1
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Ultrafast charge transfer dynamics in 2D covalent organic frameworks/Re-complex hybrid photocatalyst. Nat Commun 2022; 13:845. [PMID: 35149679 PMCID: PMC8837612 DOI: 10.1038/s41467-022-28409-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 01/18/2022] [Indexed: 12/16/2022] Open
Abstract
Rhenium(I)-carbonyl-diimine complexes have emerged as promising photocatalysts for carbon dioxide reduction with covalent organic frameworks recognized as perfect sensitizers and scaffold support. Such Re complexes/covalent organic frameworks hybrid catalysts have demonstrated high carbon dioxide reduction activities but with strong excitation energy-dependence. In this paper, we rationalize this behavior by the excitation energy-dependent pathways of internal photo-induced charge transfer studied via transient optical spectroscopies and time-dependent density-functional theory calculation. Under band-edge excitation, the excited electrons are quickly injected from covalent organic frameworks moiety into catalytic RheniumI center within picosecond but followed by fast backward geminate recombination. While under excitation with high-energy photon, the injected electrons are located at high-energy levels in RheniumI centers with longer lifetime. Besides those injected electrons to RheniumI center, there still remain some long-lived electrons in covalent organic frameworks moiety which is transferred back from RheniumI. This facilitates the two-electron reaction of carbon dioxide conversion to carbon monoxide. Re complexes within covalent organic frameworks have emerged as promising photocatalysts for CO2 reduction. Here, authors identify a high-energy electron transfer pathway during CO2 reduction that results in longer-lived excited states than a low-energy electron transfer pathway.
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2
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Giuliani G, Melaccio F, Gozem S, Cappelli A, Olivucci M. QM/MM Investigation of the Spectroscopic Properties of the Fluorophore of Bacterial Luciferase. J Chem Theory Comput 2021; 17:605-613. [PMID: 33449693 PMCID: PMC9220819 DOI: 10.1021/acs.jctc.0c01078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We employ replica-exchange molecular dynamics (REMD) and a hybrid ab initio multiconfigurational quantum mechanics/molecular mechanics (QM/MM) approach to model the absorption and fluorescence properties of bacterial luciferin-luciferase. Specifically, we employ complete active space perturbation theory (CASPT2) and study the effect of active space, basis set, and IPEA shift on the computed energies. We discuss the effect of the protein environment on the fluorophore's excited-state potential energy surface and the role that the protein plays in enhancing the fluorescence quantum yield in bacterial bioluminescence.
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Affiliation(s)
- Germano Giuliani
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Federico Melaccio
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Samer Gozem
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30302, United States
| | - Andrea Cappelli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Massimo Olivucci
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
- Department of Chemistry, Bowling Green State University, Bowing Green, Ohio 43403, United States
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3
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Srivastava V, Singh PK, Srivastava A, Singh PP. Synthetic applications of flavin photocatalysis: a review. RSC Adv 2021. [DOI: 10.1039/d1ra00925g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Encouraging developments in the field of photocatalysis in last decades, biomolecules namely flavins have been observed to act as a catalyst in several photoredox-catalysed synthetic methodologies.
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Affiliation(s)
- Vishal Srivastava
- Department of Chemistry
- CMP Degree College
- University of Allahabad
- Prayagraj 211002
- India
| | - Pravin K. Singh
- Department of Chemistry
- CMP Degree College
- University of Allahabad
- Prayagraj 211002
- India
| | - Arjita Srivastava
- Department of Chemistry
- CMP Degree College
- University of Allahabad
- Prayagraj 211002
- India
| | - Praveen P. Singh
- Department of Chemistry
- United College of Engineering & Research
- Prayagraj 211010
- India
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4
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Su D, Kabir MP, Orozco-Gonzalez Y, Gozem S, Gadda G. Fluorescence Properties of Flavin Semiquinone Radicals in Nitronate Monooxygenase. Chembiochem 2019; 20:1646-1652. [PMID: 30748074 DOI: 10.1002/cbic.201900016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Indexed: 11/09/2022]
Abstract
Fluorescent cofactors like flavins can be exploited to probe their local environment with spatial and temporal resolution. Although the fluorescence properties of the oxidized and two-electron-reduced states of flavins have been studied extensively, this is not the case for the one-electron-reduced state. Both the neutral and anionic semiquinones have proven particularly challenging to examine, as they are unstable in solution and are transient, short-lived species in many catalytic cycles. Here, we report that the nitronate monooxygenase (NMO) from Pseudomonas aeruginosa PAO1 is capable of stabilizing both semiquinone forms anaerobically for hours, thus enabling us to study their spectroscopy in a constant protein environment. We found that in the active site of NMO, the anionic semiquinone exhibits no fluorescence, whereas the neutral semiquinone radical shows a relatively strong fluorescence, with a behavior that violates the Kasha-Vavilov rule. These fluorescence properties are discussed in the context of time-dependent density functional theory calculations, which reveal low-lying dark states in both systems.
