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Jeon K, Jen M, Lee S, Jang T, Pang Y. Intramolecular Charge Transfer of 1-Aminoanthraquinone and Ultrafast Solvation Dynamics of Dimethylsulfoxide. Int J Mol Sci 2021; 22:ijms222111926. [PMID: 34769357 PMCID: PMC8584543 DOI: 10.3390/ijms222111926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 11/16/2022] Open
Abstract
The intramolecular charge transfer (ICT) of 1-aminoanthraquinone (AAQ) in the excited state strongly depends on its solvent properties, and the twisted geometry of its amino group has been recommended for the twisted ICT (TICT) state by recent theoretical works. We report the transient Raman spectra of AAQ in a dimethylsulfoxide (DMSO) solution by femtosecond stimulated Raman spectroscopy to provide clear experimental evidence for the TICT state of AAQ. The ultrafast (~110 fs) TICT dynamics of AAQ were observed from the major vibrational modes of AAQ including the νC-N + δCH and νC=O modes. The coherent oscillations in the vibrational bands of AAQ strongly coupled to the nuclear coordinate for the TICT process have been observed, which showed its anharmonic coupling to the low frequency out of the plane deformation modes. The vibrational mode of solvent DMSO, νS=O showed a decrease in intensity, especially in the hydrogen-bonded species of DMSO, which clearly shows that the solvation dynamics of DMSO, including hydrogen bonding, are crucial to understanding the reaction dynamics of AAQ with the ultrafast structural changes accompanying the TICT.
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2
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Cai L, Du H, Wang D, Lyu H, Wang D. Synthesis and photophysical properties of ditrifluoroacetoxyboron complexes with curcumin analogues. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119297. [PMID: 33341749 DOI: 10.1016/j.saa.2020.119297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/25/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
A new class of ditrifluoroacetoxyboron complexes were designed and synthesized by chelation reaction of curcumins with boron trifluoroacetate. Their photophysical behaviors were studied in different solvents, powder state and PMMA polymer films. The results indicated that these complexes revealed a green to yellow emission at 486-595 nm in solution or PMMA films and an orange to red emission at 598-710 nm in powder state. Especially, complex 2c displayed the strongest emission intensity, the highest quantum yield in solution and the longest fluorescence lifetime in powder state in these complexes. In addtion, the emission bathochromic shifts of these complexes as a function of the solvent polarity parameter ET(30) were investigated by Lippert-Mataga approximation. It was observed that these complexes exhibited the higher values of the dipole moment difference (Δμ) between the ground and excited states, which implied an intense intramolecular charge transfer characteristics and a noticeable emission solvatochromic effect.
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Affiliation(s)
- Lian Cai
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Hengyi Du
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Dan Wang
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Heng Lyu
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Dunjia Wang
- College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China.
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3
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Krawczyk P, Bratkowska M, Wybranowski T, Hołyńska-Iwan I, Cysewski P, Jędrzejewska B. Experimental and theoretical insight into spectroscopic properties and bioactivity of 4-(4-formylbenzylidene)-2-phenyloxazol-5(4H)-one dye for future applications in biochemistry. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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4
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Khan SA, Kumar P. Photophysical and Physicochemical Investigation of Newly Synthesized Polycyclic Pyrazoline-Benzothiazole as Fluorescence Chemosensor for the Detection of Cu2+ Metal Ion. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1607411] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Salman A. Khan
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Parveen Kumar
- Deparment of Chemistry, DAV College Faridabad, Faridabad, Haryana, India
