1
|
Chaudhran PA, Sharma A. Progress in the Development of Imidazopyridine-Based Fluorescent Probes for Diverse Applications. Crit Rev Anal Chem 2022:1-18. [PMID: 36562726 DOI: 10.1080/10408347.2022.2158720] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Different classes of Imidazopyridine i.e., Imidazo[1,2-a]pyridine, Imidazo[1,5-a] pyridine, Imidazo[4,5-b]pyridine, have shown versatile applications in various fields. In this review, we have concisely presented the usefulness of the fluorescent property of imidazopyridine in different fields such as imaging tools, optoelectronics, metal ion detection, etc. Fluorescence mechanisms such as excited state intramolecular proton transfer, photoinduced electron transfer, fluorescence resonance energy transfer, intramolecular charge transfer, etc. are incorporated in the designed fluorophore to make it for fluorescent applications. It has been widely employed for metal ion detection, where selective metal ion detection is possible with triazole-attached imidazopyridine, β-carboline imidazopyridine hybrid, quinoline conjugated imidazopyridine, and many more. Also, other popular applications involve organic light emitting diodes and cell imaging. This review shed a light on recent development in this area especially focusing on the optical properties of the molecules with their usage which would be helpful in designing application-based new imidazopyridine derivatives.
Collapse
Affiliation(s)
- Preeti AshokKumar Chaudhran
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli, Uttar Pradesh, India
| | - Abha Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli, Uttar Pradesh, India
| |
Collapse
|
2
|
Carneiro LM, Keppler AF, Ferreira FF, Homem-de-Mello P, Bartoloni FH. Mechanisms for the Deactivation of the Electronic Excited States of α-(2-Hydroxyphenyl)- N-phenylnitrone: From Intramolecular Proton and Charge Transfer to Structure Twisting and Aggregation. J Phys Chem B 2022; 126:7373-7384. [DOI: 10.1021/acs.jpcb.2c03924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leonardo Martins Carneiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Artur Franz Keppler
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Fabio Furlan Ferreira
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Paula Homem-de-Mello
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Fernando Heering Bartoloni
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| |
Collapse
|
3
|
Behura R, Dash PP, Mohanty P, Behera S, Mohanty M, Dinda R, Behera SK, Barick AK, Jali BR. A Schiff base luminescent chemosensor for selective detection of Zn2+ in aqueous medium. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
4
|
Synthesis and photophysical behavior of fluorescent benzazole dyes and fluorescent microparticles: Their use as fingerprint developer. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
5
|
The suppression of intramolecular charge transfer emission by tautomerism in 2-(4′-amino-2′-hydroxyphenyl)-1H-imidazo-[4,5-c]pyridine: Intramolecular proton transfer versus intermolecular proton transfer. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
6
|
Das M, Brahma M, Krishnamoorthy G. Light-Driven Switching between Intramolecular Proton-Transfer and Charge-Transfer States. J Phys Chem B 2021; 125:2339-2350. [PMID: 33646785 DOI: 10.1021/acs.jpcb.0c09705] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A molecular photoswitch, 2-(4'-diethylamino-2'-hydroxyphenyl)-1H-imidazo-[4,5-b]pyridine (DHP), with mutually independent paths of excited-state intramolecular proton transfer (ESIPT) and twisted intramolecular charge transfer (TICT) was developed. Control over these processes was attained by switching the solvents. Depending on the solvent's hydrogen-bond capacity and polarity, either one of the photoprocesses (ESIPT or TICT) or both can be triggered. Accordingly, normal and tautomer emissions, normal and TICT emissions, or triple emission of normal, tautomer, and TICT were obtained from the molecule. The emissions were resolved by fluorescence lifetime. The conclusions were established by synthesizing and studying the methoxy derivative of the molecule.
