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Moss A, Jang Y, Arvidson J, Wang H, D'Souza F. Highly Coupled Heterobicycle-Fused Porphyrin Dimers: Excitonic Coupling and Charge Separation with Coordinated Fullerene, C 60. CHEMSUSCHEM 2023; 16:e202202289. [PMID: 36655889 DOI: 10.1002/cssc.202202289] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Porphyrin dimers have been widely explored and studied owing to their importance in photosynthetic systems. A vast variety of dimers linked by different groups and at different angles have been synthesized and studied; however, the means by which to synthesize rigidly fused porphyrins with direct conjugation of the chromophores remains limited. Such a class of porphyrins may possess interesting properties that unconjugated or stacked dimers may not exhibit. In this study, bisbenzimidazole-fused porphyrin dimers and their mono- and bis-zinc derivatives are synthesized and characterized. As a consequence of excitonic coupling, these dimers exhibit a split Soret band irrespective of the metal ion in the porphyrin cavity. Steady-state fluorescence and excitation spectra followed by femtosecond transient absorption spectral studies of the heterometallated dimer, (free-base and zinc porphyrin) reveals the occurrence of efficient singlet-singlet energy transfer (>95 % efficiency and rate constant >1012 s-1 ) within the dyad. Further, donor-acceptor conjugates were formed by metal-ligand axial coordination of phenyl imidazole functionalized C60 and were characterized by a variety of physicochemical techniques. Excited state charge separation from both singlet and triplet excited states of ZnP in the conjugates has been established. The lifetime of the final charge-separated state was in the 30-40 μs range revealing charge stabilization. Interestingly, no charge separation in the conjugate derived from the heterometallated dimer was observed wherein excitation transfer dominated the process. The present study brings out the importance of the rigid π-spacer connecting porphyrin dimers in governing the energy and electron transfer events when coupled with an electron acceptor.
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Affiliation(s)
- Austen Moss
- Department of Chemistry, University of North Texas, Denton, TX, 76203, USA
| | - Youngwoo Jang
- Department of Chemistry, University of North Texas, Denton, TX, 76203, USA
| | - Jacob Arvidson
- Department of Chemistry, University of North Texas, Denton, TX, 76203, USA
| | - Hong Wang
- Department of Chemistry, University of North Texas, Denton, TX, 76203, USA
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, Denton, TX, 76203, USA
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2
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Wang YS, Li H, Bai S, Wang YY, Han YF. N-Heterocyclic carbene-stabilized platinum nanoparticles within a porphyrinic nanocage for selective photooxidation. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1504-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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3
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Muranaka A, Ban H, Naito M, Miyagawa S, Ueda M, Yamamoto S, Harada M, Takaya H, Kimura M, Kobayashi N, Uchiyama M, Tokunaga Y. Naked-Eye-Detectable Supramolecular Sensing System for Glutaric Acid and Isophthalic Acid. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Atsuya Muranaka
- Molecular Structure Characterization Unit, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198 Japan
| | - Hayato Ban
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
| | - Masaya Naito
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
| | - Masahiro Ueda
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
| | - Shin Yamamoto
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
| | - Mei Harada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 Japan
| | - Hikaru Takaya
- Department of Life Science, Faculty of Life & Environmental Sciences, Teikyo University of Science, Main Buld #15-05, 2-2-1 Senjyusakuragi, Adachi-ku, Tokyo 120-0045 Japan
- Division of Photo-Molecular Science, Institute for Molecular Science, Myodaiji, Okazaki, Aichi, 444-8585 Japan
| | - Masaki Kimura
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
| | - Nagao Kobayashi
- Faculty of Textile Science and Technology, Shinshu University, Tokida, Ueda, Nagano 386-8567 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507 Japan
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Poyac L, Rose C, Wahiduzzaman M, Lebrun A, Cazals G, Devillers CH, Yot PG, Clément S, Richeter S. Synthesis, Characterization, and Encapsulation Properties of Rigid and Flexible Porphyrin Cages Assembled from N-Heterocyclic Carbene-Metal Bonds. Inorg Chem 2021; 60:19009-19021. [PMID: 34878781 DOI: 10.1021/acs.inorgchem.1c02868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Four porphyrins equipped with imidazolium rings on the para positions of their meso aryl groups were prepared and used as tetrakis(N-heterocyclic carbene) (NHC) precursors for the synthesis of porphyrin cages assembled from eight NHC-M bonds (M = Ag+ or Au+). The conformation of the obtained porphyrin cages in solution and their encapsulation properties strongly depend on the structure of the spacer -(CH2)n- (n = 0 or 1) between meso aryl groups and peripheral NHC ligands. In the absence of methylene groups (n = 0), porphyrin cages are rather rigid and the short porphyrin-porphyrin distance prevents the encapsulation of guest molecules like 1,4-diazabicyclo[2.2.2]octane (DABCO). By contrast, the presence of methylene functions (n = 1) between meso aryl groups and peripheral NHCs offers additional flexibility to the system, allowing the inner space between the two porphyrins to expand enough to encapsulate guest molecules like water molecules or DABCO. The peripheral NHC-wingtip groups also play a significant role in the encapsulation properties of the porphyrin cages.
