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Chowdhury A, Dasgupta S, Gaur N, Shukla A, Adhyapak P, Kabra D, Datta A. Modulation of fluorescence and phosphorescence of organoboron compounds from ortho-substituted phenolic Schiff bases by structural modification. Photochem Photobiol 2024; 100:1089-1099. [PMID: 38801138 DOI: 10.1111/php.13965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/20/2024] [Accepted: 04/30/2024] [Indexed: 05/29/2024]
Abstract
Light emission from organoboron compounds of Schiff bases is found to depend strongly on their chemical structure. Two of these compounds (OB1 and OB2), which contain a benzene ring between the Schiff base moieties, exhibit weak fluorescence in methanol, with marked viscosity dependence. Fluorescence lifetimes of these compounds are in picosecond timescale, as determined by femtosecond optical gating (FOG). A significant enhancement in fluorescence intensity and lifetime is observed at 77 K, indicating the operation of an activated nonradiative process. Using fluorescence lifetime imaging microscopy (FLIM), OB1 and OB2 are shown to be potential membrane probes. The third (OB3), which is devoid of this benzene ring, exhibits relatively stronger fluorescence with nanosecond lifetimes at room temperature. No viscosity dependence is observed in this case. The emission spectrum at 77 K is markedly more intense and exhibits an additional red shifted structured feature, which persists for a few seconds. Hence, OB3 seems to have greater promise not only as fluorescent probe but also for light harvesting. The marked improvement of the light emission properties of OB3 compared with OB1 and OB2 is likely to serve as a pointer for the design of Schiff base-derived organoboron luminophores with diverse potential applications.
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Affiliation(s)
- Arkaprava Chowdhury
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Souradip Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Nrita Gaur
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
| | - Aparna Shukla
- Department of Chemistry & Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Dhanbad, India
| | - Pranav Adhyapak
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Dinesh Kabra
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
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Sakshi S, Dey S, Chowdhury S, Ray S. Characterization of a Zeolite-Y-Encapsulated Zn(II)Salmphen Complex with Targeted Anticancer Property. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55518-55532. [PMID: 38010148 DOI: 10.1021/acsami.3c13955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Resistance and severe side effects of classical chemotherapeutic drugs are major challenges to cancer therapy. New therapeutic agents and combination therapy are considered potential solutions that enhance the efficacy of the drug as well as reduce drug resistance. The success of a platinum-based anticancer drug, cisplatin, has paved the way to explore metal-centered anticancer therapeutic agents. Herein, the zeolite-Y-encapsulated Zn(II)Salmphen complex is synthesized using a flexible ligand approach. The Zn(II)Salmphen complex and its encapsulation within the supercage of zeolite-Y were characterized by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, UV-vis, fluorescence, powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), NMR, and high-resolution mass spectrometry (HRMS) techniques. Elemental analysis, PXRD, and SEM, all together confirm the integrity of the zeolite framework after the encapsulation of Zn(II)Salmphen complex in it, and elemental analysis provides the Si/Al ratio and Zn content present. FTIR and XPS studies indicate the successful encapsulation of the complex. NMR and HRMS studies confirm that the Zn(II)Salmphen complex is dimer; however, within the supercage of zeolite-Y, it is expected to exist as a monomer. The extent of structural modification of the encapsulated Zn(II)Salmphen complex is intimated by electronic spectroscopic studies. The free-state Zn(II)Salmphen is a fluorescent complex, and even the encapsulated Zn(II)Salmphen complex, when taken in dimethyl sulfoxide (DMSO), shows fluorescence. In comparison to cisplatin, encapsulated Zn(II)Salmphen complex displays comparable cytotoxicity (IC50 = 2.0 ± 0.5 μg/mL at 48 h) toward breast cancer cell line, whereas free Zn(II)Salmphen has better cytotoxicity (IC50 = 1.5 ± 0.5 μg/mL at 48 h). Importantly, elemental analysis has revealed that the IC50 value, if calculated only in terms of Zn(II)Salmphen within Zn(II)Salmphen-Y, is as low as 54.59 ng/mL, indicating a very high efficacy of the drug. Interestingly, a 48 h treatment with the encapsulated Zn(II)Salmphen complex shows no toxicity toward immortal noncancerous keratinocyte cells (HaCaT), whereas cisplatin has an IC50 value of 1.75 ± 0.5 μg/mL. Internalization studies indicate that zeolite-Y targets cancer cells better than it does noncancerous ones. Hence, cellular uptake of the zeolite-encapsulated Zn(II)Salmphen complex in cancer cells is more than that in HaCaT cells, resulting in the generation of more reactive oxygen species and cell death. Significant upregulation of DNA damage response protein indicates that DNA-damage-induced cellular apoptosis could be the mechanism of drug action. Overall, the zeolite-encapsulated Zn(II)Salmphen complex could be a better alternative to the traditional drug cisplatin with minimal effect on noncancerous HaCaT cells and can also be utilized as a fluorescent probe in exploring the mechanistic pathway of its activity against cancer cells.
