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Degtyareva SS, Bardonov DA, Afanaseva AV, Puntus LN, Lyssenko KA, Birin KP, Minyaev ME, Burykina JV, Taydakov IV, Varaksina EA, Nifant'ev IE, Roitershtein DM. Tridentate Nitrogen Ligand as a Tool for the Construction of Well-Defined Rare Earth Trichloride Complexes. Inorg Chem 2024; 63:1867-1878. [PMID: 38237143 DOI: 10.1021/acs.inorgchem.3c03492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
LnCl3(THF)3 (Ln = Y, La ÷ Nd, Sm ÷ Lu) readily react with the tridentate 1,3,5-trimethyl-1,3,5-triazacyclohexane (Me3tach) ligand to form mono- or binuclear lanthanide trichloride complexes, depending on the stoichiometry of the reaction and the ionic radius of the metal: mononuclear pseudosandwich [LnCl3(Me3tach)2], (Ln = Y, La ÷ Ho) or binuclear complexes [Ln2Cl6(Me3tach)3], or [LnCl3(Me3tach)(THF)]2 (Ln = Sm, Tb). Detailed analysis of the NMR data of [LnCl3(Me3tach)2] complexes with paramagnetic lanthanide ions showed that their structures remained unchanged in the toluene solution. A series of isomorphous complexes [LnCl3(Me3tach)(Py)2] (Ln = La, Sm, Tb, Er, Lu; Py = pyridine) have been obtained by the recrystallization of either mononuclear or binuclear complexes from pyridine. Complexes of terbium and europium ions with the Me3tach ligand exhibit relatively high quantum yields of metal-centered luminescence (0.39 and 0.32, respectively).
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Affiliation(s)
- Svetlana S Degtyareva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- National Research University Higher School of Economics (HSE University), 101000 Moscow, Russian Federation
| | - Daniil A Bardonov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- National Research University Higher School of Economics (HSE University), 101000 Moscow, Russian Federation
| | - Anna V Afanaseva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- National Research University Higher School of Economics (HSE University), 101000 Moscow, Russian Federation
| | - Lada N Puntus
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- V.A. Kotel'nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, Fryazino, 141190 Moscow, Russian Federation
| | - Konstantin A Lyssenko
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
| | - Kirill P Birin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russian Federation
| | - Mikhail E Minyaev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Julia V Burykina
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Ilya V Taydakov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Evgenia A Varaksina
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Ilya E Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
| | - Dmitrii M Roitershtein
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- National Research University Higher School of Economics (HSE University), 101000 Moscow, Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
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2
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Babailov SP, Polovkova MA, Zapolotsky EN, Kirakosyan GA, Martynov AG, Gorbunova YG. Nuclear magnetic resonance thermosensing properties of holmium(III) and thulium(III) tris(tetra-15-crown-5-phthalocyaninato) complexes. J PORPHYR PHTHALOCYA 2022. [DOI: 10.1142/s1088424622500201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Temperature dependences of paramagnetic chemical shifts in NMR spectra of lanthanide tris-phthalocyaninates Ln2[(15C5)4Pc]3 (where [(15C5)4Pc][Formula: see text] is 2,3,9,10,16,17,24,25-tetrakis(15-crown-5)phthalocyaninate dianion, Ln = Ho(III), Tm(III)) have been studied in the physiological temperature range (from 303 to 323 K). The observed maximum temperature sensitivity [Formula: see text]/dTturns out to be 0.25 ppm/K for the signals of the thulium complex and 0.16 ppm/K for the holmium complex. By the example of Tm2[(15C5)4Pc]3, it has been shown that the use of temperature sensitivities normalized to signal half-widths ([Formula: see text]CT[Formula: see text]/[Formula: see text] is expedient to judge the applicability of the observed temperature dependences of LISs of analogous lanthanide complexes (Ln = Tb, Dy, Ho, Tm) for determining temperatures. The investigated kinetically and thermodynamically stable Ln2[(15C5)4Pc]3 complexes can be considered promising for the design of thermosensitive NMR probes for determination of the local temperature in nonpolar solutions.