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5
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Beşer BM, Onganer Y, Arik M. Photophysics and photodynamics of Pyronin Y in n-alcohols. LUMINESCENCE 2018; 33:1394-1400. [DOI: 10.1002/bio.3560] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/14/2018] [Accepted: 09/16/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Burcu Meryem Beşer
- Department of Chemistry; Erzincan Binali Yıldırım University; Erzincan Turkey
| | - Yavuz Onganer
- Department of Chemistry; Atatürk University; Erzurum Turkey
| | - Mustafa Arik
- Department of Chemistry; Atatürk University; Erzurum Turkey
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6
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Yin Q, Chen Y, Zhou M, Jiang X, Wu J, Sun Y. Synthesis and photophysical properties of deuteration of pirfenidone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 204:88-98. [PMID: 29908414 DOI: 10.1016/j.saa.2018.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
In order to improve the metabolism of pirfenidone (5-methyl-1-phenylpyridin-2-one, PFD), the methyl-deuterated version of pirfenidone via the substitution of hydrogen (H) at C-5 by its isotope deuterium (D, 5D-PFD) was synthesized and its photophysical properties were investigated. The negative solvatochrom was observed in absorption and fluorescence spectra with increasing solvent polarity, which implied that intermolecular charge transfer (ICT) involved n → π* transition for both of PFD and 5D-PFD. The ground state and excited state dipole moment was calculated as 5.30 D and 3.30 D for PFD, and 3.70 D and 2.18 D for 5D-PFD, respectively, which suggested the more polar nature of PFD in the ground state than that of excited state compared with 5D-PFD. Density functional theory (DFT) results demonstrated a significant propensity of ICT from the electron-donor, methyl and carbonyl group to the amine group as an electron donor. The binding of metal ions with PFD or 5D-PFD induced a red-shift of π → π* transition and blue-shift of n → π* transition, respectively, indicating that the pyridone ring showed more stability upon binding of unoccupied orbital of metal ions with lone-pair electron of oxygen atom and thus prompted the electronic distribution on phenyl unit. Upon addition of metal ions, the aromatic region presented the characteristic upfield shifts, and the resonance contributed by 3-H showed a significant downfield chemical shift/deshielding effect, indicating the deduced resonance of 3-H and the improved electron distribution of phenyl unit. The binding and docking of human serum albumin showed that the affinity of 5D-PFD with HSA was lower than that of PFD, and also 5D-PFD might prefer to present free forms in the blood with better efficacy comparing with PFD. The pharmacokinetic of half-time (T1/2) for oral and i.v. administration of 5D-PFD was found around 19 and 30 min, higher than that of i.v. administration of PFD, 8.6 min, reported by Giri et al. The results of this work suggest that the deuteration enhances the metabolism of PFD significantly with little change of physical-chemical property.
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Affiliation(s)
- Qiuju Yin
- School of Food Science and Technology·School of Chemical Engineering, Hubei University of Arts and Science, No. 296 Longzhong Road, Xiangyang, Hubei 441053, China
| | - Yujie Chen
- School of Food Science and Technology·School of Chemical Engineering, Hubei University of Arts and Science, No. 296 Longzhong Road, Xiangyang, Hubei 441053, China
| | - Meng Zhou
- School of Food Science and Technology·School of Chemical Engineering, Hubei University of Arts and Science, No. 296 Longzhong Road, Xiangyang, Hubei 441053, China
| | - Xiangsheng Jiang
- School of Food Science and Technology·School of Chemical Engineering, Hubei University of Arts and Science, No. 296 Longzhong Road, Xiangyang, Hubei 441053, China
| | - Junjun Wu
- School of Food Science and Technology·School of Chemical Engineering, Hubei University of Arts and Science, No. 296 Longzhong Road, Xiangyang, Hubei 441053, China
| | - Yang Sun
- School of Food Science and Technology·School of Chemical Engineering, Hubei University of Arts and Science, No. 296 Longzhong Road, Xiangyang, Hubei 441053, China; School of Life Sciences, Tsinghua University, Beijing 100084, China.
