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Kapturkiewicz A, Kamecka A. Luminescence properties of [Ir(C^N) 2(N^N)] + complexes: relations between DFT computation results and emission band-shape analysis data. RSC Adv 2021; 11:29308-29322. [PMID: 35492067 PMCID: PMC9040651 DOI: 10.1039/d1ra05430a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/26/2021] [Indexed: 12/01/2022] Open
Abstract
Luminescence properties of two series of [Ir(C^N)2(N^N)]+ complexes bearing deprotonated 1-phenyl-1H-pyrazole or 1-(2,4-difluorophenyl)-1H-pyrazole as cyclometalating C^N ligands and different α-diimines (2,2′-bipyridine, 1,10-phenanthroline and their derivatives) as ancillary N^N ligands have been studied in acetonitrile solutions at room temperature and in 77 K methanol/ethanol (1 : 1) matrices. Ligand and temperature induced changes in the nature of the emissive 3*[Ir(C^N)2(N^N)]+ species result in well-pronounced changes in their emission properties like emission wavelength, emission quantum yields and emission lifetimes. Depending on the nature of the coordinated C^N and N^N ligands and/or the measurement temperature, the investigated luminophores exhibit emissions arising from the intraligand transitions localized within the N^N ligand or from the metal-to-ligand charge-transfer transitions involving the Ir(C^N)2+ and N^N moieties as confirmed by means of the DFT computations. The computed DFT energies of the excited 3*[Ir(C^N)2(N^N)]+ states and outer/inner reorganization energies associated with the S0 ← 3*[Ir(C^N)2(N^N)]+ transitions remain in nice agreement with those available from the performed emission band-shape analyses. The observed agreement implies ordinary DFT computations at the B3LYP/LANL2DZ/6-31G(d,p) level of theory, even performed neglecting the spin–orbit phenomena, as enough accurate in the quantitative prediction of the most important parameters characterizing the investigated [Ir(C^N)2(N^N)]+ luminophores. For two series of [Ir(C^N)2(N^N)]+ luminophores, the computed DFT quantities remain in nice agreement with those available from the emission band-shape analyses.![]()
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Affiliation(s)
- Andrzej Kapturkiewicz
- Institute of Chemical Sciences, Siedlce University of Natural Sciences and Humanities, 3 Maja 54, 08-110 Siedlce, Poland
| | - Anna Kamecka
- Institute of Chemical Sciences, Siedlce University of Natural Sciences and Humanities, 3 Maja 54, 08-110 Siedlce, Poland
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2
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Kapturkiewicz A. Electrochemical Generation of Excited Intramolecular Charge-Transfer States. ChemElectroChem 2017. [DOI: 10.1002/celc.201600865] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Andrzej Kapturkiewicz
- Institute of Chemistry, Faculty of Sciences; Siedlce University of Natural Sciences and Humanities; 3 Maja 54 08-110 Siedlce Poland
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Matsuoka K, Albrecht K, Yamamoto K, Fujita K. Mulifunctional Dendritic Emitter: Aggregation-Induced Emission Enhanced, Thermally Activated Delayed Fluorescent Material for Solution-Processed Multilayered Organic Light-Emitting Diodes. Sci Rep 2017; 7:41780. [PMID: 28139768 PMCID: PMC5282576 DOI: 10.1038/srep41780] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 12/29/2016] [Indexed: 12/28/2022] Open
Abstract
Thermally activated delayed fluorescence (TADF) materials emerged as promising light sources in third generation organic light-emitting diodes (OLED). Much effort has been invested for the development of small molecular TADF materials and vacuum process-based efficient TADF-OLEDs. In contrast, a limited number of solution processable high-molecular weight TADF materials toward low cost, large area, and scalable manufacturing of solution processed TADF-OLEDs have been reported so far. In this context, we report benzophenone-core carbazole dendrimers (GnB, n = generation) showing TADF and aggregation-induced emission enhancement (AIEE) properties along with alcohol resistance enabling further solution-based lamination of organic materials. The dendritic structure was found to play an important role for both TADF and AIEE activities in the neat films. By using these multifunctional dendritic emitters as non-doped emissive layers, OLED devices with fully solution processed organic multilayers were successfully fabricated and achieved maximum external quantum efficiency of 5.7%.
