1
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Essawy AA, Alsohaimi IH, Hassan HMA, El Agammy EF, Hussein MF, Hasanin THA, Essawy AENI, Ali HM. Basic Fuchsin Dye as the First Fluorophore for Optical Sensing of Morpholine in Fruits Crust and Urine Samples. Anal Chem 2024; 96:373-380. [PMID: 38113479 DOI: 10.1021/acs.analchem.3c04392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
In this work, basic fuchsin (BF) dyestuff was presented as the first optical sensor used for the spectrofluorimetric assessment of morpholine (MOR) where BF exhibits morpholine-sensing behavior. The developed fluorimetric avenue is sensitive, facile, selective, and validated for assaying the sensitizing influence of MOR on the BF fluorescence in an aprotic dioxane solvent. Parameters like solvents, BF concentration, order, and time of addition that influence the fluorescence intensity of the probing system were addressed. Optimizing the analytical methodology revealed a linear fluorescence sensitization within the addition of MOR in the two concentration ranges of 5 × 10-9 to 1.0 × 10-7 mol L-1 and 2.0 × 10-7 to 3 × 10-6 mol L-1. The limit of detection (LOD) and limit of quantification (LOQ) were estimated to be 2.0 × 10-9 mol L-1 (0.17 ng mL-1) and 6.66 × 10-9 mol L-1 (0.567 ng mL-1), respectively. High levels of accuracy and precision are achieved when assaying spiked MOR either in pure solutions or samples of fruit peel extract and human urine. Moreover, the green character and practicality/applicability of the method were evaluated by AGREE and BAGI metric tools. These merit outcomes provide insights into the development of fluorescent sensors for MOR detection using fluorescent dyes and meet the Food and Drug Administration's requirements for morpholine detection in real-life applications.
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Affiliation(s)
- Amr A Essawy
- Chemistry Department, College of Science, Jouf University, PO. Box 72341Sakaka,Aljouf,Kingdom of Saudi Arabia
| | - I H Alsohaimi
- Chemistry Department, College of Science, Jouf University, PO. Box 72341Sakaka,Aljouf,Kingdom of Saudi Arabia
| | - Hassan M A Hassan
- Chemistry Department, College of Science, Jouf University, PO. Box 72341Sakaka,Aljouf,Kingdom of Saudi Arabia
| | - E F El Agammy
- Physics Department, College of Science, Jouf University, P.O. Box 72341 Sakaka, Aljouf,Kingdom of Saudi Arabia
| | - M F Hussein
- Chemistry Department, College of Science, Jouf University, PO. Box 72341Sakaka,Aljouf,Kingdom of Saudi Arabia
| | - Tamer H A Hasanin
- Chemistry Department, College of Science, Jouf University, PO. Box 72341Sakaka,Aljouf,Kingdom of Saudi Arabia
| | - Abd El-Naby I Essawy
- Chemistry Department, Faculty of Science, Fayoum University, Fayoum 63514, Egypt
| | - Hazim M Ali
- Chemistry Department, College of Science, Jouf University, PO. Box 72341Sakaka,Aljouf,Kingdom of Saudi Arabia
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2
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Sissaoui J, Budkina DS, Vauthey E. Torsional Disorder, Symmetry Breaking, and the Crystal Violet Shoulder Controversy. J Phys Chem Lett 2023:5602-5606. [PMID: 37307294 DOI: 10.1021/acs.jpclett.3c01038] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The nature of the lowest-energy electronic absorption band of crystal violet (CV) and particularly the origin of its high-energy shoulder have been debated since the middle of the past century. The most recent studies invoke a splitting of the S1 state upon symmetry breaking induced by interactions with the solvent and/or the counterion. Using a combination of stationary and time-resolved polarized spectroscopy together with quantum-chemical calculations, we show that torsional disorder in the ground-state results in an inhomogeneous broadening of the absorption band of CV. The center of the band is mostly due to symmetric molecules with a degenerate S1 state, whereas the edges originate from transitions to the S1 and S2 states of distorted symmetry-broken molecules. Transient-absorption measurements with different excitation wavelengths reveal that these two groups of molecules interconvert rapidly in liquid but not in a rigid environment.
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Affiliation(s)
- Jihad Sissaoui
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Darya S Budkina
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
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3
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Grilj J, Beckwith JS, Vauthey E. Excited-state Dynamics of Radical Ions in Liquids. Chimia (Aarau) 2021; 75:856-861. [PMID: 34728012 DOI: 10.2533/chimia.2021.856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Thomas Bally has acquired international recognition for his work on the photochemistry of reactive intermediates, which include radical ions. Here, we present a brief overview of our investigations of the excited-state dynamics of radical ions in liquids at room temperature, which are still poorly documented. A better understanding of these dynamics is most relevant, as open-shell ions in the excited state are being increasingly used in redox photochemistry and have been proposed to play a key role in highly exergonic photoinduced electron transfer reactions.
