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Lee S, Kim H, Jeong Y. Angular distribution of luminescence dissymmetry observed from a random laser built upon the exocuticle of the scarab beetle Chrysina gloriosa. OPTICS EXPRESS 2021; 29:37712-37721. [PMID: 34808838 DOI: 10.1364/oe.438697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
We investigate the angular distribution of luminescence dissymmetry of random lasing in the mixture of rhodamine 6G and titanium dioxide nanoparticles upon a biocompatible natural material substrate, i.e., the elytron of the scarab beetle Chrysina gloriosa. We look into both green and gold-colored areas of the elytron that exhibit distinctly different circular dichroism properties. The fabricated sample asymmetrically emits both left- and right-handed circularly polarized light at 570 nm when pumped at 532 nm, depending on the direction of emission and the angle of the pump incidence. We characterize the light via measuring the angular distribution of its luminescence dissymmetry factor (g lum), which reaches an unusually high maximal value of 0.90 or -0.50 at some specific angle depending on the handedness of its polarization. This random laser source can be used in numerous potential optoelectronic applications which require light emission of distributed luminescence dissymmetry or of high luminescence dissymmetry.
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Sousa MO, Vargas MD, Miranda FS. Theoretical investigation of the photophysical properties of donor-acceptor dyes containing coumarin and naphthoquinone moieties linked by an aminomethylene bridge. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Singh R, Kaur P, Sachdeva R, Grewal JS, Sathe V, Saini G. Computational study of effect of solvents on vibrational spectra of coumarin 500. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Shinde RG, Khan AA, Barik A. Colorimetric and fluorescence signalling of thioesculetin in presence of oxidising agent. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1440-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5
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Shivraj, Thomas A, Siddlingeshwar B, Patil SB. A combined spectroscopic and TDDFT investigation of the solute‐solvent interactions of two coumarin derivatives. LUMINESCENCE 2017; 32:1328-1338. [DOI: 10.1002/bio.3329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 02/03/2017] [Accepted: 03/05/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Shivraj
- Department of Physics M S Ramaiah Institute of Technology Bengaluru India
| | - Anup Thomas
- Center for Computational Research in Clean Energy Technologies Sree Chitra Thirunal College of Engineering Pappanamcode Trivandrum India
| | - B. Siddlingeshwar
- Department of Physics M S Ramaiah Institute of Technology Bengaluru India
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Xu J, Chen J, Dong S, Fu A, Li H, Chu T. Excited-state hydrogen bond strengthening of coumarin 153 in ethanol solvent: a TDDFT study. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3537] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jinmei Xu
- College of Information Science and Engineering; Ocean University of China; Qingdao 266100 China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Junsheng Chen
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Shunle Dong
- College of Information Science and Engineering; Ocean University of China; Qingdao 266100 China
| | - Aiping Fu
- Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory and College of Physics, College of Chemistry; Qingdao University; Qingdao 266071 People's Republic of China
| | - Hongliang Li
- Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory and College of Physics, College of Chemistry; Qingdao University; Qingdao 266071 People's Republic of China
| | - Tianshu Chu
- Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory and College of Physics, College of Chemistry; Qingdao University; Qingdao 266071 People's Republic of China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
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Cong L, Yin H, Shi Y, Jin M, Ding D. Different mechanisms of ultrafast excited state deactivation of coumarin 500 in dioxane and methanol solvents: experimental and theoretical study. RSC Adv 2015. [DOI: 10.1039/c4ra09773d] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of hydrogen bonding on the intermolecular photoinduced ICT and TICT processes for coumarin 500 has been demonstrated, and a reliable mechanism has been revealed to explain the unusual behavior of C500 in dioxane and methanol.
