201
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Pandya SU, Moss KC, Bryce MR, Batsanov AS, Fox MA, Jankus V, Al Attar HA, Monkman AP. Luminescent Platinum(II) Complexes Containing Cyclometallated Diaryl Ketimine Ligands: Synthesis, Photophysical and Computational Properties. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200901159] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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202
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Cationic heteroleptic cyclometalated iridium(III) complexes containing phenyl-triazole and triazole-pyridine clicked ligands. Molecules 2010; 15:2039-59. [PMID: 20336031 PMCID: PMC6257372 DOI: 10.3390/molecules15032039] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 03/08/2010] [Accepted: 03/18/2010] [Indexed: 11/17/2022] Open
Abstract
Novel heteroleptic iridium complexes containing the 1-substituted-4-phenyl-1H-1,2,3-triazole (phtl) cyclometalating ligand have been synthesized. The 3+2 Huisgen dipolar cycloaddition method (‘click’ chemistry) was utilized to prepare a class of bidentate ligands (phtl) bearing different substituents on the triazole moiety. By using various ligands (phtl-R1 and pytl-R2) (R1=adamantane, methyl and R2=adamantane, methyl, β-cyclodextrin, ursodeoxycholic acid), we prepared a small library of new luminescent ionic iridium complexes [Ir(phtr-R1)2(pytl-R2)]Cl and report on their photophysical properties. The flexibility of the clicking approach allows a straightforward control on the chemical-physical properties of the complexes by varying the nature of the substituent on the ligand.
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203
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Czerwieniec R, Hofbeck T, Crespo O, Laguna A, Concepción Gimeno M, Yersin H. The Lowest Excited State of Brightly Emitting Gold(I) Triphosphine Complexes. Inorg Chem 2010; 49:3764-7. [DOI: 10.1021/ic902325n] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rafał Czerwieniec
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Thomas Hofbeck
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Olga Crespo
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Antonio Laguna
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Hartmut Yersin
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
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204
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Steffen A, Tay M, Batsanov A, Howard J, Beeby A, Vuong K, Sun XZ, George M, Marder T. 2,5-Bis(p-R-arylethynyl)rhodacyclopentadienes Show Intense Fluorescence: Denying the Presence of a Heavy Atom. Angew Chem Int Ed Engl 2010; 49:2349-53. [DOI: 10.1002/anie.200905697] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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205
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Steffen A, Tay M, Batsanov A, Howard J, Beeby A, Vuong K, Sun XZ, George M, Marder T. 2,5-Bis(p-R-arylethynyl)rhodacyclopentadienes Show Intense Fluorescence: Denying the Presence of a Heavy Atom. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200905697] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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206
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Che CM, Kwok CC, Lai SW, Rausch AF, Finkenzeller WJ, Zhu N, Yersin H. Photophysical properties and OLED applications of phosphorescent platinum(II) Schiff base complexes. Chemistry 2010; 16:233-47. [PMID: 20013963 DOI: 10.1002/chem.200902183] [Citation(s) in RCA: 245] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The syntheses, crystal structures, and detailed investigations of the photophysical properties of phosphorescent platinum(II) Schiff base complexes are presented. All of these complexes exhibit intense absorption bands with lambda(max) in the range 417-546 nm, which are assigned to states of metal-to-ligand charge-transfer ((1)MLCT) (1)[Pt(5d)-->pi*(Schiff base)] character mixed with (1)[lone pair(phenoxide)-->pi*(imine)] charge-transfer character. The platinum(II) Schiff base complexes are thermally stable, with decomposition temperatures up to 495 degrees C, and show emission lambda(max) at 541-649 nm in acetonitrile, with emission quantum yields up to 0.27. Measurements of the emission decay times in the temperature range from 130 to 1.5 K give total zero-field splitting parameters of the emitting triplet state of 14-28 cm(-1). High-performance yellow to red organic light-emitting devices (OLEDs) using these platinum(II) Schiff base complexes have been fabricated with the best efficiency up to 31 cd A(-1) and a device lifetime up to 77 000 h at 500 cd m(-2).
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Affiliation(s)
- Chi-Ming Che
- Department of Chemistry and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong SAR China.
