1
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Yarnell JE, Chakraborty A, Myahkostupov M, Wright KM, Castellano FN. Long-lived triplet excited state in a platinum(ii) perylene monoimide complex. Dalton Trans 2018; 47:15071-15081. [PMID: 30303214 DOI: 10.1039/c8dt02496k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We report the synthesis and solution based photophysical properties of a new Pt(ii)-terpyridine complex coupled to a perylene monoimide (PMI) chromophoric unit through an acetylene linkage. This structural arrangement resulted in quantitative quenching of the highly fluorescent PMI chromophore by introducing metal character into the lowest energy singlet state, thereby leading to the formation of a long-lived PMI-ligand localized triplet excited state (τ = 8.4 μs). Even though the phosphorescence from this triplet state was not observed, highly efficient quenching of this excited state by dissolved oxygen and the observation of singlet oxygen photoluminescence in the near-IR at 1270 nm initially pointed towards triplet excited state character. Additionally, the coincidence of the excited state absorbance difference spectra from the sensitized PMI ligand using a triplet donor and the Pt-PMI complex provided strong evidence for this triplet state assignment, which was further supported by TD-DFT calculations.
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Affiliation(s)
- James E Yarnell
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, USA.
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2
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Kotturi K, Masson E. Directional Self-Sorting with Cucurbit[8]uril Controlled by Allosteric π-π and Metal-Metal Interactions. Chemistry 2018; 24:8670-8678. [PMID: 29601113 DOI: 10.1002/chem.201800856] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Indexed: 12/14/2022]
Abstract
To maximize Coulombic interactions, cucurbit[8]uril (CB[8]) typically forms ternary complexes that distribute the positive charges of the pair of guests (if any) over both carbonylated portals of the macrocycle. We present here the first exception to this recognition pattern. Platinum(II) acetylides flanked by 4'-substituted terpyridyl ligands (tpy) form 2:1 complexes with CB[8] in an exclusively stacked head-to-head orientation in a water/acetonitrile mixture. The host encapsulates the pair of tpy substituents, and both positive Pt centers sit on top of each other at the same CB[8] rim, leaving the other rim free of any interaction with the guests. This dramatic charge imbalance between the CB[8] rims would be electrostatically penalizing, were it not for allosteric π-π interactions between the stacked tpy ligands, and possible metal-metal interactions between both Pt centers. When both tpy and acetylides are substituted with aryl units, the metal-ligand complexes form 2:2 assemblies with CB[8] in aqueous medium, and the directionality of the assembly (head-to-head or head-to-tail) can be controlled, both kinetically and thermodynamically.
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Affiliation(s)
- Kondalarao Kotturi
- Department of Chemistry and Biochemistry, Ohio University, 181 Clippinger Hall, Athens, Ohio, 45701, USA
| | - Eric Masson
- Department of Chemistry and Biochemistry, Ohio University, 181 Clippinger Hall, Athens, Ohio, 45701, USA
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3
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Li J, Yang L, Zhang G, Jiang J. Tuning Light Absorption in Platinum(II) Terpyridyl π-Conjugated Complexes: A First-Principle Study. J Phys Chem A 2017; 121:5533-5539. [PMID: 28671849 DOI: 10.1021/acs.jpca.7b03301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Platinum(II) terpyridyl complexes with a donor-acceptor (D-A) framework have long been considered as a promising component of dye-sensitized solar cells (DSSCs). To revealing the structure-property relationship of these highly modular systems, we have conducted a first-principle study at the time-dependent density functional theory (TDDFT) level on the [Pt(tBu3tpy)(-C≡C-Ph)n]+ (tBu3tpy is 4,4',4″-tri-tert-butyl-2,2':6',2″-terpyridine) complexes. It was found that their visible absorbance could be improved by elongating the donor chain with n (-C≡C-Ph) units, reaching a maximum at n = 16. It is noteworthy that such a simple concatenating protocol enables a remarkable charge transfer distance as long as 5 nm, implying a promising solution for the bottleneck problem of low charge separation rate in DSSCs. Furthermore, using a A-D-A system (two Pt(tBu3tpy) acceptors bridged by one donor) effectively doubles the visible-harvesting ability, and twisting an benzene ring in the chain of donors to break π-conjugations can tune down light absorption in a quantitatively angular dependent manner. Finally, replacing the C≡C bond linker with C═C double bond in donor leads to comparable light absorption ability while bestowing structural flexibility. These structure-property relationships thus provide efficient knobs for molecular rational design toward high performance dye-sensitized solar cells.