Collapse
Affiliation(s)
- Minati Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Mongoli Brahma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - G Krishnamoorthy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| |
Collapse
|
7
|
Ayare NN, Gupta PO, Sreenath MC, Chitrambalam S, Joe IH, Sekar N. NLOphoric imidazole-fused fluorescent anthraquinone dyes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:119017. [PMID: 33045481 DOI: 10.1016/j.saa.2020.119017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
The Z-scan and DFT techniques were explored to investigate the non-linear optical properties of anthraquinone fused imidazole-based D-π-A dyes. With the help of UV-visible spectral analysis, pH study, CV analysis, HOMO-LUMO interaction, MEP plots, and quinoidal character the influence of intramolecular charge transfer characteristics and H-bonding process on electronic and photophysical studies of anthraquinone derivatives were understood. The dyes 2-(4-(diethylamino)-2-hydroxyphenyl)-3H-anthra[1,2-d]imidazole-6,11-dione (AQ1) and 2-(2-hydroxynaphthalen-1-yl)-1H-anthra[1,2-d]imidazole-6,11-dione (AQ2) displayed a single emission with pronounced Stokes shift and thermal stability (upto 290 °C). The dye AQ1 exhibited strong charge transfer character which is explained by the ICT process leading to high nonlinear susceptibility χ(3) in AQ1 3.43 × 10-13 e.s.u relative to the dye AQ2 which has only ESIPT core. But, the dye AQ2 6.27 J cm-2 showed better optical limiting value. The NLO properties of AQ1 and AQ2 were computed by DFT functionals based on Hartree Fork (HF) percentage exchange. The dye AQ1 exhibits noticeable NLO properties. The global hybrid functionals with HF composition beyond 50% (BHHLYP, M06-HF) and the long rang corrected functionals (CAM-B3LYP, ωB97, and ωB97X) demonstrated comparable NLO properties relative to B3LYP and PBE0. It was observed that the combined effect of ICT and the H-bonding cores enhance the NLO properties. The experimental findings (Z-scan) were successfully correlated with theoretical (DFT) results.
Collapse
Affiliation(s)
- Nitesh N Ayare
- Dyestuff Technology Department, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Puja O Gupta
- Dyestuff Technology Department, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Mavila C Sreenath
- Centre for Molecular and Biophysics Research, Department of Physics, Mar Ivanios College, Thiruvananthapuram, Kerala 695015, India
| | - Subramaniyan Chitrambalam
- Centre for Molecular and Biophysics Research, Department of Physics, Mar Ivanios College, Thiruvananthapuram, Kerala 695015, India
| | - Isaac H Joe
- University of Kerala, Kariavattom, Trivandrum, 695581, Kerala, India
| | - Nagaiyan Sekar
- Dyestuff Technology Department, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India.
| |
Collapse
|
8
|
Ila RD, Verma SP, Krishnamoorthy G. The origin of the longer wavelength emission in 2-(4-fluorophenylamino)-5-(2,4-dihydroxybenzeno)-1,3,4-thiadiazole and its analogue 2-phenylamino-5-(2-hydroxybenzono)-1,3,4-thiadiazole† ‡. Photochem Photobiol Sci 2020; 19:844-853. [PMID: 33856680 DOI: 10.1039/c9pp00490d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/26/2020] [Indexed: 05/18/2024]
Abstract
In aqueous solution, 2-(4-fluorophenylamino)-5-(2,4-dihydroxybenzeno)-1,3,4-thiadiazole (FABT) was found to emit dual emission and the longer wavelength emission was assigned to the combination of aggregation and conformational change. In a number of molecules that possess an intramolecular hydrogen bond between the proton donor and the acceptor, the longer wavelength emission is often observed due to the emission from the tautomer formed by excited state intramolecular proton transfer (ESIPT). Therefore, an analogue of FABT, 2-phenylamino-5-(2-hydroxybenzono)-1,3,4-thiadiazole (PHBT), was synthesized to determine the origin of the longer wavelength emission. The luminescence of PHBT and its methoxy derivatives was studied and compared with that of FABT. Theoretical calculations were also performed on both FABT and PHBT. Based on the experimental and theoretical investigations, the nonexistence of the keto tautomer in the ground state and the origin of the longer wavelength emission are divulged.
