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Rai VK, Nishiura M, Takimoto M, Zhao S, Liu Y, Hou Z. Bis-Cyclometalated Iridium(III) Complexes Bearing Ancillary Guanidinate Ligands. Synthesis, Structure, and Highly Efficient Electroluminescence. Inorg Chem 2011; 51:822-35. [DOI: 10.1021/ic201217a] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Virendra Kumar Rai
- Organometallic Chemistry Laboratory
and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570,
Japan
| | - Masayoshi Nishiura
- Organometallic Chemistry Laboratory
and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Masanori Takimoto
- Organometallic Chemistry Laboratory
and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shanshan Zhao
- State Key Laboratory
of Supramolecular
Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Yu Liu
- State Key Laboratory
of Supramolecular
Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory
and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570,
Japan
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BAI FUQUAN, LIU TAO, ZHOU XIN, ZHANG JIANPO, ZHANG HONGXING. THEORETICAL COMPUTATIONAL STUDIES ON ELECTRONIC STRUCTURES, SPECTROSCOPIC PROPERTIES AND NITROGEN HETEROATOM EFFECT OF A SPECIES OF ASYMMETRICAL DIIMINE LIGAND PLATINUM(II) COMPLEXES. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2011. [DOI: 10.1142/s0219633609004952] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Electronic structures and spectroscopic properties of a series of platinum(II) complexes based on the C-linked asymmetrical diimine ligand (2-pyridyl-pyrazole (1), 2-pyridyl-1,2,4-triazole (2), 2-pyridyl-tetrazole (3), 2-pyrazine-pyrazole (4) have been studied by the time-dependent density functional theory calculations with polarizable continuum model. The ground- and excited-state structures were optimized by the density functional theory and single-excitation configuration interaction methods, respectively. The calculated structures and spectroscopic properties are in agreement with the corresponding experimental data. The results of the spectroscopic investigations revealed that the lowest-energy absorptions have1,3metal-to-ligand charge transfer (MLCT)/1,3single ligand centered charge transfer (ILCT) mixing characters. The highest-occupied molecular orbitals (HOMOs) of 1–4 are composed of Pt ( d yz) and azole, while the lowest-unoccupied molecular orbitals (LUMOs) are mainly localized upon the pyridyl-azolate ligand (70% on the pyridine segment). From 1 to 3, the molecular orbital (MO) energies of HOMO and LUMO are decreased and the HOMO energies are changed more remarkably. This is caused by that the conjugation of the azolate segment of the ligand are enhanced through introducing more N heteroatoms into this segment. As a result of MO energy change, the lowest-energy absorptions are blue-shifted in the order 1 < 2 < 3. With the replacement of pyridyl by pyrazine, the HOMO energy of 4 is comparable to 1, but the LUMO energy is decreased by 0.8 eV, and the lowest-energy absorptions are red-shifted to 2.36 eV. Otherwise, the phosphorescent emissions of these complexes have the 3MLCT/3ILCT characters, and should originate from the lowest-energy absorptions. The emissions of 1–4 are red-shifted in the order 3 < 2 < 1 < 4. The heteroatom effect is suitable for tuning the spectra of this kind of materials.
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Affiliation(s)
- FU-QUAN BAI
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - TAO LIU
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - XIN ZHOU
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - JIAN-PO ZHANG
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - HONG-XING ZHANG
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
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53
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Yang B, Zhang Q, Zhong J, Huang S, Zhang HX. Ab initio and DFT study of luminescent cyclometalated N-heterocyclic carbene organogold(III) complexes. J Mol Model 2011; 18:2543-51. [PMID: 22038458 DOI: 10.1007/s00894-011-1261-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 09/27/2011] [Indexed: 10/15/2022]
Abstract
The structures of versatile N-heterocyclic carbene-containing Au(III) complexes in the ground and low-lying excited states have been optimized at the B3LYP functional and the single-excitation configuration interaction (CIS) method, respectively. The spectral properties are predicted with time-dependent density functional theory (TDDFT). In addition, the charge transport quality has been estimated approximately by the predicted reorganization energy (λ). As revealed from the calculations, the introduction of methyl has a bigger influence on the spectral properties than phenyl. Furthermore, we find that changing the auxiliary ligand could tune the charge transfer properties.
