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Agou T, Kuroiwa S, Fukumoto H, Nabeshima T. Synthesis and optical properties of antimony(V) complexes of a trianionic N 2O 2-type tetradentate dipyrrin ligand. Chem Commun (Camb) 2024; 60:4557-4560. [PMID: 38572576 DOI: 10.1039/d4cc00630e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
LSbCl2, an air- and moisture-stable antimony(V)-dipyrrin complex at room temperature, was obtained by treating an excess amount (20 eq.) of SbCl3 with a trianionic N2O2-type tetradentate dipyrrin ligand (L) under visible-light irradiation and O2 atmosphere. The Cl ligands in LSbCl2 were replaced by OH ligands via hydrolysis, yielding LSb(OH)2. Further, the molecular structures and optical properties of the Sb(V)-dippyrin complexes were investigated. While LSbCl2 was non-fluorescent, LSb(OH)2 exhibited an intense red fluorescence with a photoluminescence quantum yield of 68%.
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Affiliation(s)
- Tomohiro Agou
- Department of Material Science, Graduate School of Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan.
| | - Shunsuke Kuroiwa
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
| | - Hiroki Fukumoto
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
| | - Tatsuya Nabeshima
- Institute of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan.
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Caliskanyürek V, Eulberg S, Lange O, Bröring M, Tschierlei S. Sb(V) dihalide corroles: efficient singlet oxygen photosensitisers. Chem Commun (Camb) 2024; 60:4096-4099. [PMID: 38512705 DOI: 10.1039/d4cc00675e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Sb(V) dihalide corrole complexes, in particular difluoro-5,15-di(4-cyanophenyl)-10-(2,4,5-trimethoxyphenyl)corrolatoantimony(V) (complex 1), show distinct emission properties and efficient intersystem crossing rates. Furthermore, complex 1 is characterised by its extended triplet excited state lifetime and an impressive singlet oxygen quantum yield exceeding 95%. This emphasises its potential for effective photooxidation reactions, positioning it as a leader in Sb(V) complex applications.
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Affiliation(s)
- Volkan Caliskanyürek
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Rebenring 31, 38106, Braunschweig, Germany.
| | - Simon Eulberg
- Institute of Inorganic and Analytical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany.
| | - Oliver Lange
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Rebenring 31, 38106, Braunschweig, Germany.
| | - Martin Bröring
- Institute of Inorganic and Analytical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany.
| | - Stefanie Tschierlei
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Rebenring 31, 38106, Braunschweig, Germany.
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Synthesis, Structure, and UV–Vis Characterization of Antimony(III) Phthalocyanine: [(SbPc)2(Sb2I8)(SbBr3)]2. Molecules 2022; 27:molecules27061839. [PMID: 35335201 PMCID: PMC8950410 DOI: 10.3390/molecules27061839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/01/2022] [Accepted: 03/05/2022] [Indexed: 11/17/2022] Open
Abstract
A new antimony(III)–phthalocyanine complex with the formula of [(SbPc)2(Sb2I8)(SbBr3)]2 has been obtained in the reaction of pure antimony powder with phthalonitrile under the oxidation conditions by iodine monobromide vapors. The complex crystallizes in the centrosymmetric space group of the triclinic system. Both independent (SbPc)+ units exhibit non-planar conformation, since the Sb(III) is larger than the equilibrium cavity size of the ring and cannot be accommodated without its expansion; thus, the metal protrudes out of the cavity, forming a saucer shape. The centrosymmetric anionic unit of the crystal consists of two (Sb2I8)2− interacted anionic units forming (Sb4I16)4− anionic complex that interacts with two SbBr3 molecules to form [Sb6I16Br6]4− anionic aggregate. Each [Sb6I16Br6]4− anionic aggregate is surrounded by four (SbPc)+ cations forming a supramolecular centrosymmetric (SbPc)4[Sb6I16Br6] complex. Translationally related (SbPc)4[Sb6I16Br6] molecules form a stacking structure along the [100] and [011] directions with N4–N4 distances of 3.55 and 3.53 Å, respectively, between the back-to-back-oriented saucer-shaped (SbPc)+ units. The interaction between the building units of the crystal was analyzed using the Hirshfeld surface and the analysis of the 2D fingerprint plots. The UV–Vis absorption spectra of crystal 1 were taken in CH2Cl2 and toluene solutions in the concentration range from 10−5 to 10−6 mol/L. No significant changes related to aggregation in solutions were observed. The Q-band in toluene solution is red shifted by ~15 nm in comparison to that in CH2Cl2 solution. Oxidation of (SbPc)4[Sb6I16Br6] yields SbVPc derivative. Both SbIII and SbV phthalocyanine derivatives absorb near infrared light (600–900 nm), which should be intriguing from the point of view of potential use as photosensitizers for PDT and as an infrared cut filter for plasma display and silicon photodiodes.
