Size Effects in Photoexcitation of Triplet States of Ammonium Tetraphenylborate | Sciact - CRIS-system of Boreskov Institute of Catalysis

Size Effects in Photoexcitation of Triplet States of Ammonium Tetraphenylborate Full article

Journal

Physics of the Solid State
ISSN: 1063-7834 , E-ISSN: 1090-6460

Output data

Year: 2011, Volume: 53, Number: 2, Pages: 284-291 Pages count : 8 DOI: 10.1134/S106378341102020X

Tags

DPPH; Triplet State; Hole Pair; Mesoporous Structure; Paramagnetic Center

Authors

Nadolinny V.A. ¹ , Antonova O.V. ¹ , Ilʹinchik E.A. ¹ , Kovalev M.K. ² , Melʹgunov M.S. ² , Yelisseev A.P. ³ , Ryadun A.A. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia
2	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090, Russia
3	Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia

Funding (1)

Президиум РАН

This paper reports on the results of complex investigations of photoexcited states of ammonium tetraphenylborate, which are characterized by selfsensitized luminescence. It has been established that the excitation by UV light at 77 K leads to the formation of stable triplet states due to the capture of electrons on electron traps. The EPR and luminescence excitation spectra exhibit the formation of a set of triplet states with different distances between electrons and holes. The performed investigations give grounds to affirm that, in bulk samples, cations in the structure of ammonium tetraphenylborate are electron traps. When the size of the ammonium tetraphenylborate sample is changed to 6 and 3 nm, the capture of excited electrons on sorbed oxygen molecules becomes dominant. In this case, the appearance of the spectrum of anion radicals has been detected by the EPR method. The proposed interpretation of the observed effects has been confirmed by the thermoluminescence data on the recombination of electron–hole pairs, which correlate with a change in the intensity of the EPR spectra during annealing.

Nadolinny V.A. , Antonova O.V. , Ilʹinchik E.A. , Kovalev M.K. , Melʹgunov M.S. , Yelisseev A.P. , Ryadun A.A.
Size Effects in Photoexcitation of Triplet States of Ammonium Tetraphenylborate
Physics of the Solid State. 2011. V.53. N2. P.284-291. DOI: 10.1134/S106378341102020X WOS Scopus РИНЦ ANCAN OpenAlex

Надолинный В.А. , Антонова О.В. , Ильинчик Е.А. , Ковалев М.К. , Мельгунов М.С. , Елисеев А.П. , Рядун А.А.
Размерные эффекты при фотовозбуждении триплетных состояний тетрафенилбората аммония
Физика твердого тела. 2011. Т.53. №2. С.266-273. РИНЦ

Submitted:	May 12, 2010
Published print:	Feb 1, 2011
Published online:	Feb 22, 2011

Web of science:	WOS:000287597800010
Scopus:	2-s2.0-79951890305
Elibrary:	16872428
Chemical Abstracts:	2011:222112
Chemical Abstracts (print):	154:321603
OpenAlex:	W1986664547

DB	Citing
Web of science	1
Scopus	1
Elibrary	1
OpenAlex	1