1
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Wen J, Xia Y, Ding S, Liu Y. Theoretical investigation of the Zn 2+ detection mechanism based on the quinoline derivative of the Schiff-base receptor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 287:122123. [PMID: 36423505 DOI: 10.1016/j.saa.2022.122123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/01/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
The sensing mechanism of the quinoline-derived Schiff base HL (concentrated from 8-hydroxyquinoline with 2,4-dihydroxybenzaldehyde) as a highly selective fluorescent probe for Zn2+ was investigated by theoretical calculations with DFT and TDDFT. The conformations of the HL molecule, its ketone form and its Zinc complex structure, were optimized in the ground and excited states. The systems have been studied in depth in terms of structural parameters, frontier molecular orbitals, absorption and fluorescence spectra as well as potential energy curves analysis and approximately density gradient analysis. The present theoretical calculations propose a different detection mechanism from that proposed experimentally. The theoretical results predict that the fluorescence quenching in HL is attributed to the excited state intramolecular proton transfer (ESIPT) rather than the photoinduced electron transfer (PET) of benzene to electrons. When Zn2+ is introduced, Zn2+ takes the place of the H atom, creating a complex that blocks the ESIPT reaction and restores fluorescence.
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Affiliation(s)
- Jinrong Wen
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Yong Xia
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Sha Ding
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Yuejun Liu
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
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2
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Turk P, Singh K, Choudhary S. Synthesis, Spectral Characterization, Electrochemical, Antioxidant and Antimicrobial Evaluation of 3d-Metal Complexes of 3-Mercapto-4-(Pyren-1-ylmethylene)Amino-1,2,4-Triazin-5-One. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2172051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Prerna Turk
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
- Government College Bherian, Kurukshetra, India
| | - Kiran Singh
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
| | - Swati Choudhary
- Department of Biochemistry, Kurukshetra University, Kurukshetra, India
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3
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Schiff Bases: A Versatile Fluorescence Probe in Sensing Cations. J Fluoresc 2023; 33:859-893. [PMID: 36633727 DOI: 10.1007/s10895-022-03135-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/24/2022] [Indexed: 01/13/2023]
Abstract
Metal cations such as Zn2+, Al3+, Hg2+, Cd2+, Sn2+, Fe2+, Fe3+ and Cu2+ play important roles in biology, medicine, and the environment. However, when these are not maintained in proper concentration, they can be lethal to life. Therefore, selective sensing of metal cations is of great importance in understanding various metabolic processes, disease diagnosis, checking the purity of environmental samples, and detecting toxic analytes. Schiff base probes have been largely used in designing fluorescent sensors for sensing metal ions because of their easy processing, availability, fast response time, and low detection limit. Herein, an in-depth report on metal ions recognition by some Schiff base fluorescent sensors, their sensing mechanism, their practical applicability in cell imaging, building logic gates, and analysis of real-life samples has been presented. The metal ions having biological, industrial, and environmental significance are targeted. The compiled information is expected to prove beneficial in designing and synthesis of the related Schiff base fluorescent sensors.
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4
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Patil N, Dhake R, Phalak R, Fegade U, Ramalingan C, Saravanan V, Altalhi T. A Colorimetric Distinct Color Change Cu(II) 4-{[1-(2,5-dihydroxyphenyl)ethylidene]amino}-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one Chemosensor and its Application as a Paper Test Kit. J Fluoresc 2022; 33:1089-1099. [PMID: 36574186 DOI: 10.1007/s10895-022-03034-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 09/21/2022] [Indexed: 12/29/2022]
Abstract
In the current research work "4-{[1-(2,5-dihydroxyphenyl)ethylidene]amino}-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one" chemosensor (C1) synthesized by condensation reaction using "4-amino-1,2-dihydro-1,5-dimethyl-2-phenylpyrazol-3-one" and "2,5-dihydroxy actophenone" was used as the effective sensor of metal ion. The C1 shows absorption peak at 326 nm due to the C = C bond (π-π* transition), while the absorption peak at 364 nm is caused by the C = O bond (n-π* transition). In the presence of copper, C1 only demonstrated a redshift in absorption peak from 364 to 425 nm. Even in the presence of other competing metal ions, the hypsochromic shift of the absorption band and the quenching of the fluorescence emission intensity were different for detecting Cu2+, in CH3OH-H2O (v/v = 6:4). The capacity of the C1 to bind with Cu2+ was further proved using DFT simulations. The complex C1 + Cu2+ has a HOMO-LUMO energy gap of 2.8002 eV, which is lesser than C1 (2.9991 eV) showing improvement in the stability of the C1 + Cu2+ complex. Using the Benesi-Hildebrand and Scatchard plots, calculated Kb values were to be 47,340 and 48369 M-1 respectively, showing the creation of stable complexation between Cu2+ and C1 with 1:1 stoichiometry. The limit of detection (LOD) for Cu2+ ion was 649 nM. Strip sheets were also built and tested to detect varying amounts of Cu2+ in aqueous solution, and their color change suggested that they might be used for on-site Cu2+ detection in polluted water.