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Kistwal T, Dasgupta S, Chowdhury A, Datta A. Disruption of aggregates of a Zn2+-complex of a schiff base in water by surfactants: Insights from fluorescence spectroscopy in ensemble and single molecule levels. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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4
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A Ratiometric, Turn-on Chromo-fluorogenic Sensor for Sequential Detection of Aluminium Ions and Picric acid. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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Dasgupta S, Chowdhury A, Sahoo DK, Datta A. Interplay of conformational relaxation and hydrogen bond dynamics in the excited states of fluorescent Schiff base anions. Phys Chem Chem Phys 2022; 25:304-313. [PMID: 36477682 DOI: 10.1039/d2cp05007b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Time resolved fluorescence spectroscopic investigation of four Schiff base anions has established that their excited state dynamics is governed by several solvent properties: polarity, viscosity and hydrogen bond donating ability. With viscous protic solvents like glycerol, fluorescence lifetimes of anions have been found to be markedly longer than those in ethanol, implying that conformational relaxation of molecules plays a key role in their nonradiative relaxation. Surprisingly, the lifetimes in less viscous aprotic solvents, like acetonitrile, are found to be even longer. The only plausible rationalization of this observation is in the light of hydrogen bond-assisted nonradiative phenomena that are operative in protic solvents. This contention draws support from a time evolution of the emission in the red end of the spectrum in low to moderately hydrogen bond donating protic solvents, with regard to an absence of such a rise time in aprotic solvents and strongly hydrogen bond donating solvents, viz., 2,2,2-trifluoroethanol. Rudimentary quantum chemical calculations provide a preliminary idea about the nature of excited state hydrogen bond redistribution involved in the process.
