Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 42, 2016
Previous Article Next Article

Gold nanoparticles supported by imidazolium-based porous organic polymers for nitroarene reduction

Author affiliations

Abstract

Two imidazolium-based porous organic polymers (Im-POP-1 and Im-POP-2) were synthesized through the Yamamoto reaction of different molar ratios of 1,3-bis(4-bromophenyl)imidazolium bromide and tetrakis(4-bromophenyl)methane, subsequent anion exchange with HAuCl4 and reduction with NaBH4 produced well-dispersed gold nanoparticles (NPs), Au@Im-POP-1 and Au@Im-POP-2. These NPs possess a small size and narrow size distribution, their application in the reduction of nitroarenes was evaluated, and the reduction process was tracked by 13C NMR experiments for reaction mechanism studies. In comparison with gold NPs supported by a non-ionic analogue from the Yamamoto reaction of tetrakis(4-bromophenyl)methane (Au@POP-TPM), Au@Im-POP-2 exhibits high catalytic activity, good selectivity of aniline and superior recyclability in nitrobenzene reduction. The gold NPs in Au@Im-POP-2 increase slightly after four consecutive reaction runs, while an apparent agglomeration of NPs in Au@POP-TPM was observed after the second run. This research provides a new type of support for the stabilization of gold NPs and for the improvement of catalytic performances.

Graphical abstract: Gold nanoparticles supported by imidazolium-based porous organic polymers for nitroarene reduction

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 01 Aug 2016, accepted on 13 Sep 2016 and first published on 14 Sep 2016


Article type: Paper
DOI: 10.1039/C6DT03050E
Citation: Dalton Trans., 2016,45, 16896-16903
  •   Request permissions

    Gold nanoparticles supported by imidazolium-based porous organic polymers for nitroarene reduction

    Y. Su, X. Li, Y. Wang, H. Zhong and R. Wang, Dalton Trans., 2016, 45, 16896
    DOI: 10.1039/C6DT03050E

Search articles by author