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Affiliation(s)
- Jakob Grilj
- Dept. of Physical Chemistry, University of Geneva, 30 quai Ernest-Ansermet, CH-1220 Geneva; Present address: AWK Group AG, Leutschenbachstrasse 45, CH-8050 Zurich, Switzerland
| | - Joseph S Beckwith
- Dept. of Physical Chemistry, University of Geneva, 30 quai Ernest-Ansermet, CH-1220 Geneva; Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Eric Vauthey
- Dept. of Physical Chemistry, University of Geneva, 30 quai Ernest-Ansermet, CH-1220 Geneva;,
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4
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Ota C, Matsumoto A, Hidaka T, Sugihara K, Teramoto T, Nagasawa Y. Ultrafast Dynamics of a Solvatochromic Dye, Phenol Blue: Tautomerization and Coherent Wavepacket Oscillations. J Phys Chem B 2021; 125:10832-10842. [PMID: 34543033 DOI: 10.1021/acs.jpcb.1c07501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Femtosecond time-resolved transient absorption spectroscopy was performed for a nonfluorescent solvatochromic dye, phenol blue, N-(4-dimethylaminophenyl)-1,4-benzoquinoneimine, which exhibits ultrafast nonradiative decay due to its flexible molecular structure. By exciting the molecule in ethanol (EtOH) solution with two excitation wavelengths located at shorter- and longer-wavelength sides of the visible absorption band, we observed ultrafast nonradiative decay from the excited state, followed by spectral evolution in the ground state. The nonradiative decay in the subpicosecond range creates a vibrationally hot ground state with the lifetime in the picosecond range. Subsequently, a tautomer that absorbs at shorter wavelengths is produced from the hot state, which causes a red shift of the ground-state bleach (GSB). The tautomerization presumably involves twisting of the benzoquinoneimine moiety induced by the breaking of the hydrogen bond (H-bond) between the solute and the solvent molecules. The recombination of the H-bond occurs with a time constant of ∼30 ps, and the system returns to its original state. We also observed low-frequency coherent wavepacket oscillations that modulate the GSB with dephasing times similar to the excited-state lifetime.
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Affiliation(s)
- Chikashi Ota
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Akifumi Matsumoto
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Tsubasa Hidaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Keita Sugihara
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Takahiro Teramoto
- Institute for Radiation Sciences, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yutaka Nagasawa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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5
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Biswas C, Rao Soma V, Chetti P, Santosh Kumar Raavi S. Ultrafast Excited State Relaxation Dynamics of New Fuchsine- a Triphenylmethane Derivative Dye. Chemphyschem 2021; 22:2562-2572. [PMID: 34528749 DOI: 10.1002/cphc.202100562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/07/2021] [Indexed: 11/11/2022]
Abstract
An all-inclusive investigation of the ultrafast excited state relaxation dynamics of a triphenylmethane derivative molecule, New Fuchsine (NF), using a combined approach of density functional theory (DFT), femtosecond transient absorption spectroscopy (fs-TAS), and photoluminescence spectroscopy is presented in this work. The DFT calculations confirmed the formation of twisted molecular structure in the excited state of NF in ethanol solution with bond rotation of ≈ 860 . TAS measurements of NF solution exhibited ultrafast ground state-recovery pathway via a conical intersection confirming an ultrafast structural reorientation. On the contrary, TAS measurements of NF thin-film exhibited a longer excited-state lifetime suggesting a hindered molecular twisted state formed as an intermediate step. Photophysical kinetic models are proposed to globally fit the fs-TAS data establishing the twisted intramolecular charge transfer (TICT) state mediated ground state recovery for NF in solution and thin film, respectively. Temperature-dependent photoluminescence study of NF film provided a clear insight into the effect of rotational motion of phenyl rings in NF molecules over the TICT mediated emission.
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Affiliation(s)
- Chinmoy Biswas
- Ultrafast Photophysics and Photonics Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Kandi 502285, Telangana, India
| | - Venugopal Rao Soma
- Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad 500046, Telangana, India
| | - Prabhakar Chetti
- Department of Chemistry, National Institute of Technology, Kurukshetra 136119, Haryana, India
| | - Sai Santosh Kumar Raavi
- Ultrafast Photophysics and Photonics Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Kandi 502285, Telangana, India
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6
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Zhou Y, Gurzadyan GG, Ni W, Gelin MF, Sun L. Upper Excited State Photophysics of Malachite Green in Solution and Films. J Phys Chem B 2020; 124:4293-4302. [PMID: 32366105 DOI: 10.1021/acs.jpcb.0c01737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Relaxation pathways of upper excited electronic states of malachite green (MG) in ethanol and in films are studied by steady-state and time-resolved spectroscopic techniques. In contrast to ethanol, where MG emits weak short-lived spectrally well separated S2 and S1 fluorescence with the lifetimes ∼0.3 and ∼0.9 ps, MG films show a much stronger broadband fluorescence within 430-700 nm, revealing multiexponential kinetics with the characteristic decay times τ1 ≈ 1 ps, τ2 ≈ 10 ps, τ3 ≈ 0.05-0.8 ns, and τ4 ≈ 2-3 ns. By the analysis of spectroscopic responses of MG in ethanol and in films as well as by theoretical modeling, we demonstrate that significant increase of fluorescence lifetimes and substantial enhancement of fluorescence intensity in MG films are stipulated by the decrease of efficiency of the S2 → S1 and S1 → S0 internal conversion, which in turn is caused by hindrance of rotation of MG's phenyl rings controlling the S2/S1 and S1/S0 conical intersections. These findings indicate that MG films may become promising non-Kasha materials (with reasonable S2 emission) with numerous photophysical and photochemical applications.
