1
|
Wang S, Chen X, Bao L, Liu K, Bi Y, Xue Y, Liu X, Gu Q, Zhang Y. A Magnetic Fe
3
O
4
/Modified Bentonite Composite as Recyclable Heterogeneous Catalyst for Synthesizing 2‐Substituted Benzimidazoles. ChemistrySelect 2023. [DOI: 10.1002/slct.202204930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Shuang Wang
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Xiaodong Chen
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Lijian Bao
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Kejun Liu
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Yongchang Bi
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Yafei Xue
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Xiaowen Liu
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Qiang Gu
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Yumin Zhang
- Department of Chemical Engineering and Applied Chemistry, College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| |
Collapse
|
2
|
Lee H, Lee S, Han MS. Turn-On Fluorescent pH Probes for Monitoring Alkaline pHs Using Bis[2-(2'-hydroxyphenyl)benzazole] Derivatives. SENSORS (BASEL, SWITZERLAND) 2023; 23:2044. [PMID: 36850652 PMCID: PMC9965889 DOI: 10.3390/s23042044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
For surveilling human health, industries, and the environment, pH monitoring is important. Numerous studies on fluorescent probes have been conducted to monitor various pH ranges. However, fluorescent probes that are capable of sensing alkaline regions are rare. In this study, we propose turn-on-type fluorescent probes for detecting alkaline pHs using bis[2-(2'-hydroxyphenyl)benzazole] (bis(HBX)) derivatives. These probes have high pKa values (from 9.7 to 10.8) and exhibit strong fluorescence intensity and color changes at alkaline pHs. Probes derived from bis(HBX) exhibit good photostability, reversibility, and anti-interference toward pH variations, which can be identified as a certain fluorescence change toward a basic pH. Therefore, compounds would be advantageous to use fluorescent probes for monitoring alkaline pH changes.
Collapse
|
3
|
Thakare MS, Patil DB, Patil JV, Kokate SV, Pawar NS, Patil V. Reactive Detection of Hydrazine by 6‐Hydroxy‐2‐Naphthonitrile Levulinate Anchored Colorimetric and Fluorescent Probe. ChemistrySelect 2022. [DOI: 10.1002/slct.202203510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Milind S. Thakare
- Department of Chemistry Pratap College Amalner 425401, Maharashtra India
| | - Dipak B. Patil
- Universidad de Guanajuato, Campus Guanajuato División de Ciencias Naturales y Exactas, Departamento de Química Noria Alta S/N 36050, Guanajuato, Guanajuato México
| | - Jayashree V. Patil
- Department of Chemistry The maharajá Sayajirao University of Baroda Vadodara 390002 India
| | | | - Nilesh S. Pawar
- Department of Chemistry Pratap College Amalner 425401, Maharashtra India
| | - Vikas Patil
- University Institute of Chemical Technology, Kavayitri Bahinabai Chaudhari North maharashtra University Jalgaon 425001 India
| |
Collapse
|
4
|
Shekhovtsov NA, Bushuev MB. Enol or keto? Interplay between solvents and substituents as a factor controlling ESIPT. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
5
|
Brahma M, Ranjan S, Tripathi P, Krishnamoorthy G. Modifying the proton transfer of 3,5-bis(2-hydroxyphenyl)-1H-1,2,4-triazole by water, confinement and confined water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120911. [PMID: 35131618 DOI: 10.1016/j.saa.2022.120911] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/04/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
The effect of water, confinement and confined water on the proton transfer of 3,5-bis(2-hydroxyphenyl)-1H-1,2,4-triazole (bis-HPTA) was investigated. Water alters the proton transfer process. At higher pH, an anion is formed in water and it undergoes intermolecular proton transfer and forms a keto tautomer. Confinement of molecule in β-cyclodextrin affects the intramolecular proton transfer. It also prevents the intermolecular proton transfer of the anionic form. In reverse micelle, the molecule resides in the interfacial region and interacts with bound water. The intermolecular hydrogen bond of the surfactants opens the intramolecular hydrogen bond in the weaker β-ring of bis-HPTA. It led to single tautomer emission from bis-HPTA. An increase in water amount enhances the relative amount of trans-enol, but predominantly tautomer emission is observed.