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Affiliation(s)
- Lin Cong
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Hang Yin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Ying Shi
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Mingxing Jin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Dajun Ding
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
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Maity B, Chatterjee A, Seth D. The photophysics of 7-(diethylamino)coumarin-3-carboxylic acid N-succinimidyl ester in reverse micelle: excitation wavelength dependent dynamics. RSC Adv 2014. [DOI: 10.1039/c3ra44240c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Datta P, Sardar D, Saha R, Mondal TK, Sinha C. Structure, photophysics, electrochemistry and DFT calculations of [RuH(CO)(PPh3)2(coumarinyl-azo-imidazole)]. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.01.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Helal A, Or Rashid MH, Choi CH, Kim HS. Chromogenic and fluorogenic sensing of Cu2+ based on coumarin. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.01.093] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Murakami M, Ohkubo K, Nanjo T, Souma K, Suzuki N, Fukuzumi S. Photoinduced Electron Transfer in Photorobust Coumarins Linked with Electron Donors Affording Long Lifetimes of Triplet Charge-Separated States. Chemphyschem 2010; 11:2594-605. [DOI: 10.1002/cphc.201000096] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Aono S, Minezawa N, Kato S. Electronic spectra of coumarin-151 in polar solvents: Linear response free energy approach. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.04.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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El-Daly S, El-Hallag I. Photophysical Parameters, Photodecomposition, Fluorescence Quenching and Convolutive Voltammetry of 7-Diethylaminocoumarin (DEAC) Laser Dye. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2010. [DOI: 10.5012/jkcs.2010.54.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Satpati AK, Kumbhakar M, Nath S, Pal H. Photophysical Properties of Coumarin-7 Dye: Role of Twisted Intramolecular Charge Transfer State in High Polarity Protic Solvents. Photochem Photobiol 2009; 85:119-29. [DOI: 10.1111/j.1751-1097.2008.00405.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Xu B, Yang J, Jiang X, Wang Y, Sun H, Yin J. Ground and excited states calculations of 7-phenylamino-substituted coumarins. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.06.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Samsonova LG, Selivanov NI, Gadirov RM, Ishchenko VV, Khilya OV. Experimental and quantum-chemical studies of the 3-pyridine-7-hydroxy-2-iminocoumarin and 3-(2-methylthiazole)-7-hydroxy-2-iminocoumarin molecules. J STRUCT CHEM+ 2007. [DOI: 10.1007/s10947-007-0119-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Senthilkumar S, Nath S, Pal H. Photophysical Properties of Coumarin-30 Dye in Aprotic and Protic Solvents of Varying Polarities¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2004.tb00056.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Satpati A, Senthilkumar S, Kumbhakar M, Nath S, Maity DK, Pal H. Investigations of the Solvent Polarity Effect on the Photophysical Properties of Coumarin-7 Dye¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2005.tb00184.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mashraqui SH, Mistry H, Sundaram S. π-Aryl/heteroaryl conjugated coumarin-thiazoles: Synthesis, optical spectral and nonlinear optic properties. J Heterocycl Chem 2006. [DOI: 10.1002/jhet.5570430416] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Effect of protic solvents on twisted intramolecular charge transfer state formation in coumarin-152 and coumarin-481 dyes. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.08.051] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Barik A, Kumbhakar M, Nath S, Pal H. Evidence for the TICT mediated nonradiative deexcitation process for the excited coumarin-1 dye in high polarity protic solvents. Chem Phys 2005. [DOI: 10.1016/j.chemphys.2005.04.018] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Satpati A, Senthilkumar S, Kumbhakar M, Nath S, Maity DK, Pal H. Investigations of the Solvent Polarity Effect on the Photophysicalt Properties of Coumarin-7 Dye¶. Photochem Photobiol 2005; 81:270-8. [PMID: 15942988 DOI: 10.1562/2004-11-09-ra-368.1] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Photophysical investigations of coumarin-7 (C7) dye in different solvents using absorption, steady-state fluorescence and time-resolved fluorescence measurements reveal the behavioral changes of the dye in nonpolar and other solvents. In moderate to higher polarity solvents, the experimental parameters such as fluorescence quantum yield (Phif), fluorescence lifetime (tauf), radiative rate constant (k(f)), nonradiative rate constant (k(nr)) and Stokes' shift (Deltav) follow almost linear correlations with the Lippert-Mataga solvent polarity parameter Deltaf but show unusual deviations in nonpolar solvents. From the observed results, it is inferred that the dye exists in a planar intramolecular charge transfer structure in moderate to higher polarity solvents, but in nonpolar solvents, the dye exists in a nonplanar structure with its 7-NEt2 group adopting a pyramidal type of configuration. Unlike some of the other coumarin dyes, namely coumarin-120 (C120) (4-CH3-7-NH2-1,2-benzopyrone) and coumarin-151 (C151) 4-CF3-7-NH2-1,2-benzopyrone), which also show similar structural changes in nonpolar and other solvents, the C7 dye does not show any activation-controlled deexcitation process in nonpolar solvents. This is attributed to the very slow flip-flop motion of the 7-NEt2 group of the C7 dye in comparison with the very fast flip-flop motion of the 7-NH2 group in the C120 and C151 dyes. Qualitative potential energy diagrams are presented to rationalize the observed results of C7 dye and to compare these with those of the other dyes such as C120 and C151. A support for the observed results and interpretation has also been obtained from quantum chemical calculations on the structures of the C7 dye.