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Affiliation(s)
- Yichen Zhou
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, Dalian University of Technology, 116024 Dalian, China
| | - Gagik G Gurzadyan
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, Dalian University of Technology, 116024 Dalian, China
| | - Wenjun Ni
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, Dalian University of Technology, 116024 Dalian, China
| | - Maxim F Gelin
- School of Sciences, Hangzhou Dianzi University, 310018 Hangzhou, China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, Dalian University of Technology, 116024 Dalian, China.,Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 10044 Stockholm, Sweden
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7
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Caprice K, Aster A, Cougnon FBL, Kumpulainen T. Untying the Photophysics of Quinolinium-Based Molecular Knots and Links. Chemistry 2020; 26:1576-1587. [PMID: 31670851 DOI: 10.1002/chem.201904456] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/30/2019] [Indexed: 01/08/2023]
Abstract
Complex molecular knots and links are still difficult to synthesize and the properties arising from their topology are mostly unknown. Here, we report on a comparative photophysical study carried out on a family of closely related quinolinium-based knots and links to determine the impact exerted by topology on the molecular backbone. Our results indicate that topology has a negligible influence on the behavior of loosely braided molecules, which mostly behave like their unbraided equivalents. On the other hand, tightly braided molecules display distinct features. Their higher packing density results in a pronounced ability to resist deformation, a significant reduction in the solvent-accessible surface area and favors close-range π-π interactions between the quinolinium units and neighboring aromatics. Finally, the sharp alteration in behavior between loosely and tightly braided molecules sheds light on the factors contributing to braiding tightness.
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Affiliation(s)
- Kenji Caprice
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest Ansermet, Geneva, Switzerland
| | - Alexander Aster
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, Geneva, Switzerland
| | - Fabien B L Cougnon
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest Ansermet, Geneva, Switzerland
| | - Tatu Kumpulainen
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, Geneva, Switzerland
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8
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Chatterjee S, Ahire K, Karuso P. Room-Temperature Dual Fluorescence of a Locked Green Fluorescent Protein Chromophore Analogue. J Am Chem Soc 2019; 142:738-749. [PMID: 31846319 DOI: 10.1021/jacs.9b05096] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A structurally locked green fluorescent protein (GFP) chromophore with a phenyl group at C(2) of the imidazolone has been synthesized. Rotation around the exocyclic double bond is hindered, resulting in room-temperature fluorescence. The quantum yield in water is 500 times greater than that of unlocked analogues. Unlike the methyl-substituted analogue, the phenyl analogue exhibits a dual emission (cyan and red) that can be used for ultrasensitive ratiometric measurements and fluorescence microscopy. To explain this dual emission, DFT calculations were carried out along with fluorescence upconversion experiments. The Z-isomer was found to be emissive, while the origin of the dual emission was dependent on the phenyl group in the Z-isomer, which stabilizes the Franck-Condon state, resulting in a cyan fluorescence, while the zwitterionic tautomer fluoresces red. These results bring important new insights into the photophysics of the GFP chromophore and provide a new scaffold capable of dual emission with utility in biotechnology.
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Affiliation(s)
- Soumit Chatterjee
- Department of Molecular Sciences , Macquarie University , Sydney , NSW 2109 , Australia
| | - Ketan Ahire
- Department of Molecular Sciences , Macquarie University , Sydney , NSW 2109 , Australia
| | - Peter Karuso
- Department of Molecular Sciences , Macquarie University , Sydney , NSW 2109 , Australia
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9
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Rogers DA, Bensalah AT, Espinosa AT, Hoerr JL, Refai FH, Pitzel AK, Alvarado JJ, Lamar AA. Amplification of Trichloroisocyanuric Acid (TCCA) Reactivity for Chlorination of Arenes and Heteroarenes via Catalytic Organic Dye Activation. Org Lett 2019; 21:4229-4233. [DOI: 10.1021/acs.orglett.9b01414] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David A. Rogers
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - Adam T. Bensalah
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - Alvaro Tomas Espinosa
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - John L. Hoerr
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - Fares H. Refai
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - Amy K. Pitzel
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - Juan J. Alvarado
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
| | - Angus A. Lamar
- Department of Chemistry and Biochemistry, The University of Tulsa, 800 South Tucker Drive, Tulsa, Oklahoma 74104, United States
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10
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Ota C, Sugihara K, Kinoshita Y, Kashiyama Y, Nagasawa Y, Tamiaki H. Ultrafast excited state dynamics of nonfluorescent cyclopheophorbide-aenol, a catabolite of chlorophyll-adetoxified in algae-feeding aquatic microbes. Photochem Photobiol Sci 2019; 18:64-70. [DOI: 10.1039/c8pp00173a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transient absorption spectroscopy revealed that a catabolite of chlorophyll-a, cPPB-aE, undergoes ultrafast nonradiative decay through an intermediate state.
