Nanoscale Advances最新文献_第7页

Stretchable heat-dissipation sheet based on insulating graphene and boron nitride composites: asymmetric elastomeric networks for stable thermal conductivity under repeated tensile strain† 基于绝缘石墨烯和氮化硼复合材料的可拉伸散热片：在重复拉伸应变下稳定导热的不对称弹性网络。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-29 DOI: 10.1039/D5NA00373C

Sang-Mi Jeong, Taekyung Lim, Jonguk Yang, Hee Sung Seo and Sanghyun Ju

{"title":"Stretchable heat-dissipation sheet based on insulating graphene and boron nitride composites: asymmetric elastomeric networks for stable thermal conductivity under repeated tensile strain†","authors":"Sang-Mi Jeong, Taekyung Lim, Jonguk Yang, Hee Sung Seo and Sanghyun Ju","doi":"10.1039/D5NA00373C","DOIUrl":"10.1039/D5NA00373C","url":null,"abstract":"As modern electronic devices become smaller and more highly integrated, stable thermal management is emerging as a key development approach, including in applications considering mechanical deformation. In this study, a flexible heat-dissipating sheet was developed using composites of insulating graphene (I-Gr), plate-like boron nitride (BN-P), and aggregated spherical BN (BN-A) based on a high-elasticity styrene–(ethylene–butylene)–styrene (SEBS) elastomer. The unique asymmetric two-dimensional layered structure of I-Gr and BN improved the heat transfer properties of the composite by maintaining the continuity of the heat-conducting network despite tensile deformation. In addition, the spherical shape and disordered structure of the aggregated BN-A promoted the formation of an extended heat-conducting path and enhanced the bonding between the fillers. At the optimal composition, the composite maintained an initial thermal conductivity (TC) of 2.0 W m−1 K−1 or higher, and the TC reduction (ΔTC) was less than 8% and 10% at 50% and 100% elongation, respectively, demonstrating excellent TC stability. In addition, owing to the interfacial affinity and network reinforcing effect of I-Gr, the TC performance and structural stability were maintained even after 500 cycles of 50% tensile strain and 400% elongation. In contrast, the CNT-based composite showed limitations such as low initial TC, large ΔTC, and low elongation. This study presents a design strategy for a heat-dissipating material with high elasticity, high TC, and excellent durability, offering considerable potential for use in next-generation flexible electronic devices such as wearable electronics, freeform displays, and soft robotics.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 18","pages":" 5536-5545"},"PeriodicalIF":4.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12306545/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144753856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting the protein corona on nanoparticles using random forest models with nanoparticle, protein, and experimental features 利用具有纳米粒子、蛋白质和实验特征的随机森林模型预测纳米粒子上的蛋白质电晕。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-29 DOI: 10.1039/D5NA00425J

Nicole Vijgen, Karsten M. Poulsen, Gustavo Sosa Macias and Christine K. Payne

{"title":"Predicting the protein corona on nanoparticles using random forest models with nanoparticle, protein, and experimental features","authors":"Nicole Vijgen, Karsten M. Poulsen, Gustavo Sosa Macias and Christine K. Payne","doi":"10.1039/D5NA00425J","DOIUrl":"10.1039/D5NA00425J","url":null,"abstract":"Nanoparticles (NPs) present in any biological environment form a “corona” of proteins on the NP surface. This protein corona, rather than the bare NP, determines the biological response to the protein–NP complex. Experiments, especially proteomics, can provide an inventory of proteins in the corona, but researchers currently lack a method to predict which proteins will interact with NPs. The ability to predict the protein corona would aid the design of NPs by decreasing the time and cost of experiments. We describe the development and use of random forest regression and classification models to predict protein abundance and enrichment, respectively, on the surface of NPs using a dataset of NP, protein, and experimental features. These models were trained using data generated in-house through the synthesis and functionalization of NPs with varied core material, surface ligand, diameter, and zeta potential. NPs were incubated with fetal bovine serum, a common protein source for cultured cells, to form a corona, which was characterized by proteomics. Both models identified protein abundance in the serum used to form the corona as the most significant predictor of corona proteins. NP zeta potential and hydrodynamic diameter emerged as the most important NP factors. The random forest regression model was used to test the ability to predict the protein corona of NPs that were excluded from the training data. We highlight the best and worst predictions. These findings offer a machine learning approach to guide experiments.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 18","pages":" 5612-5624"},"PeriodicalIF":4.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12326268/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanomedicine breakthroughs overcoming pancreatic cancer drug resistance through precision nano-interventions. 纳米医学突破通过精密纳米干预克服胰腺癌耐药。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-29 DOI: 10.1039/d5na00513b