Collapse
Affiliation(s)
- Mongoli Brahma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Sanjeev Ranjan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Pravesh Tripathi
- 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
|
6
|
Shekhovtsov NA, Ryadun AA, Bushuev MB. Luminescence of a Zinc(II) Complex with a Protonated 1‐Hydroxy‐1
H
‐imidazole ESIPT Ligand: Direct Excitation of a Tautomeric Form. ChemistrySelect 2021. [DOI: 10.1002/slct.202103695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nikita A. Shekhovtsov
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of Russian Academy of Sciences 3, Akad. Lavrentiev Ave. Novosibirsk 630090 Russia
| | - Alexey A. Ryadun
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of Russian Academy of Sciences 3, Akad. Lavrentiev Ave. Novosibirsk 630090 Russia
| | - Mark B. Bushuev
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of Russian Academy of Sciences 3, Akad. Lavrentiev Ave. Novosibirsk 630090 Russia
| |
Collapse
|
7
|
Kaya S, Aydın HG, Keskin S, Ekmekci Z, Menges N. Exploring of indole derivatives for ESIPT emission: A new ESIPT-based fluorescence skeleton and TD-DFT calculations. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
8
|
Kanakala MB, Yelamaggad CV. Exceptional dual fluorescent, excited-state intramolecular proton-transfer (ESIPT) columnar liquid crystals characterized by J-stacking and large Stokes shifts. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
9
|
Patil RS, Patil AS, Patil VS, Mahulikar PP. Base Promoted Synthesis of 2-((5-methoxynaphthalen-1-yl)methyl)-3-methyl-5-sec-amino-[1,1′-biphenyl]-4-carbonitrilederivatives: Photophysical, Solvatochromic and DFT studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
10
|
Miri FS, Gorji Kandi S, Panahi F. Photophysical Properties of a Donor-π-Acceptor Distyrylbenzene Derivative in Solution and Solid state. J Fluoresc 2020; 30:917-926. [PMID: 32504386 DOI: 10.1007/s10895-020-02567-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/27/2020] [Indexed: 12/21/2022]
Abstract
In this study, a π-conjugated organic compound based on distyrylbenzenes contains an amino substituent (as an electron-donor group) and a sulfone moiety (as an electron-withdrawing group) was investigated in the viewpoint of solvatochromism effects and the possibility of pH-sensitivity. This fluorescence dye (2-(ethyl(4-((E)-4-((E)-4-(methylsulfonyl)styryl)styryl)phenyl)amino)ethan-1-ol, ASDSB) showed Uv-Vis absorption in the range of 377-407 nm with high molar extinction coefficients (ε = 0.05 × 105-1.05 × 105 M-1.cm-1) in tested solvents with different polarities. This fluorescent compound emits in the region of visible spectrum (513-631 nm) with Stokes shifts of 5077.02-8912.66 cm-1. The combination of ASDSB with poly(methyl methacrylate) (PMMA) and polyvinyl alcohol(PVA) polymers exhibits different photophysical properties which related to the polarity of polymers. By change of pH of dissolved ASDSB in methanol, a hypsochromic shift was observed. This phenomena is correspond to the change of chromophore upon protonation of amino group and its conversion to ammonium salt. In the case of solid samples, the bathochromic shifts (426-535 nm) were observed at the maximum emission wavelength for PMMA polymer. While no significant change in the maximum emission wavelength of ASDSB in PVA polymer were detected.
Collapse
Affiliation(s)
- Fateme Sadat Miri
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Saeideh Gorji Kandi
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran.
| | - Farhad Panahi
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 71454, Iran.
| |
Collapse
|
11
|
Mishra VR, Ghanavatkar CW, Sekar N. Towards NIR‐Active Hydroxybenzazole (HBX)‐Based ESIPT Motifs: A Recent Research Trend. ChemistrySelect 2020. [DOI: 10.1002/slct.201904558] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Virendra R. Mishra
- Department of Dyestuff Technology Institute of Chemical Technology (ICT), Matunga, Mumbai India
| | | | - Nagaiyan Sekar
- Department of Dyestuff Technology Institute of Chemical Technology (ICT), Matunga, Mumbai India
| |
Collapse
|
12
|
Patil V, Sekar N, Padalkar VS, Rajput J, Patil SR, Patil SV. Molecular properties of 5-(1H-Benzo[D]Oxa, thia, imid azole-2-Yl)-2-methyl quinazolin-4-ol fluorescent brighteners: Theoretical and experimental approach. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
13
|
Gharat PM, Pal H, Dutta Choudhury S. Contrasting Modulations in the Photophysics of Chrysazine with Cyclodextrin Hosts. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
14
|
Gong F, Zou W, Wang Q, Deng R, Cao Z, Gu T. Polymer nanoparticles integrated with excited-state intramolecular proton transfer-fluorescent modules as sensors for the detection of vitamin B1. Microchem J 2019. [DOI: 10.1016/j.microc.2019.05.057] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
15
|
Wang L, Du W, Hu Z, Uvdal K, Li L, Huang W. Hybrid Rhodamine Fluorophores in the Visible/NIR Region for Biological Imaging. Angew Chem Int Ed Engl 2019; 58:14026-14043. [DOI: 10.1002/anie.201901061] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Liulin Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Du
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
| | - Zhangjun Hu
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Kajsa Uvdal
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
| |
Collapse
|
16
|
Wang L, Du W, Hu Z, Uvdal K, Li L, Huang W. Hybrid Rhodamine Fluorophores in the Visible/NIR Region for Biological Imaging. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901061] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Liulin Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Du
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
| | - Zhangjun Hu
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Kajsa Uvdal
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