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Affiliation(s)
- Nilima Patil
- Department of Chemistry, D. D. N. Bhole College, Bhusawal, Jalgaon, 425201, MH, India
- Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal, Jalgaon, 425201, MH, India
| | - Rajesh Dhake
- Department of Chemistry, D. D. N. Bhole College, Bhusawal, Jalgaon, 425201, MH, India.
| | - Raju Phalak
- Department of Chemistry, D. D. N. Bhole College, Bhusawal, Jalgaon, 425201, MH, India
| | - Umesh Fegade
- Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal, Jalgaon, 425201, MH, India.
| | - Chennan Ramalingan
- Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to Be University), Krishnankoil, 626 126, Tamilnadu, India
| | - Vadivel Saravanan
- Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to Be University), Krishnankoil, 626 126, Tamilnadu, India
| | - Tariq Altalhi
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
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Shaji LK, Jose J, Bhaskar R, Selva Kumar R, Vetriarasu V, Bhat SG, Ashok Kumar S. Smartphone assisted fluorescent-colorimetric probe for bismuth (III) ion and potential applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Theoretical study on the optical properties of an ESIPT-based fluorescent probe for phosgene. J Mol Model 2022; 28:195. [PMID: 35727345 DOI: 10.1007/s00894-022-05198-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/14/2022] [Indexed: 10/18/2022]
Abstract
A fluorescent probe Pi with the excited-state intramolecular proton transfer (ESIPT) properties was synthesized and used to detect the phosgene in solution and gas phases. However, the detection mechanism of the fluorescent probe needs to be further studied. Herein, the density functional theory (DFT) and time-dependent density functional theory (TD-DFT) methods were adopted to explore the molecular structures and electronic spectra properties of probe and its product Pio after reacting with phosgene. Through analysis for molecular structure parameters and infrared vibrations accompanied with the hydrogen bond of Pi, it is confirmed that the intramolecular hydrogen bond of Pi is enhanced under light excitation, which illustrates the occurrence of ESIPT reaction combined with the scanned potential energy curves. It can be seen from the simulated spectra that Pi shows double fluorescence through ESIPT process, while the fluorescent product Pio exhibits the single fluorescence due to the disappearance of intramolecular hydrogen bond. Through the study on the structure and optical properties of Pi and Pio, it can be helpful to deeply understand the intrinsic mechanism of the detection of phosgene by the Pi molecule probe, which also supplies a reference to the further study about the fluorescence probe.
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7
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Treto-Suárez MA, Schott E, Mena Ulecia K, Koivisto BD, Hidalgo-Rosa Y, Páez-Hernández D, Zarate X. Understanding the Deactivating/Activating Mechanisms in Three Optical Chemosensors Based in Crown Ether with Na+/K+ Selectivity Using Quantum Chemical Tools. Chemphyschem 2022; 23:e202200188. [DOI: 10.1002/cphc.202200188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/01/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Manuel A. Treto-Suárez
- Pontificia Universidad Católica de Chile: Pontificia Universidad Catolica de Chile Departamento de Química Inorgánica CHILE
| | - Eduardo Schott
- Pontificia Universidad Católica de Chile: Pontificia Universidad Catolica de Chile Departamento de Química Inorgánica CHILE
| | - Karel Mena Ulecia
- Temuco Catholic University: Universidad Catolica de Temuco cDepartamento de Ciencias Biológicas Y Químicas CHILE
| | | | - Yoan Hidalgo-Rosa
- Pontificia Universidad Católica de Chile: Pontificia Universidad Catolica de Chile Departamento de Química Inorgánica, Facultad de Química y de Farmacia CHILE
| | | | - Ximena Zarate
- Universidad Autónoma de Chile - Campus El Llano Subercaseaux: Universidad Autonoma de Chile - Campus El Llano Subercaseaux hInstituto de Ciencias Químicas Aplicadas CHILE
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8
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Foerster A, Besley NA. Quantum Chemical Characterization and Design of Quantum Dots for Sensing Applications. J Phys Chem A 2022; 126:2899-2908. [PMID: 35502789 PMCID: PMC9125561 DOI: 10.1021/acs.jpca.2c00947] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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The ability to tune
the optoelectronic properties of quantum dots
(QDs) makes them ideally suited for the use as fluorescence sensing
probes. The vast structural diversity in terms of the composition
and size of QDs can make designing a QD for a specific sensing application
a challenging process. Quantum chemical calculations have the potential
to aid this process through the characterization of the properties
of QDs, leading to their in silico design. This is
explored in the context of QDs for the fluorescence sensing of dopamine
based upon density functional theory and time-dependent density functional
theory (TDDFT) calculations. The excited states of hydrogenated carbon,
silicon, and germanium QDs are characterized through TDDFT calculations.
