil 2 Geumjeong-gu Busan Korea Republic of

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Electroactive polymeric nanofibrous composite to drive in situ construction of lithiophilic SEI for stable lithium metal anodes

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escience 2022年第2期2卷 192-200页

作者： Ai-Long Chen Nan Shang Yue Ouyang Lulu Mo Chunyang Zhou Weng Weei Tjiu Feili Lai Yue-E Miao Tianxi Liu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620PR China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi214122PR China Department of Chemistry KU LeuvenCelestijnenlaan 200FLeuven3001Belgium Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A^(*)STAR)2 Fusionopolis Way138634Singapore

Uncontrolled lithium dendrite growth hinders the practical application of lithium metal batteries(LMBs).Herein,we report a novel Li^(+) flux distributor achieved by placing an electroactive polyvinylidene fluoride/polymethyl methacrylate(PVDF/PMMA)composite nanofiber interlayer on a current collector,inducing uniform lithium deposition to mitigate the dendrite ***,the released PMMA reacts with Liþto form abundant C–O–Li bonds and generate in situ a stable lithiophilic PMMA-Li solid electrolyte interphase *** calculations reveal that polar C–F groups in the PVDF framework and lithiophilic PMMA-Li provide homo-dispersed Li^(+) migration pathways with low energy ***,uniform Li nucleation is achieved at the molecular level,resulting in ultrahigh cycling stability with dendrite-free Li deposition at 5 mA cm^(-2) and 5 mAh cm^(-2)for over 500 *** PVDF/PMMA||Li||LiFePO_(4)(LFP)full cell presents an increased rate capacity of 110 mAh g^(-1) at 10 *** addition,a soft-package battery demonstrates a high energy density of 289 Wh kg^(-1).This work provides a facile design for stable lithium metal anodes to promote the practical use of LMBs and other alkali metal batteries.

关键词： Electroactive polymer nanofibers Electrospinning Li^(+)flux regulation Dendrite-free Lithium metal battery

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Ionic Liquid Assisted Imprint for Efficient and Stable Quasi-2D Perovskite Solar Cells with Controlled Phase Distribution

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Nano-Micro Letters 2023年第7期15卷 1-15页

作者： Haibin Peng Dengxue Li Zongcai Li Zhi Xing Xiaotian Hu Ting Hu Yiwang Chen Department of Polymer Materials and Engineering School of Physics and Materials ScienceNanchang University999 Xuefu AvenueNanchang 330031People’s Republic of China College of Chemistry and Chemical Engineering Institute of Polymers and Energy Chemistry(IPEC)Nanchang University999 Xuefu AvenueNanchang 330031People’s Republic of China National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of EducationJiangxi Normal University99 Ziyang AvenueNanchang 330022People’s Republic of China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010People’s Republic of China

Although two-dimensional perovskite devices are highly stable,they also lead to a number of *** instance,the introduction of large organic amines makes crystallization process complicated,causing problems such as generally small grain size and blocked charge *** this work,imprint assisted with methylamine acetate were used to improve the morphology of the film,optimize the internal phase distribution,and enhance the charge transfer of the perovskite ***,imprint promoted the dispersion of spacer cations in the recrystallization process with the assistance of methylamine acetate,thus inhibited the formation of low-n phase induced by the aggregation of spacer cations and facilitated the formation of 3D-like *** this case,the corresponding quasi-2D perovskite solar cells delivered improved efficiency and exhibited superior *** work provides an effective strategy to obtain uniform phase distribution for quasi-2D perovskite.

关键词： Imprint Two-dimensional perovskite Phase distribution Charge transfer Stability

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Hydrogel derived from water hyacinth and pectin from banana peel as a membrane layer

Hydrogel derived from water hyacinth and pectin from banana ...

