1
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Homocianu M, Hamciuc E, Hamciuc C. Sensing of Co 2+ and Cu 2+ Ions Using Dimethylamino-functionalized Poly(azomethine-1,3,4-oxadiazole)s. J Fluoresc 2024:10.1007/s10895-024-03772-z. [PMID: 38836974 DOI: 10.1007/s10895-024-03772-z] [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: 03/07/2024] [Accepted: 05/14/2024] [Indexed: 06/06/2024]
Abstract
The ability of OxT and OxFl azomethines to recognize metal ions in THF solutions was investigated using UV-vis absorption techniques. Various metal ions, including Cd2+, Hg2+, Co2+, Sn2+, Cu2+, Ni2+, Zn2+ and Ag+, were tested. The absorption spectra revealed two distinct π-π* transition bands in the 273-278 nm and 330-346 nm wavelength ranges. Additionally, OxFl displayed an absorption peak at 309 nm, attributed to the fluorene group. Spectral titrations were used to study the fluorescence behavior in the presence of these metal ions. The results showed significant quenching with Co2+ and Cu2+ ions, while other metal ions had minimal effects on the fluorescence intensity. The quenching mechanism was further analyzed using the Stern-Volmer and Lehrer equations, and the binding constants ( K b fl ) were calculated using the Benesi-Hildebrand relations. The results confirm that Co2+ has a 1:2 stoichiometry and Cu2+ has a 1:1 stoichiometry, indicating the strong affinity of OxFl and OxT for these ions. The negative values of ΔG (Gibbs free energy) suggest that complex formation occurs spontaneously at room temperature.
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Affiliation(s)
- Mihaela Homocianu
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | - Elena Hamciuc
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania
| | - Corneliu Hamciuc
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania
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2
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Bhardwaj K, Anand T, Jangir R, Sahoo SK. Improving Copper(II) Sensitivity by Combined use of AIEE Active and Inactive Schiff Bases. J Fluoresc 2024; 34:1065-1074. [PMID: 37452963 DOI: 10.1007/s10895-023-03347-4] [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: 06/23/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
An aggregation-induced emission enhancement (AIEE) active Schiff base PNN was synthesized by condensing benzidine with 2-hydroxynaphthaldehyde. The green-fluorescent PNN (λem = 510 nm) in DMF turned to yellow-fluorescent PNN (λem = 557 nm) upon increasing the fractions of HEPES buffer (10 mM, pH 7.4) above 40%. The DLS study supports the self-aggregation of PNN that restricts the intramolecular rotation and activates the excited-state intramolecular proton transfer (ESIPT) process. The fluorescence emission of AIEE active PNN was quenched by Cu2+ with an estimated detection limit of 2.1 µM. Interestingly, the detection limit of PNN towards Cu2+ was improved in the presence of an AIEE inactive Schiff base PBPM obtained by reacting 1,4-diaminobenzene with pyridine-4-carbaldehyde. The mixed PNN-PBPM showed a detection limit of 0.49 µM. The practical utility of PNN-PBPM was validated by quantifying Cu2+ ions in real environmental water samples and green tea.
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Affiliation(s)
- Kanishk Bhardwaj
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat, 395007, Gujarat, India
| | - Thangaraj Anand
- Department of Chemistry, Sathyabama Institute of Science and Technology, Chennai, 600119, India
| | - Ritambhara Jangir
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat, 395007, Gujarat, India
| | - Suban K Sahoo
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat, 395007, Gujarat, India.
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3
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Patel DA, Anand T, Selvam P, Sahoo SK. Aggregation-induced Emission Active Naphthalimide Derived Schiff Base for Detecting Cu 2+ and Its Applications. J Fluoresc 2024; 34:359-366. [PMID: 37266835 DOI: 10.1007/s10895-023-03287-z] [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: 05/08/2023] [Accepted: 05/25/2023] [Indexed: 06/03/2023]
Abstract
Herein, an aggregation-induced emission (AIE) active Schiff base (NHS) was synthesized by condensing naphthalimide hydrazide with salicylaldehyde. The non-fluorescent solution of NHS in DMSO turned to emissive NHS upon increasing the HEPES fraction in DMSO from 70 to 95%. The UV-Vis absorption and DLS studies supported the self-aggregation of NHS that restricted the intramolecular rotation and activated the ESIPT process. The blue fluorescence of AIE luminogen NHS in DMSO:HEPES (5:95, v/v, pH = 7.4) was examined by adding different metal ions (Al3+, Ca2+, Cd2+, Co2+, Cu2+, Cr2+, Fe2+, Fe3+, Hg2+, Mg2+, Mn2+, Ni2+, Pb2+ and Zn2+). NHS showed a selective fluorescence switch-off response for Cu2+ due to the chelation enhancement quenching effect (CHEQ). The quenching of NHS by Cu2+ was explored by using density functional theory (DFT) and Stern-Volmer plot. The practical utility of NHS was examined by quantitative and qualitative analysis of Cu2+ in real water samples.
