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Koo S, Kim YH, Flender O, Scholz M, Oum K, Lenzer T. Photoinduced Dynamics of 13,13'-Diphenylpropyl-β-carotene. Molecules 2023; 28:molecules28083505. [PMID: 37110738 PMCID: PMC10143239 DOI: 10.3390/molecules28083505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/01/2023] [Accepted: 04/02/2023] [Indexed: 04/29/2023] Open
Abstract
Carotenoids are ubiquitous pigment systems in nature which are relevant to a range of processes, such as photosynthesis, but the detailed influence of substitutions at the polyene backbone on their photophysics is still underexplored. Here, we present a detailed experimental and theoretical investigation of the carotenoid 13,13'-diphenylpropyl-β-carotene using ultrafast transient absorption spectroscopy and steady-state absorption experiments in n-hexane and n-hexadecane, complemented by DFT/TDDFT calculations. In spite of their bulkiness and their potential capability to "fold back" onto the polyene system, which could result in π-stacking effects, the phenylpropyl residues have only a minor impact on the photophysical properties compared with the parent compound β-carotene. Ultrafast spectroscopy finds lifetimes of 200-300 fs for the S2 state and 8.3-9.5 ps for the S1 state. Intramolecular vibrational redistribution with time constants in the range 0.6-1.4 ps is observed in terms of a spectral narrowing of the S1 spectrum over time. We also find clear indications of the presence of vibrationally hot molecules in the ground electronic state (S0*). The DFT/TDDFT calculations confirm that the propyl spacer electronically decouples the phenyl and polyene π-systems and that the substituents in the 13 and 13' positions point away from the polyene system.
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Affiliation(s)
- Sangho Koo
- Department of Chemistry, Myongji University, Myongji-Ro 116, Cheoin-Gu, Yongin 17058, Gyeonggi-Do, Republic of Korea
| | - Yeong Hun Kim
- Department of Chemistry, Myongji University, Myongji-Ro 116, Cheoin-Gu, Yongin 17058, Gyeonggi-Do, Republic of Korea
| | - Oliver Flender
- Physical Chemistry 2, Department Chemistry and Biology, Faculty IV: School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Mirko Scholz
- Physical Chemistry 2, Department Chemistry and Biology, Faculty IV: School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Kawon Oum
- Physical Chemistry 2, Department Chemistry and Biology, Faculty IV: School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Thomas Lenzer
- Physical Chemistry 2, Department Chemistry and Biology, Faculty IV: School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
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Synthetic Access to Aromatic α-Haloketones. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113583. [PMID: 35684526 PMCID: PMC9182500 DOI: 10.3390/molecules27113583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/24/2022]
Abstract
α-Haloketones play an essential role in the synthesis of complex N-, S-, O-heterocycles; of which some exhibit a remarkable biological activity. Research further illustrated that α-bromo-, α-chloro-, and α-iodoketones are key precursors for blockbuster pharmacological compounds. Over the past twenty years, substantial advances have been made in the synthesis of these industrially relevant building blocks. Efforts have focused on rendering the synthetic protocols greener, more effective and versatile. In this survey, we summarised and thoroughly evaluated the progress of the field, established in the past two decades, in terms of generality, efficacy and sustainability.