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Affiliation(s)
- Souradip Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Arkaprava Chowdhury
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Dipak Kumar Sahoo
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
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Efficient electrochemical water oxidation mediated by different substituted manganese-salophen complexes. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Roy S, Kundu S, Saha S, Muddukrishnaiah K, Pramanik R, Biswas B. Visible light‐triggered Pyrazole‐Functionalized Reversible Ionophore for Selective Monitoring of Aluminium (III) ion. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Suvojit Roy
- Department of Chemistry University of North Bengal Darjeeling India
| | - Subhankar Kundu
- Department of Chemistry University of North Bengal Darjeeling India
| | - Subhajit Saha
- Department of Chemistry University of North Bengal Darjeeling India
| | | | - Rajib Pramanik
- Department of Chemistry Berhampore Girls’ College Berhampore India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling India
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Excited state dynamics of Zn-salophen complexes. Photochem Photobiol Sci 2022; 21:923-934. [PMID: 35088368 DOI: 10.1007/s43630-021-00165-0] [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: 10/04/2021] [Accepted: 12/27/2021] [Indexed: 10/19/2022]
Abstract
Zn-salophen complexes are a promising class of fluorescent chemosensors for nucleotides and nucleic acids. We have investigated, by means of steady state UV-Vis, ultrafast transient absorption, fluorescence emission and time dependent density functional theory (TD-DFT) the behavior of the excited states of a salicylidene tetradentate Schiff base (Sal), its Zn(II) coordination compound (Zn-Sal) and the effect of the interaction between Zn-Sal and adenosine diphosphate (ADP). TD-DFT shows that the deactivation of the excited state of Sal occurs through torsional motion, due to its rotatable bonds and twistable angles. Complexation with Zn(II) causes rigidity so that the geometry changes in the excited states with respect to the ground state structure are minimal. By addition of ADP to a freshly prepared Zn-Sal ethanol solution, a longer relaxation constant, in comparison to Zn-Sal, was measured, indicative of the interaction between Zn-Sal and ADP. After a few days, the Zn-Sal-ADP solution displayed the same static and dynamic behavior of a solution containing only the Sal ligand, demonstrating that the coordination of the ADP anion to Zn(II)leads to the demetallation of the Sal ligand. Fluorescence measurements also revealed an enhanced fluorescence at 375 nm following the addition of ADP to the solution, caused by the presence of 2,3-diamino naphthalene that is formed by demetallation and partial decomposition of the Sal ligand. The efficient fluorescence of this species at 375 nm could be selectively detected and used as a probe for the detection of ADP in solution.
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Dasgupta S, Banerjee S, Das S, Datta A. From fluorogens to fluorophores by elucidation and suppression of ultrafast excited state processes of a Schiff base. Phys Chem Chem Phys 2021; 23:19494-19502. [PMID: 34524318 DOI: 10.1039/d1cp02540f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Strategies have been explored for developing strongly fluorescent species out of a weakly fluorescent Schiff base, 2-(((pyridin-2-ylmethyl)imino)methyl)phenol (salampy). The locally excited enolic state of salampy undergoes an intramolecular proton transfer with a time constant of ca. 200 fs. The emissive cis keto state thus formed decays completely within 50 ps. Its fast decay and miniscule fluorescence quantum yield are attributed to efficient non-radiative channels associated with conformational relaxation. The anionic form, salampy-, has a significantly longer fluorescence lifetime of 800 ps. Its emissive state evolves in tens of picoseconds, from the locally excited state, by solvent and conformational relaxation. Both the neutral and anionic forms have a fluorescence lifetime of about 6 ns at 77 K, a temperature at which all activated nonradiative channels are blocked. This lifetime is similar to that obtained at room temperature, upon rigidification of the anion by complexation with Zn2+. Two such complexes have been studied. The first is binuclear, with acetate bridge between the two Zn2+ ions. The second, with ClO4- as the counterion, is mononuclear with two salampy ligands ligating the metal ion. Unlike a previous report on a different Schiff base, in which the ligands are π-stacked in its dimeric Zn2+ complex, no additional nonradiative deactivation pathway opens up in the Zn complexes of salampy, which are devoid of such stacking. The complex of salampy with Al3+ has an even longer fluorescence lifetime of 9 ns, indicating a greater degree of rigidification and consequent suppression of nonradiative processes.
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Affiliation(s)
- Souradip Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| | - Shrobona Banerjee
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Bhopal Bypass Rd, Bhauri, Madhya Pradesh 462066, India
| | - Sharmistha Das
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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Hu T, Wang L, Li J, Zhao Y, Cheng J, Li W, Chang Z, Sun C. A new fluorescent sensor L based on fluorene-naphthalene Schiff base for recognition of Al3+ and Cr3+. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120421] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Dasgupta S, Chowdhury A, Datta A. Time evolution of the solvated and conformationally relaxed emissive excited state of the anionic form of salophen, a Schiff base. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Miao LP, Qi Q, Han XB, Zhang W. DCM self-trapping by the host deformation in flexible host–guest molecules. CrystEngComm 2021. [DOI: 10.1039/d1ce00301a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The desolvated structure can self-trap the DCM molecules to return to the 1·DCM state via ligand deformation even under weak host–guest interactions. The capture behavior of DCM is mostly due to the flexibility of the ligand.