Analysis of the molecular orbital diagrams for the isolated molecules
and calculations of the excited states of the dopamine-functionalized
quantum dots establish the possibility of a photoinduced electron-transfer
process by determining the relative energies of the electronic states
formed from a local excitation on the QD and the lowest QD →
dopamine electron-transfer state. The results suggest that the Si165H100 and Ge84H64 QDs have
the potential to act as fluorescent markers that could distinguish
between the oxidized and reduced forms of dopamine, where the fluorescence
would be quenched for the oxidized form. The work contributes to a
better understanding of the optical and electronic behavior of QD-based
sensors and illustrates how quantum chemical calculations can be used
to inform the design of QDs for specific fluorescent sensing applications.
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Affiliation(s)
- Aleksandra Foerster
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Nicholas A Besley
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
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9
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A chromone-based colorimetric fluorescence sensor for selective detection of Cu2+ions, and its application for in-situ imaging. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132533] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Sharma N. Schiff bases bearing amino acids for selective detection of Pb2+ ions in aqueous medium. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Ceramella J, Iacopetta D, Catalano A, Cirillo F, Lappano R, Sinicropi MS. A Review on the Antimicrobial Activity of Schiff Bases: Data Collection and Recent Studies. Antibiotics (Basel) 2022; 11:191. [PMID: 35203793 PMCID: PMC8868340 DOI: 10.3390/antibiotics11020191] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 02/01/2023] Open
Abstract
Schiff bases (SBs) have extensive applications in different fields such as analytical, inorganic and organic chemistry. They are used as dyes, catalysts, polymer stabilizers, luminescence chemosensors, catalyzers in the fixation of CO2 biolubricant additives and have been suggested for solar energy applications as well. Further, a wide range of pharmacological and biological applications, such as antimalarial, antiproliferative, analgesic, anti-inflammatory, antiviral, antipyretic, antibacterial and antifungal uses, emphasize the need for SB synthesis. Several SBs conjugated with chitosan have been studied in order to enhance the antibacterial activity of chitosan. Moreover, the use of the nanoparticles of SBs may improve their antimicrobial effects. Herein, we provide an analytical overview of the antibacterial and antifungal properties of SBs and chitosan-based SBs as well as SBs-functionalized nanoparticles. The most relevant and recent literature was reviewed for this purpose.
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Affiliation(s)
- Jessica Ceramella
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy; (J.C.); (D.I.); (F.C.); (R.L.); (M.S.S.)
| | - Domenico Iacopetta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy; (J.C.); (D.I.); (F.C.); (R.L.); (M.S.S.)
| | - Alessia Catalano
- Department of Pharmacy-Drug Sciences, University of Bari “Aldo Moro”, 70126 Bari, Italy
| | - Francesca Cirillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy; (J.C.); (D.I.); (F.C.); (R.L.); (M.S.S.)
| | - Rosamaria Lappano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy; (J.C.); (D.I.); (F.C.); (R.L.); (M.S.S.)
| | - Maria Stefania Sinicropi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy; (J.C.); (D.I.); (F.C.); (R.L.); (M.S.S.)