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Affiliation(s)
- Ludivine Poyac
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34293, France
| | - Clémence Rose
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34293, France
| | | | | | | | - Charles H Devillers
- ICMUB UMR6302, CNRS, Univ. Bourgogne Franche-Comté, 9 avenue Alain Savary, Dijon 21078, France
| | - Pascal G Yot
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34293, France
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Bayard BJ, Zarrabi N, Seetharaman S, Karr P, van der Est A, D'Souza F, Poddutoori PK. Photoinduced energy and electron transfer in a cofacial aluminum(III) porphyrin – Phosphorus(V) porphyrin heterodimer. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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6
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Strategies for the construction of supramolecular assemblies from poly-NHC ligand precursors. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9937-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Longevial J, Rose C, Poyac L, Clément S, Richeter S. Molecular Systems Combining Porphyrinoids and N‐Heterocyclic Carbenes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Clémence Rose
- ICGM Univ. Montpellier CNRS ENSCM 34000 Montpellier France
| | - Ludivine Poyac
- ICGM Univ. Montpellier CNRS ENSCM 34000 Montpellier France
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Zarrabi N, Bayard BJ, Seetharaman S, Holzer N, Karr P, Ciuti S, Barbon A, Di Valentin M, van der Est A, D'Souza F, Poddutoori PK. A charge transfer state induced by strong exciton coupling in a cofacial μ-oxo-bridged porphyrin heterodimer. Phys Chem Chem Phys 2021; 23:960-970. [PMID: 33367389 DOI: 10.1039/d0cp05783e] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photosensitizers with high energy, long lasting charge-transfer states are important components in systems designed for solar energy conversion by multistep electron transfer. Here, we show that in a push-pull type, μ-oxo-bridged porphyrin heterodimer composed of octaethylporphyrinatoaluminum(iii) and octaethylporphyrinatophosphorus(v), the strong excitonic coupling between the porphyrins and the different electron withdrawing abilities of Al(iii) and P(v) promote the formation of a high energy CT state. Using, an array of optical and magnetic resonance spectroscopic methods along with theoretical calculations, we demonstrate photodynamics of the heterodimer that involves the initial formation of a singlet CT which relaxes to a triplet CT state with a lifetime of ∼130 ps. The high-energy triplet CT state (3CT = 1.68 eV) lasts for nearly 105 μs prior to relaxing to the ground state.
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Affiliation(s)
- Niloofar Zarrabi
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, 1039 University Drive, Duluth, Minnesota 55812, USA.
| | - Brandon J Bayard
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, 1039 University Drive, Duluth, Minnesota 55812, USA.
| | - Sairaman Seetharaman
- Department of Chemistry, University of North Texas, 1155 Union Circle, # 305070, Denton, Texas 76203-5017, USA.
| | - Noah Holzer
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, 1039 University Drive, Duluth, Minnesota 55812, USA.
| | - Paul Karr
- Department of Physical Sciences and Mathematics, Wayne State College, 111 Main Street, Wayne, Nebraska 68787, USA
| | - Susanna Ciuti
- Dipartimento di Scienze Chimiche, Università degli studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Antonio Barbon
- Dipartimento di Scienze Chimiche, Università degli studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Marilena Di Valentin
- Dipartimento di Scienze Chimiche, Università degli studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Art van der Est
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada.
