Structure and emission properties of dinuclear copper(I) complexes with pyridyltriazole. / Gusev, Alexey; Kiskin, Mikhail; Braga, Elena; Zamnius, Ekaterina ; Kryukova, Mariya ; Karaush-Karmazin, Nataliya; Baryshnikov, Glib ; Minaev, Boris; Linert, Wolfgang .
In: RSC Advances, Vol. 13, No. 6, 24.01.2023, p. 3899-3909.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Structure and emission properties of dinuclear copper(I) complexes with pyridyltriazole
AU - Gusev, Alexey
AU - Kiskin, Mikhail
AU - Braga, Elena
AU - Zamnius, Ekaterina
AU - Kryukova, Mariya
AU - Karaush-Karmazin, Nataliya
AU - Baryshnikov, Glib
AU - Minaev, Boris
AU - Linert, Wolfgang
N1 - This journal is © The Royal Society of Chemistry.
PY - 2023/1/24
Y1 - 2023/1/24
N2 - A new series of five highly emissive binuclear heteroleptic pyridyltriazole-Cu(i)-phosphine complexes 1-5 was synthesized and examined by different experimental (IR, elemental and thermogravimetric analysis, single crystal X-ray diffraction technique, UV-vis and fluorescence spectroscopy) and quantum chemical aproaches. Complexes 1-5 exhibited excellent stimuli-responsive photoluminescent performance in the solid state at room temperature (quantum yield (QY) = 27.5-52.0%; lifetime ( τ) = 8.3-10.7 μs) and when the temperature was lowered to 77 K (QY = 38.3-88.2; τ = 17.8-134.7 μs). The highest QY was examined for complex 3 (52%) that can be explained by the small structural changes between the ground S 0 and exited S 1 and T 1 states leading to the small S 1-T 1 triplet gap and efficient thermally-activated delayed fluorescence. Moreover, complex 4 demonstrates reversible mechanochromic and excitation dependent luminescence.
AB - A new series of five highly emissive binuclear heteroleptic pyridyltriazole-Cu(i)-phosphine complexes 1-5 was synthesized and examined by different experimental (IR, elemental and thermogravimetric analysis, single crystal X-ray diffraction technique, UV-vis and fluorescence spectroscopy) and quantum chemical aproaches. Complexes 1-5 exhibited excellent stimuli-responsive photoluminescent performance in the solid state at room temperature (quantum yield (QY) = 27.5-52.0%; lifetime ( τ) = 8.3-10.7 μs) and when the temperature was lowered to 77 K (QY = 38.3-88.2; τ = 17.8-134.7 μs). The highest QY was examined for complex 3 (52%) that can be explained by the small structural changes between the ground S 0 and exited S 1 and T 1 states leading to the small S 1-T 1 triplet gap and efficient thermally-activated delayed fluorescence. Moreover, complex 4 demonstrates reversible mechanochromic and excitation dependent luminescence.
UR - https://www.mendeley.com/catalogue/8a7e4ae5-d3e5-3885-8fa8-b261f64c0035/
U2 - 10.1039/d2ra06986e
DO - 10.1039/d2ra06986e
M3 - Article
C2 - 36756544
VL - 13
SP - 3899
EP - 3909
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 6
ER -
ID: 106953635