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Hossain SM, Lakma A, Pradhan RN, Chakraborty A, Biswas A, Singh AK. Synthesis and characterization of a novel, ditopic, reversible and highly selective, “Turn-On” fluorescent chemosensor for Al3+ ion. RSC Adv 2015. [DOI: 10.1039/c5ra12040c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A ditopic Schiff base fluorescent chemosensor, L (OFF state), selectively senses Al3+ by inhibition of ESIPT/GSIPT, CN isomerization and CHEF (ON state).
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Affiliation(s)
- Sayed Muktar Hossain
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar
- India
| | - Avinash Lakma
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar
- India
| | | | - Ayon Chakraborty
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar
- India
| | - Ashis Biswas
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar
- India
| | - Akhilesh Kumar Singh
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar
- India
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52
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Satam MA, Telore RD, Sekar N. Photophysical properties of Schiff's bases from 3-(1,3-benzothiazol-2-yl)-2-hydroxy naphthalene-1-carbaldehyde. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 132:678-686. [PMID: 24907971 DOI: 10.1016/j.saa.2014.05.029] [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: 02/09/2014] [Revised: 05/01/2014] [Accepted: 05/12/2014] [Indexed: 06/03/2023]
Abstract
A series of novel Schiff's bases have been synthesized from 3-(1,3-benzothiazol-2-yl)-2-hydroxynaphthalene-1-carbaldehyde. The presence of hydroxyl group ortho to the benzothiazolyl group as well as the imine linkage lead to the occurrence of excited state intramolecular proton transfer process. The computational strategy was used to study the ESIPT process of the synthesized Schiff's bases, which revealed surprisingly that the keto form predominantly exists in the ground state contradicting the ESIPT process. Density functional theory and time dependent density functional theory have been used to investigate the structural parameters and photophysical properties in different solvents of one of the Schiff's bases. The experimental results correlate well with the computed results. All Schiff's bases show good thermal stability.
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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
| | - Nagaiyan Sekar
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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53
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Hens A, Maity A, Rajak KK. N , N coordinating schiff base ligand acting as a fluorescence sensor for zinc(II) and colorimetric sensor for copper(II), and zinc(II) in mixed aqueous media. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.08.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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54
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Wilbraham L, Savarese M, Rega N, Adamo C, Ciofini I. Describing excited state intramolecular proton transfer in dual emissive systems: a density functional theory based analysis. J Phys Chem B 2014; 119:2459-66. [PMID: 25208048 DOI: 10.1021/jp507425x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The excited state intramolecular proton transfer (ESIPT) reaction taking place within 2-(2-hydroxyphenyl)benzoxazole (HBT) and two recently experimentally characterized napthalimide derivatives-known as N-1 and N-4-has been investigated in order to identify and test a possible protocol for the description and complete mechanistic and electronic characterization of the reaction at the excited state. This protocol is based on density functional theory, time-dependent density functional theory, and a recently proposed electron density based index (DCT). This method is able to identify all stable species involved in the reaction, discriminate between possible reaction pathways over potential energy surfaces (PES), which are intrinsically very flat and difficult to characterize, and quantitatively measure the excited state charge transfer character throughout the reaction. The photophysical properties of the molecules (i.e., absorption and emission wavelength) are also quantitatively determined via the implicit inclusion of solvent effects in the case of toluene and, the more polar, tetrahydrofuran. The accuracy obtained with this protocol then opens up the possibility of the ab initio design of molecules exhibiting ESIPT for tailored applications such as highly selective molecular sensors.