| |
Collapse
|
17
|
Developing a novel ratiometric fluorescent probe based on ESIPT for the detection of pH changes in living cells. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
18
|
Matsumoto S, Fuchi Y, Usui K, Hirai G, Karasawa S. Development of Turn-On Probes for Acids Triggered by Aromaticity Enhancement Using Tricyclic Amidine Derivatives. J Org Chem 2019; 84:6612-6622. [DOI: 10.1021/acs.joc.9b00023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Shota Matsumoto
- Faculty of Pharmaceutical Sciences, Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Yasufumi Fuchi
- Faculty of Pharmaceutical Sciences, Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Kazuteru Usui
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Go Hirai
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Satoru Karasawa
- Faculty of Pharmaceutical Sciences, Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
| |
Collapse
|
19
|
Patil V, Padalkar VS, Sekar N, Patil SV, Rajput J. Synthesis of 2-methyl-5-(5-phenyl substituted-1,3,4 oxadiazole-2-yl) quinazolin-4-one fluorescent brightening agent: Computational and experimental comparison of photophysical structure. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.01.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
20
|
Li K, Feng Q, Niu G, Zhang W, Li Y, Kang M, Xu K, He J, Hou H, Tang BZ. Benzothiazole-Based AIEgen with Tunable Excited-State Intramolecular Proton Transfer and Restricted Intramolecular Rotation Processes for Highly Sensitive Physiological pH Sensing. ACS Sens 2018; 3:920-928. [PMID: 29667395 DOI: 10.1021/acssensors.7b00820] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this work, a benzothiazole-based aggregation-induced emission luminogen (AIEgen) of 2-(5-(4-carboxyphenyl)-2-hydroxyphenyl)benzothiazole (3) was designed and synthesized, which exhibited multifluorescence emissions in different dispersed or aggregated states based on tunable excited-state intramolecular proton transfer (ESIPT) and restricted intramolecular rotation (RIR) processes. 3 was successfully used as a ratiometric fluorescent chemosensor for the detection of pH, which exhibited reversible acid/base-switched yellow/cyan emission transition. More importantly, the pH jump of 3 was very precipitous from 7.0 to 8.0 with a midpoint of 7.5, which was well matched with the physiological pH. This feature makes 3 very suitable for the highly sensitive detection of pH fluctuation in biosamples and neutral water samples. 3 was also successfully used as a ratiometric fluorescence chemosensor for the detection of acidic and basic organic vapors in test papers.
Collapse
Affiliation(s)
- Kai Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
- Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Qi Feng
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Guangle Niu
- Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Weijie Zhang
- Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Yuanyuan Li
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Henan 450001, P. R. China
| | - Miaomiao Kang
- Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Kui Xu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Juan He
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Henan 450001, P. R. China
| | - Hongwei Hou
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Ben Zhong Tang
- Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| |
Collapse
|
21
|
Bi L, Wang Y, Yang Y, Li Y, Mo S, Zheng Q, Chen L. Highly Sensitive and Reproducible SERS Sensor for Biological pH Detection Based on a Uniform Gold Nanorod Array Platform. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15381-15387. [PMID: 29664282 DOI: 10.1021/acsami.7b19347] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Conventional research on surface-enhanced Raman scattering (SERS)-based pH sensors often depends on nanoparticle aggregation, whereas the variability in nanoparticle aggregation gives rise to poor repeatability in the SERS signal. Herein, we fabricated a gold nanorod array platform via an efficient evaporative self-assembly method. The platform exhibits great SERS sensitivity with an enhancement factor of 5.6 × 107 and maintains excellent recyclability and reproducibility with relative standard deviation (RSD) values of less than 8%. On the basis of the platform, we developed a highly sensitive bovine serum albumin (BSA)-coated 4-mercaptopyridine (4-MPy)-linked (BMP) SERS-based pH sensor to report pH ranging from pH 3.0 to pH 8.0. The intensity ratio variation of 1004 and 1096 cm-1 in 4-MPy showed excellent pH sensitivity, which decreased as the surrounding pH increased. Furthermore, this BMP SERS-based pH sensor was employed to measure the pH value in C57BL/6 mouse blood. We have demonstrated that the pH sensor has great advantages such as good stability, reliability, and accuracy, which could be extended for the design of point-of-care devices.
Collapse
Affiliation(s)
| | - Yunqing Wang
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation , Yantai Institute of Coastal Zone Research , Yantai 264003 , China
| | | | | | | | | | - Lingxin Chen
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation , Yantai Institute of Coastal Zone Research , Yantai 264003 , China
| |
Collapse
|
22
|
Sedgwick AC, Wu L, Han HH, Bull SD, He XP, James TD, Sessler JL, Tang BZ, Tian H, Yoon J. Excited-state intramolecular proton-transfer (ESIPT) based fluorescence sensors and imaging agents. Chem Soc Rev 2018; 47:8842-8880. [DOI: 10.1039/c8cs00185e] [Citation(s) in RCA: 690] [Impact Index Per Article: 115.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We review recent advances in the design and application of excited-state intramolecular proton-transfer (ESIPT) based fluorescent probes. These sensors and imaging agents (probes) are important in biology, physiology, pharmacology, and environmental science.