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Affiliation(s)
- Sergey P. Babailov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Av. Lavrentyev 3, Novosibirsk, 630090, Russian Federation
| | - Marina A. Polovkova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31-4, Moscow, 119071, Russian Federation
| | - Evgeny N. Zapolotsky
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Av. Lavrentyev 3, Novosibirsk, 630090, Russian Federation
| | - Gayane A. Kirakosyan
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31-4, Moscow, 119071, Russian Federation
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, Russian Federation
| | - Alexander G. Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31-4, Moscow, 119071, Russian Federation
| | - Yulia G. Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31-4, Moscow, 119071, Russian Federation
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, Russian Federation
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Martynov AG, Polovkova MA, Kirakosyan GA, Zapolotsky EN, Babailov SP, Gorbunova YG. 1H NMR Spectral Analysis of Structural Features in a Series of Paramagnetic Homoleptic Binuclear Triple-Decker Phthalocyaninato Lanthanide Complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Martynov AG, Horii Y, Katoh K, Bian Y, Jiang J, Yamashita M, Gorbunova YG. Rare-earth based tetrapyrrolic sandwiches: chemistry, materials and applications. Chem Soc Rev 2022; 51:9262-9339. [DOI: 10.1039/d2cs00559j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review summarises advances in chemistry of tetrapyrrole sandwiches with rare earth elements and highlights the current state of their use in single-molecule magnetism, organic field-effect transistors, conducting materials and nonlinear optics.
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Affiliation(s)
- Alexander G. Martynov
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg.4, Moscow, Russia
| | - Yoji Horii
- Department of Chemistry, Faculty of Science, Nara Women's University, Nara 630-8506, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan
| | - Yongzhong Bian
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Daxing Research Institute, and Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Daxing Research Institute, and Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg.4, Moscow, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Leninskiy pr., 31, Moscow, Russia
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5
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Chan WL, Xie C, Lo WS, Bünzli JCG, Wong WK, Wong KL. Lanthanide-tetrapyrrole complexes: synthesis, redox chemistry, photophysical properties, and photonic applications. Chem Soc Rev 2021; 50:12189-12257. [PMID: 34553719 DOI: 10.1039/c9cs00828d] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tetrapyrrole derivatives such as porphyrins, phthalocyanines, naphthalocyanines, and porpholactones, are highly stable macrocyclic compounds that play important roles in many phenomena linked to the development of life. Their complexes with lanthanides are known for more than 60 years and present breath-taking properties such as a range of easily accessible redox states leading to photo- and electro-chromism, paramagnetism, large non-linear optical parameters, and remarkable light emission in the visible and near-infrared (NIR) ranges. They are at the centre of many applications with an increasing focus on their ability to generate singlet oxygen for photodynamic therapy coupled with bioimaging and biosensing properties. This review first describes the synthetic paths leading to lanthanide-tetrapyrrole complexes together with their structures. The initial synthetic protocols were plagued by low yields and long reaction times; they have now been replaced with much more efficient and faster routes, thanks to the stunning advances in synthetic organic chemistry, so that quite complex multinuclear edifices are presently routinely obtained. Aspects such as redox properties, sensitization of NIR-emitting lanthanide ions, and non-linear optical properties are then presented. The spectacular improvements in the quantum yield and brightness of YbIII-containing tetrapyrrole complexes achieved in the past five years are representative of the vitality of the field and open welcome opportunities for the bio-applications described in the last section. Perspectives for the field are vast and exciting as new derivatizations of the macrocycles may lead to sensitization of other LnIII NIR-emitting ions with luminescence in the NIR-II and NIR-III biological windows, while conjugation with peptides and aptamers opens the way for lanthanide-tetrapyrrole theranostics.
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Affiliation(s)
- Wai-Lun Chan
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China. .,Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Chen Xie
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
| | - Wai-Sum Lo
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Jean-Claude G Bünzli
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China. .,Institute of Chemical Sciences & Engineering, Swiss Federal Institute of Technology, Lausanne (EPFL), Switzerland.
