Photophysics and photochemistry of (n‑Bu4N)2[Pt(NO3)6] in acetonitrile: ultrafast pump‑probe spectroscopy and quantum chemical insight

Photophysics and photochemistry of (n‑Bu4N)2[Pt(NO3)6] in acetonitrile: ultrafast pump‑probe spectroscopy and quantum chemical insight Full article

Journal

Photochemical and Photobiological Sciences
ISSN: 1474-9092 , E-ISSN: 1474-905X

Output data

Year: 2024, Volume: 23, Pages: 1957–1970 Pages count : DOI: 10.1007/s43630-024-00645-z

Tags

Photochemistry,Photophysics, Platinum(iv) complexes, Acetonitrile, NO3 radical, Ultrafast TA spectroscopy, Quantum chemical calculations

Authors

Fedunov Roman G. ¹ , Grivin Vjacheslav P. ¹ , Pozdnyakov Ivan P. ¹ , Melnikov Alexei A. ² , Chekalin Sergei V. ² , Vasilchenko Danila B. ³ , Glebov Evgeni M. ^1,4

Affiliations

1	V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences
2	Institute of Spectroscopy, Russian Academy of Sciences
3	A.V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences
4	Novosibirsk State University

The ultrafast processes caused by photoexcitation of (n-Bu4N)2[Pt(NO3)6] complex in acetonitrile were studied by means of transient absorption (TA) pump-probe spectroscopy and verifed by quantum chemical calculations. The primary photochemical process was found to be an inner-sphere electron transfer followed by an escape of an •NO3 radical to the bulk solution. The reaction occurs via the dissociative triplet excited LMCT state of the initial complex. Based on the experimental data and quantum chemical calculations, the mechanism of ultrafast photophysical and photochemical processes is proposed.

Fedunov R.G. , Grivin V.P. , Pozdnyakov I.P. , Melnikov A.A. , Chekalin S. , Vasilchenko D.B. , Glebov E.M.
Photophysics and photochemistry of (n‑Bu4N)2[Pt(NO3)6] in acetonitrile: ultrafast pump‑probe spectroscopy and quantum chemical insight
Photochemical and Photobiological Sciences. 2024. V.23. P.1957–1970. DOI: 10.1007/s43630-024-00645-z WOS Scopus OpenAlex

Submitted:	Jun 15, 2024
Accepted:	Sep 30, 2024
Published print:	Oct 15, 2024
Published online:	Oct 15, 2024

Web of science:	WOS:001332733600001
Scopus:	2-s2.0-85207285745
OpenAlex:	W4403423482

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