Control of the optical properties of quantum dots by surface coating with calix[n]arene carboxylic acids
Control of the optical properties of quantum dots by surface coating with calix[n]arene carboxylic acids
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DOI：
10.1021/ja062021k
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发表时间：
2006-07-26
影响因子：
15
通讯作者：
Kinjo, Masataka
中科院分区：
文献类型：
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作者：
Jin, Takashi;Fujii, Fumihiko;Kinjo, Masataka
利用杯[n]芳烃羧酸（1 - 3）作为量子点表面包覆剂，开发了一种控制量子点光学性质的新方法。在室温下，在四氢呋喃中，很容易地进行CdSe/ZnS量子点的杯芳烃包覆。对量子点周围的杯芳烃衍生物的羧基进行去质子化，得到了高荧光的水溶性量子点。杯芳烃包覆的量子点的发射峰根据用于表面包覆的杯[n]芳烃衍生物的低聚物尺寸而向较长波长偏移。虽然发射峰的红移随着量子点粒径的增加而减小，但是这种表面涂覆方法对于从单色疏水量子点制备多色水溶性量子点是有用的。
A new method for the control of the optical properties of quantum dots (QDs) has been developed using calix[n]arene carboxylic acids (1−3) as surface coating agents for QDs. The calixarene coating of CdSe/ZnS QDs was easily performed in tetrahydrofuran at room temperature. Deprotonation of the carboxyl groups of the calixarene derivatives surrounding the QDs resulted in highly fluorescent water-soluble QDs. The emission peak of the calixarene-coated QDs shifted to longer wavelengths depending on the oligomer size of the calix[n]arene derivative used for the surface coating. Although the red shift of the emission peak decreases with the increase in the particle size of QDs, this surface coating method is useful for the preparation of multi-colored water-soluble QDs from a single-colored hydrophobic QD.