Quantum confinement-tunable intersystem crossing and the triplet state lifetime of cationic porphyrin-CdTe quantum dot nano-assemblies

被引：25
作者：
Ahmed, Ghada H. [1 ]
Aly, Shawkat M. [1 ]
Usman, Anwar [1 ]
Eita, Mohamed S. [1 ]
Melnikov, Vasily A. [1 ]
Mohammed, Omar F. [1 ]
机构：
[1] King Abdullah Univ Sci & Technol, Solar & Photovolta Engn Res Ctr, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia
来源：
CHEMICAL COMMUNICATIONS | 2015年 / 51卷 / 38期
关键词：
FREE-BASE PORPHYRIN; EXCITED-STATES; CHARGE-TRANSFER; SOLAR-CELLS; THIN-FILMS; METALLOPORPHYRINS; LUMINESCENCE; GENERATION; MOLECULES; MECHANISM;
D O I：
10.1039/c5cc01542a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Here, we report a ground-state interaction between the positively charged cationic porphyrin and the negatively charged carboxylate groups of the thiol ligands on the surface of CdTe quantum dots (QDs), leading to the formation of a stable nanoassembly between the two components. Our time-resolved data clearly demonstrate that we can dramatically tune the intersystem crossing (ISC) and the triplet state lifetime of porphyrin by changing the size of the QDs in the nanoassembly.
引用
收藏
页码：8010 / 8013
页数：4
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