Author(s):
1. Olivera Klisurić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Departman za fiziku, Serbia
2. Ivana Marjanović, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Departman za fiziku, Serbia
3. Predrag Ristić, Hemijski fakultet, Univerzitet u Beogradu, Serbia
4. Tamara Todorović, Hemijski fakultet, Univerzitet u Beogradu, Serbia
5. Predrag Vulić, Rudarsko-geološki fakultet u Beogradu, Serbia
6. Nenad Filipović, Univerzitet u Beogradu, Poljoprivredni fakultet, Serbia

Abstract:
Four silver-based coordination polymers (CPs), {[Ag-(L)2](BF4)}∞ (1), {[Ag(H2BTC)(L)]•(H3BTC)}∞ (2), {[Ag2(H2BTEC)(L)2]•3.33H2O}∞ (3), and [Ag(H25SSA)(L)]∞ (4), were synthesized using thiomorpholine-4 carbonitrile (L) as the primary ligand and three aromatic polyoxoacids as coligands: trimesic (H3BTC), pyromellitic (H4BTEC), and 5-sulfosalicylic acid (H35SSA). L was chosen as a ligand since it belongs to the class of bismonodentate ligands which are able to form Ag-CPs. On the other hand, selected coligands showed photoluminescent properties. Beside the IR, NMR, TGA-DSC analysis, all compounds were crystallograficaly and topologicaly investigated. The XRPD investigation indicates that the samples 1–4 correspond to the single-phase X-ray powder patterns in accordance with the structural model obtained by SCXRD. All compounds show reasonable photocatalytic activity for photocatalytic degradation of mordant blue 9 dye, with reaction rates in the 0.036−0.056 min−1 range. Changes in the reaction rates can be correlated with the type and coordination modes of the coligands. Complex 3 exhibits photoluminescence at 77 K, while 4 exhibits photoluminescence at both room temperature and 77 K.

Key words:
crystal structure,topology,photocatalysis,photoluminescence

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
17.08.2020.

Conference:
Contemporary Materials 2020 - Savremeni materijali