| | - Wai-Kwok Wong
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
| | - Ka-Leung Wong
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
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6
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Martynov AG, Polovkova MA, Berezhnoy GS, Sinelshchikova AA, Khrustalev VN, Birin KP, Kirakosyan GA, Gorbunova YG, Tsivadze AY. Heteroleptic Crown-Substituted Tris(phthalocyaninates) as Dynamic Supramolecular Scaffolds with Switchable Rotational States and Tunable Magnetic Properties. Inorg Chem 2021; 60:9110-9121. [PMID: 34076429 DOI: 10.1021/acs.inorgchem.1c01100] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Herein we report single-crystal X-ray diffraction characterization and complementary solution studies of supramolecular interaction between potassium salts and heteroleptic homo- and heteronuclear triple-decker crown phthalocyaninates [(15C5)4Pc]M*[(15C5)4Pc]M(Pc) or [M*,M], where M* and M = Y and/or Tb. Our results evidence that, in contrast to the previously studied crown-substituted phthalocyanines, the interaction of K+ cations with [M*,M] does not induce their intermolecular aggregation. Instead, the cations reversibly intercalate between the crown-substituted phthalocyanine ligands, resulting in switching of the coordination polyhedron of the metal center M* from square-antiprismatic to square-prismatic. In the case of terbium(III) complexes, such a switching alters their magnetic properties, which can be read-out by 1H NMR spectroscopy. For [Tb*,Y], such a switching causes an almost 25% increase in the axial component of the magnetic susceptibility tensor. Even though the polyhedron of the paramagnetic center in [Y*,Tb] is not switched, minor structural perturbations associated with the overall reorganization of the receptor also cause smaller, but nevertheless appreciable, growth of the axial anisotropy. The observed effects render the studied complexes as molecular switches with tunable magnetic properties.
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Affiliation(s)
- Alexander G Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Marina A Polovkova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Georgy S Berezhnoy
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
| | - Anna A Sinelshchikova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay St. 6, Moscow 117198, Russia.,Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, Moscow 119991, Russia
| | - Kirill P Birin
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Gayane A Kirakosyan
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
| | - Yulia G Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
| | - Aslan Yu Tsivadze
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
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7
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Gorbunova YG, Martynov AG, Birin KP, Tsivadze AY. NMR Spectroscopy—A Versatile Tool for Studying the Structure and Magnetic Properties of Paramagnetic Lanthanide Complexes in Solutions (Review). RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621020091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Martynov AG, Polovkova MA, Berezhnoy GS, Sinelshchikova AA, Dolgushin FM, Birin KP, Kirakosyan GA, Gorbunova YG, Tsivadze AY. Cation-Induced Dimerization of Heteroleptic Crown-Substituted Trisphthalocyaninates as Revealed by X-ray Diffraction and NMR Spectroscopy. Inorg Chem 2020; 59:9424-9433. [DOI: 10.1021/acs.inorgchem.0c01346] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander G. Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Marina A. Polovkova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Georgy S. Berezhnoy
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
| | - Anna A. Sinelshchikova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Fedor M. Dolgushin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Vavilova str. 28, Moscow 119991, Russia
| | - Kirill P. Birin
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
| | - Gayane A. Kirakosyan
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
| | - Yulia G. Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
| | - Aslan Yu. Tsivadze
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31-4, Moscow 119071, Russia
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr. 31, Moscow 119991, Russia
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9
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Horii Y, Kishiue S, Damjanović M, Katoh K, Breedlove BK, Enders M, Yamashita M. Supramolecular Approach for Enhancing Single-Molecule Magnet Properties of Terbium(III)-Phthalocyaninato Double-Decker Complexes with Crown Moieties. Chemistry 2018; 24:4320-4327. [PMID: 29265595 DOI: 10.1002/chem.201705378] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 11/10/2022]
Abstract
A TbIII -phthalocyaninato double-decker ([1]0 ) single-molecule magnet (SMM) having four 15-crown-5 moieties in one of the ligands was synthesized, and its dimerization and magnetic properties were studied in an attempt to utilize the supramolecular aggregation for enhancing the SMM properties. Aggregation of [1]0 to form [12 K4 ]4+ in the presence of K+ ions was studied by using UV/Vis-NIR absorption and NMR spectroscopies. For the magnetic measurements, [1]0 and [12 K4 ]4+ were dispersed in poly(methyl methacrylate) (PMMA). UV/Vis-NIR absorption measurements on the PMMA dispersed samples were used to track the formation of [12 K4 ]4+ . Direct current (DC) magnetic susceptibility measurements revealed that there were ferromagnetic Tb-Tb interactions in [12 K4 ]4+ , whereas there was no indication of ferromagnetic interactions in [1]0 . Upon the formation of [12 K4 ]4+ from [1]0 and K+ ions, the temperature at which the magnetic hysteresis occurred increased from 7 to 15 K. In addition, the area of magnetic hysteresis became larger for [12 K4 ]4+ , meaning that SMM properties of [12 K4 ]4+ are superior to those of [1]0 . Alternating current (AC) magnetic measurements were used to confirm this observation. Magnetic relaxation times at 2 K increased 1000-fold upon dimerization of [1]0 to [12 K4 ]4+ , demonstrating the effectiveness of using K+ ions to induce dimer formation for the improvement of the SMM properties.