Linjia Peng, Yanfeng Liang, Xiaonan Guo, Qiuli Zhang, Zixuan Gao, Xinxin Kong, Haiting Zhang, Binyu Zhu, Daxiang Cui

{"title":"Nanomedicine breakthroughs overcoming pancreatic cancer drug resistance through precision nano-interventions.","authors":"Linjia Peng, Yanfeng Liang, Xiaonan Guo, Qiuli Zhang, Zixuan Gao, Xinxin Kong, Haiting Zhang, Binyu Zhu, Daxiang Cui","doi":"10.1039/d5na00513b","DOIUrl":"https://doi.org/10.1039/d5na00513b","url":null,"abstract":"Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal malignancies, primarily due to its rapid acquisition of drug resistance and the complex tumor microenvironment. Conventional cancer therapies, including chemotherapy and radiotherapy, often fail to elicit durable responses because PDAC cells exhibit both intrinsic and extrinsic resistance, in which the intrinsic resistance is driven by genetic mutations, epigenetic alterations, overexpression of efflux transporters, and the presence of cancer stem cells while the extrinsic resistance is mediated by a dense desmoplastic stroma, hypovascularity, and immunosuppressive cellular components. This review comprehensively analyzes these multifactorial resistance mechanisms and examines cutting-edge nanotechnology-based strategies designed to circumvent them. We discuss the design of intelligent, stimuli-responsive nanocarriers, including pH-sensitive, redox-sensitive, and enzyme-activated systems that enable spatiotemporally controlled drug release, thereby enhancing drug accumulation within tumor cells while minimizing systemic toxicity. Additionally, advances in surface functionalization and active targeting strategies, such as the use of ligand-conjugated nanoparticles, are highlighted for their role in enhancing selective delivery to both the bulk tumor cells and therapy-resistant cancer stem cell populations. Mechanistic insights are provided into how these nanomedicine interventions bypass traditional resistance pathways by facilitating intracellular drug delivery, co-delivering combination therapies, and modulating the tumor microenvironment to enhance therapeutic efficacy. These innovative strategies offer promising avenues to overcome drug resistance in PDAC, potentially transforming therapeutic outcomes for this aggressive disease.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12371568/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144961701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preserving enzyme conformation and catalytic efficiency in crowded and active environments. 在拥挤和活跃的环境中保持酶的构象和催化效率。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-29 DOI: 10.1039/d5na00405e

Arnab Maiti, Nividha, Krishna Kanti Dey

引用次数: 0

Collective motion of methylammonium cations affects phase transitions and self-trapped exciton emission in A-site engineered MAPbI3 films 甲基铵离子的集体运动影响了a位工程MAPbI3薄膜的相变和自捕获激子发射。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-28 DOI: 10.1039/D5NA00599J

Chia-Hsun Yeh, Wen-Yu Cheng, Tai-Che Chou, Yi-Chun Liu, Chia-Wei Chang, Yu-Sheng Chen, Chih-Hsing Wang, Shih-Chang Weng, Ian D. Sharp, Pi-Tai Chou and Chang-Ming Jiang