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Asiri AM, Sobahi TR, Al-Amari MM, Asad M, Zayed MEM, Khan SA. Physicochemical Investigation of HDDP Azomethine Dye as Turn-On Fluorescent Chemosensor for High Selectivity and Sensitivity of Al3+ Ions. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0805-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8
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Jędrzejewska B, Grabarz A, Bartkowiak W, Ośmiałowski B. Spectral and physicochemical properties of difluoroboranyls containing N,N-dimethylamino group studied by solvatochromic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:86-95. [PMID: 29573699 DOI: 10.1016/j.saa.2018.03.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/07/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The solvatochromism of the dyes was analyzed based on the four-parameter scale including: polarizability (SP), dipolarity (SdP), acidity (SA) and basicity (SB) parameters by method proposed by Catalán. The change of solvent to more polar caused the red shift of absorption and fluorescence band position. The frequency shifts manifest the change in the dipole moment upon excitation. The ground-state dipole moment of the difluoroboranyls was estimated based on changes in molecular polarization with temperature. Moreover, the Stokes shifts were used to calculate the excited state dipole moments of the dyes. For the calculation, the ground-state dipole moments and Onsager cavity radius were also determined theoretically using density functional theory (DFT). The experimentally determined excited-state dipole moments for the compounds are higher than the corresponding ground-state values. The increase in the dipole moment is described in terms of the nature of the excited state.
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Affiliation(s)
- Beata Jędrzejewska
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland.
| | - Anna Grabarz
- Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wroclaw, Poland
| | - Wojciech Bartkowiak
- Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wroclaw, Poland
| | - Borys Ośmiałowski
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Street, 87-100 Toruń, Poland.
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9
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Ermakova EV, Arslanov VV. Analytical micelles containing amphiphilic aminoanthraquinone solvatochromic reporter receptor. COLLOID JOURNAL 2017. [DOI: 10.1134/s1061933x17060060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Desai VR, Hunagund SM, Pujar MS, Basanagouda M, Kadadevarmath JS, Sidarai AH. Photophysical Properties of a Novel and Biologically Active 3(2H)-Pyridazinone Derivative Using Solvatochromic Approach. J Fluoresc 2017; 27:1793-1800. [PMID: 28580505 DOI: 10.1007/s10895-017-2117-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 05/14/2017] [Indexed: 10/19/2022]
Abstract
Herein, we report photophysical properties of a novel and biologically active 3(2H)-pyridazinone derivative 5-(4-chloro-2-hydoxy-phenyl)-2-phenyl-2H-pyridazin-3-one [CHP] molecule using solvatochromic approaches. Absorption and fluorescence spectra of CHP molecule have been measured at room temperature in various solvents of different polarities. From this, it is observed that the positions, intensities and shapes of the absorption and emission bands are usually modified. Experimentally, the ground and excited state dipole moments are estimated using solvatochromic shift method which involves Lippert's, Bakshiev's and Kawski-Chamma-Viallet's equations. Theoretically, the ground state dipole moment was estimated using the Gaussian-09 program. The value of ground state dipole moment estimated using experimental and theoretical methods are well correlated. This inference that the molecular geometry is taken for CHP molecule under theoretical and experimental methods are similar. Further, we observed that the excited state dipole moment (μ e ) is greater than the ground state dipole moment (μ g ) which indicates that the excited state is more polar than the ground state. Furthermore, we have estimated an angle between the ground and excited state dipole moments. In addition, we have estimated the fluorescence quantum yield of CHP molecule using Rhodamine B as a standard reference in different solvents.
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Affiliation(s)
- Vani R Desai
- Department of Studies in Physics, Karnatak University, Dharwad, Karnataka, 580003, India
| | | | - Malatesh S Pujar
- Department of Studies in Physics, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Mahantesha Basanagouda
- P. G. Department of Studies in Chemistry, K. L. E. Society's P. C. Jabin Science College, Hubli, Karnataka, 580031, India
| | | | - Ashok H Sidarai
- Department of Studies in Physics, Karnatak University, Dharwad, Karnataka, 580003, India.