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, # 305070, Denton, Texas 76203-5017, USA.
| | - Prashanth K Poddutoori
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, 1039 University Drive, Duluth, Minnesota 55812, USA.
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Nishad RC, Rit A. Self-Assembly of Benzimidazole-Derived Tris-NHC Ligands and Ag I -Ions to Hexanuclear Organometallic Cages and Their Unusual Transmetalation Chemistry. Chemistry 2021; 27:594-599. [PMID: 33090631 DOI: 10.1002/chem.202003937] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/30/2020] [Indexed: 01/08/2023]
Abstract
Multi-ligand self-assembly to attain the AgI -N-heterocyclic carbene (NHC)-built hexanuclear organometallic cages of composition [Ag6 (3 a,b)4 ](PF6 )6 from the reaction of benzimidazole-derived tris(azolium) salts [H3 -3 a,b](PF6 )3 with Ag2 O was achieved. The molecular structures of the cages were established by X-ray diffraction studies along with NMR and MS analyses. The existence of a single assembly in solution was supported by diffusion-ordered spectroscopy (DOSY) 1 H NMR spectra. Further, transmetalation reactions of these self-assembled complexes, [Ag6 (3 a,b)4 ](PF6 )6 , with CuI /AuI -ions provided various coinage metal-NHC complexes having diverse molecular compositions, which included the first example of a hexanuclear CuI -dodecacarbene complex, [Cu6 (3 b)4 ](PF6 )6 .
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Affiliation(s)
- Rajeev C Nishad
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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Longevial JF, Lo M, Lebrun A, Laurencin D, Clément S, Richeter S. Molecular complexes and main-chain organometallic polymers based on Janus bis(carbenes) fused to metalloporphyrins. Dalton Trans 2020; 49:7005-7014. [PMID: 32186566 DOI: 10.1039/d0dt00594k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Janus bis(N-heterocyclic carbenes) composed of a porphyrin core with two N-heterocyclic carbene (NHC) heads fused to opposite pyrroles were used as bridging ligands for the preparation of metal complexes. We first focused our attention on the synthesis of gold(i) chloride complexes [(NHC)AuCl] and investigated the substitution of the chloride ligand by acetylides to obtain the corresponding [(NHC)AuC[triple bond, length as m-dash]CR] complexes. Polyacetylides were then used to obtain molecular multiporphyrinic systems with porphyrins fused to only one NHC ligand, while main-chain organometallic polymers (MCOPs) were obtained when using Janus porphyrin bis(NHCs). Interestingly, MCOPs incorporating zinc(ii) porphyrins proved to be efficient as heterogeneous photocatalysts for the generation of singlet oxygen upon visible light irradiation.
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Affiliation(s)
- Jean-François Longevial
- ICGM, Univ Montpellier, CNRS, ENSCM, CC 1701, Campus Triolet, Place Eugène Bataillon, Montpellier, France.
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11
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Yamashita K, Kuramochi N, Pham Qui Van H, Furutani K, Ogawa T, Sugiura K. Efficient Synthesis of Arylenedioxy‐Bridged Porphyrin Dimers through Catalyst‐Free Nucleophilic Aromatic Substitution. Chempluschem 2020. [DOI: 10.1002/cplu.201900670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ken‐ichi Yamashita
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Narumi Kuramochi
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
| | - Hang Pham Qui Van
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
| | - Kazuhiro Furutani
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Takuji Ogawa
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Ken‐ichi Sugiura
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
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Guo F, Li S, Hou Y, Xu J, Lin S, Wang X. Metalated carbon nitrides as base catalysts for efficient catalytic hydrolysis of carbonyl sulfide. Chem Commun (Camb) 2019; 55:11259-11262. [PMID: 31475259 DOI: 10.1039/c9cc06246g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of base catalyst was designed and prepared by metalation of carbon nitrides with alkali metal ions. The as-prepared metalated carbon nitride composites showed enhanced basicity and efficient catalytic hydrolysis of carbonyl sulfide. The results of this study demonstrate that the metalation of carbon nitrides holds great promise for base catalysis applications.
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Affiliation(s)
- Fangsong Guo
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, P. R. China.
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