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Affiliation(s)
- Baozhu Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu, People's Republic of China
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54
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Jin L, Zhang JP, Zhang HX, Bai FQ. Theoretical Studies on Structures and Spectroscopic Properties of Highly Efficient Phosphorescent [Ru(terpy)(phen)X]+ Complexes. CHINESE J CHEM PHYS 2011. [DOI: 10.1088/1674-0068/24/04/391-398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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55
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Purgel M, Maliarik M, Glaser J, Platas-Iglesias C, Persson I, Tóth I. Binuclear Pt–Tl Bonded Complex with Square Pyramidal Coordination around Pt: A Combined Multinuclear NMR, EXAFS, UV–Vis, and DFT/TDDFT Study in Dimethylsulfoxide Solution. Inorg Chem 2011; 50:6163-73. [DOI: 10.1021/ic200417q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mihály Purgel
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, Egyetem tér 1, Debrecen H-4010, Hungary
- Research group of Homogeneous Catalysis, MTA-DE, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Mikhail Maliarik
- Outotec (Sweden) AB, Gymnasievägen 14, P.O. Box 745, SE-031 27 Skellefteå, Sweden
| | - Julius Glaser
- Department of Chemistry, The Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Ingmar Persson
- Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Imre Tóth
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, Egyetem tér 1, Debrecen H-4010, Hungary
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56
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57
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Zhang JP, Xia BH, Jin L, Zhang HX. Electronic structures and spectroscopic properties of promising highly efficient red phosphorescent Os(II)(LR)2(PH3)2 complexes: a theoretical exploration. Theor Chem Acc 2010. [DOI: 10.1007/s00214-010-0734-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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58
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Sun L, Bai FQ, Zhao ZX, Yang BZ, Zhang HX. Density functional study on the effect of substituent group for the monomer of donor-acceptor copolymer. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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59
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Wang X, Goeb S, Ji Z, Castellano FN. Excited State Absorption Properties of Pt(II) Terpyridyl Complexes Bearing π-Conjugated Arylacetylides. J Phys Chem B 2010; 114:14440-9. [DOI: 10.1021/jp101528z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xianghuai Wang
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403
| | - Sébastien Goeb
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403
| | - Zhiqiang Ji
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403
| | - Felix N. Castellano
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403
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60
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Wen HM, Wu YH, Fan Y, Zhang LY, Chen CN, Chen ZN. Spectroscopic and Luminescence Studies on Square-Planar Platinum(II) Complexes with Anionic Tridentate 3-Bis(2-pyridylimino)isoindoline Derivatives. Inorg Chem 2010; 49:2210-21. [DOI: 10.1021/ic902019s] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hui-Min Wen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of CAS, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yu-Hui Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of CAS, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yang Fan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of CAS, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Li-Yi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of CAS, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Chang-Neng Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of CAS, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of CAS, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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61
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Mandal S, Paul N, Banerjee P, Mondal TK, Goswami S. 1,4-Alkyl migration associated with simultaneous S–C bond cleavage and N–C bond formation in platinum complexes of 2-aminothioethers. Characterization of intramolecular interligand charge transfer phenomenon. Dalton Trans 2010; 39:2717-26. [DOI: 10.1039/b918336a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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62
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Yang BZ, Zhou X, Liu T, Bai FQ, Zhang HX. Theoretical Studies on Structures and Spectroscopic Properties of Cyclometalated Gold(III) Complexes. J Phys Chem A 2009; 113:9396-403. [DOI: 10.1021/jp810965d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bao-Zhu Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Xin Zhou