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11
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Investigation of charge-separation/change in dipole moment of 7-azaindole: Quantitative measurement using solvatochromic shifts and computational approaches. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Spectroscopic Physicochemical and Photophysical Investigation of Biologically Active 2-oxo-quinoline-3-carbonitrile Derivative. J Fluoresc 2017; 27:853-860. [DOI: 10.1007/s10895-016-2021-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/29/2016] [Indexed: 12/25/2022]
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13
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Jędrzejewska B, Krawczyk P, Józefowicz M. Experimental and theoretical studies of the influence of solvent polarity on the spectral properties of two push-pull oxazol-5-(4H)-one compounds. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:258-267. [PMID: 27541798 DOI: 10.1016/j.saa.2016.08.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 07/07/2016] [Accepted: 08/05/2016] [Indexed: 06/06/2023]
Abstract
Spectral and photophysical properties of two derivatives of the 2-phenyl-1,3-oxazol-5(4H)-ones were studied in 17 solvents of different polarity. These compounds have either push-pull non-centrosymmetric or C3-symmetric structures with electron-withdrawing groups (2-phenyl-oxazolone) introduced onto the triphenylamine. It has been found that their spectral and photophysical properties depend on the structure of the compounds and on the solvent polarity. The non-radiative relaxation process is facilitated by an increase of the solvent polarity. The changes in the electronic absorption and fluorescence maximum positions with solvent polarity were analyzed applying different solvent polarity parameters based on Lippert-Mataga, McRae, Bakhshiev and Kawski theories or ETN scale. The long-wavelength absorption band positions exhibit a slight dependence on the solvent, whereas the fluorescence spectra demonstrate substantial positive solvatochromism. It was found that the position of the electronic absorption band depends mainly on the solute polarizability (related to the solvent refraction index function f(n2)=(n2-1)/(2n2+1)), whereas the solvent polarity influences the position of the fluorescence band. Quantum chemical calculations of the transition energies and dipole moments at the DFT level have been also performed. The difference between the first excited and ground state dipole moments was found experimentally to be 10.8 D and 13.0 D according to Bakhshiev's model. The experimental values of Δμ were compared to that one obtained from theoretical calculations for various solvents.
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Affiliation(s)
- Beata Jędrzejewska
- UTP University of Science and Technology, Faculty of Chemical Technology and Engineering, Seminaryjna 3, 85-326 Bydgoszcz, Poland.
| | - Przemysław Krawczyk
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Physical Chemistry, Kurpińskiego 5, 85-950 Bydgoszcz, Poland
| | - Marek Józefowicz
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, ul. Wita Stwosza 57, 80-952 Gdańsk, Poland
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14
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Mehata MS, Singh AK, Sinha RK. Experimental and theoretical study of hydroxyquinolines: hydroxyl group position dependent dipole moment and charge-separation in the photoexcited state leading to fluorescence. Methods Appl Fluoresc 2016; 4:045004. [PMID: 28192284 DOI: 10.1088/2050-6120/4/4/045004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Optical absorption and fluorescence (FL) spectra of 2-, 6-, 7-, 8-hydroxyquinolines (2-,6-,7- and 8-HQs) have been measured at room temperature in the wide range of solvents of different polarities, dielectric constant and refractive index. The ground state dipole moment (µ g) and excited state dipole moment (µ e) of 2-, 6-, 7- and 8-HQs were obtained using solvatochromic shift (SS) methods and microscopic solvent polarity parameters (MSPP). Change in the dipole moment (Δµ) between the ground and photo-excited states was estimated from SS and MSPP methods. DFT and TDDFT based theoretical calculations were performed for the ground and excited states dipole moments, and for vertical transitions. A significant enhancement in the excited state dipole moment was observed following photo-excitation. The large value of Δµ clearly indicates to the charge-separation in the photo-excited states, which in turn depends on the position of the hydroxyl group in the ring.