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The synthesis, structure, and spectral properties of antimony(III) phthalocyanine obtained under iodine vapor atmosphere: (SbIIIPc)(I3) ½(I2). Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Zhang W, Yu W, Yan Q, Liu Z, Zhang Y. Synthesis of substituted oxazoles via Pd-catalyzed tandem oxidative cyclization. Org Chem Front 2017. [DOI: 10.1039/c7qo00517b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An easy approach to access multisubstituted oxazoles via tandem oxidative cyclization is developed.
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Affiliation(s)
- Wei Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Wenlong Yu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Qiangqiang Yan
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhanxiang Liu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Yuhong Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
- State Key Laboratory of Applied Organic Chemistry
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Zang L, Zhao H, Ji X, Cao W, Zhang Z, Meng P. Photophysical properties, singlet oxygen generation efficiency and cytotoxic effects of aloe emodin as a blue light photosensitizer for photodynamic therapy in dermatological treatment. Photochem Photobiol Sci 2017; 16:1088-1094. [PMID: 28530733 DOI: 10.1039/c6pp00453a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Aloe emodin with anticancer and photosensitising capabilities, excited by blue light, is proposed as a photosensitizer to treat superficial diseases.
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Affiliation(s)
- Lixin Zang
- Condensed Matter Science and Technology Institute
- Harbin Institute of Technology
- Harbin 150080
- China
| | - Huimin Zhao
- School of Physics and Electronics
- Shandong Normal University
- Ji'nan 250014
- China
| | - Xueyu Ji
- Department of Stomatology
- The Fourth Affiliated Hospital of Harbin Medical University
- Harbin 150001
- China
| | - Wenwu Cao
- Condensed Matter Science and Technology Institute
- Harbin Institute of Technology
- Harbin 150080
- China
- Department of Mathematics and Materials Research Institute
| | - Zhiguo Zhang
- Condensed Matter Science and Technology Institute
- Harbin Institute of Technology
- Harbin 150080
- China
| | - Peisong Meng
- Department of Stomatology
- The Fourth Affiliated Hospital of Harbin Medical University
- Harbin 150001
- China
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Isago H, Fujita H, Hirota M, Sugimori T, Kagaya Y. Synthesis, spectral and electrochemical properties of a novel phosphorous(V)-phthalocyanine. J PORPHYR PHTHALOCYA 2013. [DOI: 10.1142/s1088424613500247] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A novel phosphorous(V)-phthalocyanine, [ P ( tppc )( OH )( O )], where tppc denotes tetrakis{(2′,6′-dimethyl)phenoxy}phthalocyaninate, has been synthesized and its spectral properties in non-aqueous and aqueous media have been investigated. This compound has been found free from aggregation in EtOH whereas forms J-aggregates in CH 2 Cl 2 and acetonitrile, suggesting the presence of chemical interaction between the axial ligand and the surrounding solvent molecules. The most intense absorption band (Q-band) appears at 683 nm in EtOH , however, reaction with CF 3 COOH has given rise to a large red shift of the Q-band without lowering of its C 4 symmetry (evidenced by magnetic circular dichroism spectroscopy), indicating protonation at the axial site. Its fluorescence quantum yield has been determined (0.49 in EtOH ) and has been found much higher than those of the known Sb V or As V derivatives by more than one order of magnitude. The first reduction potential has been determined by cyclic voltammetry (-1.09 V vs. ferrocenium+/ferrocene) in CH 2 Cl 2. It is noteworthy that the Q-band maximum wavelength and the first reduction potential values are normal for conventional phthalocyanines despite the presence of pnictogen(V) in the cavity of the macrocyclic ligand.