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Affiliation(s)
- Kenichi Matsuoka
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga koen, Kasuga, Fukuoka 816-8580, Japan
| | - Ken Albrecht
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8503, Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8503, Japan
| | - Katsuhiko Fujita
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga koen, Kasuga, Fukuoka 816-8580, Japan
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Matsubara R, Shimada T, Kobori Y, Yabuta T, Osakai T, Hayashi M. Photoinduced Charge-Transfer State of 4-Carbazolyl-3-(trifluoromethyl)benzoic Acid: Photophysical Property and Application to Reduction of Carbon-Halogen Bonds as a Sensitizer. Chem Asian J 2016; 11:2006-10. [PMID: 27305449 DOI: 10.1002/asia.201600538] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 05/26/2016] [Indexed: 11/10/2022]
Abstract
The photoinduced persistent intramolecular charge-transfer state of 4-carbazolyl-3-(trifluoromethyl)benzoic acid was confirmed. It showed a higher catalytic activity in terms of yield and selectivity in the photochemical reduction of alkyl halides compared to the parent carbazole. Even unactivated primary alkyl bromides could be reduced by this photocatalyst. The high catalytic activity is rationalized by considering the slower backward single-electron transfer owing to the spatial separation of the donor and acceptor subunits.
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Affiliation(s)
- Ryosuke Matsubara
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo, 657-8501, Japan.
| | - Toshiyuki Shimada
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Yasuhiro Kobori
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo, 657-8501, Japan.
| | - Tatsushi Yabuta
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Toshiyuki Osakai
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Masahiko Hayashi
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo, 657-8501, Japan
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5
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Lifshits LM, Budkina DS, Singh V, Matveev SM, Tarnovsky AN, Klosterman JK. Solution-state photophysics of N-carbazolyl benzoate esters: dual emission and order of states in twisted push–pull chromophores. Phys Chem Chem Phys 2016; 18:27671-27683. [DOI: 10.1039/c6cp04619c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The stepwise photoinduced charge transfer in a series ofN-carbazolyl benzoate ester push–pull chromophores has been studied in solution.
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Affiliation(s)
- Liubov M. Lifshits
- Center for Photochemical Sciences
- Department of Chemistry
- Bowling Green State University
- Bowling Green
- USA
| | - Darya S. Budkina
- Center for Photochemical Sciences
- Department of Chemistry
- Bowling Green State University
- Bowling Green
- USA
| | - Varun Singh
- Center for Photochemical Sciences
- Department of Chemistry
- Bowling Green State University
- Bowling Green
- USA
| | - Sergey M. Matveev
- Center for Photochemical Sciences
- Department of Chemistry
- Bowling Green State University
- Bowling Green
- USA
| | - Alexander N. Tarnovsky
- Center for Photochemical Sciences
- Department of Chemistry
- Bowling Green State University
- Bowling Green
- USA
| | - Jeremy K. Klosterman
- Center for Photochemical Sciences
- Department of Chemistry
- Bowling Green State University
- Bowling Green
- USA
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Kamecka A, Kapturkiewicz A. The luminescence properties of heteroleptic [OsCl(CO)(N∩N)(P∩P)]+complexes – radiative and non-radiative deactivation of the excited3*MLCT state. Phys Chem Chem Phys 2015; 17:23332-45. [DOI: 10.1039/c5cp03299g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Combined Mulliken–Hush and Marcus–Jortner formalisms have been successfully used in the interpretation of the luminescence properties of the excited3*MLCT states.
