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Safonova EA, Martynov AG, Nefedov SE, Kirakosyan GA, Gorbunova YG, Tsivadze AY. A Molecular Chameleon: Reversible pH- and Cation-Induced Control of the Optical Properties of Phthalocyanine-Based Complexes in the Visible and Near-Infrared Spectral Ranges. Inorg Chem 2016; 55:2450-9. [PMID: 26910047 DOI: 10.1021/acs.inorgchem.5b02831] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of novel nonperipherally substituted tetra-15-crown-5-dibutoxyoxanthrenocyanines (H2, Mg, Zn), acting as chameleons with the unique properties of switchable absorption and emission in the near-infrared (NIR) spectral range have been synthesized and characterized by X-ray diffraction. The attachment of 15-crown-5-α-dibutoxyoxanthreno moieties to phthalocyanine is responsible for the high solubility of the resulting molecules and the red shift of the Q band to the NIR region and offers a unique possibility for postsynthetic modification of the optical properties of the molecules. Both aggregation of phthalocyanine and its participation in an acid-base equilibrium strongly alter their optical properties. For example, the absorption of complexes can be reversibly tuned from 686 up to 1028 nm because of the cation-induced formation of supramolecular dimers or subsequent protonation of meso-N atoms orf macrocycle, in contrast to peripherally substituted tetra-15-crown-5-phthalocyanines without oxanthrene moieties. The reversibility of these processes can be controlled by the addition of [2.2.2]cryptand or amines. All investigated compounds exhibit fluorescence with moderate quantum yield, which can also be switched between the ON and OFF states by the action of similar agents.
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Affiliation(s)
- Evgeniya A Safonova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , Leninskii pr. 31, bldg. 4, Moscow 119071, Russia
| | - Alexander G Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , Leninskii pr. 31, bldg. 4, Moscow 119071, Russia
| | - Sergey E Nefedov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninskii pr. 31, Moscow 119991, Russia
| | - Gayane A Kirakosyan
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , Leninskii pr. 31, bldg. 4, Moscow 119071, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninskii pr. 31, Moscow 119991, Russia
| | - Yulia G Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , Leninskii pr. 31, bldg. 4, Moscow 119071, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninskii pr. 31, Moscow 119991, Russia
| | - Aslan Yu Tsivadze
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , Leninskii pr. 31, bldg. 4, Moscow 119071, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninskii pr. 31, Moscow 119991, Russia
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Safonova EA, Martynov AG, Zolotarevskii VI, Nefedov SE, Gorbunova YG, Tsivadze AY. Design of UV-Vis-NIR panchromatic crown-phthalocyanines with controllable aggregation. Dalton Trans 2015; 44:1366-78. [PMID: 25423480 DOI: 10.1039/c4dt02759k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel magnesium and zinc phthalocyaninates, bearing four lateral electron-rich 15-crown-5-oxanthrene fragments, were synthesized starting from benzo-15-crown-5. Being almost insoluble in common organic solvents, these complexes could be solubilised by interaction with potassium acetate due to the formation of well-defined cofacial supramolecular dimers. A characteristic feature of these dimers is the presence of additional bands in their UV-Vis spectra, which affords the expansion of light absorption region up to ∼750 nm. This new band corresponds to the charge transfer from the peripheral groups to the Pc core, as evidenced by TDDFT calculations. Potassium cations can be reversibly removed from these dimers by [2.2.2]cryptand, resulting in the formation of monodisperse nanoparticles exhibiting absorbances up to 900 nm. This approach can be further used for the fabrication of nanostructured optoelectronic materials based on the synthesized donor-acceptor panchromatic crown-phthalocyanines.
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Affiliation(s)
- Evgeniya A Safonova
- A.N. Frumkin, Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg. 4, Moscow, Russia.
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Mayerle JJ. Structural characterization of the charge-transfer complex formed by bis(propene-3-thione-1-thiolato)platinum(II) and tetracyanoquinodimethane, (C3H3S2)2Pt-C12H4N4. Inorg Chem 2002. [DOI: 10.1021/ic50170a039] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Goldberg I, Bernstein J, Kosower EM, Goldstein E, Pazhenchevsky B. Bimanes.19. Characteristics of the molecular structures of 1,5-diazabicyclo[3.3.0]octadienediones (9,10-dioxabimanes) determined by x-ray crystallography. J Heterocycl Chem 1983. [DOI: 10.1002/jhet.5570200412] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Crystal and molecular structure of the complex formed by 2, 3, 7, 8-tetramethoxythianthrene with 7, 7, 8, 8-tetracyanoquinodimethane. J STRUCT CHEM+ 1978. [DOI: 10.1007/bf00746112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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The characteristic crystal-chemical features of the structure of molecular charge-transfer complexes. J STRUCT CHEM+ 1977. [DOI: 10.1007/bf00746241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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