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Yuan PL, Tong L, Li XX, Dong WK, Zhang Y. A benzimidazole-appended double-armed salamo type fluorescence and colorimetric bifunctional sensor for identification of MnO 4- and its applications in actual water samples. Spectrochim Acta A Mol Biomol Spectrosc 2024; 315:124252. [PMID: 38593541 DOI: 10.1016/j.saa.2024.124252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 04/01/2024] [Accepted: 04/03/2024] [Indexed: 04/11/2024]
Abstract
The symmetrically double-armed salamo type fluorescent sensor BMS, incorporating benzimidazole units, was designed and synthesized. Showcasing remarkable specificity and responsiveness to MnO4- within a DMSO:H2O (V/V = 9:1, pH = 7.2) Tris-HCl buffer medium, it enabled dual-channel detection of MnO4- through fluorescent and colorimetric changes. Critical experimental parameters, including detection and quantification thresholds (LOD and LOQ) along with binding affinity constants (Ka), were calculated using the Origin software. A rational interaction mechanism between BMS and MnO4- was deduced, based on fluorescence titration, Electrospray Ionization Mass Spectrometry (ESI-MS), Ultraviolet-Visible Spectroscopy (UV-Vis), Infrared Spectroscopy (IR), Stern-Volmer plots, and Density Functional Theory (DFT) computations. Additionally, the sensor BMS was applied to monitor MnO4- in real water samples. Advancing its practical utility, BMS was fabricated into test strips for the selective detecting of MnO4-.
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Affiliation(s)
- Pei-Lin Yuan
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China; Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Gansu Provincial Biomass Function Composites Engineering Research Center, Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu Province, Gansu Province Research Center for Basic Sciences of Surface and Interface Chemistry, College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730124, PR China
| | - Li Tong
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Xiao-Xia Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Wen-Kui Dong
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China.
| | - Yang Zhang
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China.
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Zhou X, Qi Y, Tang Y, Gao H, Lv L, Lei X, Hu L, Yan Z. Peroxidase-like activity of bimetal Cu-Zn oxide mesoporous nanospheres for the determination of o-aminophenol. Mikrochim Acta 2022; 189:314. [PMID: 35925496 DOI: 10.1007/s00604-022-05421-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/14/2022] [Indexed: 10/16/2022]
Abstract
To enhance the peroxidase-like performance and its application in detection of toxic o-aminophenol (o-AP), a kind of bimetal Cu-Zn oxide-based mesoporous nanosphere (Cu2/3Zn1/3O PNPs) was constructed under microwave-radiation conditions. Its mesoporous microstructure and peroxidase-like catalytic activity were investigated in detail. The results showed that Cu2/3Zn1/3O PNPs possessed a high specific surface area of 34.89 m2g-1 and a well-distributed mesoporous size of approximate 6.07 nm, which endowed the superior peroxidase-like performance. The material catalyzes the oxidization of 3,3',5,5'-tetramethylbenzidine (TMB) with Km/Vmax of 0.104 mM/3.79 × 10-8 M·s-1 in the presence of H2O2. Especially o-AP could exclusively deteriorate the characteristic UV-Vis absorbance intensity at 653 nm (A653) of the Cu2/3Zn1/3O PNPs-TMB-H2O2 system with obvious color change from blue to colorless. Under the optimal conditions, the effect of some interfering substances was low and the limit of detection (LOD) for o-AP was 1.65 × 10-8 mol/L (S/N = 3). When applied to the colorimetric detection of o-AP in practice, the recovery was between 96.1 and 107.2% with R.S.D. less than 2.04%. The mechanism of synergic-enhancement peroxidase-mimic activity of Cu2/3Zn1/3O PNPs and its exclusive colorimetric response to o-AP were proposed as well.
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Affiliation(s)
- Xuemei Zhou
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China
| | - Yuji Qi
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China
| | - Yulian Tang
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China
| | - Hui Gao
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China
| | - Li Lv
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China
| | - Xingyu Lei
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China
| | - Lei Hu
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China.
| | - Zhengquan Yan
- School of Chemistry and Chemical Engineering &, Shandong Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, China.