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Affiliation(s)
- Chikashi Ota
- College of Life Sciences
- Ritsumeikan University
- Kusatsu
- Japan
| | - Keita Sugihara
- College of Life Sciences
- Ritsumeikan University
- Kusatsu
- Japan
| | - Yusuke Kinoshita
- Graduate School of Life Sciences
- Ritsumeikan University
- Kusatsu
- Japan
| | - Yuichiro Kashiyama
- Graduate School of Life Sciences
- Ritsumeikan University
- Kusatsu
- Japan
- Graduate School of Engineering
| | | | - Hitoshi Tamiaki
- Graduate School of Life Sciences
- Ritsumeikan University
- Kusatsu
- Japan
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11
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Essawy AA, Ali HM. Novel spectrofluorimetric assessment of ondansetron hydrochloride based on excited state quenching of pararosaniline fluorophore. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.06.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Chakraborty G, Ray AK, Pal H. Interaction of a Triaryl Methane Dye with Cucurbit[7]uril and Bovine Serum Albumin: A Perspective of Cooperative versus Competitive Bindings. ChemistrySelect 2018. [DOI: 10.1002/slct.201702753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Goutam Chakraborty
- Laser & Plasma Technology Division; Bhabha Atomic Research Centre; Mumbai-400085 India; & Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Alok. K. Ray
- Laser & Plasma Technology Division; Bhabha Atomic Research Centre; Mumbai-400085 India; & Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Haridas Pal
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai-400085 India; & Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
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13
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Kumar Das D, Makhal K, Goswami D. Observing ground state vibrational coherence and excited state relaxation dynamics of a cyanine dye in pure solvents. Phys Chem Chem Phys 2018; 20:13400-13411. [DOI: 10.1039/c7cp08605a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using a degenerate pump probe technique at 800 nm, Ground State Vibrational Coherence (GSVC) of a cyanine dye (IR780) is explored in various solvents.
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Affiliation(s)
- Dipak Kumar Das
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Krishnandu Makhal
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Debabrata Goswami
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
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14
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Karlsson JKG, Woodford OJ, Mustroph H, Harriman A. Cyanine dyes as ratiometric fluorescence standards for the far-red spectral region. Photochem Photobiol Sci 2018; 17:99-106. [DOI: 10.1039/c7pp00333a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Absolute fluorescence quantum yields are reported for a group of commercially available dyes suitable for use as secondary standards across the far-red spectral window.
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Affiliation(s)
- Joshua K. G. Karlsson
- Molecular Photonics Laboratory
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
| | - Owen J. Woodford
- Molecular Photonics Laboratory
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
| | - Heinz Mustroph
- FEW Chemicals GmbH
- Ortsteil Wolfen
- 06766 Bitterfeld-Wolfen
- Germany
| | - Anthony Harriman
- Molecular Photonics Laboratory
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
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15
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Karam TE, Siraj N, Zhang Z, Ezzir AF, Warner IM, Haber LH. Ultrafast and nonlinear spectroscopy of brilliant green-based nanoGUMBOS with enhanced near-infrared emission. J Chem Phys 2017; 147:144701. [DOI: 10.1063/1.4994712] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Tony E. Karam
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Noureen Siraj
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, USA
| | - Zhenyu Zhang
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Abdulrahman F. Ezzir
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Isiah M. Warner
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Louis H. Haber
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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16
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Kumpulainen T, Lang B, Rosspeintner A, Vauthey E. Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution. Chem Rev 2016; 117:10826-10939. [DOI: 10.1021/acs.chemrev.6b00491] [Citation(s) in RCA: 249] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tatu Kumpulainen
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Bernhard Lang
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
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17
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Chatterjee T, Lacombat F, Yadav D, Mandal M, Plaza P, Espagne A, Mandal PK. Ultrafast Dynamics of a Green Fluorescent Protein Chromophore Analogue: Competition between Excited-State Proton Transfer and Torsional Relaxation. J Phys Chem B 2016; 120:9716-22. [DOI: 10.1021/acs.jpcb.6b05795] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tanmay Chatterjee
- Department
of Chemical Sciences, Indian Institute of Science Education and Research (IISER) - Kolkata, Mohanpur, West-Bengal 741246, India
| | - Fabien Lacombat
- Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Département de Chimie, PASTEUR, 24, rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06,
ENS, CNRS, PASTEUR, 75005 Paris, France
| | - Dheerendra Yadav
- Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Département de Chimie, PASTEUR, 24, rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06,
ENS, CNRS, PASTEUR, 75005 Paris, France
| | - Mrinal Mandal
- Department
of Chemical Sciences, Indian Institute of Science Education and Research (IISER) - Kolkata, Mohanpur, West-Bengal 741246, India
| | - Pascal Plaza
- Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Département de Chimie, PASTEUR, 24, rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06,
ENS, CNRS, PASTEUR, 75005 Paris, France
| | - Agathe Espagne
- Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Département de Chimie, PASTEUR, 24, rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06,
ENS, CNRS, PASTEUR, 75005 Paris, France
| | - Prasun K. Mandal
- Department
of Chemical Sciences, Indian Institute of Science Education and Research (IISER) - Kolkata, Mohanpur, West-Bengal 741246, India
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18
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Xie BB, Xia SH, Liu LH, Cui G. Surface-Hopping Dynamics Simulations of Malachite Green: A Triphenylmethane Dye. J Phys Chem A 2015; 119:5607-17. [DOI: 10.1021/acs.jpca.5b02549] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin-Bin Xie
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Shu-Hua Xia
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Li-Hong Liu
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ganglong Cui
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
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19
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Ley C, Brendlé J, Walter A, Jacques P, Ibrahim A, Allonas X. On the interaction of triarylmethane dye crystal violet with LAPONITE® clay: using mineral nanoparticles to control the dye photophysics. Phys Chem Chem Phys 2015; 17:16677-81. [DOI: 10.1039/c5cp02370j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The combination of an organic dye with clays leads to very interesting hybrid materials with original properties.