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12
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López-Espejel M, Gómez-Treviño A, Muñoz-Flores BM, Treto-Suarez MA, Schott E, Páez-Hernández D, Zarate X, Jiménez-Pérez VM. Organotin Schiff bases as halofluorochromic dyes: green synthesis, chemio-photophysical characterization, DFT, and their fluorescent bioimaging in vitro. J Mater Chem B 2021; 9:7698-7712. [PMID: 34586143 DOI: 10.1039/d1tb01405f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Fluorescent bioimaging is an excellent tool in cellular biology, and it will be a powerful technique in modern medicine as a noninvasive imaging technology where tumoral and normal cells must be distinguished. One of the differences between normal and cancer cells is the intracellular pH. Therefore, the design and synthesis of pH-responsive fluorescent materials are required. Organotin Schiff bases showed halofluorochromic behavior in solution. Microwave-assisted synthesis showed better reaction times and chemical yields compared with conventional heating. All compounds were fully characterized by spectroscopic and spectrometric techniques. The halofluorochromism study showed that some molecules in acidic media have the maximum luminescence intensity due to protonation. All the fluorescent tin complexes showed cell staining on hepatocyte and MCF-7 cells by confocal microscopy. The theoretical study has enabled us to rationalize the optical properties and the halofluorochromism for compounds 1 and 2 synthesized in this work. Our results showed that the emission decrease, in the acid and basic media for compounds 1 and 2, respectively, is caused by intramolecular charge transfer (ICT) deactivation.
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Affiliation(s)
- Margarita López-Espejel
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Ciudad Universitaria, Av. Universidad s/n, C.P. 66451, Nuevo León, Mexico.
| | - Alberto Gómez-Treviño
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Ciudad Universitaria, Av. Universidad s/n, C.P. 66451, Nuevo León, Mexico.
| | - Blanca M Muñoz-Flores
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Ciudad Universitaria, Av. Universidad s/n, C.P. 66451, Nuevo León, Mexico.
| | - Manuel A Treto-Suarez
- Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile.,ANID-Millennium Science Initiative Program-Millennium Nuclei on Catalytic Process Towards Sustainable Chemistry (CSC), Chile
| | - Eduardo Schott
- Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile.,ANID-Millennium Science Initiative Program-Millennium Nuclei on Catalytic Process Towards Sustainable Chemistry (CSC), Chile
| | - Dayán Páez-Hernández
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Ave. República #275, Santiago de Chile, Chile.,Center of Applied Nanosciences (CANS), Chile República #275, Santiago de Chile, Chile
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago, Chile.
| | - Víctor M Jiménez-Pérez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Ciudad Universitaria, Av. Universidad s/n, C.P. 66451, Nuevo León, Mexico.
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13
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LU XL, HE W. Research Advances in Excited State Intramolecular Proton Transfer Fluorescent Probes Based on Combined Fluorescence Mechanism. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1016/s1872-2040(20)60078-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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15
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Patil NS, Dhake RB, Ahamed MI, Fegade U. A Mini Review on Organic Chemosensors for Cation Recognition (2013-19). J Fluoresc 2020; 30:1295-1330. [DOI: 10.1007/s10895-020-02554-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/11/2020] [Indexed: 11/28/2022]
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16
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Treto-Suárez MA, Tapia J, Hidalgo-Rosa Y, Páez-Hernández D, Molins E, Zarate X, Schott E. New Sensitive and Selective Chemical Sensors for Ni 2+ and Cu 2+ Ions: Insights into the Sensing Mechanism through DFT Methods. J Phys Chem A 2020; 124:6493-6503. [PMID: 32635732 DOI: 10.1021/acs.jpca.0c03834] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the synthesis and theoretical study of two new colorimetric chemosensors with special selectivity and sensitivity to Ni2+ and Cu2+ ions over other metal cations in the CH3CN/H2O solution. Compounds (E)-4-((2-nitrophenyl)diazenyl)-N,N-bis(pyridin-2-ylmethyl)aniline (A) and (E)-4-((3-nitrophenyl)diazenyl)-N,N-bis(pyridin-2-ylmethyl)aniline (B) exhibited a drastic color change from yellow to colorless, which allows the detection of the mentioned metal cations through different techniques. The interaction of sensors with these metal ions induced a new absorption band with a hypsochromic shift to the characteristic signal of the free sensors. A theoretical study via time-dependent density functional theory (TD-DFT) was performed. This method has enabled us to reproduce the hypsochromic shift in the maximum UV-vis absorption band and explain the selective sensing of the ions. For all of the systems studied, the absorption band is characterized by a π → π* transition centered in the ligand. Instead of Ni2+ and Cu2+ ions, the transition is set toward the σ* molecular orbital with a strong contribution of the 3dx2-y2 transition (π → 3dx2-y2). These absorptions imply a ligand-to-metal charge transfer (LMCT) mechanism that results in the hypsochromic shift in the absorption band of these systems.
