Stabilization of graphene quantum dots (GQDs) by encapsulation inside zeolitic imidazolate framework nanocrystals for photoluminescence tuning

被引：131
|
作者：
Biswal, Bishnu P. [1 ]
Shinde, Dhanraj B. [1 ]
Pillai, Vijayamohanan K. [1 ,2 ]
Banerjee, Rahul [1 ]
机构：
[1] CSIR Natl Chem Lab, Phys Mat Chem Div, Pune 411008, Maharashtra, India
[2] CSIR Cent Electrochem Res Inst, Karaikkudi 630006, Tamil Nadu, India
来源：
NANOSCALE | 2013年 / 5卷 / 21期
关键词：
METAL-ORGANIC FRAMEWORKS; FUNCTIONAL-GROUPS; ENERGY-TRANSFER; SEPARATION; LIGHT; LUMINESCENCE; EFFICIENT; COMPOSITE; DEVICES; CAPTURE;
D O I：
10.1039/c3nr03511e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Luminescent graphene quantum dots (GQDs) are encapsulated and stabilized in Zeolitic Imidazolate Framework (ZIF-8) nanocrystals. The GQDs are well confined due to the adsorption on the growing face of the ZIF-8 nanocrystals and have a profound effect on the shape of the nanocrystals from rhombic dodecahedron to spherical. Stabilizing GQDs inside the ZIF-8 nanocrystals results in tailoring of the photoluminescence emission (ca. 32 nm, bathochromic shift) of the GQD@ZIF-8 nanocrystal composite even after 3 months of aging under normal laboratory conditions. Also the water adsorption (at STP) capacity increased for the GQD@ ZIF-8 composite as compared to the pristine ZIF-8.
引用
收藏
页码：10556 / 10561
页数：6
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