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Zhang X, Wang Z, Liu Z, Liu B, Wu R, Chen Z, Zuo X. New application of a traditional method: colorimetric sensor array for reducing sugars based on the in-situ formation of core-shell gold nanorod-coated silver nanoparticles by the traditional Tollens reaction. Mikrochim Acta 2021; 188:142. [PMID: 33774720 DOI: 10.1007/s00604-021-04796-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 03/18/2021] [Indexed: 10/21/2022]
Abstract
An effective and robust colorimetric sensor array for simultaneous detection and discrimination of five reducing sugars (i.e., glyceraldehyde (Gly), fructose (Fru), glucose (Glu), maltose (Mal), and ribose (Rib)) has been proposed. In the sensor array, two negatively charged polydielectrics (sodium polystyrenesulfonate (NaPSS) and sodium polymethacrylate (NaPMAA)), which served as the sensing elements, were individually absorbed on the surface of the cetyltrimethylammonium bromide (CTAB)-coated gold nanorods (AuNR) with positive charges through electrostatic action, forming the designed sensor units (NaPSS-AuNR and NaPMAA-AuNR). In the presence of Tollens reagent (Ag(NH3)2OH), Ag+ was absorbed on the surface of negatively charged NaPSS-AuNR and NaPMAA-AuNRs. When confronted with differential reducing sugars, different reducing sugars exhibited differential levels of deoxidizing abilities toward Ag+, thus Ag+ was reduced to diverse amounts of silver nanoparticles (AgNPs) in situ to form core-shell AuNR@AgNP by the traditional Tollens reaction method, leading to distinct colorimetric response patterns (value of AS/AL (the ratio of absorbance at 360 nm to that at 760 nm in Ag+-NaPMAA-AuNR, and the ratio of absorbance at 360 nm to that at 740 nm in Ag+-NaPSS-AuNR)). These response patterns are characteristic for each reducing sugar, and can be quantitatively distinguished by linear discriminant analysis (LDA) at concentrations as low as 10 nM with relative standard deviation (RSD) of 4.11% (n = 3). The practicability of this sensor array has been validated by recognition of reducing sugars in serum and urine samples. A colorimetric sensor array for reducing sugar discrimination based on the reduction of Ag+ and in situ formation of AuNR@AgNP.
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Shellaiah M, Thirumalaivasan N, Aazaad B, Awasthi K, Sun KW, Wu SP, Lin MC, Ohta N. Novel rhodamine probe for colorimetric and fluorescent detection of Fe 3+ ions in aqueous media with cellular imaging. Spectrochim Acta A Mol Biomol Spectrosc 2020; 242:118757. [PMID: 32791389 DOI: 10.1016/j.saa.2020.118757] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 07/21/2020] [Accepted: 07/26/2020] [Indexed: 05/20/2023]
Abstract
A novel rhodamine-pyridine conjugated spectroscopic probe RhP was synthesized and its X-ray single crystalline properties were revealed with tabulation. The RhP displayed a distinct pale-pink colorimetric and "turn-on" fluorescent response to Fe3+ in aqueous media [H2O:DMSO (95:5, v/v)] than that of other interfering ions. During the Fe3+ recognition, the absorption (UV-Vis) and photoluminescence (PL) spectral studies revealed new peaks at 561 and 592 nm, respectively. The 1:1 stoichiometry and binding sites were verified by Job's plot, ESI-mass, and 1H NMR titrations. Subsequently, LOD and binding constant for RhP + Fe3+ complex were estimated as 102.3 nM and 6.265 × 104 M-1 from linear fitting and Benesi-Hildebrand plots, correspondingly. Sensor reversibility of RhP + Fe3+ by EDTA was demonstrated by UV/PL and TRPL investigations. Moreover, the photoinduced energy transfer mechanism and band gap changes were established from the DFT interrogations. Lastly, cellular imaging studies were carried out to authenticate the real applicability of RhP in Fe3+ detection.