Collapse
Affiliation(s)
- Reshmi Dani Ila
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Surya Pratap Verma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - G Krishnamoorthy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
| |
Collapse
|
9
|
Selective Synthesis and Photoluminescence Study of Pyrazolopyridopyridazine Diones and N-Aminopyrazolopyrrolopyridine Diones. Molecules 2020; 25:molecules25102409. [PMID: 32455824 PMCID: PMC7288053 DOI: 10.3390/molecules25102409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 11/16/2022] Open
Abstract
The newly designed luminol structures of pyrazolopyridopyridazine diones and N-aminopyrazolopyrrolopyridine diones were synthesized from versatile 1,3-diaryfuropyrazolopyridine-6,8-diones, 1,3-diarylpyrazolopyrrolopyridine-6,8-diones, or 1,3-diaryl-7-methylpyrazolopyrrolopyridine-6,8-diones with hydrazine monohydrate. Photoluminescent and solvatofluorism properties containing UV–Vis absorption, emission spectra, and quantum yield (Φf) study of pyrazolopyridopyridazine diones and N-aminopyrazolopyrrolopyridine diones were also studied. Generally, most of pyrazolopyrrolopyridine-6,8-diones 6 exhibited the significant fluorescence intensity and the substituent effect when compared with N-aminopyrazolopyrrolopyridine diones, particularly for 6c and 6j with a m-chloro group. Additionally, the fluorescence intensity of 6j was significantly promoted due to the suitable conjugation conformation. Based on the quantum yield (Φf) study, the value of compound 6j (0.140) with planar structural skeletal was similar to that of standard luminol (1, 0.175).
Collapse
|
10
|
Purohit AK, Behera SK, Kar PK. A terpyridine luminophore: Synthesis, photophysics and selective metal ion–Mediated hydrogelation. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127568] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
11
|
Liu S, Zhao Y, Zhang C, Lin L, Li Y, Song Y. The novel excited state intramolecular proton transfer broken by intermolecular hydrogen bonds in HOF system. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:164-172. [PMID: 31035126 DOI: 10.1016/j.saa.2019.04.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/13/2019] [Accepted: 04/19/2019] [Indexed: 06/09/2023]
Abstract
2-(4-(Dimethylamino)phenyl)-3-hydroxy-6,7-dimethoxy-4Hchromen-4-one (HOF) was synthesized in experiment (Wang et al., Sensor. Actuat. B-Chem. 277 (2018) 484), and its photophysical and photochemical properties was reported. However the corresponding full theoretical interpretation of mechanisms is inadequate. In the present research, the intermolecular hydrogen bond structure of HOF-methanol complex (HOF-2M) was found, and mechanism of alcohols monitoring of HOF was deeply studied using the density functional theory (DFT) and time-dependent density functional theory (TDDFT). The enhancing mechanism of the excited state hydrogen bond is verified by analyzing the hydrogen bond parameters, infrared spectra and frontier molecular orbitals. Importantly, the reduced density gradient visual analysis and topological quantificational analysis confirm that the intramolecular hydrogen bond of HOF is broken by strong intermolecular hydrogen bonds of HOF-2M using the Atoms-In-Molecule theory. The obtained absorption and emission spectra are found to agree well with the experimental results and the complete quenched keto-emission in methanol and ethanol solvents provide a suitable sensing mechanism for detecting alcohols. The reaction path of the excited state intramolecular proton transfer for HOF is explained in detail through the constructed potential energy curves.
