Nano Select最新文献_第2页

Structure design for light‐extraction enhancement of UVC‐LED 紫外线 LED 光提取增强器的结构设计

Nano Select Pub Date : 2024-07-12 DOI: 10.1002/nano.202300179

Qixin Liu, An‐Chi Wei

引用次数: 0

Special Issue on Advances in Porous Materials 多孔材料进展》特刊

Nano Select Pub Date : 2024-07-12 DOI: 10.1002/nano.202400088

Hélder A. Santos

引用次数: 0

Microwave‐Assisted Tragacanth Gum–Based Grafted Silver Nanocomposite Hydrogel for Sustained Release Formulations of Diclofenac Sodium and Antibacterial Assay 微波辅助黄胶接枝银纳米复合水凝胶用于双氯芬酸钠缓释制剂和抗菌检测

Nano Select Pub Date : 2024-07-09 DOI: 10.1002/nano.202300200

Sharnappa Chapi, G. Babaladimath, M. V. Murugendrappa, A. Raghu

{"title":"Microwave‐Assisted Tragacanth Gum–Based Grafted Silver Nanocomposite Hydrogel for Sustained Release Formulations of Diclofenac Sodium and Antibacterial Assay","authors":"Sharnappa Chapi, G. Babaladimath, M. V. Murugendrappa, A. Raghu","doi":"10.1002/nano.202300200","DOIUrl":"https://doi.org/10.1002/nano.202300200","url":null,"abstract":"In this work, novel tragacanth gum‐graft‐poly(2‐acrylamido‐2‐methylpropanesulfonic acid) (TG‐g‐PAMPS) hydrogel was synthesized via free radical copolymerization of TG, 2‐acrylamido‐2‐methylpropanesulfonic acid by using ammonium peroxodisulfate and N,N‐methylene‐bis‐acrylamide under microwave radiation, resulting in the cross‐linked graft copolymer network. Silver nanoparticles (SNs) were formed and stabilized by the reduction of silver nitrate using tri‐sodium citrate. The TG‐g‐PAMPS gel and its nanocomposite were characterized and confirmed using FTIR, TGA, XRD, SEM, EDS, and TEM techniques. It is observed that the presence of SNs significantly improves the swelling ability of the TG‐g‐PAMPS gel. Degradation studies of both hydrogels were studied using the soil burial method and determining the respective weight loss. The presence of SNs is found to impart significant antibacterial properties to the gel against Pseudomonas aeruginosa and Escherichia coli bacteria. Further, the TG‐g‐PAMPS gel and TG‐g‐PAMPS‐SN were evaluated as matrix materials for the release of the drug (diclofenac sodium) and the effect of SNs on the release was examined. The in‐vitro released data were analyzed using empirical equations to understand the mechanism of release. Among the various models, the released data were well fitted into the Korsmeyer–Peppas equation and the released kinetics followed non‐Fickian diffusion.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"55 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141663240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of Biodiesel from Crude Pittosporum resiniferum Oil Using Heterogeneous Solid Base Catalyst 利用异构固体基催化剂从粗海桐油中生产生物柴油

Nano Select Pub Date : 2024-07-02 DOI: 10.1002/nano.202300132

Rogers Kipkoech, Mohammed Takase

引用次数: 0

Interplay of superconductivity and magnetism in the Fe1+yTe1‐xSex iron‐based superconductor: A theoretical study 铁基超导体 Fe1+yTe1-xSex 中超导性与磁性的相互作用：理论研究

