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

Role of Acids in Producing Ultrabright, Dual‐Emissive Carbon Dots and their Urea/Biuret Composites with Ultralong Afterglow 酸在制备超亮双发射碳点及其超长余辉尿素/双缩脲复合材料中的作用

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-25 DOI: 10.1002/ppsc.202300049

Dong-mei Yan, Zhi‐ying Zhang, Yun Liu, Yan Guan, Dongming Sun

{"title":"Role of Acids in Producing Ultrabright, Dual‐Emissive Carbon Dots and their Urea/Biuret Composites with Ultralong Afterglow","authors":"Dong-mei Yan, Zhi‐ying Zhang, Yun Liu, Yan Guan, Dongming Sun","doi":"10.1002/ppsc.202300049","DOIUrl":"https://doi.org/10.1002/ppsc.202300049","url":null,"abstract":"Since 2015, m‐phenylenediamines (mPD) have become a popular carbon source for the synthesis of carbonized polymer dots (CPDs). However, their exact fluorescence mechanism is still obscure. To elucidate this, inorganic acids that are carbon‐free are chosen as additives for a comparative study. It is found that the green fluorescence quantum yield (nearly 80%), photostability, and reaction yield (over 90%) can be enhanced by introduction of most of inorganic acids with moderate amount. Besides, green‐blue dual emission is observed in acid‐assisted groups. UV‐vis absorption, Fourier‐transform infrared spectroscopy, and surface‐enhanced Raman scattering results indicate that the green fluorescence center is composed of quinoid rings, whereas the blue fluorophore contains benzenoid rings. Moreover, room‐temperature afterglow with lifetime up to 1.25 s is observed exclusively in acid‐assisted CPDs composites with urea/biuret. The blue chromophore is proposed to be the origin of the triplet level that induces the long afterglow. This work provides an in‐depth understanding on the macromolecular structures of CPDs derived from phenylenediamines, and contributes a new line of thought to the origin of phosphorescence in N‐doped carbon dots.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49233819","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

Harmonic Mode-Locked Er-Doped Fiber Laser Based on a Microfiber-Based PbS Nanoparticle Saturable Absorber 基于微纤维基PbS纳米颗粒可饱和吸收体的谐波锁模掺铒光纤激光器

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-25 DOI: 10.1002/ppsc.202300075

Liang Nie, Lu Wang, Xiaoyu Liu, Wenfeng Luo, Chong Wang, Wei Wang, Jiangjiang Feng, Ge Gao, Xiaohui Li, Kai Zhang

{"title":"Harmonic Mode-Locked Er-Doped Fiber Laser Based on a Microfiber-Based PbS Nanoparticle Saturable Absorber","authors":"Liang Nie, Lu Wang, Xiaoyu Liu, Wenfeng Luo, Chong Wang, Wei Wang, Jiangjiang Feng, Ge Gao, Xiaohui Li, Kai Zhang","doi":"10.1002/ppsc.202300075","DOIUrl":"https://doi.org/10.1002/ppsc.202300075","url":null,"abstract":"Lead sulfide (PbS) is a nanomaterial with excellent optical and chemical properties, such as a narrow bandgap (0.37 eV), high thermal damage threshold, and high stability. Obviously, it is appropriate as a saturable absorber (SA) device for ultrafast photonics. However, PbS nanoparticles (NPs) as the SA of ultrashort harmonic mode-locked pulse still haven't been demonstrated at present. In this paper, the PbS NPs are made into an SA-device-based microfiber by optical deposition method and connected in an integrated Erbium-doped fiber laser. And both characteristics and nonlinear optical properties of PbS NPs have been systemically investigated. A fundamental frequency mode-locked pulsed laser is proposed, whose central wavelength is 1560 nm, and the pulse width is 1 ps. In addition, high repetition rate operations are achieved, with a maximum repetition rate of 833 MHz. This is the first time that PbS NPs are used to generate 96th-order harmonic mode-locking, and the corresponding pulse duration is 987 fs. It is demonstrated that PbS NPs are a kind of SA photonic material with excellent performance. It can improve the communication capacity by applying fiber communication, and it has potential application value even in material processing and optical comb.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"10 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541188","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

Ultraviolet‐Light–Triggered Coalescence of Liquid Marbles for Multistep Microreactions 紫外光引发液体弹珠多步微反应的聚结

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-24 DOI: 10.1002/ppsc.202300076

Q. Lv, Jiaqi Li, Ruili Wang, Lijing Zhang

引用次数: 0

Five‐Level Structural Hierarchy: Microfluidically Supported Synthesis of Core–Shell Microparticles Containing Nested Set of Dispersed Metal and Polymer Micro and Nanoparticles 五级结构层次:含有嵌套的分散金属和聚合物微粒子和纳米粒子的核壳微粒子的微流控合成

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-11 DOI: 10.1002/ppsc.202300030