Collapse
Affiliation(s)
- Songsong Liu
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Yu Zhao
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; Department of Physics, Liaoning University, Shenyang 110036, China
| | - Changzhe Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Lili Lin
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Yongqing Li
- Department of Physics, Liaoning University, Shenyang 110036, China.
| | - Yuzhi Song
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| |
Collapse
|
12
|
Exploration of the ESIPT process in a newly designed potential bioactive thiosemicarbazone Schiff base: Spectroscopic analysis accompanied by molecular optimization and crystallographic study. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
13
|
Tang Z, Lu M, Liu K, Zhao Y, Qi Y, Wang Y, Zhang P, Zhou P. Solvation effect on the ESIPT mechanism of 2-(4′-amino-2′-hydroxyphenyl)-1H-imidazo-[4,5-c]pyridine. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
14
|
Santhiya K, Sen SK, Natarajan R, Shankar R, Murugesapandian B. D–A–D Structured Bis-acylhydrazone Exhibiting Aggregation-Induced Emission, Mechanochromic Luminescence, and Al(III) Detection. J Org Chem 2018; 83:10770-10775. [DOI: 10.1021/acs.joc.8b01377] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kuppusamy Santhiya
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India
| | - Shovan K. Sen
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Ramalingam Natarajan
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Ramasamy Shankar
- Department of Physics, Bharathiar University, Coimbatore 641 046, India
| | | |
Collapse
|
15
|
Satapathy AK, Behera SK, Kumar R, Sandhya K, Yelamaggad C, Sahoo B. Excited state intramolecular proton transfer emission in bent core liquid crystals. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
16
|
Kothavale S, Sekar N. A New Series of Highly Fluorescent Blue-Green Emitting, Imidazole-Based ICT-ESIPT Compounds: Detail Experimental and DFT Study of Structural and Donating Group Effects on Fluorescence Properties. ChemistrySelect 2017. [DOI: 10.1002/slct.201700537] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shantaram Kothavale
- Department of Dyestuff Technology; Institute of Chemical Technology, Matunga; Mumbai India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology; Institute of Chemical Technology, Matunga; Mumbai India
| |
Collapse
|
17
|
Kothavale S, Erande Y, Sekar N. Triphenylamine-Based Bis- and Tris-ESIPT Compounds and Their Boron Complexes: Synthesis, Photophysical Properties and DFT Study of ICT and ESIPT Emissions. ChemistrySelect 2017. [DOI: 10.1002/slct.201700468] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shantaram Kothavale
- Department of Dyestuff Technology; Institute of Chemical Technology; Matunga, Mumbai India
| | - Yogesh Erande
- Department of Dyestuff Technology; Institute of Chemical Technology; Matunga, Mumbai India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology; Institute of Chemical Technology; Matunga, Mumbai India
| |
Collapse
|
18
|
Substituent Modulation from ESIPT to ICT Emission in Benzoimidazolphenyl-methanones Derivatives: Synthesis, Photophysical and DFT Study. J SOLUTION CHEM 2017. [DOI: 10.1007/s10953-017-0602-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
19
|
Behera SK, Murkherjee A, Sadhuragiri G, Elumalai P, Sathiyendiran M, Kumar M, Mandal BB, Krishnamoorthy G. Aggregation induced enhanced and exclusively highly Stokes shifted emission from an excited state intramolecular proton transfer exhibiting molecule. Faraday Discuss 2017; 196:71-90. [DOI: 10.1039/c6fd00171h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The inner filter effect due to self-quenching dominates the normal emission of dyes at higher concentrations, which would limit their applications. Since normal emission was also observed with aggregation induced emission enhancement (AIEE) active excited state intramolecular proton transfer (ESIPT) exhibiting molecules, two new molecules are synthesized and studied to obtain normal emission free AIEE. The molecules are 4-(3-(benzo[d]thiazol-2-yl)-5-tert-butyl-4-hydroxybenzyl)-2-(benzo[d]thiazol-2-yl)-6-tert-butyl phenol (bis-HPBT) and its oxazole analogue (bis-HPBO). Of these molecules, bis-HPBT, which is weakly fluorescent in tetrahydrofuran solution, shows a sudden high enhancement in fluorescence upon addition of 70% water due to the formation of aggregates. Though the normal emission is also observed in tetrahydrofuran, it is completely eliminated in the aggregates, and the aggregates display exclusive tautomer emission. However, bis-HPBO does not emit such an exclusive tautomer emission in the water/tetrahydrofuran mixture. The enhancement in the fluorescence quantum yield of bis-HPBT in 70% water is ∼300 times higher than that in tetrahydrofuran. The modulated molecular structure of bis-HPBT is the cause of this outstanding AIEE. The observation of almost exclusive tautomer emission is a new additional advantage of AIEE from bis-HPBT over other ESIPT molecules. Since the tautomer emission is highly Stokes shifted, no overlap with the absorption spectrum occurs and therefore, the inner filter effect is averted. The aggregated structure acts as a good fluorescence chemosensor for metal ions as well as anions. The aggregated structure is cell permeable and can be used for cell imaging.
