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Greenberg M, Tulloch KM, Reynoso ME, Knapp JL, Sayem FH, Bartkus DD, Lum RH, LaFratta CN, Tanski JM, Anderson CM. Synthesis, Structure, and Photophysical Properties of Platinum Compounds with Thiophene-Derived Cyclohexyl Diimine Ligands. ACS OMEGA 2023; 8:38587-38596. [PMID: 37867690 PMCID: PMC10586441 DOI: 10.1021/acsomega.3c05567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/21/2023] [Indexed: 10/24/2023]
Abstract
Platinum(II) and platinum(IV) compounds were prepared by the stereoselective and regioselective reactions of thiophene-derived cyclohexyl diimine C^N^N-ligands with [Pt2Me4(μ-SMe2)2]. Newly synthesized ligands were characterized by NMR spectroscopy and elemental analysis, and Pt(II)/Pt(IV) compounds were characterized by NMR spectroscopy, elemental analysis, high-resolution mass spectrometry, and single-crystal X-ray diffraction. UV-vis absorbance and photoluminescence measurements were performed on newly synthesized complexes, as well as structurally related Pt(II)/Pt(IV) compounds with benzene-derived cyclohexyl diimine ligands, in dichloromethane solution, as solids, and as 5% by weight PMMA-doped films. DFT and TD-DFT calculations were performed, and the results were compared with the observed spectroscopic properties of the newly synthesized complexes. X-ray total scattering measurements and real space pair distribution function analysis were performed on the synthesized complexes to examine the local- and intermediate-range atomic structures of the emissive solid states.
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Affiliation(s)
- Matthew
W. Greenberg
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Kris M. Tulloch
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Michelle E. Reynoso
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Juliette L. Knapp
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Farman H. Sayem
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Daphne D. Bartkus
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Ryan H. Lum
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Christopher N. LaFratta
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Joseph M. Tanski
- Department
of Chemistry, Vassar College, Poughkeepsie, New York 12604, United States
| | - Craig M. Anderson
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
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Haque A, Al-Balushi R, Al-Busaidi IJ, Al-Rasbi NK, Al-Bahri S, Al-Suti MK, Khan MS, Abou-Zied OK, Skelton JM, Raithby PR. Two Is Better than One? Investigating the Effect of Incorporating Re(CO) 3Cl Side Chains into Pt(II) Diynes and Polyynes. Inorg Chem 2021; 60:745-759. [PMID: 33382607 DOI: 10.1021/acs.inorgchem.0c02747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pt(II) diynes and polyynes incorporating 5,5'- and 6,6'-disubstituted 2,2'-bipyridines were prepared following conventional Sonogashira and Hagihara dehydrohalogenation reaction protocols. Using Pt(II) dimers and polymers as a rigid-rod backbone, four new heterobimetallic compounds incorporating Re(CO)3Cl as a pendant functionality in the 2,2'-bipyridine core were obtained. The new heterobimetallic Pt-Re compounds were characterized by analytical and spectroscopic techniques. The solid-state structures of a Re(I)-coordinated diterminal alkynyl ligand and a representative model compound were determined by single-crystal X-ray diffraction. Detailed photophysical characterization of the heterobimetallic Pt(II) diynes and polyynes was carried out. We find that the incorporation of the Re(CO)3Cl pendant functionality in the 2,2'-bipyridine-containing main-chain Pt(II) diynes and polyynes has a synergistic effect on the optical properties, red shifting the absorption profile and introducing strong long-wavelength absorptions. The Re(I) moiety also introduces strong emission into the monomeric Pt(II) diyne compounds, whereas this is suppressed in the polyynes. The extent of the synergy depends on the topology of the ligands. Computational modeling was performed to compare the energetic stabilities of the positional isomers and to understand the microscopic nature of the major optical transitions. We find that 5,5'-disubstituted 2,2'-bipyridine systems are better candidates in terms of yield, photophysical properties, and stability than their 6,6'-substituted counterparts. Overall, this work provides an additional synthetic route to control the photophysical properties of metallaynes for a variety of optoelectronic applications.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Kingdom of Saudi Arabia.,Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Rayya Al-Balushi