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Affiliation(s)
- Le-Ping Miao
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Qi Qi
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Xiang-Bin Han
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Wen Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
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Vogler A, Bodensteiner M. Synthesis, crystal structure and photoluminescence of a binuclear rhenium(I) carbonyl complex incorporated in a framework of a distorted salophen ligand. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2020. [DOI: 10.1515/znb-2019-0211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Re(CO)5Cl reacts with salophenH2 to yield Re(I)2(salophenH)(CO)6Cl. A crystal structure determination has shown that this binuclear complex contains two Re(CO)3 fragments which are bridged by a chloride and a heavily constrained salophenH– anion as ligands. Under ambient conditions in solution and in the solid state, the complex displays an orange emission which originates from the lowest-energy IL/MLCT triplet. In solution, this phosphorescence is completely quenched by oxygen.
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Affiliation(s)
- Arnd Vogler
- Institute of Inorganic Chemistry, University of Regensburg , Universitätsstr. 31 , 93053 Regensburg , Germany
| | - Michael Bodensteiner
- Institute of Inorganic Chemistry, University of Regensburg , Universitätsstr. 31 , 93053 Regensburg , Germany
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Lasitha P, Dasgupta S, Naresh Patwari G. Unraveling the Origin of Differentiable 'Turn-On' Fluorescence Sensing of Zn 2+ and Cd 2+ Ions with Squaramides. Chemphyschem 2020; 21:1564-1570. [PMID: 32488932 DOI: 10.1002/cphc.202000332] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/01/2020] [Indexed: 11/09/2022]
Abstract
A squaramide ring conjugated with Schiff-bases decorated with hydroxy and methoxy functional groups differentially senses zinc and cadmium ions, which turn on the fluorescence. The feebly emitting free ligands light up in the presence of zinc and cadmium acetates, with the acetate ion playing a pivotal role as a conjugate anion. The selective and differentiable emission responses for zinc and cadmium ions make these ligands efficient multi-analyte sensing agents. Furthermore, these ligands could be used to differentially sense zinc and cadmium ions even in aqueous environments. The NMR investigations reveal marginal differences in the binding of zinc and cadmium ions to the ligands, whereas density functional theory calculations suggest the different extent of ligand-to-metal charge transfer (LMCT) contributes to the differential behavior. Finally, comparison of the excited-state dynamics of free ligand and the metal complexes reveal the appearance of longer lifetime (about 500-700 ps) component with complexation, due to rigidified molecular skeleton, thereby impeding the non-radiative processes.