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Tao Liu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Fu-Quan Bai
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Hong-Xing Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
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63
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Liu T, Xia BH, Zheng QC, Zhou X, Pan QJ, Zhang HX. DFT/TD-DFT investigation on Ir(III) complexes with N-heterocyclic carbene ligands: geometries, electronic structures, absorption, and phosphorescence properties. J Comput Chem 2009; 31:628-38. [PMID: 19551885 DOI: 10.1002/jcc.21360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Iridium(III) complexes with N-heterocyclic (NHC) ligands including fac-Ir(pmb)(3) (1), mer-Ir(pmb)(3) (2), (pmb)(2)Ir(acac) (3), mer-Ir(pypi)(3) (4), and fac-Ir(pypi)(3) (5) [pmb = 1-phenyl-3H-benzimidazolin-2-ylidene, acac = acetoylacetonate, pypi = 1-phenyl-5H-benzimidazolin-2-ylidene; fac = facial, mer = meridional] were investigated theoretically. The geometry structures of 1-5 in the ground and excited state were optimized with restricted and unrestricted DFT (density functional theory) methods, respectively (LANL2DZ for Ir atom and 6-31G for other atoms). The HOMOs (highest occupied molecular orbitals) of 1-3 are composed of d(Ir) and pi(phenyl), while those of 4 and 5 are contributed by d(Ir) and pi(carbene). The LUMOs (lowest unoccupied molecular orbitals) of 1, 2, 4, and 5 are localized on carbene, but that of 3 is localized on acac. The calculated lowest-lying absorptions with TD-DFT method based on Perdew-Burke-Erzenrhof (PBE) functional of 1 (310 nm), 2 (332 nm), and 3 (347 nm) have ML(carbene)CT/IL(phenyl-->carbene)CT (MLCT = metal-to-ligand charge transfer; ILCT = intraligand charge transfer) transition characters, whereas those of 4 (385 nm) and 5 (389 nm) are assigned to ML(carbene)CT/IL(carbene-->carbene)CT transitions. The phosphorescences calculated by TD-DFT method with PBE0 functional of 1 (386 nm) and 2 (388 nm) originate from (3)ML(carbene)CT/(3)IL(phenyl-->carbene)CT excited states, but those of 4 (575 nm) and 5 (578 nm) come from (3)ML(carbene)CT/(3)IL(carbene-->carbene)CT excited states. The calculated results showed that the carbene and phenyl groups act as two independent chromophores in transition processes. Compared with 1 and 2, the absorptions of 4 and 5 are red-shifted by increasing the effective pi-conjugation groups near the C(carbene) atom. We predicated that (pmb)(2)Ir(acac) is nonemissive, because the LUMO of 3 is contributed by the nonemissive acac ligand.
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Affiliation(s)
- Tao Liu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
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64
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Shi LL, Li T, Zhao SS, Li H, Su Z. The effect of phenyl group on the electronic and phosphorescent properties of cyclometalated analogues of platinum(II) terpyridine complexes: a theoretical study. Theor Chem Acc 2009. [DOI: 10.1007/s00214-009-0573-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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65
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Yang BZ, Zhou X, Liu T, Zhao GJ, Zhang HX. Theoretical studies of the spectroscopic properties of (L)Pt [(1,2-η2)-Ph–(CC)n–Ph] (L=dppp or (PPh3)2, n=1 or 2). Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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66
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Shao P, Li Y, Azenkeng A, Hoffmann MR, Sun W. Influence of Alkoxyl Substituent on 4,6-Diphenyl-2,2′-bipyridine Ligand on Photophysics of Cyclometalated Platinum(II) Complexes: Admixing Intraligand Charge Transfer Character in Low-Lying Excited States. Inorg Chem 2009; 48:2407-19. [DOI: 10.1021/ic801589q] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Pin Shao
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516, Energy and Environmental Research Center, University of North Dakota, Grand Forks, North Dakota 58202-9018, and Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202-9024
| | - Yunjing Li
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516, Energy and Environmental Research Center, University of North Dakota, Grand Forks, North Dakota 58202-9018, and Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202-9024
| | - Alexander Azenkeng
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516, Energy and Environmental Research Center, University of North Dakota, Grand Forks, North Dakota 58202-9018, and Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202-9024
| | - Mark R. Hoffmann
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516, Energy and Environmental Research Center, University of North Dakota, Grand Forks, North Dakota 58202-9018, and Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202-9024
| | - Wenfang Sun
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516, Energy and Environmental Research Center, University of North Dakota, Grand Forks, North Dakota 58202-9018, and Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202-9024