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207
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Manbeck GF, Brennessel WW, Evans CM, Eisenberg R. Tetranuclear Copper(I) Iodide Complexes of Chelating Bis(1-benzyl-1H-1,2,3-triazole) Ligands: Structural Characterization and Solid State Photoluminescence. Inorg Chem 2010; 49:2834-43. [DOI: 10.1021/ic902236n] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gerald F. Manbeck
- Department of Chemistry, University of Rochester, Rochester, New York 14627
| | | | | | - Richard Eisenberg
- Department of Chemistry, University of Rochester, Rochester, New York 14627
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208
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Fischer T, Czerwieniec R, Hofbeck T, Osminina MM, Yersin H. Triplet state properties of a red light emitting [Pt(s-thpy)(acac)] compound. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2009.12.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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209
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Organometallic Pt(II) and Ir(III) Triplet Emitters for OLED Applications and the Role of Spin–Orbit Coupling: A Study Based on High-Resolution Optical Spectroscopy. TOP ORGANOMETAL CHEM 2010. [DOI: 10.1007/3418_2009_6] [Citation(s) in RCA: 192] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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210
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Wu W, Wu W, Ji S, Guo H, Song P, Han K, Chi L, Shao J, Zhao J. Tuning the emission properties of cyclometalated platinum(II) complexes by intramolecular electron-sink/arylethynylated ligands and its application for enhanced luminescent oxygen sensing. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01794a] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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211
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Rausch AF, Yersin H. Magnetic field effects on the phosphorescence of Pt(4,6-dFppy)(acac) – Tunability of the vibrational satellite structure. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2009.11.049] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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212
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Jacko AC, McKenzie RH, Powell BJ. Models of organometallic complexes for optoelectronic applications. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01786h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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213
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Zhou G, Wang Q, Wang X, Ho CL, Wong WY, Ma D, Wang L, Lin Z. Metallophosphors of platinum with distinct main-group elements: a versatile approach towards color tuning and white-light emission with superior efficiency/color quality/brightness trade-offs. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01159b] [Citation(s) in RCA: 200] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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214
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Lotito KJ, Peters JC. Efficient luminescence from easily prepared three-coordinate copper(i) arylamidophosphines. Chem Commun (Camb) 2010; 46:3690-2. [DOI: 10.1039/c000818d] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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215
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Katkova MA, Ilichev VA, Konev AN, Bochkarev MN. Rare-earth metal 8-hydroxyquinolinate complexes as materials for organic light-emitting diodes. Russ Chem Bull 2009. [DOI: 10.1007/s11172-008-0321-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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216
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Hanss D, Freys JC, Bernardinelli G, Wenger OS. Cyclometalated Iridium(III) Complexes as Photosensitizers for Long-Range Electron Transfer: Occurrence of a Coulomb Barrier. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900673] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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217
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Rausch AF, Murphy L, Williams JAG, Yersin H. Probing the Excited State Properties of the Highly Phosphorescent Pt(dpyb)Cl Compound by High-Resolution Optical Spectroscopy. Inorg Chem 2009; 48:11407-14. [DOI: 10.1021/ic901523u] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andreas F. Rausch
- Universität Regensburg, Institut für Physikalische und Theoretische Chemie, 93053 Regensburg, Germany
| | - Lisa Murphy
- Department of Chemistry, University of Durham, Durham, DH1 3LE, U.K
| | | | - Hartmut Yersin
- Universität Regensburg, Institut für Physikalische und Theoretische Chemie, 93053 Regensburg, Germany
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218
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Feng K, Zuniga C, Zhang YD, Kim D, Barlow S, Marder SR, Brédas JL, Weck M. Norbornene-Based Copolymers Containing Platinum Complexes and Bis(carbazolyl)benzene Groups in Their Side-Chains. Macromolecules 2009. [DOI: 10.1021/ma901280x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Marcus Weck
- Department of Chemistry and Molecular Design Institute, New York University, New York, New York 10003
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219
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Li XN, Wu ZJ, Si ZJ, Zhang HJ, Zhou L, Liu XJ. Injection, Transport, Absorption and Phosphorescence Properties of a Series of Blue-Emitting Ir(III) Emitters in OLEDs: a DFT and Time-Dependent DFT Study. Inorg Chem 2009; 48:7740-9. [DOI: 10.1021/ic900585p] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiao-Na Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- Graduate School of the Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Zhi-Jian Wu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Zhen-Jun Si
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Hong-Jie Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Liang Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- Graduate School of the Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Xiao-Juan Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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220
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221