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Affiliation(s)
- Mohan Singh Mehata
- Laser-Spectroscopy Lab, Department of Applied Physics, Delhi Technological University, Bawana Road, Delhi 110042, India
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15
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Estimation of Ground-State and Singlet Excited-State Dipole Moments of Substituted Schiff Bases Containing Oxazolidin-2-one Moiety through Solvatochromic Methods. J Fluoresc 2016; 27:151-165. [PMID: 27704234 DOI: 10.1007/s10895-016-1942-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 09/21/2016] [Indexed: 10/20/2022]
Abstract
Absorption and fluorescence studies on novel Schiff bases (E)-4-(4-(4-nitro benzylideneamino)benzyl)oxazolidin-2-one (NBOA) and (E)-4-(4-(4-chlorobenzylidene amino)benzyl)oxazolidin-2-one (CBOA) were recorded in a series of twelve solvents upon increasing polarity at room temperature. Large Stokes shift indicates bathochromic fluorescence band for both the molecules. The photoluminescence properties of Schiff bases containing electron withdrawing and donating substituents were analyzed. Intramolecular charge transfer behavior can be studied based on the influence of different substituents in Schiff bases. Changes in position and intensity of absorption and fluorescence spectra are responsible for the stabilization of singlet excited-states of Schiff base molecules with different substituents, in polar solvents. This is attributed to the Intramolecular charge transfer (ICT) mechanism. In case of electron donating (-Cl) substituent, ICT contributes largely to positive solvatochromism when compared to electron withdrawing (-NO2) substituent. Ground-state and singlet excited-state dipole moments of NBOA and CBOA were calculated experimentally using solvent polarity function approaches given by Lippert-Mataga, Bakhshiev, Kawskii-Chamma-Viallet and Reichardt. Due to considerable π- electron density redistribution, singlet excited-state dipole moment was found to be greater than ground-state dipole moment. Ground-state dipole moment value which was determined by quantum chemical method was used to estimate excited-state dipole moment using solvatochromic correlations. Kamlet-Abboud-Taft and Catalan multiple linear regression approaches were used to study non-specific solute-solvent interaction and hydrogen bonding interactions in detail. Optimized geometry and HOMO-LUMO energies of NBOA and CBOA have been determined by DFT and TD-DFT/PCM (B3LYP/6-311G (d, p)). Mulliken charges and molecular electrostatic potential have also been evaluated from DFT calculations.
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16
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Photophysical study of 6-amino-3-methyl-4-(4-nitrophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile and estimation of ground-state and singlet excited-state dipole moments by solvatochromic approaches. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Solvent Effects on the Electronic Absorption and Fluorescence Spectra of HNP: Estimation of Ground and Excited State Dipole Moments. J Fluoresc 2016; 26:1391-400. [PMID: 27220623 DOI: 10.1007/s10895-016-1830-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 05/09/2016] [Indexed: 10/21/2022]
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18
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Thiaré D, Khonté A, Diop A, Cissé L, Coly A, Tine A, Delattre F. Determination of ground and excited state dipole moments of amino-benzimidazole by solvatochromic shift methods and theoretical calculations. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.07.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Belay A, Libnedengel E, Kim HK, Hwang YH. Effects of solvent polarity on the absorption and fluorescence spectra of chlorogenic acid and caffeic acid compounds: determination of the dipole moments. LUMINESCENCE 2015; 31:118-26. [PMID: 25991491 DOI: 10.1002/bio.2932] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/18/2015] [Accepted: 04/09/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Abebe Belay
- Department of Nanomaterial Engineering and Nanoconvergence Technology; Pusan National University; Miryang 627-706 Korea
- Department of Physics, School of Natural Sciences; Adama Science and Technology University; P.O. Box 1888 Adama Ethiopia
| | - Ermias Libnedengel
- Department of Nanomaterial Engineering and Nanoconvergence Technology; Pusan National University; Miryang 627-706 Korea
- Department of Physics, School of Natural Sciences; Adama Science and Technology University; P.O. Box 1888 Adama Ethiopia
| | - Hyung Kook Kim
- Department of Nanomaterial Engineering and Nanoconvergence Technology; Pusan National University; Miryang 627-706 Korea
| | - Yoon-Hwae Hwang
- Department of Nanomaterial Engineering and Nanoconvergence Technology; Pusan National University; Miryang 627-706 Korea
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Geethanjali HS, Nagaraja D, Melavanki RM. Estimation of Dipole Moments and Quantum Yield of 5-chloro-2-methoxyphenyl Boronic Acid in Different Solvents Environment. J Fluoresc 2015; 25:745-53. [PMID: 25820873 DOI: 10.1007/s10895-015-1561-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 03/16/2015] [Indexed: 11/30/2022]
Abstract
The Photophysical properties like ground state and excited state dipole moments, change in the dipole moment and fluorescence quantum yield of a boronic acid derivative 5-chloro-2-methoxy phenyl boronic acid (5CMPBA) are characterized. The study is carried out in various solvents at room temperature using absorption and steady-state fluorescence technique. The emission wavelength of 5CMPBA is quite sensitive to the polarity of solvents. With the increase in solvent polarity red shift or bathochromic shift of about 9 nm has been observed. The excited state and ground state dipole moments are estimated using solvatochromic shift method and effect of solvents on spectral properties of the molecule are investigated using Kamlet-Taft multiple linear regression approach. The changes in dipole moment (Δμ) are calculated both from solvatochromic shift method and microscopic solvent polarity parameter (E T (N) ), and the values are compared. The ground state dipole moment is also evaluated using quantum chemical calculations. The bathochromic shift of the emission spectra and the increase in the excited state dipole moment indicates π → π* transitions as well as the possibility of intramolecular charge transfer (ICT) character in the emitting singlet state of 5CMPBA. The relative quantum yield (Φ), radiative and non-radiative decay constants are calculated using single point method. It is found that the quantum yield of the molecule varies from 11 to 64% with the change in the solvent polarity indicating the dependency of fluorescence nature on the solvent environment.