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Affiliation(s)
- Anna Kamecka
- Institute of Chemistry
- Faculty of Sciences
- Siedlce University of Natural Sciences and Humanities
- 08-110 Siedlce
- Poland
| | - Andrzej Kapturkiewicz
- Institute of Chemistry
- Faculty of Sciences
- Siedlce University of Natural Sciences and Humanities
- 08-110 Siedlce
- Poland
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7
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Jayabharathi J, Thanikachalam V, Ramanathan P, Arunpandiyan A. Radiative and nonradioactive electron transfer in donor-acceptor phenanthrimidazoles. J Fluoresc 2014; 24:1603-11. [PMID: 25194432 DOI: 10.1007/s10895-014-1446-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/20/2014] [Indexed: 11/26/2022]
Abstract
Photoinduced electron transfer in a series of naphthyl substituted phenanthrimidazoles has been studied in solutions. The intramolecular charge transfer (CT) leads to a large Stokes shift and large dipole moment in the fluorescent state. Solvatochromic effects on the spectral position and profile of the stationary fluorescence spectra clearly indicate the CT character of the emitting singlet states of all the compounds studied. An analysis of the CT fluorescence lead to the quantities relevant for the electron transfer in the Marcus inverted region.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar, 608 002, Tamilnadu, India,
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Jayabharathi J, Karunakaran C, Thanikachalam V, Ramanathan P. Binding and fluorescence enhancing behaviour of phenanthrimidazole with different phases of TiO2. NEW J CHEM 2014. [DOI: 10.1039/c4nj00610k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jayabharathi J, Kalaiarasi V, Thanikachalam V, Vimal K. Photoinduced intramolecular electron transfer and electronic coupling interactions in π- expanded imidazole derivatives. J Fluoresc 2014; 24:1379-87. [PMID: 24946860 DOI: 10.1007/s10895-014-1400-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/23/2014] [Indexed: 11/25/2022]
Abstract
An intramolecular excited charge transfer (CT) analysis of imidazole derivatives has been made. The determined electronic transition dipole moments has been used to estimate the electronic coupling interactions between the excited charge transfer singlet state ((1)CT) and the ground state (S0) or the locally excited state ((1)LE). The properties of excited (1)CT state imidazole derivatives have been exploited by the significant contribution of the electronic coupling interactions. The excited state intramolecular proton transfer (ESIPT) analysis has also been discussed.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar, 608002, Tamilnadu, India,
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10
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Malińska M, Nowacki J, Kapturkiewicz A, Woźniak K. Differences in electron densities of phenoxazine and phenothiazine derivatives—charge density studies. RSC Adv 2012. [DOI: 10.1039/c2ra01148d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Estrada LA, Yarnell JE, Neckers DC. Revisiting Fluorenone Photophysics via Dipolar Fluorenone Derivatives. J Phys Chem A 2011; 115:6366-75. [DOI: 10.1021/jp200507j] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Leandro A. Estrada
- Center for Photochemical Sciences at Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - James E. Yarnell
- Center for Photochemical Sciences at Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Douglas C. Neckers
- Center for Photochemical Sciences at Bowling Green State University, Bowling Green, Ohio 43403, United States
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12
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Synthesis and Spectroscopic Study of Several Novel Annulated Azulene and Azafluoranthene Based Derivatives. J Fluoresc 2010; 21:443-51. [DOI: 10.1007/s10895-010-0722-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2010] [Accepted: 09/08/2010] [Indexed: 11/26/2022]
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13
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Liu YH, Liu MH. Acidichromism in the Mixed Langmuir-Blodgett Films of Stearic Acid with a Carbazole-containing Schiff Base. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20020200615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Jin M, Malval JP, Morlet-Savary F, Chaumeil H, Defoin A, Batat P, Jonusauskas G. Photoinduced intramolecular electron transfer in a 2,7-diaminofluorene chromophore decorated with two benzophenone subunits. Phys Chem Chem Phys 2009; 11:2622-30. [PMID: 19421518 DOI: 10.1039/b813717j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An extensive photophysical analysis of a 2,7-bis-(N-4-methoxyphenyl-N-phenylamino)fluorene derivative covalently linked with two benzophenone moieties is presented. A systematic comparison with a model chromophore without benzophenone was performed. For both chromophores, the electronic properties of the ground states are completely equivalent indicating that benzophenone subunits do not exhibit any electronic interaction with the diaminofluorene core. However, at the singlet excited state, the presence of benzophenones induces the occurrence of additional non-radiative de-excitation pathways. Even the intersystem crossing rate is significantly increased with respect to that of the model one. A photoinduced intramolecular electron transfer (PIET) from diaminofluorene to benzophenone subunits is proposed as the most efficient quenching process. At low polar solvent, the emission of an exciplex confirms the PIET process and the occurrence of a partial charge separation between donor and acceptor parts.