- Department of Basic Sciences, College of Applied and Health Sciences, A'Sharqiyah University, Ibra 400, Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Nawal K Al-Rasbi
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Sumayya Al-Bahri
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Mohammed K Al-Suti
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Osama K Abou-Zied
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Jonathan M Skelton
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.,Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Paul R Raithby
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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Haque A, Al-Balushi RA, Raithby PR, Khan MS. Recent Advances in π-Conjugated N^C-Chelate Organoboron Materials. Molecules 2020; 25:E2645. [PMID: 32517244 PMCID: PMC7321365 DOI: 10.3390/molecules25112645] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/17/2022] Open
Abstract
Boron-containing π-conjugated materials are archetypical candidates for a variety of molecular scale applications. The incorporation of boron into the π-conjugated frameworks significantly modifies the nature of the parent π-conjugated systems. Several novel boron-bridged π-conjugated materials with intriguing structural, photo-physical and electrochemical properties have been reported over the last few years. In this paper, we review the properties and multi-dimensional applications of the boron-bridged fused-ring π-conjugated systems. We critically highlight the properties of π-conjugated N^C-chelate organoboron materials. This is followed by a discussion on the potential applications of the new materials in opto-electronics (O-E) and other areas. Finally, attempts will be made to predict the future direction/outlook for this class of materials.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry, College of Science, University of Hail, Ha’il 81451, Saudi Arabia
| | - Rayya A. Al-Balushi
- Department of Basic Sciences, College of Applied and Health Sciences, A’Sharqiyah University, P.O. Box 42, Ibra 400, Sultanate of Oman;
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down BA2 7AY, UK
| | - Muhammad S. Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Sultanate of Oman
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Risi G, Becker M, Housecroft CE, Constable EC. Are Alkynyl Spacers in Ancillary Ligands in Heteroleptic Bis(diimine)copper(I) Dyes Beneficial for Dye Performance in Dye-Sensitized Solar Cells? Molecules 2020; 25:E1528. [PMID: 32230862 PMCID: PMC7180879 DOI: 10.3390/molecules25071528] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 03/22/2020] [Accepted: 03/26/2020] [Indexed: 11/16/2022] Open
Abstract
The syntheses of 4,4'-bis(4-dimethylaminophenyl)-6,6'-dimethyl-2,2'-bipyridine (1), 4,4'-bis(4-dimethylaminophenylethynyl)-6,6'-dimethyl-2,2'-bipyridine (2), 4,4'-bis(4-diphenylaminophenyl)-6,6'-dimethyl-2,2'-bipyridine (3), and 4,4'-bis(4-diphenylaminophenylethynyl)-6,6'-dimethyl-2,2'-bipyridine (4) are reported along with the preparations and characterisations of their homoleptic copper(I) complexes [CuL2][PF6] (L = 1-4). The solution absorption spectra of the complexes exhibit ligand-centred absorptions in addition to absorptions in the visible region assigned to a combination of intra-ligand and metal-to-ligand charge-transfer. Heteroleptic [Cu(5)(Lancillary)]+ dyes in which 5 is the anchoring ligand ((6,6'-dimethyl-[2,2'-bipyridine]-4,4'-diyl)bis(4,1-phenylene))bis(phosphonic acid) and Lancillary = 1-4 have been assembled on fluorine-doped tin oxide (FTO)-TiO2 electrodes in dye-sensitized solar cells (DSCs). Performance parameters and external quantum efficiency (EQE) spectra of the DSCs (four fully-masked cells for each dye) reveal that the best performing dyes are [Cu(5)(1)]+ and [Cu(5)(3)]+. The alkynyl spacers are not beneficial, leading to a decrease in the short-circuit current density (JSC), confirmed by lower values of EQEmax. Addition of a co-absorbent (n-decylphosphonic acid) to [Cu(5)(1)]+ lead to no significant enhancement of performance for DSCs sensitized with [Cu(5)(1)]+. Electrochemical impedance spectroscopy (EIS) has been used to investigate the interfaces in DSCs; the analysis shows that more favourable electron injection into TiO2 is observed for sensitizers without the alkynyl spacer and confirms higher JSC values for [Cu(5)(1)]+.
