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Chong, Samantha Y., Jones, James T. A., Khimyak, Yaroslav Z. 
ORCID: https://orcid.org/0000-0003-0424-4128, Cooper, Andrew I., Thomas, Arne, Antonietti, Markus and Bojdys, Michael J.
(2013)
Tuning of gallery heights in a crystalline 2D carbon nitride network.
Journal of Materials Chemistry A, 1 (4).
pp. 1102-1107.
ISSN 2050-7488
Abstract
Poly(triazine imide) - a 2D layered network - can be obtained as an intercalation compound with halides from the ionothermal condensation of dicyandiamide in a eutectic salt melt. The gallery height of the intercalated material can be tuned via the composition of the eutectic melt and by post-synthetic modification. Here, we report the synthesis of poly(triazine imide) with intercalated bromide ions (PTI/Br) from a lithium bromide and potassium bromide salt melt. PTI/Br has a hexagonal unit-cell (P63cm (no. 185); a = 8.500390(68) Å, c = 7.04483(17) Å) that contains two layers of imide-bridged triazine (C3N3) units stacked in an AB-fashion as corroborated by solid-state NMR, FTIR spectroscopy and high-resolution TEM. By comparison with a recently reported material PTI/Li +Cl-, prepared from a LiCl/KCl eutectic, the layer-stacking distance in the analogous bromide material was expanded from 3.38 Å to 3.52 Å-an exceptionally large spacing for an aromatic, discotic system (cf. graphite 3.35 Å). Subsequent treatment of PTI/Br with concentrated ammonium fluoride yields poly(triazine imide) with intercalated fluoride ions (PTI/F) (P63/m (no. 176); a = 8.4212(4) Å, c = 6.6381(5) Å) as a statistical phase mix with PTI/Br. Fluoride intercalation leads to a contraction of the gallery height to 3.32 Å, demonstrating that the gallery height is synthetically tuneable in these materials.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | chemistry(all),renewable energy, sustainability and the environment,materials science(all),sdg 7 - affordable and clean energy ,/dk/atira/pure/subjectarea/asjc/1600 |
| Faculty \ School: | Faculty of Science > School of Pharmacy (former - to 2024) |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 09 Jul 2021 07:28 |
| Last Modified: | 25 Sep 2024 15:40 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/80479 |
| DOI: | 10.1039/c2ta01068b |
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