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Affiliation(s)
- Ming Jin
- Département de Photochimie Générale, UMR CNRS 7525, Université de Haute Alsace, ENSCMu, 3 rue Alfred Werner, 68093, Mulhouse Cedex, France
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15
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Ohta K, Antonov L, Yamada S, Kamada K. Theoretical study of the two-photon absorption properties of several asymmetrically substituted stilbenoid molecules. J Chem Phys 2007; 127:084504. [PMID: 17764266 DOI: 10.1063/1.2753490] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Two-photon absorption (TPA) properties of noncentrosymmetric pi-conjugated stilbenoid molecules with D-pi-A structures, TPA spectra of which have been reported [L. Antonov et al., Phys. Chem. Chem. Phys. 5, 1193 (2003)], have been investigated theoretically by ab initio molecular orbital methods. The difference in the observed one-photon absorption and TPA spectra among compounds with the same donor (D) and acceptor (A) units is well reproduced by the present calculations, although the calculated excitation energies are overestimated by the configuration interaction with single excitation method used. It was found that the spectral differences among the compounds were mainly due to the deviation from the planar structure by intramolecular rotation around the N[Single Bond]C (phenyl) bond of the N-benzilideneanilines having the C[Double Bond]N linkage as the central pi bridge. Substitution of the end donor or acceptor groups with weaker ones leads to a decrease in the TPA intensity of the lowest pi-pi(*) TPA states, resulting mainly from the decrease in the dipole moment of the excited states. The total TPA cross section spectra have been separated into contributions of the dipolar term, which appear only in noncentrosymmetric systems, and the three-state term, which appear in any systems irrespective of symmetry. The dipolar term predominates only for the lowest pi-pi(*) state, while for the higher excited states the three-state terms become predominant. An analysis employing the index R(f) defined with the transition polarizability shows that the TPA properties of the higher excited states are well described by the three-state approximation mediated by the lowest pi-pi(*) state. The differences found between the centrosymmetric and dipolar molecules in the enhancement mechanism of the TPA intensity by substituting the end groups with strong donors are discussed by comparison with the TPA properties of azobenzenes symmetrically substituted with the same donors.
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Affiliation(s)
- Koji Ohta
- Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
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Mac M, Uchacz T, Andrzejak M, Danel A, Szlachcic P. Photophysical properties of some donor–acceptor 1H-pyrazolo[3,4-b]quinolines. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2006.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Density functional theory investigation of the photodissociation channels of acetophenone. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2006.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Cuquerella MC, Miranda MA, Bosca F. Role of Excited State Intramolecular Charge Transfer in the Photophysical Properties of Norfloxacin and Its Derivatives. J Phys Chem A 2006; 110:2607-12. [PMID: 16494369 DOI: 10.1021/jp0559837] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photophysical properties of 1-ethyl-6-fluoro-7-(1-piperazinyl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (norfloxacin, NFX) and some of its derivatives have been studied to evaluate the role of the free carboxylic acid and the nonprotonated piperazinyl group in the behavior of the 1,4-dihydro-4-oxoquinoline ring. Steady state and time-resolved fluorescence measurements at different pHs provide clear evidence in favor of singlet excited-state deactivation of NFX and its N(4')-methyl derivative pefloxacin (PFX) via intramolecular electron transfer from the N(4') atom of the piperazinyl ring to the fluoroquinolone (FQ) main system. This is a very efficient, energy-wasting pathway, which becomes dramatically enhanced in basic media. Acetylation at N(4') (as in ANFX) decreases the availability of the lone pair, making observable its fluorescence and the transient absorption spectrum of its triplet excited state even at high pH. It also reveals that the geometry of FQs changes from an almost sp3 hybridization of the N(1') of the piperazinyl substituent in the ground state to nearly sp2 in the singlet excited state (rehybridization accompanied by intramolecular charge transfer, RICT); accordingly, the singlet energy of ANFX is significantly lower than that of NFX and PFX. The fluorescence measurements using acetonitrile as a polar nonprotic organic solvent further support deactivation of the singlet excited state of nonacetylated NFX derivatives via intramolecular electron transfer from the N(4') atom.