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Affiliation(s)
- Muthaiah Shellaiah
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan
| | | | - Basheer Aazaad
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Kamlesh Awasthi
- Center for Interdisciplinary Molecular Science, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan; Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Kien Wen Sun
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan.
| | - Shu-Pao Wu
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Ming-Chang Lin
- Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Nobuhiro Ohta
- Center for Interdisciplinary Molecular Science, Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan; Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 300, Taiwan
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Ren W, Cabush A, Irudayaraj J. Checkpoint enrichment for sensitive detection of target bacteria from large volume of food matrices. Anal Chim Acta 2020; 1127:114-121. [PMID: 32800114 DOI: 10.1016/j.aca.2020.06.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 01/18/2023]
Abstract
A gap in biosensor development is the ability to enrich and detect targets in large sample volumes in a complex matrix. To bridge this gap, our goal in this work is to propose a practical strategy, termed as checkpoint-style enrichment, for rapid enrichment of the target bacteria from large volume of food samples with particulates and evaluate its enrichment and improvement in detection. The checkpoint-style enrichment was conducted with antibody modified polyethylene terephthalate (PET) pads as capture substrates. In our approach, blended lettuce sample cocktail was circulated through antibody modified PET pads such as a checkpoint in the sample solution pathway, where target pathogens were selectively captured with immobilized antibodies. The obtained PET pads with the captured target pathogens were then used for enhanced detection by colorimetry. To render the checkpoint-style enrichment approach practical and applicable for on-site rapid screening tests, only a simple syringe-based setup with antibody modified PET pad was required. The developed method could process up to 50 ml of lettuce cocktail blended from 5g samples and purposefully inoculated with E. coli O157:H7. Overall, the enrichment method developed required only 40 min of sample processing time. After enrichment, as low as 100 CFU/ml of E. coli O157:H7 could be detected by a simple colorimetric procedure due to the enhancement from the proposed checkpoint-style enrichment in the presence of ∼3000 CFU/ml of non-target bacteria. A linear response was obtained from blank to 100000 CFU/ml of E. coli O157:H7 in blended lettuce samples. The conceptualized approach demonstrates a promising means to improve the detection of target bacteria with a high degree of sensitivity and specificity and could be used in low resourse settings.
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Affiliation(s)
- Wen Ren
- Department of Bioengineering. University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Biomedical Research Center in Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, USA
| | - Abigail Cabush
- Department of Bioengineering. University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Joseph Irudayaraj
- Department of Bioengineering. University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Biomedical Research Center in Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, USA; Micro and Nanotechnology Laboratory. University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Cancer Center at Illinois (CCIL), University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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Lohar S, Sinha S, Ghosh S, Das D. Tri-color emission and colorimetric recognition of acetate using semicarbazide and thio-semicarbazide derivatives: Experimental and computational studies. Spectrochim Acta A Mol Biomol Spectrosc 2016; 155:75-80. [PMID: 26583521 DOI: 10.1016/j.saa.2015.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 09/19/2015] [Accepted: 10/22/2015] [Indexed: 06/05/2023]
Abstract
Two new fluorescence probes having semicarbazide (DSC) and thio-semicarbazide (DTSC) units have been derived upon reaction with 2-hydroxy-5-methylbenzene-1,3-dialdehyde. Both the probes show excellent selectivity for acetate ion in DMSO medium whereby DTSC generates tricolor emission. The association constants of DSC and DTSC for acetate are 6.6×10(4)M(-1) and 2×10(3)M(-1) respectively with corresponding detection limits, 1.06×10(-7)M and 2.5×10(-6)M. Density functional theoretical (DFT) studies nicely demonstrate the interaction between the DTSC and acetate ion.
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Affiliation(s)
- Sisir Lohar
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal, India
| | - Sougata Sinha
- Department of Chemistry, Indian Institute Technology, Mandi, Himachal Pradesh, India
| | - Subrata Ghosh
- Department of Chemistry, Indian Institute Technology, Mandi, Himachal Pradesh, India
| | - Debasis Das
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal, India.
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