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Affiliation(s)
- H S Geethanjali
- Department of Physics, Bangalore Institute of Technology, Bangalore, 560004, Karnataka, India
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21
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Karthik C, Manjuladevi V, Gupta RK, Kumar S. Solvatochromism of a tricycloquinazoline based disk-shaped liquid crystal: a potential molecular probe for fluorescence imaging. RSC Adv 2015. [DOI: 10.1039/c5ra14760c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluorescence microscopy images of a non-fluorescent discotic liquid crystal (DLC) using tricycloquinazoline (TCQ) based DLC as a molecular probe.
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Affiliation(s)
- C. Karthik
- Department of Physics
- Birla Institute of Technology and Science
- Pilani
- India
| | - V. Manjuladevi
- Department of Physics
- Birla Institute of Technology and Science
- Pilani
- India
| | - R. K. Gupta
- Department of Physics
- Birla Institute of Technology and Science
- Pilani
- India
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Garza AJ, Osman OI, Wazzan NA, Khan SB, Asiri AM, Scuseria GE. A computational study of the nonlinear optical properties of carbazole derivatives: theory refines experiment. Theor Chem Acc 2014. [DOI: 10.1007/s00214-014-1458-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Gülseven Sıdır Y, Sıdır I. Solvent effect on the absorption and fluorescence spectra of 7-acetoxy-6-(2,3-dibromopropyl)-4,8-dimethylcoumarin: determination of ground and excited state dipole moments. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 102:286-296. [PMID: 23220670 DOI: 10.1016/j.saa.2012.10.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 09/27/2012] [Accepted: 10/13/2012] [Indexed: 06/01/2023]
Abstract
The ground state (μ(g)) and excited state (μ(e)) dipole moments of 7-acetoxy-6-(2,3-dibromopropyl)-4,8-dimethylcoumarin (abbreviated as 7ADDC) are estimated from solvatochromic shifts of absorption and fluorescence spectra as a function of the dielectric constant (ε) and refractive index (n). While the ground state dipole moment is determined by using Bilot-Kawski method, the excited state dipole moment is calculated by using Bilot-Kawski, Lippert-Mataga, Bakhshiev, Kawski-Chamma-Viallet and Reichardt correlation methods. Excited state dipole moment is observed as larger than the ground state dipole moment due to substantial π-electron density redistribution. The ground state and excited state dipole moments are observed as parallel to each other with angle of 0°. Solute-solvent interactions are analyzed by means of linear solvation free energy relationships (LSER) using dielectric constant function (f(ε)), refractive index function (f(n)) and Kamlet-Taft parameters (α and β). Atomic charges, electron densities and molecular orbitals are calculated in vacuum and with solvent effect by using both DFT and TDDFT methods. Solvent accessible surface, molecular electrostatic potential (MEP) and electrostatic potential (ESP) are visualized as a result of DFT calculations.
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Affiliation(s)
- Yadigar Gülseven Sıdır
- Bitlis Eren University, Faculty of Arts & Science, Department of Physics, 13000 Bitlis, Turkey.