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Affiliation(s)
- C. Ley
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires
- ENSCMu
- Université de Haute-Alsace
- 68093 Mulhouse Cedex
- France
| | - J. Brendlé
- Pôle Matériaux à Porosité Contrôlée
- Institut de Science des Matériaux de Mulhouse
- CNRS-UMR7361
- Université de Strasbourg-Université de Haute-Alsace
- 68093 Mulhouse Cedex
| | - A. Walter
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires
- ENSCMu
- Université de Haute-Alsace
- 68093 Mulhouse Cedex
- France
| | - P. Jacques
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires
- ENSCMu
- Université de Haute-Alsace
- 68093 Mulhouse Cedex
- France
| | - A. Ibrahim
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires
- ENSCMu
- Université de Haute-Alsace
- 68093 Mulhouse Cedex
- France
| | - X. Allonas
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires
- ENSCMu
- Université de Haute-Alsace
- 68093 Mulhouse Cedex
- France
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20
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Muratsugu A, Watanabe J, Kinoshita S. Effect of diffusion on Förster resonance energy transfer in low-viscosity solution. J Chem Phys 2014; 140:214508. [PMID: 24908027 DOI: 10.1063/1.4881461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The effect of translational diffusion on Förster resonance energy transfer between rhodamine 6G (the donor) and malachite green (the acceptor) was investigated by examining the donor's fluorescence decay profile. Eight straight-chain alkyl alcohols were used, and the temperature of ethanol was changed to vary the viscosity; the decay profiles were analyzed using the theory developed by Gösele. The critical transfer distance obtained from the decay profile is in good agreement with that evaluated using the spectroscopic quantities, and the diffusion coefficients are consistent with the Stokes-Einstein relation. The fluorescence decay profile was described well by Gösele's theory and the effect of diffusion is clearly verified by the temperature/viscosity dependence of the diffusion constant.
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Affiliation(s)
- Atsushi Muratsugu
- Graduate School of Frontier Biosciences, Osaka University, Osaka 5650871, Japan
| | - Junji Watanabe
- Graduate School of Frontier Biosciences, Osaka University, Osaka 5650871, Japan
| | - Shuichi Kinoshita
- Graduate School of Frontier Biosciences, Osaka University, Osaka 5650871, Japan
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21
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Laptenok SP, Addison K, Heisler IA, Meech SR. Excited state structural dynamics in higher lying electronic states: S2 state of malachite green. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Singhal P, Ghosh HN. Ultrafast excited state dynamics of S2 and S1 states of triphenylmethane dyes. Phys Chem Chem Phys 2014; 16:16824-31. [DOI: 10.1039/c4cp01766h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Excited state dynamics of S2 and S1 states for a series of TPM dyes, pyrogallol red (PGR), bromopyrogallol red (Br-PGR) and aurin tricarboxylic acid (ATC), have been monitored by using ultrafast transient absorption and fluorescence up-conversion techniques.
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Affiliation(s)
- Pallavi Singhal
- Health Physics Division
- Bhabha Atomic Research Centre
- Mumbai – 400 085, India
| | - Hirendra N. Ghosh
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai – 400 085, India
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23
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Riedle E, Bradler M, Wenninger M, Sailer CF, Pugliesi I. Electronic transient spectroscopy from the deep UV to the NIR: unambiguous disentanglement of complex processes. Faraday Discuss 2013; 163:139-58; discussion 243-75. [PMID: 24020200 DOI: 10.1039/c3fd00010a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Eberhard Riedle
- Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität München, Oettingenstr. 67, 80538 Miünchen, Germany.
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24
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Suzuki T, Sakano Y, Iwai T, Iwashita S, Miura Y, Katoono R, Kawai H, Fujiwara K, Tsuji Y, Fukushima T. 7,7,8,8-Tetraaryl-o-quinodimethane Stabilized by Dibenzo Annulation: A Helical π-Electron System That Exhibits Electrochromic and Unique Chiroptical Properties. Chemistry 2012; 19:117-23. [DOI: 10.1002/chem.201203092] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Indexed: 11/11/2022]
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25
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Olsen S, McKenzie RH. A two-state model of twisted intramolecular charge-transfer in monomethine dyes. J Chem Phys 2012; 137:164319. [DOI: 10.1063/1.4762561] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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26
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Li G, Magana D, Dyer RB. Direct observation and control of ultrafast photoinduced twisted intramolecular charge transfer (TICT) in triphenyl-methane dyes. J Phys Chem B 2012; 116:12590-6. [PMID: 23009668 PMCID: PMC3475756 DOI: 10.1021/jp307091f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Femtosecond time-resolved infrared spectroscopy was employed to study intramolecular charge transfer in triphenylmethane dyes, including malachite green (MG), malachite green carbinol base (MGCB), and leucomalachite green (LMG). A local excited state (LE) and a twisted intramolecular charge-transfer (TICT) state have been observed directly in MG. Furthermore, solvent-controlled TICT measurements in a series of linear alcohols indicate that the transition time (4-11 ps) from LE to TICT is strongly dependent on alcohol viscosity, which is due to rotational hindrance of dimethylaniline in high-viscosity solvents. For LMG, no TICT is observed due to steric hindrance caused by the sp(3)-hybridized central carbon atom. However, for MGCB, TICT is rescued by the addition of the electron-donating hydroxyl group to the bridge. These results for MG and its analogues provide new insight regarding the dynamics and mechanism of twisted intramolecular charge transfer (TICT) in triphenylmethane dyes.