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Affiliation(s)
- Dhvani A Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, 395007, Surat, Gujarat, India
| | - Thangaraj Anand
- Department of Chemistry, Sathyabama Institute of Science and Technology, Chennai, 600119, India
| | - Pravinkumar Selvam
- Department of Chemistry, School of Advance Sciences, Vellore Institute of Technology, 632014, Vellore, Tamil Nadu, India
| | - Suban K Sahoo
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, 395007, Surat, Gujarat, India.
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4
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Li Y, Wang L, Wang L, Zhu B, Ma J. A novel carbazole-based fluorometric and colorimetric sensor for the highly sensitive and specific detection of Cu 2+ in aqueous solution. RSC Adv 2023; 13:33276-33287. [PMID: 37964909 PMCID: PMC10641437 DOI: 10.1039/d3ra04571d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 11/02/2023] [Indexed: 11/16/2023] Open
Abstract
Based on the typical Suzuki coupling reaction and Schiff base reaction, a novel fluorescent molecular PCBW is synthesized and applied as a fluorescence and colorimetric sensor to detect Cu2+ in aqueous solution. The PCBW sensor presents the aggregation-caused quenching (ACQ) effect and at 1 × 10-5 mol L-1 it emits the strongest turquoise fluorescence in the DMSO-H2O system (fw = 40%). The sensor exhibits a 'turn-off' fluorescent characteristic by adding Cu2+, and its fluorescent intensity shows a reliable linear relationship with the Cu2+ concentration in the range of 0-6 × 10-6 mol L-1, with a detection limit of 1.19 × 10-8 mol L-1. Meanwhile, the PCBW sensor also exhibits the colorimetric sensing from colorless to light yellow. The sensor has good selectivity and anti-interference and its pH application range can be extended from 5 to 10. The intramolecular charge transfer (ICT) is speculated as the main fluorescence mechanism of PCBW. In addition, the sensor presents good reusability and is practicable to detect Cu2+ in diverse aqueous samples.
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Affiliation(s)
- Yiduo Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Luyue Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Liqiang Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Baokun Zhu
- School of Materials and Chemistry, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Jie Ma
- School of Materials and Chemistry, University of Shanghai for Science and Technology Shanghai 200093 P. R. China
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5
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Park SJ, Patil M, Yeom GS, Bendre R, Kuwar A, Nimse SB. A dual-function fluorescence 'turn-on' probe that allows Zn (II) bioimaging and quantification of water in the organic solvent. Methods 2023; 218:84-93. [PMID: 37536375 DOI: 10.1016/j.ymeth.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/11/2023] [Accepted: 07/23/2023] [Indexed: 08/05/2023] Open
Abstract
Herein, a Eugenol-derived fluorescence 'turn-on' probe FLHE was synthesized by condensing 2-((3-(trifluoromethyl)phenyl)amino)benzohydrazide with 5-allyl-2-hydroxy-3-methoxybenzaldehyde. FLHE demonstrated very low fluorescence in the studied organic solvents of varying polarities. However, upon titration with Zn2+ in HEPES buffer (pH = 7.4, 50% ACN, v/v), FLHE showed 40-fold higher fluorescence signals indicating the formation of the FLHE-Zn2+ complex. The fluorescence turn-on phenomenon upon FLHE-Zn2+ complex formation results from a chelation-enhanced fluorescence (CHEF) effect. The FLHE-Zn2+ complexation demonstrated a stokes shift of 156 nm (λex = 350 nm, λem = 506 nm) and an about 33-fold increase in the quantum yield (FLHE, Φ = 0.007; FLHE-Zn2+ complex, Φ = 0.23). The binding constant (Ka) determined by the Benesi-Hildebrand plot for interaction between FLHE and Zn2+ was 5.33 × 103 M-1. FLHE demonstrated a LOD of 31.8 nM for detecting Zn2+ in the environmental samples without interference from other cations and anions. FLHE-based paper strip (FLHE-PS) assay was developed to quantify the Zn2+ ions in water and the water content of organic solvent. FLHE-PS allows the detection of Zn2+ in aqueous solutions with a LOD of 63.2 nM and quantifying water in acetonitrile with a LOD of 0.14%. These results indicate that the FLHE has high applicability for detecting Zn2+ in living cells and environmental samples and detecting the presence of water in the organic solvents.