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Lim B, Jung H, Yoo H, Park M, Yang H, Chung WJ, Koo S. Synthetic Strategy for Tetraphenyl-Substituted All- E
-Carotenoids with Improved Molecular Properties. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Boram Lim
- Department of Chemistry; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
| | - Hyunuk Jung
- Department of Energy Science and Technology; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
| | - Hyebin Yoo
- Department of Energy Science and Technology; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
| | - Myeongnam Park
- Department of Energy Science and Technology; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
| | - Huijeong Yang
- Department of Energy Science and Technology; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
| | - Wook-Jin Chung
- Department of Energy Science and Technology; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
| | - Sangho Koo
- Department of Chemistry; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
- Department of Energy Science and Technology; Myongji University; Myongji-Ro 116, Cheoin-Gu 17058 Yongin Gyeonggi-Do Korea
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Deng L, Kleij AW, Yang W. Diversity‐Orientated Stereoselective Synthesis through Pd‐Catalyzed Switchable Decarboxylative C−N/C−S Bond Formation in Allylic Surrogates. Chemistry 2018; 24:19156-19161. [DOI: 10.1002/chem.201805295] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Lei Deng
- Chinese Academy of SciencesKey Laboratory of Receptor ResearchShanghai Institute of Materia Medica Shanghai P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
- Nano Science and Technology InstituteUniversity of Science and Technology of China Suzhou Jiangsu 215123 P. R. China
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ) Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institution of Research and Advanced Studies (ICREA) Pg. Lluis Companys 23 08010 Barcelona Spain
| | - Weibo Yang
- Chinese Academy of SciencesKey Laboratory of Receptor ResearchShanghai Institute of Materia Medica Shanghai P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
- University of Science and Technology Liaoning Anshan 114051 P. R. China
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Excited-state dynamics of 3,3′-dihydroxyisorenieratene and (3R,3′R)-zeaxanthin: Observation of vibrationally hot S0 species. Arch Biochem Biophys 2018; 646:137-144. [DOI: 10.1016/j.abb.2018.03.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/13/2018] [Accepted: 03/26/2018] [Indexed: 11/19/2022]
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Kim M, Jung H, Aragonès AC, Díez-Pérez I, Ahn KH, Chung WJ, Kim D, Koo S. Role of Ring Ortho Substituents on the Configuration of Carotenoid Polyene Chains. Org Lett 2018; 20:493-496. [PMID: 29319322 DOI: 10.1021/acs.orglett.7b03930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The 9-(Z)-configuration was exclusively obtained in the carotenoid polyene chain irrespective of olefination and disconnection methods for terminal ortho-unsubstituted benzene rings. The 2,6-dimethyl substituents in the terminal rings secure an all-(E)-polyene structure. The single molecular conductance of the pure 9-(Z)-carotene was measured for the first time to be 1.53 × 10-4 ± 6.37 × 10-5G0, whose value was 47% that of the all-(E)-carotene ((3.23 × 10-4) ± (1.23 × 10-4) G0).
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Affiliation(s)
- Minsoo Kim
- Department of Energy Science and Technology and Department of Chemistry, Myongji University , Myongji-Ro 116, Cheoin-Gu, Yongin, Gyeonggi-Do 17058, Korea
| | - Hyunuk Jung
- Department of Energy Science and Technology and Department of Chemistry, Myongji University , Myongji-Ro 116, Cheoin-Gu, Yongin, Gyeonggi-Do 17058, Korea
| | - Albert C Aragonès
- Department of Chemistry, Faculty of Natural & Mathematical Sciences, King's College London , Britannia House, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - Ismael Díez-Pérez
- Department of Chemistry, Faculty of Natural & Mathematical Sciences, King's College London , Britannia House, 7 Trinity Street, London SE1 1DB, United Kingdom
| | - Kwang-Hyun Ahn
- Department of Applied Chemistry, Kyung Hee University , Yongin, Gyeonggi-Do 17104, Korea
| | - Wook-Jin Chung
- Department of Energy Science and Technology and Department of Chemistry, Myongji University , Myongji-Ro 116, Cheoin-Gu, Yongin, Gyeonggi-Do 17058, Korea
| | - Dahye Kim
- Department of Energy Science and Technology and Department of Chemistry, Myongji University , Myongji-Ro 116, Cheoin-Gu, Yongin, Gyeonggi-Do 17058, Korea
| | - Sangho Koo
- Department of Energy Science and Technology and Department of Chemistry, Myongji University , Myongji-Ro 116, Cheoin-Gu, Yongin, Gyeonggi-Do 17058, Korea
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