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Affiliation(s)
- Guifeng Li
- Department of Chemistry, Emory University, Atlanta, Georgia, 30322, United States
| | - Donny Magana
- Department of Chemistry, Emory University, Atlanta, Georgia, 30322, United States
| | - R. Brian Dyer
- Department of Chemistry, Emory University, Atlanta, Georgia, 30322, United States
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27
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Fedoseeva M, Richert S, Vauthey E. Excited-state dynamics of organic dyes at liquid/liquid interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:11291-11301. [PMID: 22680345 DOI: 10.1021/la301505e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Liquid/liquid interfaces play a crucial role in numerous areas of science. However, direct spectroscopic access to this thin (~1 nm) region is not possible with conventional optical methods. After a brief review of the most used techniques to perform interfacial optical spectroscopy, we will focus on time-resolved surface second harmonic generation, which allows the measurement of the excited-state dynamics of probe molecules at interfaces. By comparing these dynamics with those measured in bulk solutions, precious information on the properties of the interfacial region can be obtained. To illustrate this, several studies performed in our group will be presented.
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Affiliation(s)
- Marina Fedoseeva
- Department of Physical Chemistry, University of Geneva, Genève 4, Switzerland
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28
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Nakayama A, Taketsugu T. Ultrafast Nonradiative Decay of Electronically Excited States of Malachite Green: Ab Initio Calculations. J Phys Chem A 2011; 115:8808-15. [DOI: 10.1021/jp203415m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Akira Nakayama
- Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Tetsuya Taketsugu
- Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan
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29
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Singh C, Modak B, Mondal JA, Palit DK. Ultrafast Twisting Dynamics in the Excited State of Auramine. J Phys Chem A 2011; 115:8183-96. [DOI: 10.1021/jp2020287] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chandralekha Singh
- Radiation and Photochemistry Division, ‡Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Brindaban Modak
- Radiation and Photochemistry Division, ‡Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Jahur A. Mondal
- Radiation and Photochemistry Division, ‡Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Dipak K. Palit
- Radiation and Photochemistry Division, ‡Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai 400085, India
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30
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Cecchini MP, Hong J, Lim C, Choo J, Albrecht T, deMello AJ, Edel JB. Ultrafast Surface Enhanced Resonance Raman Scattering Detection in Droplet-Based Microfluidic Systems. Anal Chem 2011; 83:3076-81. [DOI: 10.1021/ac103329b] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
| | - Jongin Hong
- Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea
| | - Chaesung Lim
- Department of Bionano Engineering, Hanyang University, Sa-1-dong, Ansan 426-791, Korea
| | - Jaebum Choo
- Department of Bionano Engineering, Hanyang University, Sa-1-dong, Ansan 426-791, Korea
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31
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Rather SR, Yadav R, Sen P. Microviscosity inside a nanocavity: a femtosecond fluorescence up-conversion study of malachite green. J Phys Chem B 2010; 114:13988-94. [PMID: 20949966 DOI: 10.1021/jp1037238] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Femtosecond fluorescence up-conversion measurements of malachite green (MG) have been carried out to confirm the relaxation pathway and subsequently to probe the microviscosity of water trapped in a nanoconfined environment using an AOT (sodium dioctylsulfosuccinate, aerosol-OT) reverse micelle as a model system. The experimental results reveal a strong dependence of S(1) state relaxation dynamics of MG on solvent viscosity while a very weak dependence has been observed for the S(2) state relaxation. The time-dependent density functional theory (TD-DFT) calculations have been used to construct potential energy surfaces of MG by pursuing an intramolecular rotation along the torsional coordinate of the phenyl rings. On synchronization with the experimental observations, the computational results comprehend the existence of a conical intersection along the S(1) and S(0) potential energy surfaces, which leads to mixed vibrational levels of S(1) and S(0) characteristics. The results suggest that the conical intersection is along the torsional coordinate of N,N-dimethyl substituted phenyl ring. Correlating the observed dynamics of MG in a confined system with the relaxation time of MG in different glycerol-water mixtures, we assert the determination of the microviscosity of water inside the AOT reverse micelle. The data confer that the microviscosity of water in an AOT water pool of w(0) = 2 (9 cP) is almost 9 times higher than the bulk water. As we increase the w(0) from 2 to 40, the microviscosity decreases monotonically to 5.68 cP, and the decrease is observed to be exponential in nature.
