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

TitleStabilization of graphene quantum dots (GQDs) by encapsulation inside zeolitic imidazolate framework nanocrystals for photoluminescence tuning
Publication TypeJournal Article
Year of Publication2013
AuthorsBiswal, BP, Shinde, DB, Pillai, VK, Banerjee, R
JournalNanoscale
Volume5
Issue21
Pagination10556-10561
Date PublishedSEP
ISSN2040-3364
Abstract

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.

DOI10.1039/c3nr03511e
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

6.739

Divison category: 
Physical and Materials Chemistry