Collapse
Affiliation(s)
- Adam C. Sedgwick
- Department of Chemistry
- University of Bath
- Bath
- UK
- Department of Chemistry
| | - Luling Wu
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - Hai-Hao Han
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | | | - Xiao-Peng He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Tony D. James
- Department of Chemistry
- University of Bath
- Bath
- UK
- Department of Materials and Life Sciences
| | | | - Ben Zhong Tang
- Department of Chemistry
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
- China
| | - He Tian
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Juyoung Yoon
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 120-750
- Korea
| |
Collapse
|
23
|
Qiao N, Wei NN, Zhang J, Hao C. The dual-luminescence mechanism of the ESIPT chemosensor tetrasubstituted imidazole core compound: a TDDFT study. NEW J CHEM 2018. [DOI: 10.1039/c8nj01162a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The dual-luminescence mechanism of the tetrasubstituted imidazole core (TIC) compound was theoretically explored by considering the excited-state intramolecular proton transfer (ESIPT) process in the present study.
Collapse
Affiliation(s)
- Na Qiao
- School of Life Science and Medicine
- Dalian University of Technology
- Panjin 124221
- P. R. China
| | - Ning-Ning Wei
- School of Life Science and Medicine
- Dalian University of Technology
- Panjin 124221
- P. R. China
| | - Jianing Zhang
- School of Life Science and Medicine
- Dalian University of Technology
- Panjin 124221
- P. R. China
| | - Ce Hao
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin 124221
- P. R. China
| |
Collapse
|
24
|
Zhang H, Yang S, Beier RC, Beloglazova NV, Lei H, Sun X, Ke Y, Zhang S, Wang Z. Simple, high efficiency detection of microcystins and nodularin-R in water by fluorescence polarization immunoassay. Anal Chim Acta 2017; 992:119-127. [DOI: 10.1016/j.aca.2017.09.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/24/2017] [Accepted: 09/01/2017] [Indexed: 12/18/2022]
|
25
|
Sahu S, Dutta S, Krishnamoorthy G. An unusual deprotonation trend in 2-(2'-hydroxyphenyl)pyridoimidazoles. Phys Chem Chem Phys 2016; 18:29905-29913. [PMID: 27759124 DOI: 10.1039/c6cp05932e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The anion sensitivity and the deprotonation nature of the nitrogenous analogues of 2-(2'-hydroxyphenyl)benzimidazole (HPBI) are investigated in a polar aprotic medium. It is observed that the substitution of pyridyl nitrogen enhances the anion sensitivity. However, despite the enhanced sensitivity of the nitrogenous analogues the deprotonation of these molecules in the presence of strong anions is less favored as compared to HPBI. This anomalous trend observed for the nitrogenous analogs is discussed and explained using theoretical calculations and experimental findings. It is also found that the sensitivity towards anions and the formation of anions also depend on the position of the pyridyl nitrogen.
Collapse
Affiliation(s)
- Saugata Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India.
| | | | | |
Collapse
|
26
|
New AB2 type two-photon absorption dyes for well-separated dual-emission: molecular preorganization based approach to photophysical properties. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
27
|
Jadhav MM, Rhyman L, Ramasami P, Sekar N. Unfolding ESIPT in Bis-2,5-(2-benzoxazolyl) Hydroquinone and 2,5-Bis(benzo[d]oxazol-2-yl)-4-methoxyphenol: a Comprehensive Computational Approach. J Fluoresc 2016; 26:1295-307. [PMID: 27147227 DOI: 10.1007/s10895-016-1816-1] [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: 12/25/2015] [Accepted: 04/26/2016] [Indexed: 11/30/2022]
Abstract
The photo-physical behaviour of bis-2,5-(2-benzoxazolyl) hydroquinone and 2,5-bis (benzo[d]oxazol-2-yl)-4-methoxyphenol was studied using the Density Functional Theory (DFT) and Time-Dependent Density Functional Theory (TD-DFT). All the possible rotamers were optimized to obtain global minimum optimized structure. The theoretical absorption and emission values of rotamers estimated by using TD-DFT [TD-B3LYP/6-31G(d)] are in good agreement with experimental absorption and emission wavelengths. Based on the absorption values, the contribution of respective rotamer is determined theoretically.
Collapse
Affiliation(s)
- Manoj M Jadhav
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, Maharashtra, 400019, India
| | - Lydia Rhyman
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius
| | - Ponnadurai Ramasami
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius.
| | - Nagaiyan Sekar
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, Maharashtra, 400019, India.
| |
Collapse
|
28
|
Sahu S, Das M, Krishnamoorthy G. Switching between cis and trans anions of 2-(2'-hydroxyphenyl)benzimidazole: a molecular rotation perturbed by chemical stabilization. Phys Chem Chem Phys 2016; 18:11081-90. [PMID: 27051888 DOI: 10.1039/c5cp07949g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite the fact that 2-(2'-hydroxyphenyl)benzimidazole (HPBI) exists as the cis and trans enol in neutral form, it was reported to exist only in the trans form upon deprotonation in an aqueous medium. It was also shown that the dianion formed in the ground state can be re-protonated to form the trans-anion in the excited state. In the present study, the cis-anion and dianion could be obtained upon proper stabilization in suitable environments. Switching between the cis and trans-anion was demonstrated to be possible by changing the environment. Theoretical calculations were performed to substantiate the existence of the cis-anion and dianion. In contrast to a literature report, it was shown that the 'OH' group deprotonates before the 'NH' group to form a monoanion not only in protic solvents but also in aprotic solvents.