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Affiliation(s)
- Jun Li
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China
| | - Li Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China
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4
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Bi D, Feng Y, Zhao Q, Wang H, Zhu Y, Bao X, Fan H, Yu L, Yang Q, Qiu D. Synthesis, crystal structure, photophysical property and metal ion-binding behavior of a cyclometalated platinum(ii) terpyridylacetylide with efficient π-conjugation degree. RSC Adv 2017. [DOI: 10.1039/c7ra09423j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The “Donor–Phosphore–Receptor” platform as a novel building block for formation of heterotrinuclear transition metal complexes.
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Affiliation(s)
- Dongqin Bi
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Yuquan Feng
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Qian Zhao
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Hongwei Wang
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Yongsheng Zhu
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Xiaoyu Bao
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Huitao Fan
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Lintao Yu
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Qichao Yang
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Dongfang Qiu
- College of Chemistry and Pharmacy Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
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5
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Shi P, Jiang Q, Zhang Q, Tian Y. Synthesis, characterization, emission and DNA binding properties of four alkynylplatinum(II) terpyridine complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Lu T, Wang C, Lystrom L, Pei C, Kilina S, Sun W. Effects of extending the π-conjugation of the acetylide ligand on the photophysics and reverse saturable absorption of Pt(ii) bipyridine bisacetylide complexes. Phys Chem Chem Phys 2016; 18:28674-28687. [DOI: 10.1039/c6cp02628a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Extending the acetylide ligand π-conjugation diminishes the terminal substituent effect on the lowest excited states, but expands the triplet excited-state absorption to the near-IR region.
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Affiliation(s)
- Taotao Lu
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA
| | - Chengzhe Wang
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA
| | - Levi Lystrom
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA
| | - Chengkui Pei
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA
| | - Wenfang Sun
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA
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7
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Chatterjee S, Norton AE, Edwards MK, Peterson JM, Taylor SD, Bryan SA, Andersen A, Govind N, Albrecht-Schmitt TE, Connick WB, Levitskaia TG. Highly Selective Colorimetric and Luminescence Response of a Square-Planar Platinum(II) Terpyridyl Complex to Aqueous TcO4–. Inorg Chem 2015; 54:9914-23. [DOI: 10.1021/acs.inorgchem.5b01664] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sayandev Chatterjee
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Amie E. Norton
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Matthew K. Edwards
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - James M. Peterson
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Stephen D. Taylor
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Samuel A. Bryan
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Amity Andersen
- Environmental & Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Niranjan Govind
- Environmental & Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Thomas E. Albrecht-Schmitt
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - William B. Connick
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Tatiana G. Levitskaia
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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8
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Qiu D, Li M, Zhao Q, Wang H, Yang C. Cyclometalated Platinum(II) Terpyridylacetylide with a Bis(arylamine) Donor as a Proton-Triggered Luminescence Chemosensor for Zn2+. Inorg Chem 2015. [DOI: 10.1021/acs.inorgchem.5b00756] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dongfang Qiu
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473061, P. R. China
| | - Mengmeng Li
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473061, P. R. China
| | - Qian Zhao
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473061, P. R. China
| | - Hongwei Wang
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473061, P. R. China
| | - Chunxia Yang
- College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, 473061, P. R. China
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9
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Yam VWW, Au VKM, Leung SYL. Light-Emitting Self-Assembled Materials Based on d8 and d10 Transition Metal Complexes. Chem Rev 2015; 115:7589-728. [DOI: 10.1021/acs.chemrev.5b00074] [Citation(s) in RCA: 1065] [Impact Index Per Article: 118.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vonika Ka-Man Au
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Sammual Yu-Lut Leung
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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10
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Castellano FN. Altering molecular photophysics by merging organic and inorganic chromophores. Acc Chem Res 2015; 48:828-39. [PMID: 25646710 DOI: 10.1021/ar500385e] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Photofunctional molecules and assemblies lie at the heart of many important fundamental processes in nature, and researchers have generated multitudes of artificial chromophores intended to mimic these naturally occurring systems. As dynamic spectroscopic techniques are becoming more widely available, ultrafast techniques in particular, substantial insight continues to be gleaned from the initial photon stimulation event through internal conversion, structural rearrangements, intersystem crossing, energy migration, electron transfer events, and ultimately regeneration of the ground state chromophores in both naturally occurring and inspired chromophores. This Account details research endeavors motivated by the concept that merging organic and inorganic chromophores can lead to new molecules exhibiting novel excited state properties. Moreover, these excited state properties can be fundamentally understood using combinations of static and dynamic spectroscopic tools, yielding systematic improvements to molecules poised for application in diverse research areas including light-harvesting, lifetime engineering, photocatalysis, and photochemical upconversion. Initial explorations focused on utilizing Förster energy transfer processes in Ru(II)-based metal-organic chromophores for solar light-harvesting while maintaining long excited state lifetimes. This eventually led to molecules exhibiting triplet-triplet energy transfer between energetically proximate triplet states featuring thermally activated photoluminescence from the upper charge transfer excited state with markedly extended lifetimes. Interest in systematically producing long-lived excited states with concomitant large Stokes shifts inspired the development of numerous Pt(II) bipyridyl and terpyridyl acetylide charge transfer chromophores featuring ultrafast intramolecular energy migration, high quantum yield ligand-localized phosphorescence at room temperature, and synthetically tunable excited state absorption properties. This structural motif also made it possible to access the triplet excited states of perylenediimide chromophores, permitting quantitative examination of internal conversion and intersystem crossing processes in these complex molecules. The generation of new metal-organic structures featuring unique photophysics appears limitless and simply requires the continued ingenuity of researchers.