Nano Select Pub Date : 2024-06-14 DOI: 10.1002/nano.202400038

Kefale Ayalew, Dagne Atnafu Shiferaw, Gedefaw Mebratie

{"title":"Interplay of superconductivity and magnetism in the Fe1+yTe1‐xSex iron‐based superconductor: A theoretical study","authors":"Kefale Ayalew, Dagne Atnafu Shiferaw, Gedefaw Mebratie","doi":"10.1002/nano.202400038","DOIUrl":"https://doi.org/10.1002/nano.202400038","url":null,"abstract":"The competition between superconductivity and magnetism has been studied for the ongoing investigation of mechanisms in unconventional superconductors. Fe1+yTe1−xSex is distinct among iron‐based superconductors due to its structural simplicity, comprising solely FeTe/Se layers that are favorable for probing the superconductivity mechanism. The main goal of this article is to focus on the computational investigation of the interplay of magnetism and superconductivity in the Fe1+yTe1−xSex multiband superconductor. From the electronic structure of the Fe1+yTe1−xSex superconductor, a two‐band Hamiltonian model was considered to examine the interplay of magnetism and superconductivity in the Fe1+yTe1‐xSex superconductor. Using Green's function formalism with the Hamiltonian model, the mathematical statements for the superconducting (Sc) gap parameter, spin density wave (SDW) ordering parameter, Sc and magnetic transitional temperatures have been obtained. Using these mathematical expressions, the phase diagram of transition temperatures versus the gap parameters for the Fe1+yTe1‐xSex superconductor has been plotted. The intersection region in the phase diagram of transition temperatures as a function of the SDW order parameter has been plotted to show the possible interplay of superconductivity and magnetism in a Fe1+yTe1‐xSex iron‐based superconductor.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"52 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141339639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and investigation of celastrol‐peptide nanoassemblies and their binding interactions with superoxide dismutase 1 and its mutants 设计和研究西司替醇-肽纳米组合及其与超氧化物歧化酶 1 及其突变体的结合相互作用

Nano Select Pub Date : 2024-06-11 DOI: 10.1002/nano.202400042

Beatriz G. Goncalves, Chau Anh N. Phan, Mary A. Biggs, Hannah L. Hunt, I. Banerjee

{"title":"Design and investigation of celastrol‐peptide nanoassemblies and their binding interactions with superoxide dismutase 1 and its mutants","authors":"Beatriz G. Goncalves, Chau Anh N. Phan, Mary A. Biggs, Hannah L. Hunt, I. Banerjee","doi":"10.1002/nano.202400042","DOIUrl":"https://doi.org/10.1002/nano.202400042","url":null,"abstract":"The misfolding and aggregation of superoxide dismutase 1 (SOD1) and its mutants has been implicated in amyotrophic lateral sclerosis (ALS). In this study, we have created three peptide conjugates with the antioxidant pentacyclic terpene celastrol and examined their interactions with SOD1 and its mutants A4V and G93A. The peptides YYIVS, MPDAHL, and GSGGL are derived from natural sources and are known for their inherent antioxidant properties. Docking studies revealed that most conjugates showed strong binding with the metal binding and electrostatic loops as well as the β1, β5, and β6 hydrophobic core of SOD1. The conjugates were synthesized and self‐assembled into nanoassemblies. Surface plasmon resonance studies further confirmed the binding interactions of the nanoassemblies with the SOD1 proteins. The nanoassemblies were found to internalize into HEK293T cells. The HEK 293T cells were then transfected with GFP fused WT (Wild Type), A4V and G93A SOD1 mutants. Flow cytometry revealed that treatment with celastrol‐peptide nanoassemblies, affected the fluorescence of the SOD1 protein, implying their role in modulating SOD1, particularly for the mutants. N–Acetyl–Leu–Leu–Norleucinal (ALLN) induced SOD1 aggregation was also affected upon treatment with the nanoassemblies. These results suggest that the nanoassemblies may potentially modulate the activity and structure of SOD1.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"54 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rhabdomyosarcoma targeting with tuned porous silicon nanoparticles 利用调谐多孔硅纳米粒子靶向横纹肌肉瘤

Nano Select Pub Date : 2024-06-08 DOI: 10.1002/nano.202400004

Sofia Dominguez‐Gil, Rita Sala, V. J. Morel, Christophe Nguyen, K. Cheikh, A. Morère, Jean‐Olivier Durand, Jochen Rössler, Michele Bernasconi, Frédérique Cunin, M. Gary‐Bobo

引用次数: 0

Numerical simulation of a highly efficient perovskite solar cell based on FeSi2 photoactive layer 基于 FeSi2 光活性层的高效过氧化物太阳能电池的数值模拟