Collapse
Affiliation(s)
- Saugata Sahu
- Department of chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India - 781039.
| | - Minati Das
- Department of chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India - 781039.
| | - G Krishnamoorthy
- Department of chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India - 781039.
| |
Collapse
|
29
|
Padalkar VS, Seki S. Excited-state intramolecular proton-transfer (ESIPT)-inspired solid state emitters. Chem Soc Rev 2016; 45:169-202. [PMID: 26506465 DOI: 10.1039/c5cs00543d] [Citation(s) in RCA: 548] [Impact Index Per Article: 68.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Solid state emitters based on excited state intramolecular proton transfer (ESIPT) have been attracting considerable interest since the past few years in the field of optoelectronic devices because of their desirable unique photophysical properties. The photophysical properties of the solid state ESIPT fluorophores determine their possible applicability in functional materials. Less fluorescence quantum efficiencies and short fluorescence lifetime in the solid state are the shortcomings of the existing ESIPT solid state emitters. Designing of ESIPT chromophores with high fluorescence quantum efficiencies and a long fluorescence lifetime in the solid state is a challenging issue because of the unclear mechanism of the solid state emitters in the excited state. Reported design strategies, detailed photophysical properties, and their applications will help in assisting researchers to overcome existing challenges in designing novel solid state ESIPT fluorophores for promising applications. This review highlights recently developed solid state ESIPT emitters with focus on molecular design strategies and their photophysical properties, reported in the last five years.
Collapse
Affiliation(s)
- Vikas S Padalkar
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| |
Collapse
|
30
|
Balijapalli U, Manickam S, Thiyagarajan MD, Iyer SK. Highly emissive, naked-eye solvatochromic probe based on styryl tetrahydrodibenzo[a,i]phenanthridine for acidochromic applications. RSC Adv 2016. [DOI: 10.1039/c6ra09359k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new series of 5-styryl tetrahydrodibenzo[a,i]phenanthridines was readily synthesized from β-tetralone, ammonium acetate and cinnamaldehydes and successfully applied to quantitatively detect pH in biological fluids and acid impurities in solvents.
Collapse
|
31
|
Xu XY, Yan B. An efficient and sensitive fluorescent pH sensor based on amino functional metal–organic frameworks in aqueous environment. Dalton Trans 2016; 45:7078-84. [DOI: 10.1039/c6dt00361c] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, an amino group functionalized MOF (Al-MIL-101-NH2), which shows strong blue luminescence, is used as pH sensor. Due to the protonated amino group, the fluorescence intensity of Al-MIL-101-NH2almost increases with increasing pH and gives a good linear relationship (R2= 0.99688) with the pH value.
Collapse
Affiliation(s)
- Xiao-Yu Xu
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
| | - Bing Yan
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
| |
Collapse
|
32
|
Latha V, Balakrishnan C, Neelakantan M. Synthesis, crystal structure and DFT studies of a dual fluorescent ketamine: Structural changes in the ground and excited states. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
33
|
Deshmukh MS, Sekar N. Photophysical properties of ESIPT inspired fluorescent 2-(2-hydroxyphenyl)-6-methylimidazo[4,5-f]isoindole-5,7(1H,6H)-dione and its derivative: experimental and DFT based approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:457-465. [PMID: 25108369 DOI: 10.1016/j.saa.2014.07.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 07/03/2014] [Accepted: 07/12/2014] [Indexed: 06/03/2023]
Abstract
The excited-state intramolecular proton transfer chromophores 2-(2-hydroxyphenyl)-6-methylimidazo[4,5-f]isoindole-5,7(1H,6H)-dione and 2-(4-(diethylamino)-2-hydroxyphenyl)-6-methylimidazo[4,5-f]isoindole-5,7(1H,6H)-dione are synthesized from 4,5-diamino-N-methylphthalimide. The photophysical behavior of the synthesized chromophores was studied using UV-visible and fluorescence spectroscopy in the polar and non-polar solvents. The synthesized o-hydroxyphenyl benzimidazole derivatives are fluorescent and very sensitive to the solvent polarity. These dyes are thermally stable up to 317 °C. Density Functional Theory computations have been used to understand the structural, molecular, electronic and photophysical properties of the chromophores. The experimental absorption and emission wavelengths are in good agreement with the computed vertical excitation and theoretical emission obtained by Density Functional Theory and Time Dependant Density Functional Theory.
