TY - JOUR

T1 - Synthesis and photophysical studies of a new benzimidazole derivative and its zinc(II) complexes

AU - Albrekht, Ya N.

AU - Plyusnin, V. F.

AU - Glebov, E. M.

AU - Milutka, M. S.

AU - Burlov, A. S.

AU - Koshchienko, Y. V.

AU - Vlasenko, V. G.

AU - Lazarenko, V. A.

AU - Popov, L. D.

N1 - The work was performed with the financial support of the Ministry of Science and Higher Education of the Russian Federation (State task in the field of scientific activity in 2023 FENW-2023-0011 ). EMG (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS ) acknowledge the core funding from the Russian Federal Ministry of Science and Higher Education.

PY - 2024/2

Y1 - 2024/2

N2 - The photochemical and photophysical properties of the new ligand N-[2-(5,6-dihydrobenzimidazo[1,2-c]quinazoline-6-yl)phenyl]-4-methylbenzolsulfamide (1) and its zinc complexes, namely [2-[(E)-[2-(1H-benzimidazol-2-yl)phenyl]iminomethyl]-N-(p-tolylsulfonyl)anilino]chloro-zinc (3) and acetoxy-[2-[(E)-[2-(1H-benzimidazol-2-yl)phenyl]iminomethyl]-N-(p-tolylsulfonyl)anilino]zinc (4) were studied using UV spectroscopy, time-resolved luminescence and stationary photolysis. Compound 1 combines the properties of Schiff bases and benzimidazole derivatives, both known as good luminophores. The structures of compounds in the crystalline state were determined by means of XRD. Ligand 1 demonstrates high photoluminescence quantum yields (PLQY) in solutions, while for the soluble zinc complex 3 it drops in an order of magnitude. PLQY in the solid state for all the compounds are moderate (0.2–0.3). For complex 3 the PLQY in the solid state is ca. 3 times higher than in solutions, demonstrating the effect of aggregation-induced enhancement of luminescence. The approach based on combining properties of the two classes of luminophores seems prospective for further development of luminescent materials.

AB - The photochemical and photophysical properties of the new ligand N-[2-(5,6-dihydrobenzimidazo[1,2-c]quinazoline-6-yl)phenyl]-4-methylbenzolsulfamide (1) and its zinc complexes, namely [2-[(E)-[2-(1H-benzimidazol-2-yl)phenyl]iminomethyl]-N-(p-tolylsulfonyl)anilino]chloro-zinc (3) and acetoxy-[2-[(E)-[2-(1H-benzimidazol-2-yl)phenyl]iminomethyl]-N-(p-tolylsulfonyl)anilino]zinc (4) were studied using UV spectroscopy, time-resolved luminescence and stationary photolysis. Compound 1 combines the properties of Schiff bases and benzimidazole derivatives, both known as good luminophores. The structures of compounds in the crystalline state were determined by means of XRD. Ligand 1 demonstrates high photoluminescence quantum yields (PLQY) in solutions, while for the soluble zinc complex 3 it drops in an order of magnitude. PLQY in the solid state for all the compounds are moderate (0.2–0.3). For complex 3 the PLQY in the solid state is ca. 3 times higher than in solutions, demonstrating the effect of aggregation-induced enhancement of luminescence. The approach based on combining properties of the two classes of luminophores seems prospective for further development of luminescent materials.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85175706342&origin=inward&txGid=9526e827a3c683fd2beab1e14b212ca4

UR - https://www.mendeley.com/catalogue/798c95dd-2707-34cd-b26d-04a0ada7cf29/

U2 - 10.1016/j.jlumin.2023.120286

DO - 10.1016/j.jlumin.2023.120286

M3 - Article

VL - 266

JO - Journal of Luminescence

JF - Journal of Luminescence

SN - 0022-2313

M1 - 120286

ER -