State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing University of Technology, No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China.
Nanotechnology. 2013 Apr 5;24(13):135602. doi: 10.1088/0957-4484/24/13/135602. Epub 2013 Mar 12.
We report herein the controllable generation of encodable multi-fluorescence CdTe@carbon nanoparticles (CdTe@C NPs) via the pyrolysis of quantum dot/photonic crystal (QD/PC) guest-host ensembles. The precursors of CdTe/poly(styrene-co-glycidylmethacrylate) (PS-co-PGMA) QD/PC guest-host ensembles were initially formed via the assembly of epoxy groups of PCs and carboxyl groups on the surface of CdTe QDs, followed by a pyrolysis process to generate CdTe@C NPs. The as-prepared CdTe@C NPs not only integrate the optical properties for both the carbon and CdTe QD constituents, but also enable an impressive enhancement of the fluorescence lifetime for CdTe QDs. The multifarious fluorescent spectra coding for CdTe@C NPs was further generated through regulating the embedded sizes or concentrations of CdTe QDs and the excitation wavelength, and their applications in DNA detection and luminescent patterns were achieved.
我们通过量子点/光子晶体（QD/PC）主客体组装体的热解，报告了可控制备编码多荧光 CdTe@碳纳米粒子（CdTe@C NPs）的方法。CdTe/聚（苯乙烯-co-甲基丙烯酸缩水甘油酯）（PS-co-PGMA）QD/PC 主客体组装体的前体最初是通过 PC 上的环氧基团与 CdTe QD 表面上的羧基之间的组装形成的，然后通过热解过程生成 CdTe@C NPs。所制备的 CdTe@C NPs 不仅集成了碳和 CdTe QD 成分的光学性质，而且还能显著提高 CdTe QD 的荧光寿命。通过调节 CdTe QD 的嵌入尺寸或浓度以及激发波长，进一步产生了编码 CdTe@C NPs 的多荧光光谱，并实现了它们在 DNA 检测和发光图案中的应用。