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67
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Kadjane P, Platas-Iglesias C, Ziessel R, Charbonnière LJ. Luminescence properties of heterodinuclear Pt–Eu complexes from unusual nonadentate ligands. Dalton Trans 2009:5688-700. [DOI: 10.1039/b903522b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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68
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Ji Z, Azenkeng A, Hoffmann M, Sun W. Synthesis and photophysics of 4′-R-2,2′;6′,2″-terpyridyl (R = Cl, CN, N(CH3)2) platinum(II) phenylacetylide complexes. Dalton Trans 2009:7725-33. [DOI: 10.1039/b908864d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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69
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70
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Li XN, Wu ZJ, Zhang HJ. Comparative study of electronic structure and optical properties of a series of Pt(II) complexes containing different electron-donating and -withdrawing groups: a DFT study. J PHYS ORG CHEM 2009. [DOI: 10.1002/poc.1591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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71
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Li X, Liu X, Wu Z, Zhang H. DFT/TDDFT Studies on the Electronic Structures and Spectral Properties of Rhenium(I) Pyridinybenzoimidazole Complexes. J Phys Chem A 2008; 112:11190-7. [DOI: 10.1021/jp805758n] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaona Li
- State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xiaojuan Liu
- State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Zhijian Wu
- State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China, and Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
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72
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Eryazici I, Moorefield CN, Newkome GR. Square-planar Pd(II), Pt(II), and Au(III) terpyridine complexes: their syntheses, physical properties, supramolecular constructs, and biomedical activities. Chem Rev 2008; 108:1834-95. [PMID: 18543874 DOI: 10.1021/cr0781059] [Citation(s) in RCA: 488] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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73
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Clark M, Diring S, Retailleau P, McMillin D, Ziessel R. Spectroscopic Properties of Orthometalated Platinum(II) Bipyridine Complexes Containing Various Ethynylaryl Groups. Chemistry 2008; 14:7168-79. [DOI: 10.1002/chem.200701975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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74
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Shao P, Li Y, Sun W. Platinum(II) 2,4-Di(2′-pyridyl)-6-(p-tolyl)-1,3,5-triazine Complexes: Synthesis and Photophysics. Organometallics 2008. [DOI: 10.1021/om701285c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pin Shao
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516
| | - Yunjing Li
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516
| | - Wenfang Sun
- Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105-5516
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75
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Rachford AA, Goeb S, Ziessel R, Castellano FN. Ligand Localized Triplet Excited States in Platinum(II) Bipyridyl and Terpyridyl Peryleneacetylides. Inorg Chem 2008; 47:4348-55. [DOI: 10.1021/ic702454k] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Aaron A. Rachford
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, and Laboratoire de Chimie Moléculaire associé au Centre National de la Recherche Scientifique (LCM-CNRS), Ecole de Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex, France
| | - Sébastien Goeb
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, and Laboratoire de Chimie Moléculaire associé au Centre National de la Recherche Scientifique (LCM-CNRS), Ecole de Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex, France
| | - Raymond Ziessel
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, and Laboratoire de Chimie Moléculaire associé au Centre National de la Recherche Scientifique (LCM-CNRS), Ecole de Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex, France
| | - Felix N. Castellano
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, and Laboratoire de Chimie Moléculaire associé au Centre National de la Recherche Scientifique (LCM-CNRS), Ecole de Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex, France
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76
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Liu T, Zhang HX, Xia BH. Theoretical studies of the electronic structures and optical properties of stable blue-emitting polymer based on 4H-cyclopenta-[def]-phenanthrene. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.02.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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77
