Particle & Particle Systems Characterization最新文献_第9页

Twisted Bilayer Graphene: A Journey Through Recent Advances and Future Perspectives 扭曲双层石墨烯:通过最近的进展和未来的展望之旅

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-10-12 DOI: 10.1002/ppsc.202300125

R. Ajay Rakkesh, P. N. Blessy Rebecca, T. B. Naveen, D. Durgalakshmi, S. Balakumar

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Dual Stimuli‐Responsive Ternary Core‐Shell Polystyrene@Pnipam‐Pedot Latexes 双重刺激-响应三元核-壳Polystyrene@Pnipam - Pedot乳胶

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-10-12 DOI: 10.1002/ppsc.202300096

Lyudmyla O. Vretik, Yuriy V. Noskov, Oksana M. Chepurna, Nikolay A. Ogurtsov, Olena A. Nikolaeva, Andrii I. Marynin, Tymish Y. Ohulchanskyy, Alexander A. Pud

{"title":"Dual Stimuli‐Responsive Ternary Core‐Shell Polystyrene@Pnipam‐Pedot Latexes","authors":"Lyudmyla O. Vretik, Yuriy V. Noskov, Oksana M. Chepurna, Nikolay A. Ogurtsov, Olena A. Nikolaeva, Andrii I. Marynin, Tymish Y. Ohulchanskyy, Alexander A. Pud","doi":"10.1002/ppsc.202300096","DOIUrl":"https://doi.org/10.1002/ppsc.202300096","url":null,"abstract":"Abstract The ability of stimuli‐responsive materials to respond to external stimuli depends on their intra‐ and intermolecular interactions, which, in turn, are governed by changes in the material composition. Here, the importance of these factors for new heat and light‐sensitive latexes of core‐shell nanoparticles is reported with the polystyrene core, the poly(N‐isopropylacrylamide) (PNIPAM) shell containing doped poly(3,4‐ethylenedioxythiophene) (PEDOT). It is found that hydrogen bonding, C═O─π aromatic, hydrophilic‐hydrophobic interactions in the shell cause conformational changes in PNIPAM similar to those occurring in the PNIPAM coil‐globule transition. Depending on the EDOT:PS@PNIPAM feed ratio and the PEDOT content in PNIPAM shells, these interactions and changes affect nanoparticle sizes and are responsible for shifting the lower critical solution temperature (LCST) of PNIPAM in the shell from 32.1 to 33.9 °C. The core‐shell morphology of nanoparticles is maintained only for latexes with EDOT feed to ≈9 wt.%. At the higher EDOT content, PNIPAM shells are destroyed. Synthesized PS@PNIPAM‐PEDOT latexes demonstrate temperature‐dependent behavior and produce a photothermal effect under NIR irradiation, which allows for a rise of their temperature above LCST. This dual stimuli (heat and light) responsiveness suggests an important possibility for these latexes to be used for drug or diagnostic agent delivery.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136013289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Masthead: (Part. Part. Syst. Charact. 10/2023) 刊头：（Part.Part.Syst.Charact.10/2023）

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-10-01 DOI: 10.1002/ppsc.202370020

引用次数: 0

(Part. Part. Syst. Charact. 10/2023) (Part.Part.Syst.Charact.10/2023)

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-10-01 DOI: 10.1002/ppsc.202370019

引用次数: 0

Hyperspectral Imaging as a Facile and Non‐Destructive Method for Size Analysis of Gold Nanoparticles Deposited on Porous Materials 高光谱成像作为一种简便、无损的方法用于分析沉积在多孔材料上的金纳米颗粒的尺寸

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-09-15 DOI: 10.1002/ppsc.202200204

Agnieszka Ciemięga, Katarzyna Maresz, Michał Romaszewski, Przemysław Głomb, Paulina Krupska‐Wolas, Krystian Prusik

引用次数: 1

Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes 非氟化烷基硅烷对球形Y2O3:Eu3+粉体的疏水改性

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-09-13 DOI: 10.1002/ppsc.202300044

Runzi Zhou, Cheng Wen, Haijun Xu, Zenghui Qiu, Xin Zhang

{"title":"Hydrophobic Modification of Spherical Y2O3:Eu3+ Powder Using Nonfluorinated Alkyl Silanes","authors":"Runzi Zhou, Cheng Wen, Haijun Xu, Zenghui Qiu, Xin Zhang","doi":"10.1002/ppsc.202300044","DOIUrl":"https://doi.org/10.1002/ppsc.202300044","url":null,"abstract":"Abstract Europium‐doped yttrium oxide (Y 2 O 3 :Eu 3+ ) is one of the main red‐emitting luminescent materials currently used in light‐emitting devices owing to its high luminous efficiency, high color purity, and other excellent optical characteristics. However, Y 2 O 3 :Eu 3+ is hydrophilic, which is a major obstacle to its long‐term application in high‐humidity outdoor environments. Hydrophobic modification is a viable solution to this problem, and can give Y 2 O 3 :Eu 3+ many excellent properties and functions, such as self‐cleaning ability, anti‐static performance, oil/water separation functions, and corrosion resistance. This study reports the preparation of hydrophobic Y 2 O 3 :Eu 3+ particles modified with nonfluorinated alkyl silanes. Several influencing factors, including the length of the carbon chain in the silane coupling agent, the pH value of the reaction system, the reaction temperature, and the ratio of reactants, on the hydrophobicity of the prepared samples are studied in detail, and the optimal conditions are determined. A superhydrophobic Y 2 O 3 :Eu 3+ material with a water contact angle of 151.6° is finally obtained. Moreover, FTIR, TG, SEM, XPS, XRD, and PL are used to explore the mechanism of the hydrophobic modification and the structural and fluorescence performance changes imparted by this modification.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135742167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co‐sputtering of A Thin Film Broadband Absorber Based on Self‐Organized Plasmonic Cu Nanoparticles 基于自组织等离子体铜纳米粒子的薄膜宽带吸收体的Co -溅射