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Affiliation(s)
- Hiroaki Isago
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba-shi, Ibaraki 305-0047, Japan
| | - Harumi Fujita
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba-shi, Ibaraki 305-0047, Japan
| | - Misako Hirota
- Department of Chemistry, Ochanomizu University, Tokyo, Japan 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Tamotsu Sugimori
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630, Sugitani, Toyama, 930-0194, Japan
| | - Yutaka Kagaya
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba-shi, Ibaraki 305-0047, Japan
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Isago H, Fujita H, Sugimori T. The synthesis and spectral investigation of a novel highly water-soluble, aggregation-free antimony(V)-phthalocyanine absorbing light in optical therapeutical window. J Inorg Biochem 2012; 117:111-7. [DOI: 10.1016/j.jinorgbio.2012.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 08/17/2012] [Accepted: 08/17/2012] [Indexed: 11/28/2022]
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Isago H, Kagaya Y. Synthesis, Spectral, and Electrochemical Characterization of the First Arsenic(V)-Phthalocyanines. Inorg Chem 2012; 51:8447-54. [DOI: 10.1021/ic301002s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroaki Isago
- National Institute for Materials Science,
1-2-1, Sengen,
Tsukuba, Ibaraki, 305-0047, Japan
| | - Yutaka Kagaya
- National Institute for Materials Science,
1-2-1, Sengen,
Tsukuba, Ibaraki, 305-0047, Japan
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Isago H, Kagaya Y, Oyama Y, Fujita H, Sugimori T. The syntheses of amphiphilic antimony(V)-phthalocyanines and spectral investigation on their aggregation behaviors in aqueous and non-aqueous solutions. J Inorg Biochem 2012; 111:91-8. [DOI: 10.1016/j.jinorgbio.2012.02.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/09/2011] [Accepted: 02/24/2012] [Indexed: 10/28/2022]
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Isago H, Kagaya Y. Synthesis and spectral properties of a dihydroxo(phthalocyaninato)antimony(V) complex. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424609000474] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The title complex cation, [ Sb ( pc )( OH )2]+, (pc = phthalocyaninate, C 32 H 16 N 82-) has been prepared by oxidizing [ Sb ( pc )] I 3 with tert-butyl perbenzoate and isolated as hexafluorophosphate and triflate salts. These salts are relatively well-soluble in polar solvents (e.g. CH 2 Cl 2, acetonitrile, acetone) without detectable aggregation. In particular, they dissolve relatively well in ethanol and methanol in which [ Sb ( pc ) Br 2]+ or [ Sb ( pc ) Cl 2]+ salts are poorly soluble whereas they have extremely low solubility in 1-chloronaphthalene and CHCl 3, unlike the bromo or chloro analogs. The spectral properties of [ Sb ( pc )( OH )2]+ have been investigated by optical absorption and magnetic circular dichroism spectroscopy. Although its Q band tends to appear at a longer wavelength in a solvent with a larger refractive index, as is the case for its Br and Cl analogs, the Q band positions in donor solvents deviate considerably from linear correlation between Onsager's solvent polarity function. In the Soret band region, spectra of [ Sb ( pc )( OH )2]+ are different in CH 2 Cl 2 and acetonitrile, particularly around the B1/B2 bands, unlike the bromo and chloro analogs. The solvent dependence of absorption spectra and the difference in solubility suggests that the presence of the axial hydroxyl groups endows the phthalocyanine macrocycle with considerable hydrophilicity. It also suggests that there are some specific chemical interactions between the axial hydroxyl groups and the surrounding donor solvent molecules.
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Affiliation(s)
- Hiroaki Isago
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba-shi, Ibaraki 305-0047, Japan
| | - Yutaka Kagaya
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba-shi, Ibaraki 305-0047, Japan
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Synthesis, photophysical and photochemical properties of octa-substituted antimony phthalocyanines. Polyhedron 2009. [DOI: 10.1016/j.poly.2008.11.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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