Collapse
Affiliation(s)
- Mininath S Deshmukh
- Tinctorial Chemistry Group, Dyestuff Technology Department, Institute of Chemical Technology (Formerly UDCT), N.P. Marg, Matunga, Mumbai 400 019, Maharashtra, India
| | - Nagaiyan Sekar
- Tinctorial Chemistry Group, Dyestuff Technology Department, Institute of Chemical Technology (Formerly UDCT), N.P. Marg, Matunga, Mumbai 400 019, Maharashtra, India.
| |
Collapse
|
34
|
Jeżewski A, Hammann T, Cywiński PJ, Gryko DT. Optical Behavior of Substituted 4-(2′-Hydroxyphenyl)imidazoles. J Phys Chem B 2015; 119:2507-14. [DOI: 10.1021/jp507992x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Artur Jeżewski
- Institute of Organic Chemistry of the Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Tommy Hammann
- Institute of Organic Chemistry of the Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Piotr J. Cywiński
- NanoPolyPhotonics, Fraunhofer Institute for Applied Polymer Research, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
| | - Daniel T. Gryko
- Institute of Organic Chemistry of the Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
| |
Collapse
|
35
|
Barman S, Mukhopadhyay SK, Gangopadhyay M, Biswas S, Dey S, Singh NDP. Coumarin–benzothiazole–chlorambucil (Cou–Benz–Cbl) conjugate: an ESIPT based pH sensitive photoresponsive drug delivery system. J Mater Chem B 2015; 3:3490-3497. [DOI: 10.1039/c4tb02081b] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed an ESIPT based drug delivery system, Cou–Benz–Cbl conjugate, with pH sensitive fluorescence properties and photocontrolled release of the anticancer drug chlorambucil.
Collapse
Affiliation(s)
- Shrabani Barman
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | | | | | - Sandipan Biswas
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Satyahari Dey
- Department of Biotechnology
- Indian Institute of Technology
- Kharagpur 721302
- India
| | | |
Collapse
|
36
|
Latha V, Annaraj B, Neelakantan MA. ESIPT inspired dual fluorescent probe (Z)-3-((4-(4-aminobenzyl) phenyl) amino)-1,3-diphenylprop-2-en-1-one: experimental and DFT based approach to photophysical properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:44-53. [PMID: 24929314 DOI: 10.1016/j.saa.2014.04.192] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/26/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
A fluorescent probe (Z)-3-((4-(4-aminobenzyl) phenyl) amino)-1,3-diphenylprop-2-en-1-one (L) was synthesized and characterized by IR, (1)H NMR, ESI mass, UV-visible and fluorescence spectroscopy and by single crystal X-ray diffraction. The molecule has a stable helical structure due to intermolecular CH π interaction. The thermal stability of L was studied by TG analysis. The electronic structure calculations of L have been carried out using DFT at B3LYP/6-31G (d,p) level. The vibrational frequencies and (1)H NMR spectra were computed at this level and compared with experimental values. Major orbital contributions for the electronic transitions were assigned with the help of time-dependent density functional theory (TD-DFT). The observed electronic absorption spectra of L in different solvents coincide with the computed spectra in keto form. The dual emission and high Stokes shift values support the excited state intramolecular proton transfer (ESIPT) process. The molecular docking has been employed to get information about the interaction of L with DNA [6BNA].
Collapse
Affiliation(s)
- V Latha
- Chemistry Research Centre, National Engineering College, K.R. Nagar, Kovilpatti, 628503 Thoothukudi District, Tamil Nadu, India
| | - B Annaraj
- Chemistry Research Centre, National Engineering College, K.R. Nagar, Kovilpatti, 628503 Thoothukudi District, Tamil Nadu, India
| | - M A Neelakantan
- Chemistry Research Centre, National Engineering College, K.R. Nagar, Kovilpatti, 628503 Thoothukudi District, Tamil Nadu, India.
| |
Collapse
|
37
|
Phenalenone Fluorophores-Synthesis, Photophysical Properties and DFT Study. J Fluoresc 2014; 24:1827-40. [DOI: 10.1007/s10895-014-1471-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 09/29/2014] [Indexed: 12/22/2022]
|
38
|
Benelhadj K, Muzuzu W, Massue J, Retailleau P, Charaf-Eddin A, Laurent AD, Jacquemin D, Ulrich G, Ziessel R. White emitters by tuning the excited-state intramolecular proton-transfer fluorescence emission in 2-(2'-hydroxybenzofuran)benzoxazole dyes. Chemistry 2014; 20:12843-57. [PMID: 25145709 DOI: 10.1002/chem.201402717] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Indexed: 11/10/2022]
Abstract
The synthesis, structural, and photophysical properties of a new series of original dyes based on 2-(2'-hydroxybenzofuran)benzoxazole (HBBO) is reported. Upon photoexcitation, these dyes exhibit intense dual fluorescence with contribution from the enol (E*) and the keto (K*) emission, with K* being formed through excited-state intramolecular proton transfer (ESIPT). We show that the ratio of emission intensity E*/K* can be fine-tuned by judiciously decorating the molecular core with electron-donating or -attracting substituents. Push-pull dyes 9 and 10 functionalized by a strong donor (nNBu2 ) and a strong acceptor group (CF3 and CN, respectively) exhibit intense dual emission, particularly in apolar solvents such as cyclohexane in which the maximum wavelength of the two bands is the more strongly separated. Moreover, all dyes exhibit strong solid-state dual emission in a KBr matrix and polymer films with enhanced quantum yields reaching up to 54 %. A wise selection of substituents led to white emission both in solution and in the solid state. Finally, these experimental results were analyzed by time-dependent density functional theory (TD-DFT) calculations, which confirm that, on the one hand, only E* and K* emission are present (no rotamer) and, on the other hand, the relative free energies of the two tautomers in the excited state guide the ratio of the E*/K* emission intensities.
