硫系化合物
等温滴定量热法
纳米晶
配体(生物化学)
钙钛矿(结构)
化学
卤化物
物理化学
量子点
等温过程
材料科学
纳米技术
结晶学
无机化学
热力学
有机化学
物理
生物化学
受体
出处
期刊:Meeting abstracts
日期:2022-10-09
卷期号:MA2022-02 (20): 905-905
标识
DOI:10.1149/ma2022-0220905mtgabs
摘要
I will describe our group’s efforts to quantify ligand association and exchange reactions on semiconductor nanocrystal (NC) surfaces via isothermal titration calorimetry (ITC). ITC provides a direct thermal measurement of reaction progress. As shown in earlier work by our group and others examining ligand exchange on chalcogenide and pnictide quantum dots, ITC is able to access the enthalpy change of reaction, equivalency, and effective equilibrium constants, including in cases that are challenging to resolve by NMR alone. Here, we will describe the extension of this approach to ligand exchange reactions on halide perovskite NCs, and to ligand exchange on chalcogenide NCs in aqueous solution. Such advances are needed to contribute a quantitative description of NC surface chemistry toward applications such as advanced optoelectronic devices, bioimaging probes, and photocatalysis.
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