简介:在苏打石灰玻璃里嵌入的银nanoclusters(NC)被电的fieldassisted散开(EFAD)并且连续退火综合。样品被紫外力的吸收光谱学,光致发光光谱学,X光检查光电子光谱学(XPS),和一生大小描绘。银的生长聚类的试验性的结果表演被退火的温度和居住时间赞成。同样传播、退火的玻璃样品在紫外刺激下面在550nm附近显示出光致发光,它能与L中心和Ag3的存在被联系+簇。并且增加在SPR的外观的结果达到顶点的退火的温度和居住时间并且光紧张减少因为Ag3+簇长大进Agnanoparticles。
简介:AbstractObjective:Glioma is the most common and aggressive primary brain tumor. Here, we aimed to establish a nano-drug carrier system to traverse the blood-brain barrier for the treatment and inhibition of glioma migration.Methods:The synthesis of bovine serum albumin protected-silver nanoclusters (BSA-AgNCs) was performed using chemical reduction. The drug paclitaxel (PTX) can be loaded into BSA-AgNCs through electrostatic and hydrophobic interactions to formulate spherical BSA-AgNC-PTX nanoparticles (BSA-AgNC-PTX NPs). A glioma mouse model was established by injecting U251-GFP-Luc cells into the mouse striatum, and all surgical procedures were approved by the Animal Ethics Committee of Nanchang University (SYXK2019-0003) on December 29, 2019.Results:The BSA-AgNC-PTX NPs were able to efficiently pass through the blood-brain barrier, both in vitro and in vivo, to deliver the drug to the tumor site. The in vivo assessment of BSA-AgNC-PTX NPs in glioblastoma multiforme-bearing mice revealed the significant inhibition of tumor growth and migration, prolonging the survival of the mice.Conclusion:These results indicated that BSA-AgNCs might represent an ideal nanocarrier for the treatment of glioma and has the potential to be used in the treatment of a variety of central nervous system diseases.
简介:<正>Silvercarsaremuchlesslikelytobeinvolvedinaseriouscrashthancarsofothercolours,suggestsanewstudyofover1,000cars.Peopledrivinginsilvercarswere50percentlesslikelytosufferseriousinjuryinacrashcomparedwithdriversofwhitecars,theresearchinNewZealandfound.
简介:在用黄金和银做的塑造的nanoparticles的合成的进展在这篇文章被考察。这评论由分析在nanoparticle形状和它的内部水晶的结构的几何对称之间的关系以一个新角度开始。根据关系,有明确的形状的nanoparticles被分类进三个范畴:有单个crystallinity,有尖双胞胎的nanoparticles,和有平行双胞胎的nanoparticles的nanoparticles。为在每个范畴的塑造的nanoparticles的合成的古典方法的讨论和分析也被包括,在塑造的金属nanoparticles的合成的未来研究方向上的个人观点简短被总结。这评论被期望在为塑造的nanoparticles的合成设计策略并且分析相应生长机制提供一个指南。
简介:TheopticalabsorbanceinnearUVwavelengthregioninSnO2nanoclustersinanexternalelectricfieldisdeterminedatroomtemperature.Theabsorbancespectraasapplicedfieldandtheabsorbancevariationswiththeappliedfieldareobtained.Therelationbetweenabsorbancechangeandappliedfieldisnon-linear.andissaturatedathighfieldregion.
简介:3-Mercaptopropionicacidmonolayerprotectedgoldnanoclusters(MPA-MPCs)weresynthesizedandcharacterizedbytransmissionelectornmicroscopy,UV-Visspectroscopy,X-rayphotoelectronspectroscopyandFourlertransforminfraredspectroscopy.Theexactvalueofquantizeddouble-layercapacitanceofMPCsinaqueousmediawasobtainedbydifferentialpulsevoltammograms.
简介:银电影(Ag)和有厚度~的silvergold电影(AgAu)15nm在通过热蒸发的Bk7眼镜上是涂的。在做5.2%的黄金以后,Ag电影的谷物尺寸从13.6把nm归结为9.1nm,也,表面粗糙从1.45nm减少到0.94nm。一盏紫外灯被用作照耀光来源在空气加速腐蚀过程。当AgAu电影更不降级时,在17h以后,照耀,纯银电影表面拐弯黑暗,和发射度从350把nm归结为500nm,几乎微不足道的在紫外放射以后。另外的X光光电子光谱学和原子力量显微图数据被提供显示出电影和他们的表面形态学的原子内容。小谷物尺寸和合金电影的高收拾行李密度在空气与氧阻止银的反应,这被建议,它导致AgAu电影的高稳定性。
简介:Severalaspectsoftheapplicationofsilverelectrodetotheelectrochemicalstudiesofhemoglobinhavebeendiscussedinthispaper.Thesilverelectrodecouldnotonlybeuseddirectlyastheelectrodefortheelectrochemicalstudiesofhemoglobin,butalsoreactwithphenothiazineandbenzimidazoletogivestableandusefulmediator-coatedelectrodes.Inaddition,thesilverelectrodecouldhelpsodiumdodecylsulfatetogivefullplaytoitspromotingeffectontheprotein.
简介:在这研究,当簇被用来设计由中央的和六外部heptamers组成的super-heptamer,金nanodisk在heptamer聚类取向。我们由勾略检验了电浆子和Fano回声的位置和运动光谱为各种各样的nanodisk尺寸的上层建筑的反应。在superradiant和nanodisk簇的subradiant电浆子回声模式之间的干扰的质量被发现强烈取决于结构的配置和环境媒介的折射索引。我们用nanodisk代替了中央heptamer并且由几何上改变nanodisk结构探查了Fano回声的位置。最后,学习结构的两个的电浆子反应上的绝缘的环境的效果数字地并且理论上被检验。到液体物质的存在的有限plasmonic结构的局部性的表面电浆子回声敏感被阴谋优点的线性数字调查并且出现。有限差别的时间域方法被用作一个数字工具调查结构的电浆子反应。
简介:这研究的目的是用作为矩阵树脂作为传导性的fillers和修改环氧基树脂的organosilicone树脂经由solvothermal方法准备的银nanowires开发传导性的粘合剂。电的传导性的粘合剂和机械性质上的银nanowires/flakes的增加的效果被调查。与有银薄片fillers的常规传导性的粘合剂相比,有银nanowiresfillers的传导性的粘合剂的过滤阀值是10?%近似降低。然而,银nanowires的内容的进一步的上升没在传导性的粘合剂的电的传导性的改进上有明显的影响。传导性的粘合剂的传导性、机械的性质能由增加银nanowires是兼容的,哪个传统的银传导性的粘合剂reach.Graphical不能提炼银nanowires,舒适形态学经由alcohothermal准备了方法被介绍进传导性的粘合剂作文。它能被发现尽管存在,发现银nanowires在传导性的粘合剂相当被重叠crosslinking到某程度,然而,银nanowires不出现凝块的现象。有传导性的fillers能展出有利电、机械的性质的银nanowires的传导性的粘合剂。
简介:Themetalcomplexesofpolyazacryptandhaveattractedmuchattentionowingtotheirspecialstructure,unusualphoto-chemical,electricalandcatalyticproperties.Recently,LehnandNelsonsynthesizedsuccessivelyaseriesofcryptandsandcrypatateswithhighyieldby(2+3)schiff-basecondensationoftris(2-aminoethyl)amineandaryldialdehyde.Butsofar,littleworkabouttheanalogueswithlargercavitiesandflexiblechainscondensedbytris(3-aminopropyl)amine(abbr.