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24
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Fin A, Vargas Jentzsch A, Sakai N, Matile S. Oligothiophene Amphiphiles as Planarizable and Polarizable Fluorescent Membrane Probes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206446] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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25
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Fin A, Vargas Jentzsch A, Sakai N, Matile S. Oligothiophene Amphiphiles as Planarizable and Polarizable Fluorescent Membrane Probes. Angew Chem Int Ed Engl 2012; 51:12736-9. [DOI: 10.1002/anie.201206446] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 10/17/2012] [Indexed: 01/04/2023]
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26
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Husain MM, Sindhu R, Tandon HC. Determination of excited singlet-state dipole moments of hydroxy and methoxy coumarins using solvatochromic method. ACTA ACUST UNITED AC 2012. [DOI: 10.5155/eurjchem.3.1.75-80.498] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Ganguly B, Nath RK, Panda AK. Photophysical Studies of Erythrosin B Dye in Aqueous Micellar Dispersions of Different Surfactants and in Different Solvents. J DISPER SCI TECHNOL 2012. [DOI: 10.1080/01932691.2011.562432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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28
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Jacquemin D, Brémond E, Planchat A, Ciofini I, Adamo C. TD-DFT Vibronic Couplings in Anthraquinones: From Basis Set and Functional Benchmarks to Applications for Industrial Dyes. J Chem Theory Comput 2011; 7:1882-92. [DOI: 10.1021/ct200259k] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Denis Jacquemin
- Laboratoire CEISAM - UMR CNR 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Eric Brémond
- Ecole Nationale Supérieure de Chimie de Paris, Laboratoire LECIME, UMR CNRS-ENSCP no. 7575, 11, rue Pierre et Marie Curie, F-75321 Paris Cedex 05, France
| | - Aurélien Planchat
- Laboratoire CEISAM - UMR CNR 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Ilaria Ciofini
- Ecole Nationale Supérieure de Chimie de Paris, Laboratoire LECIME, UMR CNRS-ENSCP no. 7575, 11, rue Pierre et Marie Curie, F-75321 Paris Cedex 05, France
| | - Carlo Adamo
- Ecole Nationale Supérieure de Chimie de Paris, Laboratoire LECIME, UMR CNRS-ENSCP no. 7575, 11, rue Pierre et Marie Curie, F-75321 Paris Cedex 05, France
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29
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Molecular recognition of 1,5 diamino anthraquinone by p-tert-butyl-calix(8)arene. J Fluoresc 2010; 20:1017-22. [PMID: 20480215 DOI: 10.1007/s10895-010-0651-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Accepted: 03/24/2010] [Indexed: 10/19/2022]
Abstract
The molecular recognition properties of p-tert-butyl-calix(8)arene with 1,5 -diamino anthraquinone (1,5 DAAQ) were studied by using UV-Visible and Fluorescence spectroscopic techniques. The binding constant was determined by using the Benesi-Hilde brand expression. It was found that the host-guest complex was formed between 1,5 DAAQ and p-tert-butyl- calix(8)arene in the 1:2 Stoichiometry ratio.
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30
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Suganthi G, Sivakolunthu S, Ramakrishnan V. Solvatochromic and Preferential Solvation Studies on Schiff Base 1,4-Bis(((2-Methylthio)Phenylimino)Methyl) Benzene in Binary Liquid Mixtures. J Fluoresc 2010; 20:1181-9. [DOI: 10.1007/s10895-010-0666-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Accepted: 04/05/2010] [Indexed: 11/28/2022]
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31
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Siddlingeshwar B, Hanagodimath SM. Estimation of the ground and the first excited singlet-state dipole moments of 1,4-disubstituted anthraquinone dyes by the solvatochromic method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:1203-1210. [PMID: 20138571 DOI: 10.1016/j.saa.2009.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 11/21/2009] [Accepted: 12/01/2009] [Indexed: 05/28/2023]
Abstract
The both, ground-state (mu(g)) and the excited-state (mu(e)) dipole moments of three 1,4-disubstituted anthraquinones, namely 1,4-diaminoanthracene-9,10-dione (1,4-DAAQ), 1-amino-4-hydroxyanthracene-9,10-dione (1,4-AHAQ), and 1,4-dihydroxyanthracene-9,10-dione (1,4-DHAQ) were estimated in binary solvent mixtures (methylcyclohexane-ethyl acetate and ethyl acetate-acetonitrile). The dipole moments (mu(g) and mu(e)) were estimated from Lippert-Mataga, Bakhshiev, Kawski-Chamma-Viallet, McRae, and Suppan equations by using the variation of Stokes shift with the solvent's relative permittivity and refractive index. The ground-state dipole moments were also calculated theoretically by Gaussian 03 software using B3LYP/6-31 G* level of theory. Further, the change in dipole moment values Deltamu were also calculated by using the variation of Stokes shift with the molecular-microscopic empirical solvent polarity parameter (E(T)(N)). The excited-state dipole moments observed are larger than their ground-state counterparts, indicating a substantial redistribution of the pi-electron densities in a more polar excited state for all the molecules investigated.