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Affiliation(s)
- Yoji Horii
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Shuhei Kishiue
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, Karlsruhe, 76131, Germany.,Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Markus Enders
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan.,WPI Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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10
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Oluwole DO, Yagodin AV, Mkhize NC, Sekhosana KE, Martynov AG, Gorbunova YG, Tsivadze AY, Nyokong T. First Example of Nonlinear Optical Materials Based on Nanoconjugates of Sandwich Phthalocyanines with Quantum Dots. Chemistry 2017; 23:2820-2830. [PMID: 28001325 DOI: 10.1002/chem.201604401] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Indexed: 11/10/2022]
Abstract
We report original, selective, and efficient approaches to novel nonlinear optical (NLO) materials, namely homoleptic double- and triple-decker europium(III) complexes 2 and 3 with the A3 B-type phthalocyanine ligand (2,3-bis[2'-(2''-hydroxyethoxy)ethoxy]-9,10,16,17,23,24-hexa-n-butoxyphthalocyanine 1) bearing two anchoring diethyleneglycol chains terminated with OH groups. Their covalently linked nanoconjugates with mercaptosuccinic acid-capped ternary CdSeTe/CdTeS/ZnSeS quantum dots are prepared in the presence of an ethyl(dimethylaminopropyl)carbodiimide activating agent. Optical limiting (OL) properties of the obtained low-symmetry complexes and their conjugates with quantum dots (QDs) are measured for the first time by the open-aperture Z-scan technique (532 nm laser and pulse rate of 10 ns). For comparison, symmetrical double- and triple-decker EuIII octa-n-butoxyphthalocyaninates 5 and 6 and their mixtures with trioctylphosphine oxide-capped QDs are also synthesized and studied. It is revealed that both lowering of molecular symmetry and expansion of the π-electron system upon moving from double- to triple-decker complexes significantly improves the OL characteristics, making the low-symmetry triple-decker complex 3 the most efficient optical limiter in the studied family of sandwich complexes, affording 50 % lowering of light transmittance below 0.5 J cm-2 input fluence. Conjugation (both covalent and noncovalent) with QDs affords further enhancement of the OL properties of both double- and triple-decker complexes. Altogether, the obtained results contribute to the development of novel nonlinear optical materials for future nanoelectronic and optical device applications.
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Affiliation(s)
- David O Oluwole
- Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa
| | - Alexey V Yagodin
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr., 31, bldg. 4, Moscow, 119071, Russia.,Dmitry Mendeleev University of Chemical Technology of Russia, Miusskaya sq., 9, 125047, Moscow, Russia
| | | | | | - Alexander G Martynov
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr., 31, bldg. 4, Moscow, 119071, Russia
| | - Yulia G Gorbunova
- A. N. 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
- A. N. 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
| | - Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa
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11
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Damjanović M, Samuel PP, Roesky HW, Enders M. NMR analysis of an Fe(i)–carbene complex with strong magnetic anisotropy. Dalton Trans 2017; 46:5159-5169. [PMID: 28352888 DOI: 10.1039/c7dt00408g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A paramagnetic, easy-plane anisotropic FeI complex, bearing cyclic-alkyl(amino) carbene (cAAC) ligands, is studied by means of NMR and DFT.