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Zhou X, Pan QJ, Li MX, Xia BH, Zhang HX. Theoretical studies on square-planar pincer platinum(II) complex and its SO2 adducts: SO2 detector and potential luminescent probe. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2007.07.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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78
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DFT and TDDFT investigations on the ground and excited states for polynuclear platinum(II) complexes containing the rigid phenylacetylide ligand. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s11426-007-0090-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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79
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Liu T, Zhang HX, Xia BH. Theoretical Studies on Structures and Spectroscopic Properties of a Series of Novel Cationic [trans-(C∧N)2Ir(PH3)2]+ (C∧N = ppy, bzq, ppz, dfppy). J Phys Chem A 2007; 111:8724-30. [PMID: 17696505 DOI: 10.1021/jp072802n] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The geometries, electronic structures, and spectroscopic properties of a series of novel cationic iridium(III) complexes [trans-(C/N)(2)Ir(PH(3))(2)]+ (C/N = 2-phenylpyridine, 1; benzoquinoline, 2; 1-phenylpytazolato, 3; 2-(4,6-difluorophenyl)pyridimato, 4) were investigated theoretically. The ground- and excited-state geometries were optimized at the B3LYP/LANL2DZ and CIS/LANL2DZ levels, respectively. The optimized geometry structural parameters agree well with the corresponding experimental results. The unoccupied molecular orbitals are dominantly localized on the C/N ligand, while the occupied molecular orbitals are composed of Ir atom and C/N ligand. Under the time-dependent density functional theory (TDDFT) level with the polarized continuum model (PCM) model, the absorption and phosphorescence in acetonitrile (MeCN) media were calculated based on the optimized ground- and excited-state geometries, respectively. The calculated results showed that the lowest-lying absorptions at 364 nm (1), 389 nm (2), 317 nm (3), and 344 nm (4) are all attributed to a {[d(yz)(Ir) + pi(C/N)] --> [pi*(C/N)]} transition with metal-to-ligand and intraligand charge transfer (MLCT/ILCT) characters; moreover, the phosphorescence at 460 (1) and 442 nm (4) originates from the 3{[d(yz)(Ir) + pi(C/N)] [pi*(C/N)]} (3)MLCT/(3)ILCT excited state, while that at 505 (2) and 399 nm (3) can be described as originating from different types of (3)MLCT/(3)ILCT excited state (3){[d(xy)(Ir) + pi(C/N)] [pi*(C/N)]}. The calculated results also revealed that the absorption and emission transition character can be altered by adjusting the pi electron-withdrawing groups and, furthermore, suggested that the phosphorescent color can be tuned by changing the pi-conjugation effect of the C/N ligand.
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Affiliation(s)
- Tao Liu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, and College of Chemistry, Jilin University, Changchun 130023, People's Republic of China
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80
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Ziessel R, Diring S, Kadjane P, Charbonnière L, Retailleau P, Philouze C. Highly Efficient Blue Photoexcitation of Europium in a Bimetallic Pt–Eu Complex. Chem Asian J 2007; 2:975-82. [PMID: 17600789 DOI: 10.1002/asia.200700143] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We report the preparation and characterization of dinuclear Pt-Ln complexes constructed from a square-planar Pt(II) core bearing an ethynyl-terpyridine residue connected to platinum by the ethynyl bond. Complexation of the neutral Eu(hfac)3 (hfac = hexafluoroacetylacetonate) fragment to free terpyridine (terpy) gives a stable bimetallic complex (log beta = 6.7). In the crystal structure, the flat Pt[triple bond]terpy core coordinates to Eu(III), which is nonacoordinated with the three nitrogen atoms of the terpy subunit and six oxygen atoms of the three hfac ligands. These atoms form a distorted monocapped square antiprism with a pseudo-C2 symmetry axis passing through the nitrogen atom of the central pyridine ring and the Eu atom. Spectroscopic measurements showed that irradiation with visible light of wavelength up to 460 nm in the 1MLCT state of the Pt subunit resulted in a quantitative energy transfer to the Eu center, which strongly luminesces in the red with an overall luminescence quantum yield of 38%. The energy-transfer process is quantitative and not sensitive to oxygen, and the complexation of Eu to the Pt metallosynthon allows the recovery of the energy lost due to triplet-oxygen quenching of the 3MLCT state observed in the uncomplexed Pt precursor.
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Affiliation(s)
- Raymond Ziessel
- Laboratoire de Chimie Moléculaire, ECPM, UMR 7509, CNRS-Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France.