{"title":"Collective motion of methylammonium cations affects phase transitions and self-trapped exciton emission in A-site engineered MAPbI3 films","authors":"Chia-Hsun Yeh, Wen-Yu Cheng, Tai-Che Chou, Yi-Chun Liu, Chia-Wei Chang, Yu-Sheng Chen, Chih-Hsing Wang, Shih-Chang Weng, Ian D. Sharp, Pi-Tai Chou and Chang-Ming Jiang","doi":"10.1039/D5NA00599J","DOIUrl":"10.1039/D5NA00599J","url":null,"abstract":"Hybrid organic–inorganic halide perovskites are celebrated for their exceptional optoelectronic properties and facile fabrication processes, making them prime candidates for next-generation photovoltaic and optoelectronic devices. By incorporating larger organic cations at the A-site, a novel class of ‘3D hollow perovskites’ has been developed, exhibiting enhanced stability and tunable optoelectronic properties. This study systematically explores the structural, phase transition, and photophysical characteristics of {en}MAPbI3 thin films with varying ethylenediammonium (en2+) content. The incorporation of less polar en2+ expands the perovskite unit cell, prolongs carrier lifetimes, and disrupts MA+ dipole–dipole interactions, thereby lowering the tetragonal-to-orthorhombic phase transition temperature. Temperature-dependent photoluminescence studies reveal that en2+ incorporation reduces the intensity and Stokes shift of self-trapped exciton emission at low temperatures, which are attributed to the diminished collective rotational dynamics of MA+ cations. These findings underscore the critical role of A-site cation dynamics in modulating phase stability and excitonic behaviour within hybrid halide perovskites, deepening our understanding of the interplay between organic cations and the inorganic framework and highlighting the potential of 3D hollow perovskites for stable and tunable optoelectronic applications.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 18","pages":" 5580-5588"},"PeriodicalIF":4.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12315257/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144775831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A compartment-free digital plasmonic coupling assay via single-particle imaging and counting 通过单粒子成像和计数的无区室数字等离子体耦合分析。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-28 DOI: 10.1039/D5NA00403A

Shengwei Zhang, Sina Jamalzadegan, Yan Wang, Natalie Kelmer and Qingshan Wei

{"title":"A compartment-free digital plasmonic coupling assay via single-particle imaging and counting","authors":"Shengwei Zhang, Sina Jamalzadegan, Yan Wang, Natalie Kelmer and Qingshan Wei","doi":"10.1039/D5NA00403A","DOIUrl":"10.1039/D5NA00403A","url":null,"abstract":"Plasmonic coupling-based biosensors have been conventionally quantified by bulk spectroscopic or color measurement methods. Such detection schemes limit assay sensitivity due to the high background noise of bulk measurement. In this work, we developed a digital plasmonic assay platform for sensitive biomarker detection by enumerating individual plasmon-shifted nanoclusters via single-nanoparticle darkfield scattering imaging. The assay is based on a pair of gold (Au) and silver (Ag) nanoparticles (NPs) that are functionalized with high-affinity surface ligands such as antibodies for target recognition. Molecular binding induces the formation of nanoparticle clusters with plasmonic features distinct from those of individual Au or Ag NPs, which can be counted digitally without the need for complex chip or droplet compartments. We systematically investigated nanoparticle–protein interactions during bioconjugation and revealed different effects of absorbed proteins on nanoparticle stability. Under optimized conditions, we achieved a limit of detection (LOD) of 107.5 fM for the detection of biotinylated gold nanoparticles with this assay. FDTD simulation was also performed to investigate different plasmonic coupling effects of various Au–Ag, Ag–Ag, and Au–Au combinations. Finally, a particle counting algorithm was developed to quantify individual nanoparticle clusters from darkfield scattering images with high accuracy. With a rational assay design and simple synthesis procedure, this simple digital assay platform could be engineered for high-sensitivity protein target detection for disease diagnostics.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 18","pages":" 5720-5734"},"PeriodicalIF":4.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12340716/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144847582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystallization of nanopore-confined imidazolium ionic liquids probed by temperature-resolved in situ grazing-incidence wide angle X-ray scattering (GIWAXS). 温度分辨原位掠射广角x射线散射（GIWAXS）探测纳米孔约束咪唑离子液体的结晶。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-28 DOI: 10.1039/d5na00509d

Yuxin He, M Arif Khan, Andrew D Drake, Joshua Garay, Aniruddha Shirodkar, Stephen Goodlett, Joseph Strzalka, Folami Ladipo, Barbara L Knutson, Stephen E Rankin