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Affiliation(s)
- Marko Damjanović
- Institute of Inorganic Chemistry
- Heidelberg University
- D-69120 Heidelberg
- Germany
| | - Prinson P. Samuel
- Universität Göttingen
- Institut für Anorganische Chemie
- Göttingen
- Germany
| | - Herbert W. Roesky
- Universität Göttingen
- Institut für Anorganische Chemie
- Göttingen
- Germany
| | - Markus Enders
- Institute of Inorganic Chemistry
- Heidelberg University
- D-69120 Heidelberg
- Germany
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12
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Polovkova MA, Martynov AG, Birin KP, Nefedov SE, Gorbunova YG, Tsivadze AY. Determination of the Structural Parameters of Heteronuclear (Phthalocyaninato)bis(crownphthalocyaninato)lanthanide(III) Triple-Deckers in Solution by Simultaneous Analysis of NMR and Single-Crystal X-ray Data. Inorg Chem 2016; 55:9258-69. [DOI: 10.1021/acs.inorgchem.6b01292] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marina A. Polovkova
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
| | - Alexander G. Martynov
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
| | - Kirill P. Birin
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
| | - Sergey E. Nefedov
- 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, Building 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, Building 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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13
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Damjanović M, Morita T, Horii Y, Katoh K, Yamashita M, Enders M. How Ions Arrange in Solution: Detailed Insight from NMR Spectroscopy of Paramagnetic Ion Pairs. Chemphyschem 2016; 17:3423-3429. [DOI: 10.1002/cphc.201600804] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Marko Damjanović
- Institute of Inorganic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany), Tel: +49-6221-54-6247, Fax: +49-6221-54-161-6247
| | - Takaumi Morita
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Yoji Horii
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Keiichi Katoh
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Masahiro Yamashita
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Markus Enders
- Institute of Inorganic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany), Tel: +49-6221-54-6247, Fax: +49-6221-54-161-6247
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14
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Holmberg RJ, Polovkova MA, Martynov AG, Gorbunova YG, Murugesu M. Impact of the coordination environment on the magnetic properties of single-molecule magnets based on homo- and hetero-dinuclear terbium(iii) heteroleptic tris(crownphthalocyaninate). Dalton Trans 2016; 45:9320-7. [DOI: 10.1039/c6dt00777e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homonuclear and novel heteronuclear TbIII/YIII triple-decker heteroleptic crownphthalocyaninate complexes have been synthesized and studied for their SMM properties.
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Affiliation(s)
- Rebecca J. Holmberg
- Department of Chemistry and Biomolecular Sciences
- and Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Marina A. Polovkova
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS
- Moscow 119071
- Russia
| | - Alexander G. Martynov
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS
- Moscow 119071
- Russia
| | - Yulia G. Gorbunova
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS
- Moscow 119071
- Russia
- N. S. Kurnakov Institute of General and Inorganic Chemistry RAS
- Moscow 119991
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences
- and Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
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15
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Ligand π-Radical Interaction with f-Shell Unpaired Electrons in Phthalocyaninato-Lanthanoid Single-Molecule Magnets: A Solution NMR Spectroscopic and DFT Study. Chemistry 2015; 21:14421-32. [DOI: 10.1002/chem.201501944] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Indexed: 12/31/2022]
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16
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Lu G, Yan S, Shi M, Yu W, Li J, Zhu W, Ou Z, Kadish KM. A new class of rare earth tetrapyrrole sandwich complexes containing corrole and phthalocyanine macrocycles: synthesis, physicochemical characterization and X-ray analysis. Chem Commun (Camb) 2015; 51:2411-3. [PMID: 25563927 DOI: 10.1039/c4cc09755f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The first europium triple-decker tetrapyrrole with mixed corrole and phthalocyanine macrocycles was synthesized and characterized by spectroscopic and electrochemical methods. The molecular structure was characterized by single-crystal X-ray diffraction and showed the corrole to be in the middle of the sandwich with phthalocyanine macrocycles at each extreme.
