Synthesis and Thermochromic Luminescence of Ag(I) Complexes Based on 4,6-Bis(diphenylphosphino)-Pyrimidine Full article
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Inorganics
ISSN: 2304-6740 |
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| Output data | Year: 2020, Volume: 8, Number: 9, Article number : 46, Pages count : 12 DOI: 10.3390/inorganics8090046 | ||
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Abstract:
Two Ag(I)-based metal-organic compounds have been synthesized exploiting 4,6-bis(diphenylphosphino)pyrimidine (L). The reaction of this ligand with AgNO3 and AgBF4 in acetonitrile produces dinuclear complex, [Ag2L2(MeCN)2(NO3)2] (1) and 1D coordination polymer, [Ag2L(MeCN)3]n(BF4)2n (2), respectively. In complex 1, µ2-P,P′-bridging coordination pattern of the ligand L is observed, whereas its µ4-P,N,N′,P′-coordination mode appears in 2. Both compounds exhibit pronounced thermochromic luminescence expressed by reversible changing of the emission chromaticity from a yellow at 300 K to an orange at 77 K. At room temperature, the emission lifetimes of 1 and 2 are 15.5 and 9.4 µs, the quantum efficiency being 18 and 56%, respectively. On account of temperature-dependent experimental data, the phenomenon was tentatively ascribed to alteration of the emission nature from thermally activated delayed fluorescence at 300 K to phosphoresce at 77 K.
Cite:
Artem’ev A.V.
, Davydova M.P.
, Berezin A.S.
, Samsonenko D.G.
Synthesis and Thermochromic Luminescence of Ag(I) Complexes Based on 4,6-Bis(diphenylphosphino)-Pyrimidine
Inorganics. 2020. V.8. N9. 46 :1-12. DOI: 10.3390/inorganics8090046 WOS Scopus OpenAlex
Synthesis and Thermochromic Luminescence of Ag(I) Complexes Based on 4,6-Bis(diphenylphosphino)-Pyrimidine
Inorganics. 2020. V.8. N9. 46 :1-12. DOI: 10.3390/inorganics8090046 WOS Scopus OpenAlex
Dates:
| Submitted: | Aug 6, 2020 |
| Accepted: | Aug 24, 2020 |
| Published online: | Aug 26, 2020 |
Identifiers:
| Web of science: | WOS:000578167900001 |
| Scopus: | 2-s2.0-85090760874 |
| OpenAlex: | W3081148669 |