Photoinduced charge transfer in the supramolecular structure based on toroid polyoxomolibdate Mo-138 and xanthene dye - Rhodamine-B / Grzhegorzhevskii Kirill,Ostroushko Alexander,Koriakova Olga,Ovchinnikova Irina,Kim Grigoriy // INORGANICA CHIMICA ACTA. - 2015. - V. 436, l. . - P. 205-213.

ISSN/EISSN:
0020-1693 / 1873-3255
Type:
Article
Abstract:
The new supramolecular structure based on the toroid nanoclustered giant polyoxomolybdate (POM) Mo-138 and xanthene dye (rhodamine-B) was synthesized by a self-assembly technique in solution and was extracted in the solid state for the first time. Fluorescence studies of this structure have shown a very effective energy transfer (conditioned by the charge transfer and/or fluorescence resonance energy transfer mechanisms) from a dye molecule to a nanocluster under excitation by visible light (522 and 558 nm). The promotion of potential catalytic properties of polyoxomolybdate or revealing nonlinear optical properties could be expected there due to the presence of Mo-V and Mo-VI sites in Mo-138. Raman-spectroscopy showed significant changes for vibrating bands of the rhodamine-B conditioned by the energy transfer. Investigations of the supramolecular structure by zeta-potential and size distribution measurements allowed us to determine an interaction mechanism between the components in solution. Spatial location of dye molecules on the polyoxomolybdate surface and the integrity of nanocluster Mo-138 in the supramolecular structure were found by FTIR-spectroscopy. The calculation of HOMO-LUMO electron transition of rhodamine-B by the Time-Dependent Density Functional Theory (TDDFT) technique revealed the potential overlapping between molecular orbitals of adsorbed dye molecules and POM's surface. That is well-correlated with the overlapping of fluorescence and absorption spectrums of rhodamine-B and the nanocluster respectively. (C) 2015 Elsevier B.V. All rights reserved.
Author keywords:
Supramolecular structure; Charge transfer; Polyoxomolybdate; Vibration spectroscopy; DFT calculation; Luminescence MOLYBDENUM OXIDE; RAMAN-SPECTROSCOPY; NANOCLUSTER; SYSTEM; OXYGEN; MATTER; FORMS; WHEEL; IONS
DOI:
10.1016/j.ica.2015.07.041
Web of Science ID:
ISI:000361187700026
Соавторы в МНС:
Другие поля
Поле Значение
Month SEP 1
Publisher ELSEVIER SCIENCE SA
Address PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language English
EISSN 1873-3255
Keywords-Plus MOLYBDENUM OXIDE; RAMAN-SPECTROSCOPY; NANOCLUSTER; SYSTEM; OXYGEN; MATTER; FORMS; WHEEL; IONS
Research-Areas Chemistry
Web-of-Science-Categories Chemistry, Inorganic \& Nuclear
Author-Email kirillica5@mail.ru alexander.ostroush-ko@urfu.ru ir@ios.uran.ru iov@ios.uran.ru kim-g@ios.uran.ru
ResearcherID-Numbers Grzhegorzhevskii, Kirill/H-2978-2012 Kim, Grigory/P-3806-2017
ORCID-Numbers Grzhegorzhevskii, Kirill/0000-0003-3357-9672 Kim, Grigory/0000-0001-8814-5180
Funding-Acknowledgement Russian Foundation for Basic Research {[}15-03-03603]
Funding-Text This work was supported by the Russian Foundation for Basic Research (project no. 15-03-03603).
Number-of-Cited-References 20
Usage-Count-Last-180-days 2
Usage-Count-Since-2013 28
Journal-ISO Inorg. Chim. Acta
Doc-Delivery-Number CR2VB