Collapse
Affiliation(s)
- Karima Benelhadj
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), UMR7515 CNRS Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 02 (France), Fax: (+33) 3-68-85-27-6
| | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Satam MA, Telore RD, Tathe AB, Gupta VD, Sekar N. A combined theoretical and experimental investigation on the solvatochromism of ESIPT3-(1,3-benzothiazol-2-yl)-2-hydroxynaphthalene-1-carbaldehyde. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 127:16-24. [PMID: 24632151 DOI: 10.1016/j.saa.2014.01.120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 01/16/2014] [Accepted: 01/26/2014] [Indexed: 06/03/2023]
Abstract
Excited state intramolecular proton transfer inspired 3-(1,3-benzothiazol-2-yl)-2-hydroxynaphthalene-1-carbaldehyde, showing solid state fluorescence has been synthesized. Existence of excited state intramolecular proton transfer process between carbonyl group and phenolic OH group has been theoretically predicted using computational method. Density functional theory and time dependent density functional theory computations have been used to investigate structural parameters and understand the photophysical properties of the synthesized carbaldehyde. The photophysical properties of carbaldehyde were evaluated using UV-Visible and fluorescence spectroscopy and are found to be very sensitive to the microenvironment such as solvent polarity and pH. The experimental absorption-emission a results are correlated with the computed values. The increase in the dipole moment of A2-Keto(*) than A2-Enol(*) suggested the presence of keto form in the excited state and which is responsible for the single fluorescence emission with a large Stokes shift in all solvents.
Collapse
Affiliation(s)
- Manjaree A Satam
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Rahul D Telore
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Abhinav B Tathe
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Vinod D Gupta
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Nagaiyan Sekar
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
| |
Collapse
|
40
|
Phatangare KR, Lanke SK, Sekar N. Fluorescent Coumarin Derivatives with Viscosity Sensitive Emission - Synthesis, Photophysical Properties and Computational Studies. J Fluoresc 2014; 24:1263-74. [DOI: 10.1007/s10895-014-1410-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 05/19/2014] [Indexed: 10/25/2022]
|
41
|
Patil VS, Padalkar VS, Phatangare KR, Umape PG, Borase BN, Sekar N. Synthesis, Characterization, and Antibacterial Activity of Novel (1H-Benzo[d]imidazole-2-yl)-6-(diethylamino)-3H-one-xanthene, Phenoxazine, and Oxazine. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1998] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vikas S. Patil
- Tinctorial Chemistry Group, Department of Intermediate and Dyestuff Technology; Institute of Chemical Technology (Formerly UDCT); N. P. Marg, Matunga Mumbai 400 019 Maharashtra India
| | - Vikas S. Padalkar
- Tinctorial Chemistry Group, Department of Intermediate and Dyestuff Technology; Institute of Chemical Technology (Formerly UDCT); N. P. Marg, Matunga Mumbai 400 019 Maharashtra India
| | - Kiran R. Phatangare
- Tinctorial Chemistry Group, Department of Intermediate and Dyestuff Technology; Institute of Chemical Technology (Formerly UDCT); N. P. Marg, Matunga Mumbai 400 019 Maharashtra India
| | - Prashant G. Umape
- Tinctorial Chemistry Group, Department of Intermediate and Dyestuff Technology; Institute of Chemical Technology (Formerly UDCT); N. P. Marg, Matunga Mumbai 400 019 Maharashtra India
| | - Bhushan N. Borase
- Tinctorial Chemistry Group, Department of Intermediate and Dyestuff Technology; Institute of Chemical Technology (Formerly UDCT); N. P. Marg, Matunga Mumbai 400 019 Maharashtra India
| | - N. Sekar
- Tinctorial Chemistry Group, Department of Intermediate and Dyestuff Technology; Institute of Chemical Technology (Formerly UDCT); N. P. Marg, Matunga Mumbai 400 019 Maharashtra India
| |
Collapse
|
42
|
Fluorescence properties of twenty fluorescein derivatives: lifetime, quantum yield, absorption and emission spectra. J Fluoresc 2014; 24:819-26. [PMID: 24510430 DOI: 10.1007/s10895-014-1356-5] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Accepted: 01/27/2014] [Indexed: 10/25/2022]
Abstract
The fluorescence lifetime (τf), emission quantum yield (Φf), absorption and emission spectral data of 20 fluorescein derivatives were measured under the same conditions by using time-correlated single photon counting, steady state fluorescence and absorption methods to get comparable data. Based on the results, the factors and mechanism that control the fluorescence properties of the fluorescein dyes are discussed. Both Φf and τf are remarkably dependent on the substitution on either xanthene or phenyl rings, but their ratio (Φf/τf), i.e. rate constant of radiation process, is a constant value (0.20 × 10(9) s(-1)). The rate constant of nonradiation process, on the other hand, is varied with both the structure and the solvent used.