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Affiliation(s)
- Su Jeong Park
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 24252, Republic of Korea
| | - Manohar Patil
- School of Chemical Science, North Maharashtra University, Jalgaon 425001, India
| | - Gyu Seong Yeom
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 24252, Republic of Korea
| | - Ratnamala Bendre
- School of Chemical Science, North Maharashtra University, Jalgaon 425001, India
| | - Anil Kuwar
- School of Chemical Science, North Maharashtra University, Jalgaon 425001, India.
| | - Satish Balasaheb Nimse
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 24252, Republic of Korea.
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6
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Chen M, Zhong M, Huang S, Chen Y, Cao F, Hu H, Huang W, Ji D, Zhu M. α-Cyanostilbene-based sensor with “AIE and ESIPT” features emitting long-wavelength intense red-fluorescence for highly selective and sensitive detection of Cu2+. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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7
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Singh G, Devi A, Malik P, Khurana S, Stanzin J, Sharma D. Bis-triazole linked organosilane based sensing platform for Cu 2+ ions and insilico tyrosinase inhibitor activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122854. [PMID: 37196553 DOI: 10.1016/j.saa.2023.122854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/15/2023] [Accepted: 05/09/2023] [Indexed: 05/19/2023]
Abstract
The development of a ligand for their selective and sensitive detection is required due to the widespread use of Cu2+ in many industrial processes and the potential threat to human health. Herein, we report a bis-triazole linked organosilane (5) derived from the Cu(I) catalyzed azide-alkyne cycloaddition reaction. The synthesized compound 5 was characterized by (1H and 13C) NMR spectroscopic and mass spectrometry techniques. The UV-Visible and Fluorescence experiments of the designed compound 5 were performed with various metal ions, revealing its high selectivity and sensitivity to Cu2+ ions in MeOH: H2O (8:2, v/v, pH = 7.0, PBS buffer) solution. The selective fluorescence quenching upon addition of Cu2+ to the compound 5 is due to Photo-induced electron transfer process (PET). The limit of detection of compound 5 to Cu2+ was calculated as 2.56 × 10-6 M and 4.36 × 10-7 M through UV-Visible and Fluorescence titration data, respectively. The possible mechanism of 1:1 binding of 5 with Cu2+ could be affirmed by the density functional theory (DFT). Further, it was found that compound 5 showed a reversible behavior towards Cu2+ ions by the accumulation of sodium salt of CH3COO- which can be used in the construction of molecular logic gate where Cu2+ and CH3COO- are considered as inputs and the absorbance at 260 nm as output. Moreover, the molecular docking studies provide useful information about compound 5's interaction with the tyrosinase enzyme (PDB ID- 2Y9X).
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Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry, Panjab University, Chandigarh 160014, India.
| | - Anita Devi
- Department of Chemistry, Panjab University, Chandigarh 160014, India.