{"title":"Crystallization of nanopore-confined imidazolium ionic liquids probed by temperature-resolved in situ grazing-incidence wide angle X-ray scattering (GIWAXS).","authors":"Yuxin He, M Arif Khan, Andrew D Drake, Joshua Garay, Aniruddha Shirodkar, Stephen Goodlett, Joseph Strzalka, Folami Ladipo, Barbara L Knutson, Stephen E Rankin","doi":"10.1039/d5na00509d","DOIUrl":"10.1039/d5na00509d","url":null,"abstract":"The crystallization behavior of ionic liquids (ILs) 1-butyl-3-methylimidazolium [BMIM] hexafluorophosphate [PF6] and chloride [Cl] is investigated upon confinement in 2.3 or 8.2 nm diameter silica nanopore arrays, along with the effects of covalently modifying the pore walls with 1-(3-trimethoxysilylpropyl)3-methylimidazolium [TMS-MIM]+ groups. In situ grazing-incidence wide angle X-ray scattering (GIWAXS) is performed during heating from as low as -110 °C to room temperature. Partially ordered \"nanodomains\" are observed in both ILs in the bulk molten state, but they are disrupted by nanoconfinement. Melting point depression consistent with capillary effects is observed for [BMIM][PF6] in 2.3 nm pores. However, the melting point is elevated for [BMIM][PF6] in 8.2 nm pores, which provide sufficient space to stabilize the crystalline phase. For [BMIM][Cl], crystallization is observed only in 8.2 nm bare silica pores, but the melting point is severely depressed. Tethering with IL-like [TMS-MIM+] also promotes the crystallization of [BMIM][PF6], resulting in elevated melting points. The combined effects of a larger pore size and pore surface tethering on [BMIM][PF6] result in a single stable crystal phase that persists from -140 °C to 25 °C (vs. the bulk melting point of -11 °C). These results show that when ILs are used in confined systems, complex crystallization behavior can emerge depending on the counterion, pore size, and surface modification that require consideration of ion layering in the confined space in addition to surface free energy effects.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12415534/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145030273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of induced-strain and interlayer coupling in contact resistance of VS₂-BGaX₂ (X = S, Se) van der Waals heterostructures. 诱导应变和层间耦合对VS2-BGaX2 （X = S, Se）范德华异质结构接触电阻的影响

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-28 DOI: 10.1039/d5na00356c

Umair Khan, Basit Ali, Tahani A Alrebdi, M Bilal, M Shafiq, M Idrees, Bin Amin

{"title":"Role of induced-strain and interlayer coupling in contact resistance of VS2-BGaX2 (X = S, Se) van der Waals heterostructures.","authors":"Umair Khan, Basit Ali, Tahani A Alrebdi, M Bilal, M Shafiq, M Idrees, Bin Amin","doi":"10.1039/d5na00356c","DOIUrl":"10.1039/d5na00356c","url":null,"abstract":"Using Density Functional Theory (DFT) calculations, we explored the electronic band structure and contact type (Schottky and Ohmic) at the interface of VS2-BGaX2 (X = S, Se) metal-semiconductor (MS) van der Waals heterostructures (vdWHs). The thermal and dynamical stabilities of the investigated systems were systematically validated using energy-strain analysis, ab initio molecular dynamics (AIMD) simulations, as well as binding energy and phonon spectrum calculations. After analyzing the band structure, VS2-BGaX2 (X = S, Se) MS vdWHs metallic behavior with type-III band alignment is revealed. A p-type Schottky (Ohmic) contact in VS2-BGaS2 (VS2-BGaSe2) MS vdWHs with decreasing (increasing) tunneling probabilities (current) shows its potential uses in phototransistors, photodetectors and high-speed nanoelectronic devices. Additionally, the work function (ϕ), electrostatic potential and charge density difference are also investigated to gain detailed insights into the work function variations and charge transfer between layers during the fabrication of VS2-BGaX2 (X = S, Se) MS vdWHs. At equilibrium interlayer distance, strong interlayer coupling due to the vdW interactions is further confirmed via Bader charge analysis, showing that the electrons are transferred from BGaS2(VS2) to the VS2(BGaS2) layer in VS2-BGaS2 (VS2-BGaSe2) MS vdWHs. These calculations give a new strategy for experimentalists to design advanced high-speed nanoelectronic devices based on VS2-BGaX2 (X = S, Se) MS vdWHs.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12405776/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145000934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The synergy of metal–organic frameworks and biomaterials for bone tissue engineering: recent advances, challenges, and future recommendations 骨组织工程中金属-有机框架和生物材料的协同作用：最新进展、挑战和未来建议。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-28 DOI: 10.1039/D5NA00279F

Luan Minh Nguyen, Yufeng Wang, Giao Thuy Quynh Vu, Qui Thanh Hoai Ta, Dieu Linh Tran, Ngoc Hoi Nguyen, Thuan Van Tran, Chao Zhang and Dai Hai Nguyen