Collapse
|
43
|
Stasyuk AJ, Banasiewicz M, Ventura B, Cyrański MK, Gryko DT. Benzo[a]imidazo[5,1,2-cd]indolizines – a new class of molecules displaying excited state intramolecular proton transfer. NEW J CHEM 2014. [DOI: 10.1039/c3nj00842h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
44
|
Jin R, Zhang J. Photophysical Properties of Derivatives of 2-(2-Hydroxyphen-yl)-1,3,4-oxadiazole: A Theoretical Study. J Phys Chem A 2013; 117:8285-92. [DOI: 10.1021/jp403643f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ruifa Jin
- Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
- College of Chemistry and Chemical
Engineering, Chifeng University, Chifeng
024000, China
| | - Jingping Zhang
- Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| |
Collapse
|
45
|
Gao F, Wang X, Li H, Ye X. New two-photon absorption organic chromophores containing imino and hydroxyl groups: synthesis, ESIPT and chemosensors. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.121] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
46
|
Padalkar VS, Phatangare KR, Sekar N. Synthesis of Novel Fluorescent 2-{4-[1-(Pyridine-2-yl)-1H-pyrazol-3-yl] phenyl}-2H-naphtho [1,2-d] [1,2,3] triazolyl Derivatives and Evaluation of Their Thermal and Photophysical Properties. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vikas S. Padalkar
- Tinctorial Chemistry Group, Intermediate and Dyestuff Technology Department; Institute of Chemical Technology; N. P. Marg, Matunga; Mumbai; 400019; Maharashtra; India
| | - Kiran R. Phatangare
- Tinctorial Chemistry Group, Intermediate and Dyestuff Technology Department; Institute of Chemical Technology; N. P. Marg, Matunga; Mumbai; 400019; Maharashtra; India
| | - N. Sekar
- Tinctorial Chemistry Group, Intermediate and Dyestuff Technology Department; Institute of Chemical Technology; N. P. Marg, Matunga; Mumbai; 400019; Maharashtra; India
| |
Collapse
|
47
|
TDDFT Investigation of the Electronic Structures and Photophysical Properties of Fluorescent Extended Styryl Push-Pull Chromophores Containing Carbazole Unit. J Fluoresc 2013; 23:1121-38. [DOI: 10.1007/s10895-013-1241-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 05/22/2013] [Indexed: 10/26/2022]
|
48
|
Patil VS, Padalkar VS, Tathe AB, Gupta VD, Sekar N. Synthesis, photo-physical and DFT studies of ESIPT inspired novel 2-(2',4'-dihydroxyphenyl) benzimidazole, benzoxazole and benzothiazole. J Fluoresc 2013; 23:1019-29. [PMID: 23681947 DOI: 10.1007/s10895-013-1228-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/30/2013] [Indexed: 11/25/2022]
Abstract
Novel ESIPT inspired benzimidazole, benzoxazole and benzothiazole were synthesized from 2,4-dihydroxy benzoic acid and 1,2-phenelenediamine, 2-aminophenol, and 2-aminothiophenol respectively. The synthesized 2-(2',4'-dihydroxyphenyl) benzimidazole, benzoxazole and benzothiazole are fluorescent and the emission characteristic are very sensitive to the micro-environment. They show a single absorption and dual emission with large Stokes shift originating from excited state intramolecular proton transfer. The absorption-emission characteristics of all these compounds are studied as a function of pH. The change in the electronic transition, energy levels, and orbital diagrams of synthesized compounds were investigated by the molecular orbital calculation and were correlated with the experimental spectral emission. Experimental absorption and emission wavelengths are in good agreement with those predicted using the Density Functional Theory (DFT) and Time-Dependent Density Functional Theory (TD-DFT) [B3LYP/6-31G(d)].
Collapse
Affiliation(s)
- Vikas S Patil
- Tinctorial Chemistry Group, Institute of Chemical Technology (Formerly UDCT), Matunga, Mumbai, Maharashtra, India.
| | | | | | | | | |
Collapse
|
49
|
Padalkar VS, Ramasami P, Sekar N. A combined experimental and DFT-TDDFT study of the excited-state intramolecular proton transfer (ESIPT) of 2-(2'-hydroxyphenyl) imidazole derivatives. J Fluoresc 2013; 23:839-51. [PMID: 23613133 DOI: 10.1007/s10895-013-1201-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 02/24/2013] [Indexed: 10/26/2022]
Abstract
We report a combined experimental and computational study of the effect of electron donor and acceptor groups on the excited state intramolecular proton transfer of 2-(2'-hydroxyphenyl) imidazole derivatives in solvents of different polarities. The changes in fluorescence properties, electronic transitions and energy levels are analyzed and discussed. The study was complemented using the Density Functional Theory (DFT)-Time Dependent DFT [B3LYP/6-31G(d)] computations. The calculated absorption and emission spectra of the imidazole derivatives are in good agreement with the experiments, thus allowing an assignment of the UV-vis spectra.
Collapse
Affiliation(s)
- Vikas S Padalkar
- Tinctorial Chemistry Group, Institute of Chemical Technology, Matunga, Mumbai, 400019, India,
| | | | | |
Collapse
|
50
|
ESIPT inspired fluorescent 2-(4-benzo[d]oxazol-2-yl)naphtho[1,2-d]oxazol-2-yl)phenol: experimental and DFT based approach to photophysical properties. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.095] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|