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Affiliation(s)
- Shahnawaz R. Rather
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India
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32
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Sen P, Yamaguchi S, Tahara T. Ultrafast dynamics of malachite green at the air/water interface studied by femtosecond time-resolved electronic sum frequency generation (TR-ESFG): an indicator for local viscosity. Faraday Discuss 2010. [DOI: 10.1039/b908097j] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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33
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Varne M, Samant V, Mondal JA, Nayak SK, Ghosh HN, Palit DK. Ultrafast Relaxation Dynamics of the Excited States of 1-Amino- and 1-(N,N-Dimethylamino)-fluoren-9-ones. Chemphyschem 2009; 10:2979-94. [DOI: 10.1002/cphc.200900309] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Goswami T, Kumar SKK, Dutta A, Goswami D. Probing the Ultrafast Solution Dynamics of a Cyanine Dye in an Organic Solvent Interfaced with Water. J Phys Chem B 2009; 113:16332-6. [DOI: 10.1021/jp903753u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tapas Goswami
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
| | - S. K. Karthick Kumar
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
| | - Aveek Dutta
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
| | - Debabrata Goswami
- Department of Chemistry and Centre for Laser Technology, Indian Institute of Technology, Kanpur, UP - 208016, India
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35
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Suzuki T, Ishigaki Y, Iwai T, Kawai H, Fujiwara K, Ikeda H, Kano Y, Mizuno K. Multi-Input/Multi-Output Molecular Response System Based on the Dynamic Redox Behavior of 3,3,4,4-Tetraaryldihydro[5]helicene Derivatives: Reversible Formation/Destruction of Chiral Fluorophore and Modulation of Chiroptical Properties by Solvent Polarity. Chemistry 2009; 15:9434-41. [DOI: 10.1002/chem.200900968] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Saita K, Nakazono M, Zaitsu K, Nanbu S, Sekiya H. Theoretical Study of Photophysical Properties of Bisindolylmaleimide Derivatives. J Phys Chem A 2009; 113:8213-20. [DOI: 10.1021/jp9043489] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kenichiro Saita
- Department of Chemistry, Faculty of Science, Graduate School of Molecular Chemistry, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, Research Institute for Information Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Manabu Nakazono
- Department of Chemistry, Faculty of Science, Graduate School of Molecular Chemistry, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, Research Institute for Information Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kiyoshi Zaitsu
- Department of Chemistry, Faculty of Science, Graduate School of Molecular Chemistry, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, Research Institute for Information Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Shinkoh Nanbu
- Department of Chemistry, Faculty of Science, Graduate School of Molecular Chemistry, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, Research Institute for Information Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Hiroshi Sekiya
- Department of Chemistry, Faculty of Science, Graduate School of Molecular Chemistry, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, Research Institute for Information Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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37
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Schmidhammer U, Megerle U, Lochbrunner S, Riedle E, Karpiuk J. The Key Role of Solvation Dynamics in Intramolecular Electron Transfer: Time-Resolved Photophysics of Crystal Violet Lactone. J Phys Chem A 2008; 112:8487-96. [DOI: 10.1021/jp800863u] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Uli Schmidhammer
- Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität (LMU), Oettingenstr. 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Uwe Megerle
- Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität (LMU), Oettingenstr. 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Stefan Lochbrunner
- Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität (LMU), Oettingenstr. 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Eberhard Riedle
- Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität (LMU), Oettingenstr. 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Jerzy Karpiuk
- Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität (LMU), Oettingenstr. 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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38
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Study of intramolecular charge transfer of Michler’s ketone using time dependent density functional theory. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2008.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Fukuda M, Kajimoto O, Terazima M, Kimura Y. Application of the transient grating method to the investigation of the photo-thermalization process of malachite green in room temperature ionic liquids. J Mol Liq 2007. [DOI: 10.1016/j.molliq.2006.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Sherin PS, Snytnikova OA, Tsentalovich YP, Sagdeev RZ. Competition between ultrafast relaxation and photoionization in excited prefluorescent states of tryptophan and indole. J Chem Phys 2006; 125:144511. [PMID: 17042613 DOI: 10.1063/1.2348868] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The quantum yield of photoionization of TrpH and IndH from the nonrelaxed prefluorescent state S* increases with the temperature decrease. This effect is attributed to the competition between temperature independent ionization and ultrafast thermal relaxation S* --> S1. The rate constant of the relaxation does not depend on the solvent and on the presence of the amino acid side chain: the temperature dependences of photoionization quantum yield, obtained for TrpH and IndH in different solvents, practically coincide. The activation energy for the relaxation rate constant Er approximately 4.5 kJ/mol probably corresponds to intramolecular process or to the formation of the vibronically excited transient complex between photoexcited molecule and solvent molecules.
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Affiliation(s)
- P S Sherin
- International Tomography Center, 630090 Novosibirsk, Russia and Novosibirsk State University, 630090 Novosibirsk, Russia
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41
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Duan XH, Li XY, He RX, Cheng XM. Time-dependent density functional theory study on intramolecular charge transfer and solvent effect of dimethylaminobenzophenone. J Chem Phys 2006; 122:84314. [PMID: 15836046 DOI: 10.1063/1.1850097] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The lower singlet excited states for dimethylaminobenzophenone have been investigated as a function of the twisting motion with inclusion of solvent effects. Theoretical calculations have been performed using time-dependent density functional theory. The B3LYP and MPW1PW91 functionals with a 6-311+G(2d,p) basis set have been used to compute transition energies. The solvent effects have been described within the polarizable continuum model. Ground-state geometries are optimized using density functional theory with both B3LYP and MPW1PW91 functionals combined with 6-31G(d) basis sets. Vertical absorption energy calculations characterize the lower singlet excited states both in vacuum and in different kinds of solvents. A large redshift of the absorption maximum in the polar solvent suggests an intramolecular charge transfer character of the excited state. We have constructed the potential energy curves of two possible twisting motions of the excited states both in vacuum and in the polar solvent of acetonitrile: the twisting of only the dimethylamino group and the twisting of the dimethylaminophenyl group with respect to the benzoyl group. Both twisting processes predict the formation of the twisted intramolecular charge transfer state associated with the crossing of a low barrier. The presence of the polar solvent significantly changes the shape of the energy curves. Calculated emission energies for both the isolated and the solvated systems show a large Stokes shift between the absorption and fluorescence maxima. Two possible twisting motions produce similar fluorescence spectroscopic consequences. Our results including solvent effects explain the weak "dual-fluorescence" feature of dimethylaminobenzophenone, and imply that the two possible twisting motions may occur in the excited-state relaxation dynamics, but the twisting of the dimethylamino group seems to take place easier.