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Kumar R, Ohulchanskyy TY, Roy I, Gupta SK, Borek C, Thompson ME, Prasad PN. Near-infrared phosphorescent polymeric nanomicelles: efficient optical probes for tumor imaging and detection. ACS APPLIED MATERIALS & INTERFACES 2009; 1:1474-81. [PMID: 20355951 PMCID: PMC3681954 DOI: 10.1021/am9001293] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report a formulation of near-infrared (near-IR) phosphorescent polymeric nanomicelles and their use for in vivo high-contrast optical imaging, targeting, and detection of tumors in small animals. Near-IR phosphorescent molecules of Pt(II)-tetraphenyltetranaphthoporphyrin (Pt(TPNP)) were found to maintain their near-IR phosphorescence properties when encapsulated into phospholipid nanomicelles. The prepared phosphorescent micelles are of approximately 100 nm size and are highly stable in aqueous suspensions. A large spectral separation between the Pt(TPNP) absorption, with a peak at approximately 700 nm, and its phosphorescence emission, with a peak at approximately 900 nm, allows a dramatic decrease in the level of background autofluorescence and scattered excitation light in the near-IR spectral range, where the signal from the phosphorescent probe is observed. In vivo animal imaging with subcutaneously xenografted tumor-bearing mice has resulted in high contrast optical images, indicating highly specific accumulation of the phosphorescent micelles into tumors. Using optical imaging with near-IR phosphorescent nanomicelles, detection of smaller, visually undetectable tumors has also been demonstrated.
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Affiliation(s)
- Rajiv Kumar
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
| | | | - Indrajit Roy
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
| | - Sandesh K. Gupta
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
| | - Carsten Borek
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089
| | - Mark E. Thompson
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089
| | - Paras N. Prasad
- Institute for Lasers, Photonics and Biophotonics, SUNY at Buffalo, Buffalo NY 14226
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222
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Hwang K, Kim H, Lee Y, Lee M, Do Y. Synthesis and Properties of Salen-Aluminum Complexes as a Novel Class of Color-Tunable Luminophores. Chemistry 2009; 15:6478-87. [DOI: 10.1002/chem.200900137] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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223
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Duan HS, Chou PT, Hsu CC, Hung JY, Chi Y. Photophysics of Heteroleptic Iridium(III) Complexes Of Current Interest; a Closer Look on Relaxation Dynamics. Inorg Chem 2009; 48:6501-8. [DOI: 10.1021/ic9003164] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hsin-Sheng Duan
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, R.O.C
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, R.O.C
| | - Cheng-Chih Hsu
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, R.O.C
| | - Jui-Yi Hung
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang Fu Road, Hsinchu 30013, Taiwan, R.O.C
| | - Yun Chi
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang Fu Road, Hsinchu 30013, Taiwan, R.O.C
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224
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Sajoto T, Djurovich PI, Tamayo AB, Oxgaard J, Goddard WA, Thompson ME. Temperature Dependence of Blue Phosphorescent Cyclometalated Ir(III) Complexes. J Am Chem Soc 2009; 131:9813-22. [DOI: 10.1021/ja903317w] [Citation(s) in RCA: 497] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tissa Sajoto
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry, California Institute of Technology, Pasadena, California 91125
| | - Peter I. Djurovich
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry, California Institute of Technology, Pasadena, California 91125
| | - Arnold B. Tamayo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry, California Institute of Technology, Pasadena, California 91125
| | - Jonas Oxgaard
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry, California Institute of Technology, Pasadena, California 91125
| | - William A. Goddard
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry, California Institute of Technology, Pasadena, California 91125
| | - Mark E. Thompson
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry, California Institute of Technology, Pasadena, California 91125
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225
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Cleland DM, Irwin G, Wagner P, Officer DL, Gordon KC. Linker conjugation effects in rhenium(I) bifunctional hole-transport/emitter molecules. Chemistry 2009; 15:3682-90. [PMID: 19266522 DOI: 10.1002/chem.200802373] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Spectroscopic, electrochemical and density functional theory (DFT) methods have been employed to investigate a group of [Re(CO)(3)(HT)(phen)](+) complexes (phen = 1,10-phenanthroline), and in particular the level of electronic communication between various hole-transporting (HT) ligands and the rhenium centre. Here, the HT ligand consists of a coordinating pyridine connected to dimethylaniline group through a single-, double- or triple-bond-connecting system. Electronic absorption, resonance Raman, and steady-state emission spectroscopy combined with lifetime studies and DFT calculations suggest that multiple dpi(Re)-->pi*(phen) metal-to-ligand charge transfers (MLCTs) exist for each complex, two of which significantly absorb at about 340 and 385 nm, and one that emits at approximately 540 nm. In the complexes containing more-conjugated HT ligands, non-emissive intraligand transitions (IL(HT)) exist with energies between the ground and MLCT excited states. The overlap of these IL(HT) transitions and the absorbing MLCT of lowest energy deactivates emission resulting from about 385 nm excitation, and lowers the quantum yield and excited-state lifetimes of these complexes. Cyclic voltammetry experiments indicate that throughout the series investigated, the highest occupied molecular orbital (HOMO) of each complex is centred on the HT ligand, while the occupied molecular orbitals localised on the rhenium are lower in energy.
