英语翻译请帮忙翻译这段文字,precursors in a high-temperature coordinating solution made of TOP/ Tapa mixed with additional amine terminated ligands,followed by overcoating the native core with a thick layer of ZnS (consisting of 5-7 monol

英语翻译请帮忙翻译这段文字,precursors in a high-temperature coordinating solution made of TOP/ Tapa mixed with additional amine terminated ligands,followed by overcoating the native core with a thick layer of ZnS (consisting of 5-7 monol
英语翻译
请帮忙翻译这段文字,precursors in a high-temperature coordinating solution made of TOP/ Tapa mixed with additional amine terminated ligands,followed by overcoating the native core with a thick layer of ZnS (consisting of 5-7 monolayers),also carried out in a high-temperature coordinating mixture; ZnS overcoating is usually carried out at temperatures lower than those used during CdSe nanocrystal growth to avoid compromising the integrity of the native cores.Robust nanocrystals with narrow size distribution,symmetric photoemission spectra (fwhm of 30-40 nm),and high photoluminescence quantum yields (QY) are prepared using this synthetic approach.Three QD samples having PI.emission maxima at 510,530,and 555 nm were synthesized and used in this study.The resulting CdSe-ZnS core-shell QDs were rendered water soluble by replacing the native TOP/Tapa organic capping shell with bidentate dihydrolipoic acid (DHLA,a dithiol-alkyl-COOH) ligands,as described previously." This provided aggregate-free water-soluble QD prepara?tions with good quantum yields and which were exceptionally stable in basic pH buffer.DHLA-capped CdSe-ZnS QD samples 1O-40 ,uM) stable over a period of 1 year have been routinely prepared in our laboratory.The DHLA-capped nanocrystals have a homogeneous density of charge due to deprotonation of the carboxylic acid end groups.The relatively long term stability is presumably due to the strong bidentate interactions of the DHLA ligands with the ZnS surface via their dithiol polar heads in comparison,for example,with monothiol terminated caps."
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英语翻译请帮忙翻译这段文字,precursors in a high-temperature coordinating solution made of TOP/ Tapa mixed with additional amine terminated ligands,followed by overcoating the native core with a thick layer of ZnS (consisting of 5-7 monol
在一种高温协调的解答的前体由顶面塔帕纤维布制成与另外的胺物被终止的配合基混合了,跟随由多涂当地核心与在一个高温协调的混合物(包括~5-7单层),也执行的ZnS厚实的层数; 多涂的ZnS比在CdSe nanocrystal成长期间被用于的那些通常被执行在温度更低避免减弱当地核心的正直. 与狭窄的大小分布、相称光射光谱(fwhm 30-40毫微米)和高photoluminescence量子产额(QY)的健壮nanocrystals使用这种综合性方法,准备. 有三个QD的样品PI. 在510,530的放射最大值和555毫微米被综合了并且用于这项研究. 发生的CdSe-ZnS核心壳QDs通过替换当地TOP/Tapa有机加盖的壳使溶于水用有二齿dihydrolipoic酸(DHLA, dithiol烷基COOH)配合基,如所描述以前.“这提供了无聚集体溶于水QD prepara ?与,并且格外是稳定的在基本的酸碱度缓冲的好量子产额的tions. 在1年中的DHLA加盖的CdSe-ZnS QD样品(~1O-40, um)槽枥在我们的实验室定期地准备了. DHLA加盖的nanocrystals有同类的密度充电由于羧酸末端小组的deprotonation. 相对地长期稳定性比较起来据推测归结于DHLA配合基的强的有二齿互作用与ZnS表面的通过他们的dithiol极性头,例如,与monothiol被终止的盖帽”.