Nano Select Pub Date : 2024-05-05 DOI: 10.1002/nano.202400020

George G. Njema, J. Kibet, Nicholas Rono, Edson L. Meyer

{"title":"Numerical simulation of a highly efficient perovskite solar cell based on FeSi2 photoactive layer","authors":"George G. Njema, J. Kibet, Nicholas Rono, Edson L. Meyer","doi":"10.1002/nano.202400020","DOIUrl":"https://doi.org/10.1002/nano.202400020","url":null,"abstract":"The primary aim of this work is to investigate the use iron di‐silicide (FeSi2) as a photoactive layer in order to achieve superior performance in the solar cell architecture—ITO/TiO2/FeSi2/CuSCN/Ni. The optimum thickness of the absorber layer was found to be 1000 nm, which gave optimal properties of the proposed cell—a short‐circuit current density (Jsc) of 51.41 mAm−2, an open‐circuit voltage (Voc) of 0.93 V, a fill factor (FF) of 77.99%, and power conversion efficiency (PCE) of 37.17%. The introduction of an ultrathin interfacial layer between the electron transport layer (ETL), the perovskite interface, and the hole transport layer (HTL) enhanced the electrical output of the proposed solar cell. The Jsc increased to 51.86 mAcm−2, Voc rose to 0.97 V, while FF and PCE increased to 82.86% and 41.84%, respectively. Accordingly, the proposed cell architecture is promising and can be introduced into the manufacturing workflow for commercial applications. Moreover, because of its exceptional photon absorption capabilities, FeSi2 is a potentially excellent photoactive material for solar cell fabrication. The detailed findings of this study have therefore indicated that high‐performance FeSi2‐based solar can be achieved in future.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"271 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141012650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of vacancy defects and nanopumping on drug transport efficiency in boron nitride nanotubes 氮化硼纳米管中的空位缺陷和纳米泵浦对药物传输效率的作用

Nano Select Pub Date : 2024-05-02 DOI: 10.1002/nano.202300175

H. Jami, Roozbeh Sabetvand, Gurvinder Singh

{"title":"Role of vacancy defects and nanopumping on drug transport efficiency in boron nitride nanotubes","authors":"H. Jami, Roozbeh Sabetvand, Gurvinder Singh","doi":"10.1002/nano.202300175","DOIUrl":"https://doi.org/10.1002/nano.202300175","url":null,"abstract":"Boron nitride nanotubes (BNNTs) are promising nanomaterials for drug delivery due to their remarkable mechanical and electrical properties. BNNTs use nanopumping technique to transport drug molecules to target sites when subjected to an external force, such as an electric field or mechanical forces. Despite numerous efforts to investigate BNNTs/biomolecules interactions, the impact of atomic‐scale intrinsic characteristics of BNNT on drug delivery efficiency and delivery time is not well understood. To investigate this, we use molecular dynamics simulations (MD) to develop two simulation models: one with defective BNNT and another with a non‐defective (pristine) BNNT. Here, the fullerene molecule (C20) is introduced into BNNT and transported towards target cells. Our results show that vacancy defects can significantly impact the effectiveness of the nanopumping process. In pristine BNNTs, drug molecules move primarily by translation motion. However, the presence of vacancy defects and their concentration in BNNTs can affect the translation motion of drug molecules. We show that the judicious selection of oscillation frequency and amplitude of Cu tips is important to achieve efficient drug transport. This work provides new insights into the role of structural defects and oscillation on the drug transport efficiency of C20 molecules in BNNT using the nanopumping mechanism.","PeriodicalId":510500,"journal":{"name":"Nano Select","volume":"34 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141018469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aqueous CuS nanocrystals via a flow synthesis approach 通过流动合成法获得水性 CuS 纳米晶体

Nano Select Pub Date : 2024-05-01 DOI: 10.1002/nano.202400025

Helena Decker, Andre Wolf, Moritz Kemmler, Vladimir Lesnyak

引用次数: 0