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Affiliation(s)
- Dan Su
- Department of Chemistry, Georgia State University, 50 Decatur St. SE, Atlanta, GA, 30302, USA
| | - Mohammad Pabel Kabir
- Department of Chemistry, Georgia State University, 50 Decatur St. SE, Atlanta, GA, 30302, USA
| | - Yoelvis Orozco-Gonzalez
- Department of Chemistry, Georgia State University, 50 Decatur St. SE, Atlanta, GA, 30302, USA
| | - Samer Gozem
- Department of Chemistry, Georgia State University, 50 Decatur St. SE, Atlanta, GA, 30302, USA
| | - Giovanni Gadda
- Department of Chemistry, Georgia State University, 50 Decatur St. SE, Atlanta, GA, 30302, USA.,Department of Biology, Georgia State University, 100 Piedmond Ave., Atlanta, GA, 30303, USA.,Center for Diagnostics and Therapeutics, Georgia State University, P.O. Box 5090, Atlanta, GA, 30303, USA.,Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA, 30302, USA
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5
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Leblanc N, Genovese D, De Cola L, Powell AK. A platform with connections in many directions - further remarkable facets to the multifaceted methylbiquinoxen dication. Phys Chem Chem Phys 2017; 19:6981-6988. [PMID: 27929154 DOI: 10.1039/c6cp07538j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The N,N'-dimethyl-3,3'-biquinoxalinium "methylbiquinoxen" dicationic platform is revealed to have even more fascinating possibilities than we originally thought in terms of its chemical versatility. In addition to its rich redox chemistry and coordination abilities, we have now unveiled an unexpected Lewis acid/base chemistry linked with a tuneable switching of its luminescence properties. This, amongst other things, allows for the facile fluorescent covalent labelling of hydroxyl-terminated materials. This platform provides intriguing chemical prospects realised in molecular systems such as porphyrins as well as an easy alternative functionalisation methodology to that provided by click-chemistry.
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Affiliation(s)
- Nicolas Leblanc
- Institut für Nanotechnologie, Karlsruher Institut für Technologie, D-76344 Eggenstein-Leopoldshafen, Germany.
| | - Damiano Genovese
- Institut für Nanotechnologie, Karlsruher Institut für Technologie, D-76344 Eggenstein-Leopoldshafen, Germany.
| | - Luisa De Cola
- Institut für Nanotechnologie, Karlsruher Institut für Technologie, D-76344 Eggenstein-Leopoldshafen, Germany. and Université de Strasbourg, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, 67083 Strasbourg Cedex, France
| | - Annie K Powell
- Institut für Nanotechnologie, Karlsruher Institut für Technologie, D-76344 Eggenstein-Leopoldshafen, Germany. and Institut für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstraβe 15, D-76131, Karlsruhe, Germany.
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6
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Luo Y, Liu YJ. Bioluminophore and Flavin Mononucleotide Fluorescence Quenching of Bacterial Bioluminescence-A Theoretical Study. Chemistry 2016; 22:16243-16249. [PMID: 27665749 DOI: 10.1002/chem.201603314] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Indexed: 02/02/2023]
Abstract
Bacterial bioluminescence with continuous glow has been applied to the fields of environmental toxin monitoring, drug screening, and in vivo imaging. Nonetheless, the chemical form of the bacterial bioluminophore is still a bone of contention. Flavin mononucleotide (FMN), one of the light-emitting products, and 4a-hydroxy-5-hydro flavin mononucleotide (HFOH), an intermediate of the chemical reactions, have both been assumed candidates for the light emitter because they have similar molecular structures and fluorescence wavelengths. The latter is preferred in experiments and was assigned in our previous density functional study. HFOH displays weak fluorescence in solutions, but exhibits strong bioluminescence in the bacterial luciferase. FMN shows the opposite behavior; its fluorescence is quenched when it is bound to the luciferase. This is the first example of flavin fluorescence quenching observed in bioluminescent systems and is merely an observation, both the quenching mechanism and quencher are still unclear. Based on theoretical analysis of high-level quantum mechanics (QM), combined QM and molecular mechanics (QM/MM), and molecular dynamics (MD), this paper confirms that HFOH in its first singlet excited state is the bioluminophore of bacterial bioluminescence. More importantly, the computational results indicate that Tyr110 in the luciferase quenches the FMN fluorescence via an electron-transfer mechanism.