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Affiliation(s)
- P Lasitha
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - S Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - G Naresh Patwari
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
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15
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Cakmak D, Bulut T, Uzun D. Electrocatalytic Investigations of Cu(II) and Fe(III) Complexes of Salophen Derivative Schiff Bases on the Pencil Graphite Electrode. ELECTROANAL 2020. [DOI: 10.1002/elan.202000053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- D. Cakmak
- Department of ChemistryFaculty of Arts and Sciences, Mustafa Kemal University 31040 Hatay TURKEY
| | - T. Bulut
- Department of ChemistryFaculty of Arts and Sciences, Mustafa Kemal University 31040 Hatay TURKEY
| | - D. Uzun
- Department of ChemistryFaculty of Science, Gazi University Ankara TURKEY
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Ponnusamy K, Ramamurthy K, Chellappan S. Thermal-Induced Twisting and Photoinduced Planarization of Salicylideneaniline in Alcohols. J Phys Chem A 2020; 124:1885-1895. [PMID: 32077297 DOI: 10.1021/acs.jpca.9b09526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thermofluorochromism and photochromism of salicylideneaniline (SA) in alcohol were investigated using steady-state and time-resolved fluorescence and absorption spectroscopy. The planar trans-enol form of SA in alcohols is converted into the twisted trans-enol form on heating. This conversion results change in the emission maximum from the 530 to the 440 nm region with an increase in fluorescence intensity, which confirms the absence of intramolecular hydrogen bonding between imine nitrogen and phenolic hydrogen in the twisted trans-enol form. The activation barrier for thermal-induced formation of the twisted trans-enol form in methanol was determined experimentally and was found to be 20.15 ± 2.22 kcal/mol. The rotation of the phenolic C7-C8 and C7-N1 bond followed by breaking of the intramolecular hydrogen bond and formation of an intermolecular hydrogen bond with alcohol solvent molecules results in the thermally stable twisted trans-enol form in alcohol solvents. The biexponential nature of the fluorescence decay of the twisted trans-enol form of SA confirms that the emission originates from multiple (π-π* and n-π*) excited states. On photolysis under UV light, the twisted trans-enol form is converted back into the planar trans-enol form. The time-resolved absorption and excitation-resolved fluorescence spectrum of SA in methanol confirm the existence of the twisted cis-keto form as a transient photochromic intermediate in the light-induced planarization of SA in alcohols. In alcohols, an interplay between the intra- and intermolecular hydrogen-bonding controls excited-state reaction dynamics and conformational relaxation of SA, which are responsible for the photochromism of salicylideneaniline.
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Affiliation(s)
- Karunakaran Ponnusamy
- National Centre for Ultrafast Processes, University of Madras, Chennai 600 113 Tamil Nadu, India
| | - Kannan Ramamurthy
- National Centre for Ultrafast Processes, University of Madras, Chennai 600 113 Tamil Nadu, India
| | - Selvaraju Chellappan
- National Centre for Ultrafast Processes, University of Madras, Chennai 600 113 Tamil Nadu, India
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Pramanik S, Manna SK, Pathak S, Mondal D, Pal K, Mukhopadhyay S. Chromogenic and fluorogenic “off–on–off” chemosensor for selective and sensitive detection of aluminum (Al3+) and bifluoride (HF2−) ions in solution and in living Hep G2 cells: synthesis, experimental and theoretical studies. NEW J CHEM 2020. [DOI: 10.1039/d0nj02117b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple pyridine-dicarbohydrazide based colorimetric and fluorometric chemosensor L was designed and synthesized for Al3+ ion sensing in organo aqueous solution.
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Affiliation(s)
- Samit Pramanik
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Saikat Kumar Manna
- Department of Chemistry
- Haldia Government College
- Debhog
- Purba Medinipur
- India
| | - Sudipta Pathak
- Department of Chemistry
- Haldia Government College
- Debhog
- Purba Medinipur
- India
| | - Debasish Mondal
- School of Chemistry and Biochemistry
- Thapar Institute of Engineering and Technology
- Patiala 147004
- India
| | - Kunal Pal
- Department of Life Science and Biotechnology
- Jadavpur University
- Kolkata 700032
- India
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18
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Optical, electrochemical, thermal, biological and theoretical studies of some chloro and bromo based metal-salophen complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127107] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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19
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Aydin D. A novel turn on fluorescent probe for the determination of Al 3+ and Zn 2+ ions and its cells applications. Talanta 2019; 210:120615. [PMID: 31987182 DOI: 10.1016/j.talanta.2019.120615] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/29/2019] [Accepted: 12/02/2019] [Indexed: 12/15/2022]
Abstract
Early detection of probes is very important for limiting toxic effects of various transition metal ions for example aluminum and zinc. Monitoring of these metal ions can be challenging via conventional methods since they are high cost instrumentations, time consuming and so on. We report facile preparation of a fluorescence probe containing biphenyl groups that effectively selective and superb sensitivity towards aluminum (III) and zinc (II) in neutral solutions without interference from each other and other ions. In neutral pH value, the probe FOB displayed the OFF-ON fluorescence enhancement at 464 nm and 512 nm toward aluminum (III) and zinc (II), respectively. The detection limit values of FOB for Al3+ and Zn2+ in neutral solutions were 1.27 and 1.02 nM, respectively and these values were significantly lower than permitted Al3+ and Zn2+ concentrations in drinking water determined by the World Health Organization (WHO) and European Water Quality. Also, fabricated cyano-biphenyl based probe is effective for sensing for aluminum (III) and zinc (II) in living human colon cancer cells even when employed at low concentrations (1.0 μM). Overall, this work allows us to obtain a great potential to be applied to detect Al3+ and Zn2+.