{"title":"The synergy of metal–organic frameworks and biomaterials for bone tissue engineering: recent advances, challenges, and future recommendations","authors":"Luan Minh Nguyen, Yufeng Wang, Giao Thuy Quynh Vu, Qui Thanh Hoai Ta, Dieu Linh Tran, Ngoc Hoi Nguyen, Thuan Van Tran, Chao Zhang and Dai Hai Nguyen","doi":"10.1039/D5NA00279F","DOIUrl":"10.1039/D5NA00279F","url":null,"abstract":"There has recently been a noticeable increase in the prevalence of bone-related conditions, including osteoarthritis, arthritis, fractures, bone cancer, and infections, thereby creating an urgent demand for advanced biomaterials in regenerative medicine. Among emerging candidates, metal–organic frameworks (MOFs), with their large surface area, tunable porosity, and inherent bioactivity, have demonstrated considerable potential in bone tissue engineering. Initially, research focused on pristine MOFs as bioactive scaffolds or drug delivery vehicles due to their capacity for controlled encapsulation and release of therapeutic agents. However, issues such as poor stability, potential toxicity, and limited mechanical strength have driven the development of MOF-based composites. By incorporating MOFs into hydrogels, electrospun fibers, biocements, and three-dimensional scaffolds, researchers have improved biocompatibility, enhanced structural integrity, and achieved synergistic effects on bone regeneration. Consequently, these composites offer multifunctional platforms that simultaneously provide mechanical support, local drug delivery, and osteoinductive cues. This review highlights recent advances in the field, analyzes key limitations, and emphasizes the need for systematic strategies in design, synthesis, and evaluation. Furthermore, the integration of computational modeling and machine learning is proposed as a promising direction for optimizing material performance and accelerating clinical translation. Ultimately, interdisciplinary collaboration will be essential to realize the full potential of next-generation MOF-based composites in bone repair and regenerative therapies.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 18","pages":" 5479-5500"},"PeriodicalIF":4.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12358947/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144961733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydroxyquinoline-coordinated organometallic complex nanowire and nanosheet for the dielectric layer of capacitors. 电容器介质层用羟基喹啉配位有机金属配合物纳米线和纳米片。

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2025-07-28 DOI: 10.1039/d5na00450k

Karim Khanmohammadi Chenab, Fardad Zarifi, Samaneh Mahmoudi Qashqay, Mohammad-Reza Zamani-Meymian

{"title":"Hydroxyquinoline-coordinated organometallic complex nanowire and nanosheet for the dielectric layer of capacitors.","authors":"Karim Khanmohammadi Chenab, Fardad Zarifi, Samaneh Mahmoudi Qashqay, Mohammad-Reza Zamani-Meymian","doi":"10.1039/d5na00450k","DOIUrl":"https://doi.org/10.1039/d5na00450k","url":null,"abstract":"Understanding the mechanism of electron transfer in organometallic dielectric materials has been a major focus for capacitor applications. The present study reports four 8-hydroxyquinoline-based organometallic complexes and uses them as a dielectric layer for capacitors to analyze their capacitance (C), real and imaginary dielectric constants (ε' and ε''), loss factor (tan δ), dc and ac conductivity (σ dc and σ ac), as well as the influence of morphology on their dielectric and electrical properties. These components were prepared using radio frequency (RF)-sputtering deposition and characterized by FESEM and LCRmetry methods. Molecular analysis of the dielectrics was undertaken using XRD, EDX, DRS, 1H and 13C NMR, Raman, FT-IR and PL spectroscopy techniques. Based on the results, an f-dependent damping of C was observed for AlQ3, ZnQ2 and CdQ2 dielectrics, while ε' remained unchanged, and the ε'' and tan δ of the dielectrics experienced a decrease and an increase vs. f and T, respectively. The value of σ ac indicated an upward trend vs. f, which is linked to polarization of the nanowire and nanosheet dielectric layers. From the molecular aspect, symmetric structures inhibit aggregation of charge carriers and dipole contributions as well as interfacial polarization due to intramolecular charge transfer (ICT), metal-to-ligand charge transfer (MLCT) and ligand-to-metal charge transfer (LMCT) mechanisms. Finally, this research highlights the dielectric properties of organometallic materials to clarify the electron transfer (ET) mechanism for designing materials for dielectric layers.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12366522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144961642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0