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Affiliation(s)
- Ashish Satpati
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
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Senthilkumar S, Nath S, Pal H. Photophysical Properties of Coumarin-30 Dye in Aprotic and Protic Solvents of Varying Polarities¶. Photochem Photobiol 2004; 80:104-11. [PMID: 15339222 DOI: 10.1562/2004-03-19-ra-119.1] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Experimental results on various photophysical properties of coumarin-30 (C30) dye, namely, Stokes' shift (Deltanu), fluorescence quantum yield (Phi(f)), fluorescence lifetime (tau(f)), radiative rate constant (k(f)) and nonradiative rate constant (k(nr)), as obtained using absorption and fluorescence measurements have been reported. Though in most of the solvents the properties of C30 show more or less linear correlation with the solvent polarity function, Deltaf = [(epsilon - 1)/(2epsilon + 1) - (n(2) - 1)/(2n(2) + 1)], they show unusual deviations in nonpolar solvents at one end and in high-polarity protic solvents at the other end. From the solvent polarity and temperature effect on the photophysical properties of the dye, following inferences have been drawn: (1) in nonpolar solvents, the dye exists in a nonpolar structure, where its 7-NEt(2) substituent adopts a pyramidal configuration and the amino lone pair is out of resonance with the benzopyrone pi cloud; (2) in medium to higher polarity solvents, the dye exists in a polar intramolecular charge transfer structure, where the 7-NEt(2) group and the 1,2-benzopyrone moiety are in the same plane and the amino lone pair is in resonance with the benzopyrone pi cloud; (3) in protic solvents, the dye-solvent intermolecular hydrogen bonding influences the photophysical properties of the dye; and (4) in high-polarity protic solvents, the excited C30 undergoes a new activation-controlled nonradiative deexcitation process because of the involvement of a twisted intramolecular charge transfer (TICT) state. Contrary to most other TICT molecules, the activation barrier for this deexcitation process in C30 is observed to increase with solvent polarity. A rational for this unusual behavior has been given on the basis of the solvent polarity-dependent stabilization and crossing of relevant electronic states and the relative propensity of interconversion among these states.
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Affiliation(s)
- Sadasivam Senthilkumar
- Department of Chemistry, Faculty of Engineering, PSG College of Technology, Coimbatore, India
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Barik A, Nath S, Pal H. Effect of solvent polarity on the photophysical properties of coumarin-1 dye. J Chem Phys 2003. [DOI: 10.1063/1.1619933] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pal H, Nad S, Kumbhakar M. Photophysical properties of coumarin-120: Unusual behavior in nonpolar solvents. J Chem Phys 2003. [DOI: 10.1063/1.1578057] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Nad S, Kumbhakar M, Pal H. Photophysical Properties of Coumarin-152 and Coumarin-481 Dyes: Unusual Behavior in Nonpolar and in Higher Polarity Solvents. J Phys Chem A 2003. [DOI: 10.1021/jp021543t] [Citation(s) in RCA: 202] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sanjukta Nad
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Manoj Kumbhakar
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Haridas Pal
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Chaichi MJ, Karami AR, Shockravi A, Shamsipur M. Chemiluminescence characteristics of cumarin derivatives as blue fluorescers in peroxyoxalate-hydrogen peroxide system. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2003; 59:1145-1150. [PMID: 12659882 DOI: 10.1016/s1386-1425(02)00311-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The chemiluminescence characteristics of seven different cumarin derivatives were studied in detail. The fluorescence and chemiluminescence spectra were compared; all cumarins used were found to act as blue fluorescers. The intensity and kinetic parameters for the chemiluminescent systems were evaluated from computer fitting of the resulting intensity-time plots. Among different cumarin derivatives used, 7-amino-4-trifluoromethylcumarin revealed the most promising characteristics as an efficient blue fluorescent emitter.