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Affiliation(s)
- Duygu Aydin
- Karamanoglu Mehmetbey University, Kamil Ozdag Science Faculty, Department of Chemistry, Karaman, 70100, Turkey.
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20
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Shi Z, Zhao Z. Microwave irradiation synthesis of novel indole triazole Schiff base fluorescent probe for Al3+ ion. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119135] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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21
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Kumar V, Kumar P, Kumar S, Singhal D, Gupta R. Turn-On Fluorescent Sensors for the Selective Detection of Al 3+ (and Ga 3+) and PPi Ions. Inorg Chem 2019; 58:10364-10376. [PMID: 31342750 DOI: 10.1021/acs.inorgchem.9b01550] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rationally designed multiple hydroxyl-group-based chemosensors L1-L4 containing arene-based fluorophores are presented for the selective detection of Al3+ and Ga3+ ions. Changes in the absorption and emission spectra of L1-L4 in ethanol were easily observable upon the addition of Al3+ and Ga3+ ions. Competitive binding studies, detection limits, and binding constants illustrate significant sensing abilities of these chemosensors with L4, showing the best results. The interaction of Al3+/Ga3+ ions with chemosensor L4 was investigated by fluorescence lifetime measurements, whereas Job's plot, high-resolution mass spectrometry, and 1H NMR spectral titrations substantiated the stoichiometry between L4 and Al3+/Ga3+ ions. The solution-generated [L-M3+] species further detected pyrophosphate ion (PPi) by exhibiting emission enhancement and a visible color change. The binding of Al3+/Ga3+ ions with chemosensor L4 was further supported by density functional theory studies. Reversibility for the detection of Al3+/Ga3+ ions was achieved by utilizing a suitable proton source. The multiionic response, reversibility, and optical visualization of the present chemosensors make them ideal for practical applications for real samples, which have been illustrated by paper-strip as well as polystyrene film-based detection.
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Affiliation(s)
- Vijay Kumar
- Department of Chemistry , University of Delhi , New Delhi 110007 , India
| | - Pramod Kumar
- Department of Chemistry , University of Delhi , New Delhi 110007 , India
| | - Sushil Kumar
- Department of Chemistry , University of Delhi , New Delhi 110007 , India
| | - Divya Singhal
- Department of Chemistry , University of Delhi , New Delhi 110007 , India
| | - Rajeev Gupta
- Department of Chemistry , University of Delhi , New Delhi 110007 , India
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Structural, photophysical and electrochemical properties of a novel cardanol-based salophen ligand and its Mn(II) complex. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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23
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Tian H, Qiao X, Zhang ZL, Xie CZ, Li QZ, Xu JY. A high performance 2-hydroxynaphthalene Schiff base fluorescent chemosensor for Al 3+ and its applications in imaging of living cells and zebrafish in vivo. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 207:31-38. [PMID: 30195183 DOI: 10.1016/j.saa.2018.08.063] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/20/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
Developing high performance fluorescent chemo-sensors for in vitro and in vivo Al3+ detection is highly desirable, because Al3+ accumulation has been involved to various diseases. Herein, we report a highly selective and sensitive Schiff base fluorescent probe, H3L, based on 2-hydroxynaphthalene, which can recognize aluminum ions and exhibit an "off-on" mode with high selectivity in methanol solutions. The detection limit of the probe for Al3+ is as low as 10-7 M which was determined by fluorescent titration. The high selectivity and high sensitivity of H3L for Al3+ are attributed to the inhibition of ESIPT. Additionally, the distribution of intracellular Al3+ ions could be observed under confocal fluorescence microscopy. Moreover, we also applied H3L for in vivo detection of Al3+ ions in living zebrafish larvae.