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Affiliation(s)
- Guifen Lu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
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17
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Martynov AG, Gorbunova YG, Tsivadze AY. Crown-substituted phthalocyanines—components of molecular ionoelectronic materials and devices. RUSS J INORG CHEM+ 2014. [DOI: 10.1134/s0036023614140046] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Gorbunova Y, Guilard R. Preface. J PORPHYR PHTHALOCYA 2014. [DOI: 10.1142/s1088424614020015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Damjanovic M, Katoh K, Yamashita M, Enders M. Combined NMR Analysis of Huge Residual Dipolar Couplings and Pseudocontact Shifts in Terbium(III)-Phthalocyaninato Single Molecule Magnets. J Am Chem Soc 2013; 135:14349-58. [DOI: 10.1021/ja4069485] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marko Damjanovic
- Institute
of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Keiichi Katoh
- Department
of Chemistry, Graduate School of Science, Tohoku University, 6−3
Aramaki-Aza-Aoba, Sendai 980-8578, Japan
- JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Masahiro Yamashita
- Department
of Chemistry, Graduate School of Science, Tohoku University, 6−3
Aramaki-Aza-Aoba, Sendai 980-8578, Japan
- JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Markus Enders
- Institute
of Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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20
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Birin KP, Kamarova KA, Gorbunova YG, Tsivadze AY. Regiospecific synthesis of lanthanum(III) and neodymium(III) triple-decker (tetrakis-meso-(3-bromophenyl)-porphyrinato)(crownphthalocyaninates). J PORPHYR PHTHALOCYA 2013. [DOI: 10.1142/s1088424613500910] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The triple-decker complexes of symmetrical type [m Br 4 TPP ] Ln [(15 C 5)4 Pc ] Ln [m Br 4 TPP ] ( Ln -m TD ; Ln = La , Nd ; [(15 C 5)4 Pc ] = tetra-(15-crown-5)-phthalocyaninato-ligand; [m Br 4 TPP ] = tetrakis-meso-(3-bromophenyl)-porphyrinato-ligand) are synthesized for the first time with 43% and 36% yield. The applicability of the previously developed selective one-step synthetic approach for the preparation of the mentioned complexes is demonstrated and the limitations, determined by meta-substitution of meso-aryl-fragments, are revealed. The spectral features of the obtained complexes is determined by means of UV-vis and NMR spectroscopy. The hindered rotation of porphyrin meso-substituents in the obtained complexes and formation of statistical set of atropisomers are demonstrated.
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Affiliation(s)
- Kirill P. Birin
- A.N. Frumkin Institute of physical chemistry and electrochemistry RAS, Leninsky prosp. 31, bldg. 4, Moscow 119071, Russia
| | - Kamila A. Kamarova
- M.V. Lomonosov Moscow State University, Faculty of Chemistry, GSP-1, 1-3 Leninskiye Gory, Moscow 119991, Russia
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of physical chemistry and electrochemistry RAS, Leninsky prosp. 31, bldg. 4, Moscow 119071, Russia
- N.S. Kurnakov Institute of general and inorganic chemistry RAS, Leninsky prosp. 31, Moscow 119991, Russia
| | - Aslan Yu. Tsivadze
- A.N. Frumkin Institute of physical chemistry and electrochemistry RAS, Leninsky prosp. 31, bldg. 4, Moscow 119071, Russia
- N.S. Kurnakov Institute of general and inorganic chemistry RAS, Leninsky prosp. 31, Moscow 119991, Russia
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21
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22
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A novel efficient approach to heteronuclear triple-decker complexes of rare earth elements with phthalocyanines. Russ Chem Bull 2012. [DOI: 10.1007/s11172-011-0345-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Zhu P, Zhang X, Wang H, Zhang Y, Bian Y, Jiang J. Ferrocene-Decorated (Phthalocyaninato)(Porphyrinato) Double- and Triple-Decker Rare Earth Complexes: Synthesis, Structure, and Electrochemical Properties. Inorg Chem 2012; 51:5651-9. [PMID: 22554027 DOI: 10.1021/ic202613r] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peihua Zhu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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24
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Birin KP, Gorbunova YG, Tsivadze AY. The approach to the direct interpretation of 13C NMR of heteroleptic triple-decker (porphyrinato)(phthalocyaninato) lanthanum(III) without carbon labeling. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424611003598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A complete assignment of 13C NMR resonance peaks in the spectrum of heteroleptic triple-decker (porphyrinato)(phthalocyaninato) lanthanum of type [Br4TPP]La[(15C5)4Pc]La[Br4TPP] ( Br4TPP = 5,10,15,20-tetrakis-(4-bromophenyl)-porphyrinato-ligand, (15C5)4Pc = tetrakis-(15-crown-5)-phthalocyaninato-ligand) is performed. Application of set of gradient-enhanced homonuclear 1H-1H-correlation techniques (COSY and NOESY) allowed the unambiguous interpretation of proton spectrum of the complex. Application of INEPT polarization transfer technique allowed to separate quaternary carbon resonances from proton-bound carbon ones. Gradient-enhanced proton-detected HMQC and HMBC techniques allowed to correlate all the resonances in 13C-spectrum.