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Shamsipur M, Chaichi MJ. Quenching effect of dl(±)α-methylbenzylamine on peroxyoxalate chemiluminescence of 7-amino-4-trifluoromethylcumarin. J Photochem Photobiol A Chem 2003. [DOI: 10.1016/s1010-6030(02)00361-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Nad S, Pal H. Photophysical Properties of Coumarin-500 (C500): Unusual Behavior in Nonpolar Solvents. J Phys Chem A 2003. [DOI: 10.1021/jp021141l] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sanjukta Nad
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Haridas Pal
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Nad S, Pal H. Reduced Radical Characteristics of 7-Aminocoumarin Dyes Studied by Pulse Radiolysis Technique. J Phys Chem A 2002. [DOI: 10.1021/jp0203200] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sanjukta Nad
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Haridas Pal
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Shamsipur M, Chaichi MJ. Quenching effect of triethylamine on peroxyoxalate chemiluminescence in the presence of 7-amino-4-trifluoromethylcumarin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2001; 57:2355-2358. [PMID: 11767829 DOI: 10.1016/s1386-1425(01)00396-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The quenching effect of triethylamine on strong chemiluminescence of bis-(2,4,6-trichlorophenyl)oxalate-hydrogen peroxide system in the presence of 7-amino-4-trifluoromethylcumarin was studied. The system resulted in a nice Stern-Volmer plot with a kQ value of 1.07 x 10(-3) M(-1), in the quencher concentration range of 1.52 x 10(-4) - 1.36 x 10(-3) M. The linear correlation between the decay rate constant of the resulting chemiluminescence and the quencher concentration was also investigated.
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Affiliation(s)
- M Shamsipur
- Department of Chemistry, Razi University, Kermanshah, Iran.
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Affiliation(s)
- Sanjukta Nad
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Haridas Pal
- Radiation Chemistry and Chemical Dynamics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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Fluorescent 2,7-Dialkylamino-[1,8]-Naphthyridines: Preparation and Spectroscopic Properties. Molecules 1999. [DOI: 10.3390/41000264] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ramalingam A, Vijila C. A study of spectral and gain characteristics of substituted amino coumarins under nitrogen laser excitation. J Mol Liq 1999. [DOI: 10.1016/s0167-7322(99)00054-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Electro-optical and laser spectrofluorimetry study of coumarins 7 and 30: evidence for the existence of the close-lying electronic states and conformers. J Photochem Photobiol A Chem 1997. [DOI: 10.1016/s1010-6030(97)00133-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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38
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Yang JR, Langmuir ME. Synthesis and properties of a maleimide fluorescent thiol reagent derived from a naphthopyranone. J Heterocycl Chem 1991. [DOI: 10.1002/jhet.5570280503] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Chaurasia CS, Kauffman JM. Synthesis and fluorescent properties of a new photostable thiol reagent “BACM”. J Heterocycl Chem 1990. [DOI: 10.1002/jhet.5570270347] [Citation(s) in RCA: 20] [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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Fletcher AN, Pietrak ME, Bliss DE. Laser dye stability, part 11. The fluorinated azacoumarin dyes. ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf00694814] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fletcher AN, Pietrak ME. Laser dye stability, part 10. Effects of DABCO on flashlamp pumping of coumarin dyes. ACTA ACUST UNITED AC 1985. [DOI: 10.1007/bf00692078] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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46
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47
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48
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Abstract
Laser dyes are organic chemicals whose systematic names are lengthy and confusing. Other names-some jargon, some trade-have come into everyday use, but there is no consistency, and sometimes research workers will have dyes from different suppliers that are identical in structure although different in name. This paper tabulates laser dyes by a characteristic identification number.
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