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Affiliation(s)
- Liam Wilbraham
- Institut de Recherche de Chimie Paris IRCP, CNRS-Chimie ParisTech, PSL Research University , 11 Rue Pierre et Marie Curie, F-75005 Paris, France
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Hariharan P, Anthony SP. Selective turn-on fluorescence for Zn 2+ and Zn 2+ + Cd 2+ metal ions by single Schiff base chemosensor. Anal Chim Acta 2014; 848:74-79. [DOI: 10.1016/j.aca.2014.07.042] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/04/2014] [Accepted: 07/30/2014] [Indexed: 10/24/2022]
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56
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Sundar A, Prabhu M, Indra Gandhi N, Marappan M, Rajagopal G. Synthesis, characterization, structural analysis of metal(II) complexes of N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide-Multisubstituted Schiff base as a F(-) and Cu(2+) ions selective chemosensor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 129:509-518. [PMID: 24759756 DOI: 10.1016/j.saa.2014.03.084] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/09/2014] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
New colorimetric chemosensor, N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide, containing OH and NH groups as binding sites have been synthesized and characterized by spectral UV, IR, NMR and ESR. The molecular structure of ligand is determined by X-ray crystallography and it has the monoclinic space group P21/c with cell parameters a=15.1058(6), b=14.3433(6), c=17.5800(8)Å and Z=8. The electronic spectral measurements show that Co(2+), Ni(2+) and Zn(2+) complexes have tetrahedral geometry, while Cu(2+) complex has square planar geometry. Magnetic measurements show that Cu(2+), Co(2+) and Ni(2+) complexes have paramagnetic behavior and Zn(2+) complex has diamagnetic behavior. Anion binding studies carried out using (1)H NMR and UV-visible spectrophotometric titrations revealed that these receptors exhibit selective recognition towards F(-) over other halide anions. The selectivity for F(-) among the halides is attributed mainly to the hydrogen-bond interaction of the receptor with F(-). Receptor (5 × 10(-5)M) shows color change from colorless to yellow in the presence of tetrabutylammonium fluoride (TBAF, 1.5 × 10(-3)M). Moreover, F(-)-induced color changes remain the same even in the presence of large excess of Cl(-), Br(-) and I(-). The binding constant is found to be higher towards F(-) ion and this may be due to presence of OH group, which offers extra binding site. Chromogenic receptor undergoes distinct color changes from colorless to green on gradual addition of Cu(2+) can be used as colorimetric probes for spectrophotometric and visual analysis of Cu(2+) in the presence of other transition metal ions such as Co(2+), Ni(2+) and Zn(2+).
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Affiliation(s)
- A Sundar
- Department of Chemistry, Madras Medical College, Chennai 600 003, India
| | - M Prabhu
- Department of Chemistry, Government Arts College (Men), Nandanam, Chennai 600 036, India
| | - N Indra Gandhi
- PG & Research Department of Chemistry, Presidency College (Autonomous), Chennai 600 005, India
| | - M Marappan
- Department of Chemistry, Government Arts College (Men), Nandanam, Chennai 600 036, India.
| | - G Rajagopal
- Department of Chemistry, Madras Medical College, Chennai 600 003, India; Department of Chemistry, Government Arts College, Melur, Madurai 625 106, India.
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57
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Kim DH, Im YS, Kim H, Kim C. Solvent-dependent selective fluorescence sensing of Al3+ and Zn2+ using a single Schiff base. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.03.036] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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58
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Kim KB, Kim H, Song EJ, Kim S, Noh I, Kim C. A cap-type Schiff base acting as a fluorescence sensor for zinc(II) and a colorimetric sensor for iron(II), copper(II), and zinc(II) in aqueous media. Dalton Trans 2014; 42:16569-77. [PMID: 24067938 DOI: 10.1039/c3dt51916c] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A simple and low cost chemosensor is described. This sensor could simultaneously detect three biologically important metal ions through fluorogenic (Zn(2+)) and chromogenic (Fe(2+), Cu(2+), and Zn(2+)) methods in aqueous solution. The sensor could function as a "turn-on" fluorescence receptor only to Zn(2+) ions. In addition, the sensor could be successfully applied to the detection of intracellular Zn(2+). Meanwhile, the sensor displayed an obvious red color upon selective binding with Fe(2+). Therefore, the sensor could serve as a useful tool for the discrimination of Fe(2+) from Fe(3+) in aqueous media. Moreover, the sensor also showed color changes from yellow to colorless upon selective binding with Zn(2+) and Cu(2+), respectively. The detection limit of the sensor for Cu(2+) (1.5 μM) is far below the guidelines of the World Health Organization (30 μM) as the maximum allowable copper concentration in drinking water, and therefore it is capable of being a practical system for the monitoring of Cu(2+) concentrations in aqueous samples. These results provide a new approach for selectively recognizing the most important three trace elements in the human body simultaneously, for Zn(2+) by emission spectra and Fe(2+), Cu(2+), and Zn(2+) by the naked eye.
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Affiliation(s)
- Kyung Beom Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Korea.
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59
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60
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Cheng J, Ma X, Zhang Y, Liu J, Zhou X, Xiang H. Optical chemosensors based on transmetalation of salen-based Schiff base complexes. Inorg Chem 2014; 53:3210-9. [PMID: 24559169 DOI: 10.1021/ic5000815] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report our systematic studies of novel, simple, selective, and sensitive optical (both colorimetric and fluorescent) chemosensors for detecting Al(3+) based on transmetalation reactions (metal displacement or exchange reactions) of a series of K(I), Ca(II), Zn(II), Cu(II), and Pt(II) complexes containing different ligands of salen-based Schiff bases. Both the chemical structure of the salen ligand and the identity of the central metal ion have a tremendous impact on the sensing performance, which is mainly determined by the stability constant of the complex. Moreover, the selectivities of the salen-complex-based chemosensors are much better than those of the corresponding free salen ligands because of the shielding function of the filled-in metal ion in the complex. Therefore, the present work potentially provides a new and simple way to design optical probes via complex-based transmetalation reactions.