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Affiliation(s)
- Kirill P. Birin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninsky pr. 31, Moscow 109071, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky pr. 31, Moscow 119991, Russia
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninsky pr. 31, Moscow 109071, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky pr. 31, Moscow 119991, Russia
| | - Aslan Yu. Tsivadze
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninsky pr. 31, Moscow 109071, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky pr. 31, Moscow 119991, Russia
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25
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Birin KP, Gorbunova YG, Tsivadze AY. Efficient scrambling-free synthesis of heteroleptic terbium triple-decker (porphyrinato)(crown-phthalocyaninates). Dalton Trans 2012; 41:9672-81. [DOI: 10.1039/c2dt30841j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Birin KP, Gorbunova YG, Tsivadze AY. Selective one-step synthesis of triple-decker (porphyrinato)(phthalocyaninato) early lanthanides: the balance of concurrent processes. Dalton Trans 2011; 40:11539-49. [PMID: 21952519 DOI: 10.1039/c1dt11141h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective one-step approach for the preparation of (porphyrinato)(phthalocyaninato) early lanthanides of type [Br(4)TPP]Ln[(15C5)(4)Pc]Ln[Br(4)TPP], where Br(4)TPP = 5,10,15,20-tetrakis-(4-bromophenyl)-porphyrinato-ligand, (15C5)(4)Pc = tetrakis-(15-crown-5)-phthalocyaninato-ligand and Ln = La, Pr, Nd or Eu, is developed. The influence of various factors on the reaction pathway and yields of the complexes is investigated in detail. The developed protocol is found to be general for the early lanthanide subgroup. Variation of the synthetic conditions allowed the determination and isolation of possible side-products, namely heteroleptic double-deckers [Br(4)TPP]Ln[(15C5)(4)Pc] (Ln = Nd, Eu) and triple-decker [Br(4)TPP]Nd[(15C5)(4)Pc]Nd[(15C5)(4)Pc]. The peculiarities of the NMR lanthanide-induced shifts (LIS) of resonances of the synthesized triple-decker complexes are precisely investigated. The isostructurality of the synthesized complexes within the series as well as isostructurality with previously synthesized compounds is demonstrated in terms of two-nuclei analysis of LIS.
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Affiliation(s)
- Kirill P Birin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninsky pr., 31, 119991, Moscow, Russia
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27
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Zhu X, Wong W, Wong W, Yang X. Design and Synthesis of Near‐Infrared Emissive Lanthanide Complexes Based on Macrocyclic Ligands. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100481] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xunjin Zhu
- Institute of Molecular Functional Materials (Areas of Excellence Scheme University Grants Committee, Hong Kong) and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
| | - Wai‐Kwok Wong
- Institute of Molecular Functional Materials (Areas of Excellence Scheme University Grants Committee, Hong Kong) and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
| | - Wai‐Yeung Wong
- Institute of Molecular Functional Materials (Areas of Excellence Scheme University Grants Committee, Hong Kong) and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
| | - Xiaoping Yang
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712‐0165, USA, Fax: +1‐852‐3411‐7348
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28
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Martynov AG, Gorbunova YG, Tsivadze AY. Novel approaches to model-free analysis of lanthanide-induced shifts, targeted to the investigation of contact term behavior. Dalton Trans 2011; 40:7165-71. [DOI: 10.1039/c1dt10455a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Birin KP, Gorbunova YG, Tsivadze AY. NMR investigation of intramolecular dynamics of heteroleptic triple-decker (porphyrinato)(phthalocyaninato) lanthanides. Dalton Trans 2011; 40:11474-9. [DOI: 10.1039/c1dt11231g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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