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Affiliation(s)
- Manuel A Treto-Suárez
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Ave. República #275, 8320000, Santiago de Chile, Chile
| | - Jorge Tapia
- Universidad Bernardo OHiggins, Facultad de Salud, Departamento de Ciencias Quı́micas y Biológicas, General Gana 1702, Santiago, Chile.,Millennium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC), Santiago, Chile
| | - Yoan Hidalgo-Rosa
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Ave. República #275, 8320000, Santiago de Chile, Chile.,Millennium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC), Santiago, Chile
| | - Dayan Páez-Hernández
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Ave. República #275, 8320000, Santiago de Chile, Chile.,Center of Applied Nanosciences (CANS), Chile República #275, 8320000, Santiago de Chile, Chile
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas, Theoretical and Computational Chemistry Center, Facultad de Ingeniería, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, 7500912, Santiago, Chile
| | - Eduardo Schott
- Departamento de Química Inorgánica, Facultad de Quı́mica y Farmacia, Centro de Energı́a UC, Centro de Investigación en Nanotecnologı́a y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, 7820244, Santiago, Chile.,Millennium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC), Santiago, Chile
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17
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Udhayakumari D, Inbaraj V. A Review on Schiff Base Fluorescent Chemosensors for Cell Imaging Applications. J Fluoresc 2020; 30:1203-1223. [PMID: 32737660 DOI: 10.1007/s10895-020-02570-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/03/2020] [Indexed: 11/29/2022]
Abstract
Fluorescent determinations of analytes have proven to be a powerful method due to their simplicity, low cost, detection limit, rapid photoluminescence response, and applicability to bioimaging. Fluorescence imaging as a powerful tool for monitoring biomolecules within the living systems. Schiff base has been extensively used as strongly absorbing and colorful chromophores in the design of chemosensors. In recent years, Schiff base based fluorescent probes have been developed for the detection of various toxic analytes and imaging of various analytes in biological systems. This review gives an overview of the important fluorescent sensors which are based on Schiff base, their approaches for molecular recognition, and their potential application in bioimaging studies.
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Affiliation(s)
| | - V Inbaraj
- Department of Chemistry, Rajalakshmi Engineering College, Chennai, 602105, India
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18
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Saravana Kumar S, Selva Kumar R, Ashok Kumar S. Development of highly selective dual mode chromogenic and fluorogenic chemosensor for Bi3+ ions. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Wang H, Qian C, Liu J, Zeng Y, Wang D, Zhou W, Gu L, Wu H, Liu G, Zhao Y. Integrating Suitable Linkage of Covalent Organic Frameworks into Covalently Bridged Inorganic/Organic Hybrids toward Efficient Photocatalysis. J Am Chem Soc 2020; 142:4862-4871. [PMID: 32073853 DOI: 10.1021/jacs.0c00054] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covalent organic frameworks (COFs) are excellent platforms with tailored functionalities in photocatalysis. There are still challenges in increasing the photochemical performance of COFs. Therefore, we designed and prepared a series of COFs for photocatalytic hydrogen generation. Varying different ratios of β-ketoenamine to imine moieties in the linkages could differ the ordered structure, visible light harvesting, and bandgap. Overall, β-ketoenamine-linked COFs exhibited much better photocatalytic activity than those COFs having both β-ketoenamine and imine moieties on account of a nonquenched excited state and more favorable HOMO level in the photoinduced oxidation reaction from the former. Specifically, after in situ growth of β-ketoenamine-linked COFs onto NH2-Ti3C2Tx MXene via covalent connection, the heterohybrid showed an obvious improvement in photocatalytic H2 evolution because of strong covalent coupling, electrical conductivity, and efficient charge transfer. This integrated linkage evolution and covalent hybridization approach advances the development of COF-based photocatalysts.
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Affiliation(s)
- Hou Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Cheng Qian
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Jia Liu
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Yongfei Zeng
- College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Dongdong Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Weiqiang Zhou
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Long Gu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hongwei Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Guofeng Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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