Title
|
|
|
|
Modulated formation of MOF-5 nanoparticles : a SANS analysis
| |
Author
|
|
|
|
| |
Abstract
|
|
|
|
MOF-5 nanoparticles were prepared by mixing a solution of [Zn4O(C6H5COO)(6)] with a solution of benzene-1,4-dicarboxylic acid in DMF at ambient conditions. The former species mimics as a secondary building unit (SBU), and the latter acts as linker. Mixing of the two solutions induced the formation of MOF-5 nanoparticles in dilute suspension. The applied conditions were identified as suitable for a closer investigation of the particle formation process by combined light and small angle neutron scattering (SANS). Scattering analysis revealed a significant impact of the molar ratio of the two components in the reaction mixture. Excessive use of the building unit slowed down the process. A similar effect was observed upon addition of 4n-decylbenzoic acid, which is supposed to act as a modulator. The formation mechanism leads to initial intermediates, which turn into cubelike nanoparticles with a diameter of about 60-80 nm. This initial stage is followed by an extended formation period, where nucleation proceeds over hours, leading to an increasing number of nanoparticles with the same final size of 60-80 nm. |
| |
Language
|
|
|
|
English
| |
Source (journal)
|
|
|
|
The journal of physical chemistry: C : nanomaterials and interfaces. - Washington, D.C., 2007, currens
| |
Publication
|
|
|
|
Washington, D.C.
:
2012
| |
ISSN
|
|
|
|
1932-7447
[print]
1932-7455
[online]
| |
DOI
|
|
|
|
10.1021/JP3003728
| |
Volume/pages
|
|
|
|
116
:10
(2012)
, p. 6127-6135
| |
ISI
|
|
|
|
000301509600020
| |
Full text (Publisher's DOI)
|
|
|
|
| |
Full text (publisher's version - intranet only)
|
|
|
|
| |
|