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Affiliation(s)
- Felix N. Castellano
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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11
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Sheng CX, Singh S, Gambetta A, Drori T, Tong M, Tretiak S, Vardeny ZV. Ultrafast intersystem-crossing in platinum containing π-conjugated polymers with tunable spin-orbit coupling. Sci Rep 2014; 3:2653. [PMID: 24030602 PMCID: PMC3772376 DOI: 10.1038/srep02653] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 08/22/2013] [Indexed: 11/09/2022] Open
Abstract
The development of efficient organic light-emitting diodes (OLED) and organic photovoltaic cells requires control over the dynamics of spin sensitive excitations. Embedding heavy metal atoms in π-conjugated polymer chains enhances the spin-orbit coupling (SOC), and thus facilitates intersystem crossing (ISC) from the singlet to triplet manifolds. Here we use various nonlinear optical spectroscopies such as two-photon absorption and electroabsorption in conjunction with electronic structure calculations, for studying the energies, emission bands and ultrafast dynamics of spin photoexcitations in two newly synthesized π-conjugated polymers that contain intrachain platinum (Pt) atoms separated by one (Pt-1) or three (Pt-3) organic spacer units. The controllable SOC in these polymers leads to a record ISC time of <~1 ps in Pt-1 and ~6 ps in Pt-3. The tunable ultrafast ISC rate modulates the intensity ratio of the phosphorescence and fluorescence emission bands, with potential applications for white OLEDs.
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Affiliation(s)
- C-X Sheng
- 1] Department of Physics & Astronomy, University of Utah, Salt Lake City, Utah 84112, USA [2] School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China [3]
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12
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Li Y, Dandu N, Liu R, Kilina S, Sun W. Synthesis and photophysics of reverse saturable absorbing heteroleptic iridium(iii) complexes bearing 2-(7-R-fluoren-2′-yl)pyridine ligands. Dalton Trans 2014; 43:1724-35. [DOI: 10.1039/c3dt52184b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Plyusnin VF, Pozdnyakov IP, Grivin VP, Solovyev AI, Lemmetyinen H, Tkachenko NV, Larionov SV. Femtosecond spectroscopy of the dithiolate Cu(ii) and Ni(ii) complexes. Dalton Trans 2014; 43:17766-74. [DOI: 10.1039/c4dt01407c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Femtosecond spectroscopy was applied to study the ultrafast dynamics for the excited states of dithiolate Cu(ii) and Ni(ii) complexes.
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Affiliation(s)
- Victor F. Plyusnin
- Institute of Chemical Kinetics and Combustion Siberian Branch of Russian Academy of Sciences
- Novosibirsk, Russia
- Department of Natural Sciences
- Novosibirsk State University (National Research University)
- Novosibirsk, Russia
| | - Ivan P. Pozdnyakov
- Institute of Chemical Kinetics and Combustion Siberian Branch of Russian Academy of Sciences
- Novosibirsk, Russia
- Department of Natural Sciences
- Novosibirsk State University (National Research University)
- Novosibirsk, Russia
| | - Vjacheslav P. Grivin
- Institute of Chemical Kinetics and Combustion Siberian Branch of Russian Academy of Sciences
- Novosibirsk, Russia
| | - Aleksey I. Solovyev
- Department of Natural Sciences
- Novosibirsk State University (National Research University)
- Novosibirsk, Russia
| | - Helge Lemmetyinen
- Department of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere, Finland
| | - Nikolai V. Tkachenko
- Department of Chemistry and Bioengineering
- Tampere University of Technology
- 33101 Tampere, Finland
| | - Stanislav V. Larionov
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk, Russia
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14
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Cao Y, Wolf MO, Patrick BO. A Terthiophene-Containing Alkynylplatinum Terpyridine Pacman Complex: Controllable Folding/Unfolding Modulated by Weak Intermolecular Interactions. Inorg Chem 2013; 52:5636-8. [DOI: 10.1021/ic400338v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yang Cao
- Department of Chemistry, University of British Columbia, Vancouver, British
Columbia V6T 1Z1, Canada
| | - Michael O. Wolf
- Department of Chemistry, University of British Columbia, Vancouver, British
Columbia V6T 1Z1, Canada
| | - Brian O. Patrick
- Department of Chemistry, University of British Columbia, Vancouver, British
Columbia V6T 1Z1, Canada
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15
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Chen JS, Zhao GJ, Cook TR, Han KL, Stang PJ. Photophysical Properties of Self-Assembled Multinuclear Platinum Metallacycles with Different Conformational Geometries. J Am Chem Soc 2013; 135:6694-702. [DOI: 10.1021/ja402421w] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jun-Sheng Chen
- State Key Laboratory of Molecular
Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s
Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People’s
Republic of China
| | - Guang-Jiu Zhao
- State Key Laboratory of Molecular
Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s
Republic of China
| | - Timothy R. Cook
- Department
of Chemistry, University of Utah, Salt
Lake City, Utah 84112, United
States
| | - Ke-Li Han
- State Key Laboratory of Molecular
Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s
Republic of China
| | - Peter J. Stang
- Department
of Chemistry, University of Utah, Salt
Lake City, Utah 84112, United
States
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16
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Ko SB, Lu JS, Kang Y, Wang S. Impact of a Picolinate Ancillary Ligand on Phosphorescence and Fluoride Sensing Properties of BMes2-Functionalized Platinum(II) Compounds. Organometallics 2013. [DOI: 10.1021/om301112u] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Soo-Byung Ko
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7M 3N6, Canada
| | - Jia-Sheng Lu
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7M 3N6, Canada
| | - Youngjin Kang
- Division of Science Education, Kangwon National University, Chuncheon 200-701, Republic
of Korea
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7M 3N6, Canada
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17
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Papanikolaou P, Mohanraj J, Czapik A, Gdaniec M, Accorsi G, Akrivos P. Capturing the geometry of the emissive state of a Cu(i) red emitter through strong intramolecular stacking forces. Dalton Trans 2013; 42:3357-65. [PMID: 23233125 DOI: 10.1039/c2dt32324a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Panagiotis Papanikolaou
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Inorganic Chemistry, P.O.B. 135, GR-541 24 Thessaloniki, Greece.
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18
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Nonlinear Absorbing Platinum(II) Diimine Complexes: Synthesis, Photophysics, and Reverse Saturable Absorption. Chemistry 2012; 18:11440-8. [DOI: 10.1002/chem.201200254] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 05/18/2012] [Indexed: 11/07/2022]
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19
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Prusakova V, McCusker CE, Castellano FN. Ligand-Localized Triplet-State Photophysics in a Platinum(II) Terpyridyl Perylenediimideacetylide. Inorg Chem 2012; 51:8589-98. [DOI: 10.1021/ic301169t] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Valentina Prusakova
- Department of Chemistry
and Center for Photochemical
Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Catherine E. McCusker
- Department of Chemistry
and Center for Photochemical
Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Felix N. Castellano
- Department of Chemistry
and Center for Photochemical
Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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20
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Li Z, Badaeva E, Zhou D, Bjorgaard J, Glusac KD, Killina S, Sun W. Tuning photophysics and nonlinear absorption of bipyridyl platinum(II) bisstilbenylacetylide complexes by auxiliary substituents. J Phys Chem A 2012; 116:4878-89. [PMID: 22519843 DOI: 10.1021/jp302194r] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The photophysics of six bipyridyl platinum(II) bisstilbenylacetylide complexes with different auxiliary substituents are reported. These photophysical properties have been investigated in detail by UV-vis, photoluminescence (both at room temperature and at 77 K) and transient absorption (nanosecond and femtosecond) spectroscopies, as well as by linear response time-dependent density functional theory (TD-DFT) calculations. The photophysics of the complexes are found to be dominated by the singlet and triplet π,π* transitions localized at the stilbenylacetylide ligands with strong admixture of the metal-to-ligand (MLCT) and ligand-to-ligand (LLCT) charge-transfer characters. The interplay between the π,π* and MLCT/LLCT states depends on the electron-withdrawing or -donating properties of the substituents on the stilbenylacetylide ligands. All complexes exhibit remarkable reverse saturable absorption (RSA) at 532 nm for nanosecond laser pulses, with the complex that contains the NPh(2) substituent giving the strongest RSA and the complex with NO(2) substituent showing the weakest RSA.
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Affiliation(s)
- Zhongjing Li
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, USA
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21
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Wang X, Goeb S, Ji Z, Pogulaichenko NA, Castellano FN. Homogeneous Photocatalytic Hydrogen Production Using π-Conjugated Platinum(II) Arylacetylide Sensitizers. Inorg Chem 2011; 50:705-7. [DOI: 10.1021/ic101731j] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xianghuai Wang
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Sébastien Goeb
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Zhiqiang Ji
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Nadezhda A. Pogulaichenko
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Felix N. Castellano
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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