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81
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Muro ML, Castellano FN. Room temperature photoluminescence from [Pt(4′-CCR-tpy)Cl]+ complexes. Dalton Trans 2007:4659-65. [DOI: 10.1039/b709886c] [Citation(s) in RCA: 19] [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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82
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Adams CJ, Fey N, Parfitt M, Pope SJA, Weinstein JA. Synthesis, structures and properties of a new series of platinum–diimine–dithiolate complexes. Dalton Trans 2007:4446-56. [PMID: 17909656 DOI: 10.1039/b709252k] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new square-planar platinum-diimine-dithiolate compounds [Pt(mesBIAN)SS] have been synthesised {mesBIAN = bis(mesityl)biazanaphthenequinone; SS = 1,2-dithiooxalate (dto) , maleonitriledithiolate (mnt) , 1,2-benzenedithiolate (bdt) , 3,4-toluenedithiolate (tdt) and 1,3-dithia-2-thione-4,5-dithiolate (dmit) }, and the X-ray crystal structures of and determined. Cyclic voltammetry reveals that all the compounds form stable anions, and ESR spectroscopy of these anions shows that the SOMO is based upon the mesBIAN ligand; compounds also show a reversible oxidation wave in their CV. Computational studies reveal that charge-transfer processes from orbitals that are combinations of metal and dithiolate ligand to a mesBIAN pi-based LUMO are responsible for the low energy absorptions seen in the UV/visible spectra of these compounds, and that the reverse process is responsible for the observed room-temperature solution luminescence of [Pt(mesBIAN)Cl(2)] and , and . Compounds and , containing aromatic thiolates, were not found to luminesce under the same conditions. Resonance Raman experiments have shown the origin of band-broadening of the lowest-energy absorption band in the absorption spectra of to be due to vibronic structure within one electronic transition.
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83
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Liu T, Gao JS, Xia BH, Zhou X, Zhang HX. Theoretical studies on the electronic structures and optical properties of the oligomers involving bipyridyl, thiophenyl and ethynyl groups. POLYMER 2007. [DOI: 10.1016/j.polymer.2006.11.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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84
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Seneclauze JB, Retailleau P, Ziessel R. Design and preparation of neutral substituted fluorene- and carbazole-based platinum(ii)–acetylide complexes. NEW J CHEM 2007. [DOI: 10.1039/b702374j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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85
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Liu T, Zhang HX, Shu X, Xia BH. Theoretical studies on structures and spectroscopic properties of a series of novel mixed-ligand Ir(iii) complexes [Ir(Mebib)(ppy)X]. Dalton Trans 2007:1922-8. [PMID: 17702171 DOI: 10.1039/b700407a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The series of novel mixed-ligand iridium(III) complexes Ir(Mebib)(ppy)X (Mebib = bis(N-methylbenzimidazolyl)benzene and ppy = phenylpyridine; X = Cl, 1; X = -C[triple band]CH, 2; X = CN, 3) have been investigated theoretically to explore their electronic structures and spectroscopic properties. The ground and excited state geometries have been fully optimized at the B3LYP/LANL2DZ and CIS/LANL2DZ levels, respectively. The optimized geometry structural parameters agree well with the corresponding experimental results. The HOMO of 1 and 3 are mainly localized on the Ir atom, Mebib, and ppy ligand, but that of 2 has significant X ligand composition. Absorptions and phosphorescences in CH2 Cl2 media have been calculated using the TD-DFT level of theory with the PCM model based on the optimized ground and excited state geometries, respectively. The lowest lying absorptions of 1 and 3 at 444 and 416 nm are attributed to a {[d(yz)(Ir) + pi(Mebib) + pi(ppy)] --> [pi*(Mebib)]} transition with metal-to-ligand, ligand-to-ligand, and intra-ligand charge transfer (MLCT/LLCT/ILCT) character, whereas that of 2 at 458 nm is related to a {[d(yz)(Ir) + pi(Mebib) + pi(ppy) + pi(C[triple band]CH)] --> [pi*(Mebib)]} transition with MLCT/LLCT/ILCT and X ligand-to-ligand charge transfer (XLCT) transition character. The phosphorescence of 1 and 3 at 565 and 543 nm originates from the 3{[dy(yz)(Ir) + pi(Mebib) + pi(ppy)] [pi*(Mebib)]} excited state, while that of 2 at 576 nm originates from the 3{[d(yz)(Ir) + pi(Mebib) + pi(ppy) + pi(C[triple band]CH)] [pi*(Mebib)]} excited state. The calculation results show that the absorption and emission transition character can be changed by altering the pi electron-withdrawing ability of the X ligand and the phosphorescent color can be tuned by adjusting the X ligand.
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Affiliation(s)
- Tao Liu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, PR China
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86
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Pan QJ, Fu HG, Yu HT, Zhang HX. Spectroscopic properties of mono- and binuclear platinum(II) alkynyl complexes with phosphine ligands: A theoretical study. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.03.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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