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Affiliation(s)
- Deidre M Cleland
- Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, Union Place, PO Box 56, Dunedin, New Zealand
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226
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Four-coordinate boron compounds derived from 2-(2-pyridyl)phenol ligand as novel hole-blocking materials for phosphorescent OLEDs. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.01.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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227
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Rausch AF, Thompson ME, Yersin H. Blue Light Emitting Ir(III) Compounds for OLEDs - New Insights into Ancillary Ligand Effects on the Emitting Triplet State. J Phys Chem A 2009; 113:5927-32. [DOI: 10.1021/jp902261c] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas F. Rausch
- Universität Regensburg, Institut für Physikalische und Theoretische Chemie, 93053 Regensburg, Germany
- University of Southern California, Department of Chemistry, Los Angeles, California 90089
| | - Mark E. Thompson
- Universität Regensburg, Institut für Physikalische und Theoretische Chemie, 93053 Regensburg, Germany
- University of Southern California, Department of Chemistry, Los Angeles, California 90089
| | - Hartmut Yersin
- Universität Regensburg, Institut für Physikalische und Theoretische Chemie, 93053 Regensburg, Germany
- University of Southern California, Department of Chemistry, Los Angeles, California 90089
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228
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Kozhevnikov DN, Kozhevnikov VN, Ustinova MM, Santoro A, Bruce DW, Koenig B, Czerwieniec R, Fischer T, Zabel M, Yersin H. Synthesis of Cyclometallated Platinum Complexes with Substituted Thienylpyridines and Detailed Characterization of Their Luminescence Properties. Inorg Chem 2009; 48:4179-89. [DOI: 10.1021/ic802401j] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitry N. Kozhevnikov
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Valery N. Kozhevnikov
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Maria M. Ustinova
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Amedeo Santoro
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Duncan W. Bruce
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Burkhard Koenig
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Rafał Czerwieniec
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Tobias Fischer
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Manfred Zabel
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Hartmut Yersin
- Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg, 620219, Russia, Ural State Technical University, Mira 19, Ekaterinburg, 620002, Russia, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Institute of Organic Chemistry and Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
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229
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Rawashdeh-Omary MA, López-de-Luzuriaga JM, Rashdan MD, Elbjeirami O, Monge M, Rodríguez-Castillo M, Laguna A. Golden Metallopolymers with an Active T1 State via Coordination of Poly(4-vinyl)pyridine to Pentahalophenyl-Gold(I) Precursors. J Am Chem Soc 2009; 131:3824-5. [DOI: 10.1021/ja809585n] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Manal A. Rawashdeh-Omary
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - José M. López-de-Luzuriaga
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Maher D. Rashdan
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Oussama Elbjeirami
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel Monge
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - María Rodríguez-Castillo
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Antonio Laguna
- Department of Chemistry and Physics, Texas Woman’s University, Denton, Texas 76204, Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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230
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Ho CL, Wang Q, Lam CS, Wong WY, Ma D, Wang L, Gao ZQ, Chen CH, Cheah KW, Lin Z. Phosphorescence Color Tuning by Ligand, and Substituent Effects of Multifunctional Iridium(III) Cyclometalates with 9-Arylcarbazole Moieties. Chem Asian J 2009; 4:89-103. [DOI: 10.1002/asia.200800226] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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231
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Zhou G, Wang Q, Ho CL, Wong WY, Ma D, Wang L. Duplicating “sunlight” from simple WOLEDs for lighting applications. Chem Commun (Camb) 2009:3574-6. [DOI: 10.1039/b904382a] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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232