| | - Pooja Malik
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Sumesh Khurana
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Jigmat Stanzin
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Devina Sharma
- Department of Chemistry, Panjab University, Chandigarh 160014, India
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8
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Gouda N, Pradhan RN. Pyrene based Schiff base ligand: A highly selective fluorescence chemosensor for the detection of Cu2+ ions. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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9
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Patel DA, Ashok Kumar S, Sahoo SK. Aggregation-induced emission active salicylaldehyde hydrazone with multipurpose sensing applications. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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10
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Umare M, Patel DA, Bhardwaj V, Sk AK, Sahoo SK. Pyridoxal Derived AIEgen for Fluorescence Turn-off Sensing of Cu 2+ and Fe 2+ Ions and Fluorescence Imaging of Latent Fingerprints. J Fluoresc 2023; 33:601-611. [PMID: 36469208 DOI: 10.1007/s10895-022-03109-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
Schiff base 4-((E)-((E)-(2-hydroxybenzylidene)hydrazono)methyl)-5-(hydroxymethyl)-2-methylpyridin-3-ol (HSP) was synthesized by condensing vitamin B6 cofactor pyridoxal with salicylaldehyde hydrazone, and characterized by standard spectroscopic techniques (FT-IR, 1H NMR, 13C NMR, and ESI-MS). The solution of HSP in DMSO/HEPES (10 mM, pH = 7.4) mixed solvents with varying HEPES fractions (fw) from 0 to 95% showed aggregation-induced emission (AIE). The AIE active HSP in 95% HEPES gave intense fluorescent emission at 570 nm was employed for the detection of metal ions. The fluorescence of HSP was quenched upon adding Cu2+ and Fe2+ ions. The association constant (Ka) of the Schiff base HSP with Cu2+ and Fe2+ ions was estimated as 4.08 × 105 M-1 and 1.23 × 105 M-1, respectively by using the online analysis tool BindFit v0.5. The HSP showed the detection limit down to 1.75 µM and 1.89 µM for Cu2+ and Fe2+ ions, respectively. Further, the aggregates of HSP were applied to visualize latent fingerprints (LFPs) over a non-porous glass slide.
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Affiliation(s)
- Mahesh Umare
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat-395007, Gujarat, India
| | - Dhvani A Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat-395007, Gujarat, India
| | - Vinita Bhardwaj
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat-395007, Gujarat, India
| | - Ashok Kumar Sk
- Department of Chemistry, School of Advance Sciences, Vellore Institute of Technology, Vellore-632014, Tamil Nadu, India
| | - Suban K Sahoo
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, Surat-395007, Gujarat, India.
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11
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EEfficient Detection of CN− and Cu2+ Ions by Styryl-BODIPY based Multifunctional Chemosensor in Semi-aqueous Medium. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Ananthan Karthick K, Shankar B, Kubendran Aravind M, Ashokkumar B, Tamilselvi A. Small‐Molecule Fluorescent Probe: Ratiometric and Selective Detection of Sodium Ions for Imaging and Solid‐State Sensing Applications. ChemistrySelect 2022. [DOI: 10.1002/slct.202203235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Kettalu Ananthan Karthick
- PG & Research Department of Chemistry Thiagarajar College Affiliated to Madurai Kamaraj University) Madurai 625 009 India
| | - Bhaskaran Shankar
- Department of Chemistry Thiagarajar College of Engineering Madurai 625 015 India
| | | | | | - Arunachalam Tamilselvi
- PG & Research Department of Chemistry Thiagarajar College Affiliated to Madurai Kamaraj University) Madurai 625 009 India
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Jiang T, Tian LC, Huang C, Zhu BX, Chen DM, Zhu C. A new fluorescent chemosensor based on 2,2’-bipyridyl acylhydrazone Schiff base: Synthesis, sensing properties, and coordination behaviors. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Mayurachayakul P, Chantarasriwong O, Yotapan N, Kamkaew A, Mingvanish W, Srisuwannaket C, Sukwattanasinitt M, Niamnont N. Novel selective "on-off" fluorescence sensor based on julolidine hydrazone-Al 3+ complex for Cu 2+ ion: DFT study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121382. [PMID: 35598577 DOI: 10.1016/j.saa.2022.121382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
A hydrazone (T1) was synthesized by reacting 8-hydroxyjulolidine-9-carboxaldehyde with 2-furoic hydrazide and then modified with Al3+ ion to form a novel hydrazone Al3+ complex (T1-Al3+) in an aqueous solution (8% propylene glycol in 10 mM HEPES pH 5.5). The T1-Al3+ complex was studied as a Cu2+ selective sensor due to its highly efficient capacibility of paramagnetic quenching. The results showed that the T1-Al3+ complexed sensor possesses remarkable sensitivity and selectivity for Cu2+ ion in 8% propylene glycol in 10 mM HEPES pH 5.5 as compared with other tested analytes. Notably, this sensor has a broad linear detection range of 10-110 µM for Cu2+ ion and a detection limit level of 0.62 µM, which is lower than the Cu2+ concentration threshold in drinking water designated by the United States Environmental Protection Agency (EPA). Additionally, it was detectable for the presence of Cu2+ ion in mineral water and tap water samples. The selectivity of T1-Al3+ complexed sensor with Cu2+ ion could be explained by the basis of computation with Gaussian software complied with the basis sets of B3LYP/6-31 G(d,p)/LANL2DZ. Furthermore, only T1 exhibited anticancer efficacy against HeLa and U251 cells with MTT assay.