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Affiliation(s)
- Jinghui Cheng
- College of Chemistry, Sichuan University , Chengdu 610041, China
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62
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Fang X, Wang Y, Wang D, Zhao G, Zhang W, Ren A, Wang H, Xu J, Gao BR, Yang W. Synthesized Blue Fluorescent Protein Analogue with Tunable Colors from Excited-State Intramolecular Proton Transfer through an N-H···N Hydrogen Bond. J Phys Chem Lett 2014; 5:92-98. [PMID: 26276186 DOI: 10.1021/jz402280w] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A synthesized blue fluorescent protein (BFP) chromophore analogue 2-BFP ((4Z)-4-[(1H-imidazol-2-yl)methylene]-1-methyl-2-phenyl-1H-imidazol-5(4H)-one) displays dual fluorescent emission that arises from the same Z-isomer. The larger Stokes shift emission is a result of excited-state intramolecular proton transfer (ESIPT) mediated by an N-H···N type of hydrogen bond. Compared to other green fluorescent protein (GFP) analogues with ESIPT such as o-HBDI, 2-BFP possesses greatly enhanced quantum yields and much slower proton-transfer rates. In addition, fluorescence up-conversion experiments revealed two rising components of lifetime for the tautomer formation of 2-BFP. The results imply that the relaxation of the N* state in 2-BFP triggers the proton transfer of the molecule. The weaker photoacidity of N-H is proposed to be crucial for these photophysical and photochemical properties. Finally, the ESIPT process in 2-BFP is inhibited in protic solvents (MeOH) or by the formation of metal-chelate complexes, providing insights for further developments and applications of ESIPT molecules.
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Affiliation(s)
- Xinxiu Fang
- †The State Key Laboratory of Electroanalytic Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | | | | | - Guiyan Zhao
- †The State Key Laboratory of Electroanalytic Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Wenwen Zhang
- †The State Key Laboratory of Electroanalytic Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | | | | | - Jingwei Xu
- †The State Key Laboratory of Electroanalytic Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | | | - Wei Yang
- †The State Key Laboratory of Electroanalytic Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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63
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Wan CF, Lin HY, Chien C, Wu AT. A Schiff-based sensor with turn-on fluorescence for selective detection of Hg2+. LUMINESCENCE 2013; 29:698-701. [DOI: 10.1002/bio.2592] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chin-Feng Wan
- School of Applied Chemistry; Chung Shan Medical University; Taichung City 40201 Taiwan
| | - Hsiang-Yi Lin
- Department of Chemistry; National Changhua University of Education; Changhua 50058 Taiwan
| | - Cho Chien
- Department of Chemistry; National Changhua University of Education; Changhua 50058 Taiwan
| | - An-Tai Wu
- Department of Chemistry; National Changhua University of Education; Changhua 50058 Taiwan
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64
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Mathan Kumar S, Dhahagani K, Rajesh J, Nehru K, Annaraj J, Chakkaravarthi G, Rajagopal G. Synthesis, characterization, structural analysis and DNA binding studies of nickel(II)–triphenylphosphine complex of ONS donor ligand – Multisubstituted thiosemicarbazone as highly selective sensor for fluoride ion. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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65
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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]
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66
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Yang L, Zhu W, Fang M, Zhang Q, Li C. A new carbazole-based Schiff-base as fluorescent chemosensor for selective detection of Fe3+ and Cu2+. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 109:186-92. [PMID: 23523761 DOI: 10.1016/j.saa.2013.02.043] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 01/30/2013] [Accepted: 02/20/2013] [Indexed: 05/15/2023]
Abstract
A new carbazole-based Schiff-base (1) as a multi-functional fluorescent chemosensor was designed, synthesized and characterized, which can selectively recognized Fe(3+) and Cu(2+) ions over a number of other metal ions. Compound 1 could detect Fe(3+) and Cu(2+) by UV-Vis method and fluorescence method. The stoichiometry ratio of 1-Fe(3+) and 1-Cu(2+) are 2:1 and 1:1, respectively, by the method of Job's plot. Moreover, the detection limits were calculated to be 4.23×10(-6) mol/L for Fe(3+) ion and 5.67×10(-6) mol/L for Cu(2+) ion. In the presence of Fe(3+)/Cu(2+) ions, the fluorescence enhancement was attributed to the inhibited C=N isomerization and the obstructed excited state intramolecular proton transfer (ESIPT) of compound 1. At the same time, the interactions of compounds 1 with other ions were also investigated and unobvious UV-Vis absorption and fluorescence spectral changes were observed. Thus a new kind of chemosensor for Fe(3+)/Cu(2+)with high sensitivity and selectivity was introduced.