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Affiliation(s)
- Xiao-Hui Duan
- College of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
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42
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Kiba T, Sato SI, Akimoto S, Kasajima T, Yamazaki I. Solvent-assisted intramolecular vibrational energy redistribution of S1 perylene in ketone solvents. J Photochem Photobiol A Chem 2006. [DOI: 10.1016/j.jphotochem.2005.09.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Mondal JA, Ghosh HN, Ghanty TK, Mukherjee T, Palit DK. Twisting Dynamics in the Excited Singlet State of Michler's Ketone. J Phys Chem A 2006; 110:3432-46. [PMID: 16526622 DOI: 10.1021/jp0555450] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ultrafast relaxation dynamics of the excited singlet (S(1)) state of Michler's ketone (MK) has been investigated in different kinds of solvents using a time-resolved absorption spectroscopic technique with 120 fs time resolution. This technique reveals that conversion of the locally excited (LE) state to the twisted intramolecular charge transfer (TICT) state because of twisting of the N,N-dimethylanilino groups with respect to the central carbonyl group is the major relaxation process responsible for the multi-exponential and probe-wavelength-dependent transient absorption dynamics of the S1 state of MK, but solvation dynamics does not have a significant role in this process. Theoretical optimization of the ground-state geometry of MK shows that the dimethylanilino groups attached to the central carbonyl group are at a dihedral angle of about 51 degrees with respect to each other because of steric interaction between the phenyl rings. Following photoexcitation of MK to its S1 state, two kinds of twisting motions have been resolved. Immediately after photoexcitation, an ultrafast "anti-twisting" motion of the dimethylanilino groups brings back the pretwisted molecule to a near-planar geometry with high mesomeric interaction and intramolecular charge transfer (ICT) character. This motion is observed in all kinds of solvents. Additionally, in solvents of large polarity, the dimethylamino groups undergo further twisting to about 90 degrees with respect to the phenyl ring, to which it is attached, leading to the conversion of the ICT state to the TICT state. Similar characteristics of the absorption spectra of the TICT state and the anion radical of MK establish the nearly pure electron transfer (ET) character of the TICT state. In aprotic solvents, because of the steep slope of the potential energy surface near the Franck-Condon (FC) or LE state region, the LE state is nearly nonemissive at room temperature and fluorescence emission is observed from only the ICT and TICT states. Alternatively, in protic solvents, because of an intermolecular hydrogen-bonding interaction between MK and the solvent, the LE region is more flat and stimulated emission from this state is also observed. However, a stronger hydrogen-bonding interaction between the TICT state and the solvent as well as the closeness between the two potential energy surfaces due to the TICT and the ground states cause the nonradiative coupling between these states to be very effective and, hence, cause the TICT state to be weakly emissive. The multi-exponentiality and strong wavelength-dependence of the kinetics of the relaxation process taking place in the S1 state of MK have arisen for several reasons, such as strong overlapping of transient absorption and stimulated emission spectra of the LE, ICT, and TICT states, which are formed consecutively following photoexcitation of the molecule, as well as the fact that different probe wavelengths monitor different regions of the potential energy surface representing the twisting motion of the excited molecule.
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Affiliation(s)
- Jahur A Mondal
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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Nagasawa Y, Nakagawa Y, Nagafuji A, Okada T, Miyasaka H. The microscopic viscosity of water–alcohol binary solvents studied by ultrafast spectroscopy utilizing diffusive phenyl ring rotation of malachite green as a probe. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.11.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bizjak T, Karpiuk J, Lochbrunner S, Riedle E. 50-fs Photoinduced Intramolecular Charge Separation in Triphenylmethane Lactones. J Phys Chem A 2004. [DOI: 10.1021/jp0473772] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Tanja Bizjak
- Lehrstuhl für BioMolekulare Optik, Sektion Physik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Jerzy Karpiuk
- Lehrstuhl für BioMolekulare Optik, Sektion Physik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Stefan Lochbrunner
- Lehrstuhl für BioMolekulare Optik, Sektion Physik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Eberhard Riedle
- Lehrstuhl für BioMolekulare Optik, Sektion Physik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, 80538 München, Germany, and Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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Singh AK, Ramakrishna G, Ghosh HN, Palit DK. Photophysics and Ultrafast Relaxation Dynamics of the Excited States of Dimethylaminobenzophenone. J Phys Chem A 2004. [DOI: 10.1021/jp037132+] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bhasikuttan AC, Sapre AV, Okada T. Ultrafast Relaxation Dynamics from the S2 State of Malachite Green Studied with Femtosecond Upconversion Spectroscopy. J Phys Chem A 2003. [DOI: 10.1021/jp034486s] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Achikanath C. Bhasikuttan
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560 8531, Japan, and Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Avinash V. Sapre
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560 8531, Japan, and Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Tadashi Okada
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560 8531, Japan, and Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Development of kinetic analysis system in pump–probe measurement based on femtosecond chromium: forsterite laser and its application to S1–S0 relaxation dynamics of azulene. J Photochem Photobiol A Chem 2003. [DOI: 10.1016/s1010-6030(02)00407-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Nagasawa Y, Watanabe A, Takikawa H, Okada T. Solute Dependence of Three Pulse Photon Echo Peak Shift Measurements in Methanol Solution. J Phys Chem A 2003. [DOI: 10.1021/jp0271559] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yutaka Nagasawa
- Department of Chemistry, Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Ayako Watanabe
- Department of Chemistry, Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Hiroko Takikawa
- Department of Chemistry, Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Tadashi Okada
- Department of Chemistry, Graduate School of Engineering Science and Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan
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