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Lee KR, Eum MS, Chin CS, Lee SC, Kim IJ, Kim YS, Kim Y, Kim SJ, Hur NH. New heteroleptic iridium complexes having one biphenyl-2,2′-diyl and two bipyridyl based ligands. Dalton Trans 2009:3650-2. [DOI: 10.1039/b904016c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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233
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Mei J, Ogawa K, Kim YG, Heston NC, Arenas DJ, Nasrollahi Z, McCarley TD, Tanner DB, Reynolds JR, Schanze KS. Low-band-gap platinum acetylide polymers as active materials for organic solar cells. ACS APPLIED MATERIALS & INTERFACES 2009; 1:150-161. [PMID: 20355767 DOI: 10.1021/am800104k] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report on two pairs of platinum acetylide based polymers and model oligomers utilizing a 2,1,3-benzothiadiazole (BTD) acceptor moiety flanked on either side by either 2,5-thienyl donor units (Pt2BTD-Th and p-PtBTD-Th) or (3,4-ethylenedioxy)-2,5-thienyl donors (Pt2BTD-EDOT and p-PtBTD-EDOT). Both oligomer/polymer pairs absorb strongly throughout the visible region; however, because the (ethylenedioxy)thiophene moiety is a stronger donor than thiophene, the latter oligomer/polymer pair has a correspondingly lower band gap and, therefore, harvests light more efficiently at longer wavelengths. p-PtBTD-Th exhibits a relatively narrow molecular weight distribution with a number-average molecular weight (Mn) of 22 kDa, while p-PtBTD-EDOT exhibits a comparable Mn of 33 kDa but has a high polydispersity index likely due to aggregation. We provide a complete report of the photophysical and electrochemical characterization of the two oligomer/polymer pairs. The photophysical studies reveal that the materials undergo relatively efficient intersystem crossing. In a discussion of the energetics of photoinduced electron transfer from the platinum polymers to [6,6]-phenyl C61 butyric acid methyl ester (PCBM), it is noted that while the singlet state is quenched efficiently, the triplet state is not quenched, indicating that charge generation in the photovoltaic materials must ensue from the singlet manifold. Finally, organic photovoltaic devices based on blends of p-PtBDT-Th or p-PtBDT-EDOT with PCBM were characterized under monochromatic and simulated solar (AM1.5) illumination. Optimized devices exhibit an open-circuit voltage (Voc) of approximately 0.5 V, a short-circuit current density (Isc) of approximately 7.2 mA cm(-2), and a fill factor of approximately 35%, which yields overall power conversion efficiencies of 1.1-1.4%.
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Affiliation(s)
- Jianguo Mei
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, USA
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234
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Rausch AF, Thompson ME, Yersin H. Triplet state relaxation processes of the OLED emitter Pt(4,6-dFppy)(acac). Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2008.11.075] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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235
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You Y, Park SY. Phosphorescent iridium(iii) complexes: toward high phosphorescence quantum efficiency through ligand control. Dalton Trans 2009:1267-82. [DOI: 10.1039/b812281d] [Citation(s) in RCA: 575] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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236
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Zhou GJ, Wang Q, Wong WY, Ma D, Wang L, Lin Z. A versatile color tuning strategy for iridium(III) and platinum(II) electrophosphors by shifting the charge-transfer states with an electron-deficient core. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b814507e] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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237
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Geiß B, Lambert C. A small cationic donor–acceptor iridium complex with a long-lived charge-separated state. Chem Commun (Camb) 2009:1670-2. [DOI: 10.1039/b820744e] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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238
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Wong WY, Ho CL. Functional metallophosphors for effective charge carrier injection/transport: new robust OLED materials with emerging applications. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b819943d] [Citation(s) in RCA: 484] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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239