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Affiliation(s)
- Yanling Luo
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Ya-Jun Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
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7
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Sun SM, Zhang S, Liu K, Wang YP, Zhou MM, Zhang B. Excited State Intramolecular Proton Transfer of 1-Hydroxyanthraquinone. CHINESE J CHEM PHYS 2015. [DOI: 10.1063/1674-0068/28/cjcp1504078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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8
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Bu F, Duan R, Xie Y, Yi Y, Peng Q, Hu R, Qin A, Zhao Z, Tang BZ. Unusual Aggregation-Induced Emission of a Coumarin Derivative as a Result of the Restriction of an Intramolecular Twisting Motion. Angew Chem Int Ed Engl 2015; 54:14492-7. [PMID: 26439884 DOI: 10.1002/anie.201506782] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 08/31/2015] [Indexed: 12/22/2022]
Abstract
Aggregation-induced emission (AIE) is commonly observed for propeller-like luminogens with aromatic rotors and stators. Herein, we report that a coumarin derivative containing a seven-membered aliphatic ring (CD-7) but no rotors showed typical AIE characteristics, whereas its analogue with a five-membered aliphatic ring (CD-5) exhibited an opposite aggregation-caused quenching (ACQ) effect. Experimental and theoretical results revealed that a large aliphatic ring in CD-7 weakens structural rigidity and promotes out-of-plane twisting of the molecular backbone to drastically accelerate nonradiative excited-state decay, thus resulting in poor emission in solution. The restriction of twisting motion in aggregates blocks the nonradiative decay channels and enables CD-7 to fluoresce strongly. The results also show that AIE is a general phenomenon and not peculiar to propeller-like molecules. The AIE and ACQ effects can be switched readily by the modulation of molecular rigidity.
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Affiliation(s)
- Fan Bu
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640 (China)
| | - Ruihong Duan
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
| | - Yujun Xie
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
| | - Yuanping Yi
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China).
| | - Rongrong Hu
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640 (China)
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640 (China)
| | - Zujin Zhao
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640 (China).
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640 (China). .,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (China).
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9
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Bu F, Duan R, Xie Y, Yi Y, Peng Q, Hu R, Qin A, Zhao Z, Tang BZ. Unusual Aggregation-Induced Emission of a Coumarin Derivative as a Result of the Restriction of an Intramolecular Twisting Motion. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506782] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Gozem S, Mirzakulova E, Schapiro I, Melaccio F, Glusac KD, Olivucci M. A Conical Intersection Controls the Deactivation of the Bacterial Luciferase Fluorophore. Angew Chem Int Ed Engl 2014; 53:9870-5. [DOI: 10.1002/anie.201404011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Indexed: 01/24/2023]
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11
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Gozem S, Mirzakulova E, Schapiro I, Melaccio F, Glusac KD, Olivucci M. A Conical Intersection Controls the Deactivation of the Bacterial Luciferase Fluorophore. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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12
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Hou C, Liu YJ, Ferré N, Fang WH. Understanding Bacterial Bioluminescence: A Theoretical Study of the Entire Process, from Reduced Flavin to Light Emission. Chemistry 2014; 20:7979-86. [DOI: 10.1002/chem.201400253] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Indexed: 11/08/2022]
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13
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Khatmullin R, Zhou D, Corrigan T, Mirzakulova E, Glusac KD. Thermolysis and photolysis of 2-ethyl-4-nitro-1(2H)-isoquinolinium hydroperoxide. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Renat Khatmullin
- Department of Chemistry; Bowling Green State University; Bowling Green; OH; 43403; USA
| | - Dapeng Zhou
- Department of Chemistry; Bowling Green State University; Bowling Green; OH; 43403; USA
| | - Thomas Corrigan
- Department of Chemistry; Bowling Green State University; Bowling Green; OH; 43403; USA
| | - Ekaterina Mirzakulova
- Department of Chemistry; Bowling Green State University; Bowling Green; OH; 43403; USA
| | - Ksenija D. Glusac
- Department of Chemistry; Bowling Green State University; Bowling Green; OH; 43403; USA
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14
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Liu R, Azenkeng A, Zhou D, Li Y, Glusac KD, Sun W. Tuning Photophysical Properties and Improving Nonlinear Absorption of Pt(II) Diimine Complexes with Extended π-Conjugation in the Acetylide Ligands. J Phys Chem A 2013; 117:1907-17. [DOI: 10.1021/jp309841x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rui Liu
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Alexander Azenkeng
- Energy and Environmental Research
Center, University of North Dakota, Grand
Forks, North Dakota 58202-9018, United States
| | - Dapeng Zhou
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403-0001, United States
| | - Yuhao Li
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Ksenija D. Glusac
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403-0001, United States
| | - Wenfang Sun
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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15
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Electrode-assisted catalytic water oxidation by a flavin derivative. Nat Chem 2012; 4:794-801. [DOI: 10.1038/nchem.1439] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 07/17/2012] [Indexed: 01/30/2023]
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16
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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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17
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Zhou D, Khatmullin R, Walpita J, Miller NA, Luk HL, Vyas S, Hadad CM, Glusac KD. Mechanistic Study of the Photochemical Hydroxide Ion Release from 9-Hydroxy-10-methyl-9-phenyl-9,10-dihydroacridine. J Am Chem Soc 2012; 134:11301-3. [DOI: 10.1021/ja3031888] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Dapeng Zhou
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403, United States
| | - Renat Khatmullin
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403, United States
| | - Janitha Walpita
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403, United States
| | - Nicholas A. Miller
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403, United States
| | - Hoi Ling Luk
- Department
of Chemistry and
Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Shubham Vyas
- Department
of Chemistry and
Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Christopher M. Hadad
- Department
of Chemistry and
Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ksenija D. Glusac
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio
43403, United States
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