Research output: Contribution to journal › Article › peer-review
Dual Emissive Mono- and Bis-alkynylpyridinium Pt(II) Complexes: Synthesis and Luminescent Properties. / Грачева, Елена Валерьевна; Миронова, Алина Дмитриевна; Петровский, Станислав Константинович; Сизов, Владимир Викторович; Сизова, Анастасия Андреевна; Падерина, Александра Владимировна; Müller, Christian.
In: Organometallics, 25.06.2024.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Dual Emissive Mono- and Bis-alkynylpyridinium Pt(II) Complexes: Synthesis and Luminescent Properties
AU - Грачева, Елена Валерьевна
AU - Миронова, Алина Дмитриевна
AU - Петровский, Станислав Константинович
AU - Сизов, Владимир Викторович
AU - Сизова, Анастасия Андреевна
AU - Падерина, Александра Владимировна
AU - Müller, Christian
PY - 2024/6/25
Y1 - 2024/6/25
N2 - A series of bis- and monoalkynyl Pt(II) complexes with 4,4′-di-tert-butyl-2,2′-bipyridine (dtbpy, 1-3), 1,10-phenantroline (phen, 4-6), 4,6-diphenyl-2,2′-bipyridine (ppbipy, 7-10), and alkynylpyridinium ligands were synthesized. “D−π-A” alkynylpyridinium compounds contain a methyl or mesitylene pyridinium acceptor group attached to the donor alkynyl site via various π-conjugated aromatic linkers. The variation of the π-linker in the alkynylpyridinium ligand allows one to tune the photophysical properties of the Pt(II) complexes by modifying the electronic properties and intersystem charge transfer in the resulting organometallic “D−π-A” system. All Pt(II) complexes obtained demonstrate complicated emission behavior in solution, namely dual fluorescent/phosphorescent emission. At the same time, no aggregation at high concentration in solution and in the solid phase was detected. TDDFT calculations show that the transitions related to emission of the complexes 1-10 are strongly associated with the hybrid MLCT/ILCT charge transfer inside the {Pt-C≡C-R} unit, thus demonstrating that the complex molecule acts as a unified “D−π-A” system.
AB - A series of bis- and monoalkynyl Pt(II) complexes with 4,4′-di-tert-butyl-2,2′-bipyridine (dtbpy, 1-3), 1,10-phenantroline (phen, 4-6), 4,6-diphenyl-2,2′-bipyridine (ppbipy, 7-10), and alkynylpyridinium ligands were synthesized. “D−π-A” alkynylpyridinium compounds contain a methyl or mesitylene pyridinium acceptor group attached to the donor alkynyl site via various π-conjugated aromatic linkers. The variation of the π-linker in the alkynylpyridinium ligand allows one to tune the photophysical properties of the Pt(II) complexes by modifying the electronic properties and intersystem charge transfer in the resulting organometallic “D−π-A” system. All Pt(II) complexes obtained demonstrate complicated emission behavior in solution, namely dual fluorescent/phosphorescent emission. At the same time, no aggregation at high concentration in solution and in the solid phase was detected. TDDFT calculations show that the transitions related to emission of the complexes 1-10 are strongly associated with the hybrid MLCT/ILCT charge transfer inside the {Pt-C≡C-R} unit, thus demonstrating that the complex molecule acts as a unified “D−π-A” system.
UR - https://www.mendeley.com/catalogue/c4a0f700-f95d-37bc-a067-be3e345a67df/
U2 - 10.1021/acs.organomet.4c00115
DO - 10.1021/acs.organomet.4c00115
M3 - Article
JO - Organometallics
JF - Organometallics
SN - 0276-7333
ER -
ID: 121098897