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Chen HC, Hung CY, Wang KH, Chen HL, Fann WS, Chien FC, Chen P, Chow TJ, Hsu CP, Sun SS. White-light emission from an upconverted emission with an organic triplet sensitizer. Chem Commun (Camb) 2009:4064-6. [DOI: 10.1039/b905572j] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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240
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Lau JSY, Lee PK, Tsang KHK, Ng CHC, Lam YW, Cheng SH, Lo KKW. Luminescent Cyclometalated Iridium(III) Polypyridine Indole Complexes—Synthesis, Photophysics, Electrochemistry, Protein-Binding Properties, Cytotoxicity, and Cellular Uptake. Inorg Chem 2008; 48:708-18. [DOI: 10.1021/ic801818x] [Citation(s) in RCA: 150] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jason Shing-Yip Lau
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Pui-Kei Lee
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Keith Hing-Kit Tsang
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Cyrus Ho-Cheong Ng
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Yun-Wah Lam
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Shuk-Han Cheng
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Kenneth Kam-Wing Lo
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
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241
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Lundin N, Walsh P, Howell S, Blackman A, Gordon K. A Synthetic, Structural, Spectroscopic and DFT study of ReI, CuI, RuII and IrIII Complexes Containing Functionalised Dipyrido[3,2-a:2′,3′-c]phenazine (dppz). Chemistry 2008; 14:11573-83. [DOI: 10.1002/chem.200801369] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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242
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Aslanidis P, Cox PJ, Kapetangiannis K, Tsipis AC. Structural and Spectroscopic Properties of New Copper(I) Complexes with 1,1,1-Tris(diphenylphosphanylmethyl)ethane and Heterocyclic Thiolates. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800691] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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243
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Zhao Q, Li F, Liu S, Yu M, Liu Z, Yi T, Huang C. Highly Selective Phosphorescent Chemosensor for Fluoride Based on an Iridium(III) Complex Containing Arylborane Units. Inorg Chem 2008; 47:9256-64. [DOI: 10.1021/ic800500c] [Citation(s) in RCA: 206] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiang Zhao
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
| | - Fuyou Li
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
| | - Shujuan Liu
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
| | - Mengxiao Yu
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
| | - Zhiqiang Liu
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
| | - Tao Yi
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
| | - Chunhui Huang
- Department of Chemistry & Laboratory of Advanced Materials, Fudan University, Shanghai 200433, Peopleʼs Republic of China, and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210003, Peopleʼs Republic of China
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244
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Evans RC, Douglas P, Winscom CJ. Photophysics and Electrochemistry of some Thione Far-Red/Near-IR Triplet Emitters. J Fluoresc 2008; 19:169-77. [DOI: 10.1007/s10895-008-0399-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2008] [Accepted: 07/02/2008] [Indexed: 11/28/2022]
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245
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Kappaun S, Slugovc C, List EJW. Phosphorescent organic light-emitting devices: working principle and iridium based emitter materials. Int J Mol Sci 2008; 9:1527-1547. [PMID: 19325819 PMCID: PMC2635741 DOI: 10.3390/ijms9081527] [Citation(s) in RCA: 147] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Revised: 08/01/2008] [Accepted: 08/01/2008] [Indexed: 11/30/2022] Open
Abstract
Even though organic light-emitting device (OLED) technology has evolved to a point where it is now an important competitor to liquid crystal displays (LCDs), further scientific efforts devoted to the design, engineering and fabrication of OLEDs are required for complete commercialization of this technology. Along these lines, the present work reviews the essentials of OLED technology putting special focus on the general working principle of single and multilayer OLEDs, fluorescent and phosphorescent emitter materials as well as transfer processes in host materials doped with phosphorescent dyes. Moreover, as a prototypical example of phosphorescent emitter materials, a brief discussion of homo- and heteroleptic iridium(III) complexes is enclosed concentrating on their synthesis, photophysical properties and approaches for realizing iridium based phosphorescent polymers.