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Affiliation(s)
- M Consuelo Cuquerella
- Instituto de Tecnología Química UPV-CSIC/Departamento de Química, Universidad Politécnica de Valencia, Avenida de los Naranjos s/n, 46022-Valencia, Spain
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Liu T, Wei YG, Yuan YQ, Guo QX. Charge Transfer in Excited Donor-acceptor Phenothiazine Derivatives. CHINESE J CHEM 2005. [DOI: 10.1002/cjoc.200591430] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Sumalekshmy S, Gopidas KR. Intramolecular charge transfer processes in donor–acceptor substituted vinyltetrahydropyrenes. Photochem Photobiol Sci 2005; 4:539-46. [PMID: 15986062 DOI: 10.1039/b503251b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two novel donor-acceptor-substituted vinyltetrahydropyrene derivatives, 2-N,N-dimethylamino-7-(1-carbethoxyvinyl)-4,5,9,10-tetrahydropyrene, , and 2-N,N-dimethylamino-7-(1,1-dicyanovinyl)-4,5,9,10-tetrahydropyrene, , were synthesized and their photophysical properties investigated in solvents of different polarities. Our studies revealed the existence of intramolecular charge transfer excited states in these molecules. For both compounds the fluorescence maxima exhibited solvent polarity-dependent red shifts. These were quantitatively analysed by the Lippert-Mataga and Liptay equations to obtain the excited state dipole moments. Our results indicated that in the case of , emission takes place from a planar (1)CT state in all non-protic solvents. In the case of , the nature of the excited state depends on the solvent. A fast relaxation to a triplet state is proposed in cyclohexane. The emitting state in medium polar solvents is a planar (1)CT state. In highly polar solvents a twisted (1)CT state is invoked to explain the low fluorescence quantum yield. For both compounds CT nature of the emitting states were further confirmed by studies in acidic medium. The ground and excited state pK(a) values for and were determined using absorption and emission spectral changes observed in the presence of protic acids.
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Affiliation(s)
- S Sumalekshmy
- Photosciences and Photonics Group, Chemical Sciences Division, Regional Research Laboratory (CSIR), Trivandrum, India
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He HY, Fang WH, Phillips DL. Photochemistry of Butyrophenone: Combined Complete-Active-Space Self-Consistent Field and Density Functional Theory Study of Norrish Type I and II Reactions. J Phys Chem A 2004. [DOI: 10.1021/jp037735l] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong-Yuan He
- Department of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Wei-Hai Fang
- Department of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - David Lee Phillips
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong S.A.R., People's Republic of China
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Kauffman JF, Khajehpour M, Saleh N. Electron Transfer in a Flexible, Tethered Donor−Acceptor Pair: The Influence of Solute Conformation on Solvent-Dependent Free Energies. J Phys Chem A 2004. [DOI: 10.1021/jp035784s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- John F. Kauffman
- Department of Chemistry, University of MissouriColumbia, Columbia, Missouri 65211
| | - Mazdak Khajehpour
- Department of Chemistry, University of MissouriColumbia, Columbia, Missouri 65211
| | - Na'il Saleh
- Department of Chemistry, University of MissouriColumbia, Columbia, Missouri 65211
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Grabowski ZR, Rotkiewicz K, Rettig W. Structural Changes Accompanying Intramolecular Electron Transfer: Focus on Twisted Intramolecular Charge-Transfer States and Structures. Chem Rev 2003; 103:3899-4032. [PMID: 14531716 DOI: 10.1021/cr940745l] [Citation(s) in RCA: 2251] [Impact Index Per Article: 107.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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An accurate prediction of adiabatic excitation energies to the low-lying electronic states for acetophenone and the related carbonyl compounds. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0166-1280(03)00380-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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