Collapse
Affiliation(s)
- Santosh Kumar Behera
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati – 781039
- India
| | - Anwesha Murkherjee
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati – 781039
- India
| | - G. Sadhuragiri
- School of Chemistry
- University of Hyderabad
- Hyderabad
- India
| | | | | | - Manishekhar Kumar
- Department of Biosciences and Bioengineering
- Indian Institute of Technology Guwahati
- Guwahati – 781039
- India
| | - Biman B. Mandal
- Department of Biosciences and Bioengineering
- Indian Institute of Technology Guwahati
- Guwahati – 781039
- India
| | - G. Krishnamoorthy
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati – 781039
- India
| |
Collapse
|
20
|
Mahapatra AK, Mondal S, Manna SK, Maiti K, Maji R, Ali SS, Mandal S, Uddin MR, Maiti DK. Highly Selective Ratiometric Fluorescent Probes for Detection of Perborate Based on Excited-State Intramolecular Proton Transfer (ESIPT) in Environmental Samples and Living Cells. ChemistrySelect 2016. [DOI: 10.1002/slct.201500032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ajit Kumar Mahapatra
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Sanchita Mondal
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Saikat Kumar Manna
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Kalipada Maiti
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Rajkishor Maji
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Syed Samim Ali
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Sukhendu Mandal
- Department of Microbiology; University of Calcutta; Kolkata- 700019 India
| | - Md. Raihan Uddin
- Department of Microbiology; University of Calcutta; Kolkata- 700019 India
| | - Dilip Kumar Maiti
- Department of Chemistry; University of Calcutta; Kolkata- 700009 India
| |
Collapse
|
21
|
Omidyan R, Iravani M. Excited State Proton Transfer and Deactivation Mechanism of 2-(4′-Amino-2′-hydroxyphenyl)-1H-imidazo-[4,5-c]pyridine and Its Analogues: A Theoretical Study. J Phys Chem A 2016; 120:1012-9. [DOI: 10.1021/acs.jpca.5b12122] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Reza Omidyan
- Department of Chemistry, University of Isfahan, 81746-73441 Isfahan, Iran
| | - Maryam Iravani
- Department of Chemistry, University of Isfahan, 81746-73441 Isfahan, Iran
| |
Collapse
|
22
|
Behera SK, Sadhuragiri G, Elumalai P, Sathiyendiran M, Krishnamoorthy G. Exclusive excited state intramolecular proton transfer from a 2-(2′-hydroxyphenyl)benzimidazole derivative. RSC Adv 2016. [DOI: 10.1039/c6ra11780e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The existence of trans-enol was made unviable by crafting a steric hindrance that stops the normal emission of bis-HPBI.
Collapse
Affiliation(s)
| | | | - Palani Elumalai
- School of Chemistry
- University of Hyderabad
- Hyderabad 500046
- India
| | | | | |
Collapse
|