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Affiliation(s)
- Stefan Kappaun
- NanoTecCenter Weiz Forschungsgesellschaft mbH, Franz-Pichler-Straße 32, 8160 Weiz, Austria
- Authors to whom correspondence should be addressed; E-Mails:
;
| | - Christian Slugovc
- Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 16, 8010 Graz, Austria
| | - Emil J. W. List
- NanoTecCenter Weiz Forschungsgesellschaft mbH, Franz-Pichler-Straße 32, 8160 Weiz, Austria
- Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
- Authors to whom correspondence should be addressed; E-Mails:
;
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246
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Cannizzo A, Blanco-Rodríguez AM, El Nahhas A, Sebera J, Zális S, Vlcek A, Chergui M. Femtosecond fluorescence and intersystem crossing in rhenium(I) carbonyl-bipyridine complexes. J Am Chem Soc 2008; 130:8967-74. [PMID: 18570416 DOI: 10.1021/ja710763w] [Citation(s) in RCA: 231] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ultrafast electronic-vibrational relaxation upon excitation of the singlet charge-transfer b (1)A' state of [Re(L)(CO) 3(bpy)] ( n ) (L = Cl, Br, I, n = 0; L = 4-Et-pyridine, n = 1+) in acetonitrile was investigated using the femtosecond fluorescence up-conversion technique with polychromatic detection. In addition, energies, characters, and molecular structures of the emitting states were calculated by TD-DFT. The luminescence is characterized by a broad fluorescence band at very short times, and evolves to the steady-state phosphorescence spectrum from the a (3)A" state at longer times. The analysis of the data allows us to identify three spectral components. The first two are characterized by decay times tau 1 = 85-150 fs and tau 2 = 340-1200 fs, depending on L, and are identified as fluorescence from the initially excited singlet state and phosphorescence from a higher triplet state (b (3)A"), respectively. The third component corresponds to the long-lived phosphorescence from the lowest a (3)A" state. In addition, it is found that the fluorescence decay time (tau 1) corresponds to the intersystem crossing (ISC) time to the two emissive triplet states. tau 2 corresponds to internal conversion among triplet states. DFT results show that ISC involves electron exchange in orthogonal, largely Re-localized, molecular orbitals, whereby the total electron momentum is conserved. Surprisingly, the measured ISC rates scale inversely with the spin-orbit coupling constant of the ligand L, but we find a clear correlation between the ISC times and the vibrational periods of the Re-L mode, suggesting that the latter may mediate the ISC in a strongly nonadiabatic regime.
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Affiliation(s)
- Andrea Cannizzo
- Laboratoire de Spectroscopie Ultrarapide, ISIC, FSB-BSP, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne-Dorigny, Switzerland
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247
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Song YH, Chiu YC, Chi Y, Cheng YM, Lai CH, Chou PT, Wong KT, Tsai MH, Wu CC. Phosphorescent Iridium(III) Complexes with Nonconjugated Cyclometalated Ligands. Chemistry 2008; 14:5423-34. [DOI: 10.1002/chem.200800050] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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248
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Lo KKW, Lee PK, Lau JSY. Synthesis, Characterization, and Properties of Luminescent Organoiridium(III) Polypyridine Complexes Appended with an Alkyl Chain and Their Interactions with Lipid Bilayers, Surfactants, and Living Cells. Organometallics 2008. [DOI: 10.1021/om800212t] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kenneth Kam-Wing Lo
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Pui-Kei Lee
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
| | - Jason Shing-Yip Lau
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People’s Republic of China
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249
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Bronstein HA, Finlayson CE, Kirov KR, Friend RH, Williams CK. Investigation into the Phosphorescence of a Series of Regioisomeric Iridium(III) Complexes. Organometallics 2008. [DOI: 10.1021/om800014e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hugo A. Bronstein
- Department of Chemistry, Imperial College London, London, SW7 2AZ, U.K., and Optoelectronics Group, Cavendish Laboratory, Cambridge University, JJ Thompson Avenue, Cambridge CB3 0HE, U.K
| | - Chris E. Finlayson
- Department of Chemistry, Imperial College London, London, SW7 2AZ, U.K., and Optoelectronics Group, Cavendish Laboratory, Cambridge University, JJ Thompson Avenue, Cambridge CB3 0HE, U.K
| | - Kiril R. Kirov
- Department of Chemistry, Imperial College London, London, SW7 2AZ, U.K., and Optoelectronics Group, Cavendish Laboratory, Cambridge University, JJ Thompson Avenue, Cambridge CB3 0HE, U.K
| | - Richard H. Friend
- Department of Chemistry, Imperial College London, London, SW7 2AZ, U.K., and Optoelectronics Group, Cavendish Laboratory, Cambridge University, JJ Thompson Avenue, Cambridge CB3 0HE, U.K
| | - Charlotte K. Williams
- Department of Chemistry, Imperial College London, London, SW7 2AZ, U.K., and Optoelectronics Group, Cavendish Laboratory, Cambridge University, JJ Thompson Avenue, Cambridge CB3 0HE, U.K
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250
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Chang CF, Cheng YM, Chi Y, Chiu YC, Lin CC, Lee GH, Chou PT, Chen CC, Chang CH, Wu CC. Highly Efficient Blue-Emitting Iridium(III) Carbene Complexes and Phosphorescent OLEDs. Angew Chem Int Ed Engl 2008; 47:4542-5. [DOI: 10.1002/anie.200800748] [Citation(s) in RCA: 361] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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