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-09-12 DOI: 10.1002/ppsc.202300102

Jonas Drewes, Nanda Perdana, Kevin Rogall, Torge Hartig, Marie Elis, Ulrich Schürmann, Felix Pohl, Moheb Abdelaziz, Thomas Strunskus, Lorenz Kienle, Mady Elbahri, Franz Faupel, Carsten Rockstuhl, Alexander Vahl

{"title":"Co‐sputtering of A Thin Film Broadband Absorber Based on Self‐Organized Plasmonic Cu Nanoparticles","authors":"Jonas Drewes, Nanda Perdana, Kevin Rogall, Torge Hartig, Marie Elis, Ulrich Schürmann, Felix Pohl, Moheb Abdelaziz, Thomas Strunskus, Lorenz Kienle, Mady Elbahri, Franz Faupel, Carsten Rockstuhl, Alexander Vahl","doi":"10.1002/ppsc.202300102","DOIUrl":"https://doi.org/10.1002/ppsc.202300102","url":null,"abstract":"Abstract The efficient conversion of solar energy to heat is a prime challenge for solar thermal absorbers, and various material classes and device concepts are discussed. One exciting class of solar thermal absorbers are plasmonic broadband absorbers that rely on light absorption thanks to plasmonic resonances sustained in metallic nanoparticles. This work focuses on Cu/Al 2 O 3 plasmonic absorbers, which consist of a thin film stack of a metallic Cu‐mirror, a dielectric Al 2 O 3 spacer, and an Al 2 O 3 /Cu‐nanoparticle nanocomposite. This work explores two preparation routes for the Al 2 O 3 /Cu‐nanoparticle nanocomposite, which rely on the self‐organization of Cu nanoparticles from sputtered atoms, either in the gas phase (i.e., via gas aggregation source) or on the thin film surface (i.e., via simultaneous co‐sputtering). While in either case, Cu‐Al 2 O 3 ‐Al 2 O 3 /Cu absorbers with a low reflectivity over a broad wavelength regime are obtained, the simultaneous co‐sputtering approach enabled better control over the film roughness and showed excellent agreement with dedicated simulations of the optical properties of the plasmonic absorber using a multi‐scale modeling approach. Upon variation of the thickness and filling factor of the Al 2 O 3 /Cu nanocomposite layer, the optical properties of the plasmonic absorbers are tailored, reaching an integrated reflectance down to 0.17 (from 250 to 1600 nm).","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135878062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Synthesis of Submicrometer‐Sized Active Pharmaceuticals by Laser Fragmentation in a Liquid‐Jet Passage Reactor with Minimum Degradation 在液体射流通道反应器中激光破碎合成亚微米级活性药物的研究

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-09-11 DOI: 10.1002/ppsc.202300034

Tina Friedenauer, Kim Buck, Maike Eberwein, Anna‐Lena Bünte, Christoph Rehbock, Stephan Barcikowski

{"title":"Efficient Synthesis of Submicrometer‐Sized Active Pharmaceuticals by Laser Fragmentation in a Liquid‐Jet Passage Reactor with Minimum Degradation","authors":"Tina Friedenauer, Kim Buck, Maike Eberwein, Anna‐Lena Bünte, Christoph Rehbock, Stephan Barcikowski","doi":"10.1002/ppsc.202300034","DOIUrl":"https://doi.org/10.1002/ppsc.202300034","url":null,"abstract":"Abstract One challenge in the development of new drug formulations is overcoming their low solubility in relevant aqueous media. Reducing the particle size of drug powders to a few hundred nanometers is a well‐known method that leads to an increase in solubility due to an elevated total surface area. However, state‐of‐the‐art comminution techniques like cryo‐milling suffer from degradation and contamination of the drugs, particularly when sub‐micrometer diameters are aspired that require long processing times. In this work, picosecond‐pulsed laser fragmentation in liquids (LFL) of dispersed drug particles in a liquid‐jet passage reactor is used as a wear‐free comminution technique using the hydrophobic oral model drugs naproxen, prednisolone, ketoconazole, and megestrol acetate. Particle size and morphology of the drug particles are characterized using scanning electron microscopy (SEM) and changes in particle size distributions upon irradiation are quantified using an analytical centrifuge. The findings highlight the superior fragmentation efficiency of the liquid‐jet passage reactor setup, with a 100 times higher fraction of submicrometer particles (SMP) of the drugs compared to the batch control, which enhances solubility and goes along with minimal chemical degradation (<1%), determined by attenuated total reflection‐Fourier transform infrared spectroscopy (ATR‐FTIR), high‐performance liquid chromatography (HPLC), and X‐ray diffraction (XRD). Moreover, the underlying predominantly photo‐mechanically induced laser fragmentation mechanisms of organic microparticles (MP) are discussed.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136024148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZnSSe Decorated Reduced Graphene Oxide for Enhanced Photoelectric Properties ZnSSe修饰还原氧化石墨烯增强光电性能

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-09-10 DOI: 10.1002/ppsc.202300101

Yifan Deng, Yun Lei, Zehui Tang, Jiong Chen, Linhui Luo, Yongqin Wang, Can Li, Beibei Du, Shiquan Wang, Zhengguang Sun

引用次数: 0

(Part. Part. Syst. Charact. 9/2023) (Part.Part.Syst.Charact.9/2023)

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-09-01 DOI: 10.1002/ppsc.202370017

引用次数: 0