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3rd International Conference on chemical engineering and Applied sciences, ICChEAS 2022

作者： Elma, Muthia Kadek Devi Ananda Saraswati, Ni Fransiska Afrida Simatupang, Paskah Febriyanti, Retno Rahma, Aulia Ria Mustalifah, Fitri Chemical Engineering Department Engineering Faculty Lambung Mangkurat University Jl A. Yani Km 36 South Kalimantan Banajrbaru70714 Indonesia Magister Program of Chemical Engineering Faculty of Engineering Lambung Mangkurat University Jl. A. Yani KM 36 Banjarbaru70714 Indonesia Doctoral Program of Environemntal Science Postgraduate Program Lambung Mangkurat University Jl Brigjen H. Hasan Basri Kayutangi South Kalimantan Banjarmasin70123 Indonesia Lambung Mangkurat University Jl. A. Yani KM 36 Banjarbaru70714 Indonesia

Hydrogels is a unique material that affordable to apply as a membranes layer. In tropical country, such as Indonesia there is easily found water hyacinth (a weed plant) which is potentially used for hydrogels materials fabrication due to high cellulose content. Carboxymethyl cellulose (CMC) from water hyacinth cellulose and banana peels pectin are used to produce hydrogel for ultrafiltration membrane. The aims of this study are to characterize the functionalization of CMC-pectin membrane with different ratio using Fourier transform infrared spectroscopy (FTIR) and to determines the morphology of its membranes structure. The CMC was synthesized from water hyacinth stems through carboxymethylation. The functionalization group of multiple CMC-pectin membrane ratio is domination with carboxyl group (COO-), carbonyl stretching and carbon group. Meanwhile, CMC-pectin 70:30 wt% ratio displays not smooth structure. There is a water hyacinth stems extracted cellulose fibre on the surface of hydrogel CMC:pectin membrane. In other hand, the addition of pectin in all ratio variation exhibit increasing contact angle number from 63.98° to 68.16° (0-30 wt% pectin). The existence of pectin from banana peels on hydrogel membranes contributes to increase hydrophobicity of hydrogel-membrane, in spite of the contact angle value is below than 90°. © 2023 Elsevier Ltd. All rights reserved.

关键词： Membranes

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Systematic designs of single metal compounds synthesized using ammonia fluoride-based complex as structure directing agents for energy storage

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Journal of Colloid and Interface science 2023年第PartA期652卷 294-304页

作者： Kuo, Tsung-Rong Zher Yu, You Wu, Chung-Hsien Lee, Pin-Yan Kongvarhodom, Chutima Chen, Hung-Ming Husain, Sadang Yougbaré, Sibidou Lin, Lu-Yin International PhD Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Graduate Institute of Nanomedicine and Medical Engineering College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Department of Chemical Engineering and Biotechnology National Taipei University of Technology Taipei Taiwan Department of Chemical Engineering King Mongkut's University of Technology Thonburi 126 Pracha-u-thit Toong-kru Bangkok10140 Thailand Gingen technology Co. LTD. Rm. 7 10F. No.189 Sec. 2 Keelung Rd. Xinyi Dist. Taipei11054 Taiwan Department of Physics Faculty of Mathematics and Natural Science Lambung Mangkurat University Banjarmasin70124 Indonesia /Nanoro 03 B.P 7192 Ouagadougou 03 Burkina Faso

Tailoring morphology and composition of metal organic frameworks (MOF) can improve energy storage by establishing high surface area, large porosity and multiple redox states. Structure directing agents (SDA) is functional of designing surface properties of electroactive materials. Ammonium fluoride has functional abilities for designing MOF derivatives with excellent energy storage abilities. Systematic design of MOF derivatives using ammonia fluoride-based complex as SDA can essentially create efficient electroactive materials. Metal species can also play significant roles on redox reactions, which are the main energy storage mechanism for battery-type electrodes. In this work, 2-methylimidazole, two novel SDAs of NH4BF4 and NH4HF2, and six metal species of Al, Mn, Co, Ni, Cu and Zn are coupled to synthesize MOF derivatives for energy storage. Metal species-dependent compositions including hydroxides, oxides, and hydroxide nitrates are observed. The nickel-based derivative (Ni-HBF) shows the highest specific capacitance (CF) of 698.0F/g at 20 mV/s, due to multiple redox states and advanced flower-like surface properties. The diffusion and capacitive-control contributions of MOF derivatives are also analyzed. The battery supercapacitor hybrid with Ni-HBF electrode shows a maximum energy density of 27.9 Wh/kg at 325 W/kg. The CF retention of 170.9% and Coulombic efficiency of 93.2% are achieved after 10,000 cycles. © 2023 Elsevier Inc.

关键词： Supercapacitor

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