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Affiliation(s)
- Lianlian Yang
- College of Chemistry and Chemical Engineering & AnHui Province Key Laboratory of Environment-friendly Polymer Materials, Anhui University, Hefei 230601, China
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67
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Suganya S, Velmathi S. Simple azo-based salicylaldimine as colorimetric and fluorescent probe for detecting anions in semi-aqueous medium. J Mol Recognit 2013; 26:259-67. [DOI: 10.1002/jmr.2268] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 12/31/2012] [Accepted: 01/29/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Sivalingam Suganya
- Organic and Polymer Synthesis Laboratory, Department of Chemistry; National Institute of Technology; Tiruchirappalli; 620 015; India
| | - Sivan Velmathi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry; National Institute of Technology; Tiruchirappalli; 620 015; India
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68
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Shiraishi Y, Matsunaga Y, Hirai T. Phenylbenzoxazole–Amide–Cyclen Linkage as a Ratiometric Fluorescent Receptor for Zn(II) in Water. J Phys Chem A 2013; 117:3387-95. [DOI: 10.1021/jp4013009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry, and Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Yoshinao Matsunaga
- Research Center for Solar Energy Chemistry, and Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Takayuki Hirai
- Research Center for Solar Energy Chemistry, and Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
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69
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Tang L, Cai M, Zhou P, Zhao J, Zhong K, Hou S, Bian Y. A highly selective and ratiometric fluorescent sensor for relay recognition of zinc(ii) and sulfide ions based on modulation of excited-state intramolecular proton transfer. RSC Adv 2013. [DOI: 10.1039/c3ra42931h] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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70
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Colorimetric and fluorescent sensing of transition metal ions in aqueous medium by salicylaldimine based chemosensor. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012; 32:1878-1882. [DOI: 10.1016/j.msec.2012.05.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 03/08/2012] [Accepted: 05/05/2012] [Indexed: 11/19/2022]
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71
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72
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Renuga D, Udhayakumari D, Suganya S, Velmathi S. Novel thiophene based colorimetric and fluorescent receptor for selective recognition of fluoride ions. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.147] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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73
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Synthesis and photophysical properties of water-soluble sulfonato-Salen-type Schiff bases and their applications of fluorescence sensors for Cu2+ in water and living cells. Anal Chim Acta 2012; 735:96-106. [DOI: 10.1016/j.aca.2012.05.022] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 05/02/2012] [Accepted: 05/07/2012] [Indexed: 11/21/2022]
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74
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Lin HY, Cheng PY, Wan CF, Wu AT. A turn-on and reversible fluorescence sensor for zinc ion. Analyst 2012; 137:4415-7. [DOI: 10.1039/c2an35752f] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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75
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Zhao J, Ji S, Chen Y, Guo H, Yang P. Excited state intramolecular proton transfer (ESIPT): from principal photophysics to the development of new chromophores and applications in fluorescent molecular probes and luminescent materials. Phys Chem Chem Phys 2011; 14:8803-17. [PMID: 22193300 DOI: 10.1039/c2cp23144a] [Citation(s) in RCA: 717] [Impact Index Per Article: 55.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this perspective we introduce the basic photophysics of the excited-state intramolecular proton transfer (ESIPT) chromophores, then the state-of-the-art development of the ESIPT chromophores and their applications in chemosensors, biological imaging and white-light emitting materials are summarized. Most of the applications of the ESIPT chromophores are based on the photophysics properties, such as design of fluorescent chemosensors by perturbation of the ESIPT process upon interaction with the analytes, their use as biological fluorescent tags to study DNA-protein interaction by probing the variation of the hydration, or design of white-light emitting materials by employing the large Stokes shift of the ESIPT chromophores (to inhibit the Föster energy transfer of the components). The photophysical mechanism of these applications is discussed. Furthermore, a new research topic concerning the ESIPT chromophores is proposed based on our group's results, that is, to develop organic triplet sensitizers with ESIPT chromophores.
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Affiliation(s)
- Jianzhang Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, PR China.
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