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Affiliation(s)
- B Siddlingeshwar
- Department of Physics, Gulbarga University, Jnana Ganga, Gulbarga 585106, Karnataka, India
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32
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Józefowicz M, Milart P, Heldt JR. Determination of ground and excited state dipole moments of 4,5'-diamino[1,1':3',1''-terphenyl]-4',6'-dicarbonitrile using solvatochromic method and quantum-chemical calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 74:959-963. [PMID: 19782635 DOI: 10.1016/j.saa.2009.08.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Revised: 08/24/2009] [Accepted: 08/26/2009] [Indexed: 05/28/2023]
Abstract
Electronic absorption and fluorescence spectra of 4,5'-diamino[1,1':3',1''-terphenyl]-4',6'-dicarbonitrile (1) were recorded at room temperature in several solvents of different polarity. The results of spectroscopic measurements are analyzed using the theory of solvatochromism, based on a dielectric continuum description of the solvent and the classical Onsager cavity model. The difference in the excited and ground state dipole moments (mu(e)-mu(g)) of the molecule under study was estimated using methods applied by Bayliss, Ooshika, McRae, Lippert, Mataga, Bakhshiev and Kawski. Finally, the influence of polarizability on the determined change of the dipole moment was discussed. Austin model 1 (AM1) semiempirical molecular calculations were carried out to estimate the ground state dipole moment.
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Affiliation(s)
- Marek Józefowicz
- Institute of Experimental Physics, University of Gdańsk, ul. Wita Stwosza 57, 80-952 Gdańsk, Poland.
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Evale BG, Hanagodimath SM, Khan IA, Kulkarni MV. Estimation of dipole moments of some biologically active coumarins by solvatochromic shift method based on solvent polarity parameter, E(T)(N). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 73:694-700. [PMID: 19410501 DOI: 10.1016/j.saa.2009.03.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 03/05/2009] [Accepted: 03/18/2009] [Indexed: 05/27/2023]
Abstract
The electronic absorption and fluorescence spectra of three newly synthesized coumarin derivatives viz., 4-(5-methyl-3-furan-2-yl-benzofuran-2-yl)-7-methyl-chromen-2-one (MFBMC), 4-(5-chloro-3-furan-2-yl-benzofuran-2-yl)-6-methyl-chromen-2-one (ClFBMC) and 4-(5-methyl-3-phenyl-benzofuran-2-yl)-6-chloro-chromen-2-one (MPBClC) have been recorded at room temperature (296 K) in solvents of different polarities. The effects of the solvents upon the spectral properties are discussed. Solvatochromic correlations were used to estimate the ground-state (mu(g)) and excited-state (mu(e)) dipole moments. The excited-state dipole moments for all the three molecules are found to be larger than their corresponding ground-state dipole moments. Further, the changes in dipole moment (Delta mu) were calculated both from solvatochromic shift method and on the basis of microscopic empirical solvent polarity parameter (E(T)(N)), and the values are compared.
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Affiliation(s)
- Basavaraj G Evale
- Department of Physics, Gulbarga University, Gulbarga 585 106, Karnataka, India
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