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Affiliation(s)
- He Tian
- Department of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Xin Qiao
- Department of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Zhen-Lei Zhang
- Department of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Cheng-Zhi Xie
- Department of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China
| | - Qing-Zhong Li
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, PR China
| | - Jing-Yuan Xu
- Department of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, PR China.
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24
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Bizzarri C, Spuling E, Knoll DM, Volz D, Bräse S. Sustainable metal complexes for organic light-emitting diodes (OLEDs). Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.011] [Citation(s) in RCA: 210] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Maar RR, Gilroy JB. Group 13 Complexes of Chelating N2O2n−Ligands as Hybrid Molecular Materials. Chemistry 2018; 24:12449-12457. [DOI: 10.1002/chem.201800354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/17/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Ryan R. Maar
- Department of Chemistry and the Centre for Advanced Materials, and Biomaterials Research (CAMBR); The University of Western Ontario; 1151 Richmond St. N. London Ontario N6A 5B7 Canada
| | - Joe B. Gilroy
- Department of Chemistry and the Centre for Advanced Materials, and Biomaterials Research (CAMBR); The University of Western Ontario; 1151 Richmond St. N. London Ontario N6A 5B7 Canada
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26
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Singh AK, Das S, Karmakar A, Kumar A, Datta A. Solvation and hydrogen bonding aided efficient non-radiative deactivation of polar excited state of 5-aminoquinoline. Phys Chem Chem Phys 2018; 20:22320-22330. [PMID: 30124696 DOI: 10.1039/c8cp03590c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The mechanism of efficient fluorescence quenching of 5-aminoquinoline in alcoholic solvents.
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Affiliation(s)
- Avinash Kumar Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sharmistha Das
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Abhoy Karmakar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Anuj Kumar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Anindya Datta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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27
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Banerjee S, Gupta A, Srivastava R, Datta A. Temperature dependent excited state dynamics in dual emissive CdSe nano-tetrapods. Phys Chem Chem Phys 2018; 20:4200-4207. [DOI: 10.1039/c7cp06954e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Excited state dynamics of dual emissive CdSe nano-tetrapods has been studied over several decades of time and broad range of temperature.
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Affiliation(s)
- Sucheta Banerjee
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400 076
- India
| | - Ashutosh Gupta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400 076
- India
| | - Rohit Srivastava
- Department of Biosciences and Bio Engineering
- Indian Institute of Technology Bombay
- Mumbai-400 076
- India
| | - Anindya Datta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400 076
- India
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28
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Khan T, Datta A. Enhanced fluorescence with nanosecond dynamics in the solid state of metal ion complexes of alkoxy salophens. Phys Chem Chem Phys 2017; 19:30120-30127. [DOI: 10.1039/c7cp05429g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Incorporation of an alkoxy moiety dramatically alters the photophysics and molecular packing of aluminum complexes of salophen leading to enhanced emission in the solid state.
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Affiliation(s)
- Tuhin Khan
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai-400076
- India
| | - Anindya Datta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai-400076
- India
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29
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Singh AK, Das S, Datta A. A case study on the myth of emission from aliphatic amides. Methods Appl Fluoresc 2016; 4:047003. [DOI: 10.1088/2050-6120/4/4/047003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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