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Affiliation(s)
| | | | | | - Edwin C. Constable
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland; (G.R.); (M.B.); (C.E.H.)
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6
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Synthesis, characterization, and photophysical properties of bismetalated platinum complexes with benzothiophene ligands. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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7
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Nguyen MT, Jones RA, Holliday BJ. Recent advances in the functional applications of conducting metallopolymers. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Haque A, Al-Balushi RA, Al-Busaidi IJ, Khan MS, Raithby PR. Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure-Property Relationships and Applications. Chem Rev 2018; 118:8474-8597. [PMID: 30112905 DOI: 10.1021/acs.chemrev.8b00022] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Conjugated poly-ynes and poly(metalla-ynes) constitute an important class of new materials with potential application in various domains of science. The key factors responsible for the diverse usage of these materials is their intriguing and tunable chemical and photophysical properties. This review highlights fascinating advances made in the field of conjugated organic poly-ynes and poly(metalla-ynes) incorporating group 4-11 metals. This includes several important aspects of conjugated poly-ynes viz. synthetic protocols, bonding, electronic structure, nature of luminescence, structure-property relationships, diverse applications, and concluding remarks. Furthermore, we delineated the future directions and challenges in this particular area of research.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Rayya A Al-Balushi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Paul R Raithby
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , U.K
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Experimental and theoretical characterization of organic salt: 2-((4-bromophenyl)amino) pyrido[1,2- a ] quinoxalin-11-ium bromide monohydrate synthesized via oxidative cyclization. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Haque A, Hsieh MF, Hassan SI, Haque Faizi MS, Saha A, Dege N, Rather JA, Khan MS. Synthesis, characterization, and pharmacological studies of ferrocene-1H-1,2,3-triazole hybrids. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mushtaque M, Avecilla F, Haque A, Perwez A, Khan MS, Rizvi MMA. Experimental and theoretical studies of a pyrazole-thiazolidin-2,4-di-one hybrid. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.100] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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13
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Al-Balushi RA, Haque A, Jayapal M, Al-Suti MK, Husband J, Khan MS, Skelton JM, Molloy KC, Raithby PR. Impact of the Alkyne Substitution Pattern and Metalation on the Photoisomerization of Azobenzene-Based Platinum(II) Diynes and Polyynes. Inorg Chem 2016; 55:10955-10967. [DOI: 10.1021/acs.inorgchem.6b01509] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rayya A. Al-Balushi
- Department
of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Ashanul Haque
- Department
of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Maharaja Jayapal
- Department
of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Mohammed K. Al-Suti
- Department
of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - John Husband
- Department
of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Muhammad S. Khan
- Department
of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Sultanate of Oman
| | - Jonathan M. Skelton
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Kieran C. Molloy
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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Al-Balushi RA, Haque A, Jayapal M, Al-Suti MK, Husband J, Khan MS, Koentjoro OF, Molloy KC, Skelton JM, Raithby PR. Experimental and Theoretical Investigation for the Level of Conjugation in Carbazole-Based Precursors and Their Mono-, Di-, and Polynuclear Pt(II) Complexes. Inorg Chem 2016; 55:6465-80. [DOI: 10.1021/acs.inorgchem.6b00523] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rayya A. Al-Balushi
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Muscat, Sultanate of Oman
| | - Ashanul Haque
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Muscat, Sultanate of Oman
| | - Maharaja Jayapal
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Muscat, Sultanate of Oman
| | - Mohammed K. Al-Suti
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Muscat, Sultanate of Oman
| | - John Husband
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Muscat, Sultanate of Oman
| | - Muhammad S. Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod 123, Muscat, Sultanate of Oman
| | - Olivia F. Koentjoro
- Department of Chemistry, University of Bath, Claverton
Down, Bath, Avon BA2 7AY, United Kingdom
| | - Kieran C. Molloy
- Department of Chemistry, University of Bath, Claverton
Down, Bath, Avon BA2 7AY, United Kingdom
| | - Jonathan M. Skelton
- Department of Chemistry, University of Bath, Claverton
Down, Bath, Avon BA2 7AY, United Kingdom
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton
Down, Bath, Avon BA2 7AY, United Kingdom
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