Raminta Mazetyte, K. Kronfeld, J. Köhler

{"title":"Five‐Level Structural Hierarchy: Microfluidically Supported Synthesis of Core–Shell Microparticles Containing Nested Set of Dispersed Metal and Polymer Micro and Nanoparticles","authors":"Raminta Mazetyte, K. Kronfeld, J. Köhler","doi":"10.1002/ppsc.202300030","DOIUrl":"https://doi.org/10.1002/ppsc.202300030","url":null,"abstract":"This study presents the development of a hierarchical design concept for the synthesis of multi‐scale polymer particles with up to five levels of organization. The synthesis of core–shell microparticles containing nested sets of dispersed metal and polymer micro‐ and nanoparticles is achieved through in situ photopolymerization using a double co‐axial capillaries microfluidic device. The flow rates of the carrier, shell, and core phases are optimized to control particle size and result in stable core–shell particles with well‐dispersed three‐level composites in the shell matrix. The robustness and reversibility of these core–shell particles are demonstrated through five cycles of drying and re‐swelling, showing that the size and structure of core–shell particles remain unchanged. Additionally, the permeability and mobility of dye molecules within the shell matrix are tested and showed that different molecular weight dyes have different penetration times. This study highlights the potential of microfluidics as a powerful tool for the controlled and precise synthesis of complex structured materials and demonstrates the versatility and potential of these core–shell particles for sensing applications as particle‐based surface‐enhanced Raman scattering (SERS).","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":"15 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85011375","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

Masthead: (Part. Part. Syst. Charact. 7/2023) 井架头：（零件。零件。系统特性。7/2023）

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-01 DOI: 10.1002/ppsc.202370014

引用次数: 0

(Part. Part. Syst. Charact. 7/2023) (Part.Part.Syst.Charact.7/2023)

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-01 DOI: 10.1002/ppsc.202370013

引用次数: 0

pH‐Responsive Pt@mSiO₂@CaP Core–Shell Nanoplatforms for Synergistic Chemo‐ and Photothermal Therapy pH响应Pt@mSiO2@CaP核壳纳米平台协同化学和光热治疗

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-07-01 DOI: 10.1002/ppsc.202388097

Junlei Wang, Danyang Li, Qing Xu, Haijiao Wang, Chengfeng Liang, Xinyue Zhang, Shi‐Bin Wang, Aizheng Chen, Nina Jiang

引用次数: 0

Masthead: (Part. Part. Syst. Charact. 6/2023) 刊头：（零件。零件。系统特性。6/2023）

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-06-01 DOI: 10.1002/ppsc.202370012

引用次数: 0

(Part. Part. Syst. Charact. 6/2023) (Part.Part.Syst.Charact.6/2023)

4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-06-01 DOI: 10.1002/ppsc.202370011

引用次数: 0

A Curcumin‐Based MOF Embedded Ag NPs and Modified with Polydopamine for Dual‐Drug Delivery and Dual Biological Window Responsive Synergetic Cancer Therapy 基于姜黄素的MOF嵌入Ag NPs并经聚多巴胺修饰，用于双重药物传递和双重生物窗口反应协同癌症治疗

IF 2.7 4区材料科学

Particle & Particle Systems Characterization Pub Date : 2023-05-31 DOI: 10.1002/ppsc.202300047

Xuan Zhang, Zhihuan Zhao, Min Xu, Shasha Yang, Yiliang Xie, Bing Zhang, Jimin Fan

{"title":"A Curcumin‐Based MOF Embedded Ag NPs and Modified with Polydopamine for Dual‐Drug Delivery and Dual Biological Window Responsive Synergetic Cancer Therapy","authors":"Xuan Zhang, Zhihuan Zhao, Min Xu, Shasha Yang, Yiliang Xie, Bing Zhang, Jimin Fan","doi":"10.1002/ppsc.202300047","DOIUrl":"https://doi.org/10.1002/ppsc.202300047","url":null,"abstract":"A dual‐drug delivery, pH‐responsive composite nanoplatform (MAPD NPs) that can respond to two biological windows is developed to improve the efficacy of synergetic chemotherapic/photothermal/chemodynamic therapy (CDT) against tumors. This nanoplatform is surface‐modified polydopamine (PDA) with excellent biocompatibility as the shell and Ag NPs as the catalyst for CDT. The curcumin (Cur) acts as an organic ligand to be encapsulated in metal−biomolecule frameworks (Bio‐MOFs) by self‐assembly, and Bio‐MOF acts as a delivery carrier to deliver of DOX•HCl and then releases the Cur when it degrades in vivo. Moreover, Bio‐MOF can be taken up by cells faster and accelerate cell death compared to free Cur. PDA modification enables MAP (PDA@MOF‐Ag) to have photothermal properties under 808 and 1064 nm light irradiation, which not only improves the biocompatibility of MAP but also makes it produce high heat and abundant ·OH. The photothermal performance of MAP is stable after irradiation at 808 or 1064 nm, and the photothermal conversion efficiency reaches 63.57% and 26.25%. The survival rate of HeLa cells co‐incubation with MAPD NPs after irradiation at 808 and 1064 nm decreases to 19.52 ± 0.69% and 30.48 ± 0.49%, respectively, providing a feasible scheme for the realization of deep tumor killing.","PeriodicalId":19903,"journal":{"name":"Particle & Particle Systems Characterization","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48757741","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