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Affiliation(s)
- Pipattra Mayurachayakul
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Oraphin Chantarasriwong
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Nattawut Yotapan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science and Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anyanee Kamkaew
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Withawat Mingvanish
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Choladda Srisuwannaket
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Mongkol Sukwattanasinitt
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science and Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nakorn Niamnont
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand.
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15
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Bhardwaj V, Patel DA, Majeed SA, Hameed ASS, Aatif A M, Sk AK, Sahoo SK. Probing biothiols using a red-emitting pyridoxal derivative by adopting copper(II) displacement approach and cell imaging. Chem Biodivers 2022; 19:e202200425. [PMID: 35959557 DOI: 10.1002/cbdv.202200425] [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: 05/03/2022] [Accepted: 08/11/2022] [Indexed: 11/06/2022]
Abstract
An aggregation-induced emission (AIE) active Schiff base L was synthesized by condensing pyridoxal and 2-hydroxy-1-naphthaldehyde with p -phenylenediamine in two simple steps in ethanol. The colorimetric, UV-Vis and fluorescence studies of L revealed that the weak yellow emissive L (λ em =540 nm, λ ex = 450 nm) in pure DMSO turned to a red-emissive L upon increasing the poor solvent fraction (HEPES buffer, 10 mM, pH 7.4) above 50% in DMSO. The DLS and SEM analysis supported the formation of self-aggregates of L that restricted the intramolecular motion and activated the ESIPT. The cations sensing ability of the AIEgen L was explored in HEPES buffer (5% DMSO, 10 mM, pH 7.4), where Cu 2+ selectively quenched the fluorescence at 608 nm due to the chelation-enhanced fluorescence quenching (CHEQ) effect with an estimated sensitivity limit of 0.9 µM. Subsequently, the in situ formed AIEgen L-Cu 2+ complex was applied for the cascade detection of cysteine (Cys), homocysteine (Hcy) and glutathione (GSH). The decomplexation of Cu 2+ from the AIEgen L-Cu 2+ upon addition of Cys, Hcy and GSH restored the quenched fluorescence emission of AIEgen L at 608 nm. With this Cu 2+ displacement approach, the concentration of Cys, Hcy and GSH can be detected down to 2.8 µM, 3.12 µM and 2.0 µM, respectively. The practical utility of AIEgen L and AIEgen L-Cu 2+ was validated by quantifying the selective analytes in various environmental and biological samples, and also applied successfully for the cell imaging applications.
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Affiliation(s)
- Vinita Bhardwaj
- SVNIT Surat: Sardar Vallabhbhai National Institute of Technology, Department of Chemistry, Ichchhanath, Surat, INDIA
| | - Dhvani A Patel
- SVNIT Surat: Sardar Vallabhbhai National Institute of Technology, Department of Chemistry, Ichchhanath, 395007, Surat, INDIA
| | - S Abdul Majeed
- C. Abdul Hakeem college, Department of Zoology and Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, INDIA
| | - A S Sahul Hameed
- C. Abdul Hakeem College, Department of Zoology and Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, INDIA
| | - Mujthaba Aatif A
- VIT University, Department of Chemistry, School of Advance Sciences, Vellore, INDIA
| | - Ashok Kumar Sk
- VIT University, Department of Chemistry, School of Advance Sciences, Vellore, INDIA
| | - Suban K Sahoo
- SV National Institute of Technology, Applied Chemistry, Ichchhanath, 395007, Surat, INDIA
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16
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Qiao YJ, Xu FZ, Chen Y, Wang ZQ, Gong XQ, Wang CY. A sensitive “on-off-on” fluorescent probe for sequential Cu2+/S2− detection in actual water samples and living cells. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Patil MM, Park SJ, Yeom GS, Bendre RS, Kuwar A, Nimse SB. Fluorescence 'turn-on' probe for nanomolar Zn (II) detection in living cells and environmental samples. NEW J CHEM 2022. [DOI: 10.1039/d2nj02012b] [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
Herein, a Schiff base ligand FHE was synthesized by condensing 5-allyl-2-hydroxy-3-methoxybenzaldehyde, a eugenol derivative with a derivative furan-2-carbohydrazide. FHE alone showed low fluorescence signals due to the intramolecular charge transfer...
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