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Schepper J, Orthaber A, Pammer F. Tetrazole-Functionalized Organoboranes Exhibiting Dynamic Intramolecular N→B-Coordination and Cyanide-Selective Anion Binding. Chemistry 2024; 30:e202401466. [PMID: 38708576 DOI: 10.1002/chem.202401466] [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: 04/15/2024] [Revised: 04/25/2024] [Accepted: 04/25/2024] [Indexed: 05/07/2024]
Abstract
Starting from two different cyano-functionalized organoboranes, we demonstrate that 1,3-dipolar [3+2] azide-nitrile cycloaddition can serve to generate libraries of alkyl-tetrazole-functionalized compounds capable of intramolecular N→B-Lewis adduct formation. Due to the relatively low basicity of tetrazoles, structures can be generated that exhibit weak and labile N→B-coordination. The reaction furnishes 1- and 2-alkylated regio-isomers that exhibit different effective Lewis-acidities at the boron centers, and vary in their optical absorption and fluorescence properties. Indeed, we identified derivatives capable of selectively binding cyanide over fluoride, as confirmed by 11B NMR. This finding demonstrates the potentialities of this synthetic strategy to systematically fine-tune the properties of lead structures that are of interest as chemical sensors.
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Affiliation(s)
- Jonas Schepper
- Institute of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Andreas Orthaber
- Department of Chemistry - Ångström laboratories, Uppsala University, BOX 523, 75120, Uppsala, Sweden
| | - Frank Pammer
- Helmholtz Institute Ulm, Karlsruhe Institute for Technology, Helmholtzstrasse 11, 89081, Ulm, Germany
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Wu L, Xu H, Shen M, Li Y, Yang Q, Li Y. An innovative fluorescent probe for the detection of cyanide - enhanced sensitivity by controlling its electrostatic potential and suitable for applications such as cell imaging and food analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123443. [PMID: 37769464 DOI: 10.1016/j.saa.2023.123443] [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: 05/17/2023] [Revised: 09/07/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023]
Abstract
As cyanide is a huge hazard to the environment and human health, the study of the method of detecting low concentrations of cyanide is of great significance. In general, materials with strong positive electrostatic properties can use electrostatic attraction to enrich anions in the water near the materials, then realize rapid detection of low concentration anions by fluorescent probes. In this paper, fluorescent probes PI-S, PI-I and PI-N with cyanide-specific recognition and different charges were synthesized to study the relationship between the charge effect of probes and the sensing sensitivity. Through the zeta potential test and the calculation of the surface electrostatic potential, the positive electricity of PI-S, PI-I and PI-N gradually increased, the ΔG < 0 of the adsorption process gradually decreased, CN- could be aggregated to the vicinity of probes. As a result, the detection limit of the probe was gradually reduced from 1.07 × 10-6 to 5.03 × 10-8 M, the sensitivity was significantly enhanced. Therefore, this is expected to be a new strategy to improve the sensitivity of anion probes by increasing the positive electricity of molecules. In addition, PI-N has good anti-interference ability, short response time and certain application value in cell imaging and identification of endogenous cyanide in food.
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Affiliation(s)
- Liangqiang Wu
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Hai Xu
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Meili Shen
- China-Japan Union Hospital of Jilin University, Changchun 130031, PR China
| | - Yapeng Li
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Qingbiao Yang
- College of Chemistry, Jilin University, Changchun 130021, PR China.
| | - Yaoxian Li
- College of Chemistry, Jilin University, Changchun 130021, PR China
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Wu L, Liu Y, Wu X, Li Y, Du J, Qi S, Yang Q, Xu H, Li Y. A novel Near-Infrared fluorescent probe for Zn 2+ and CN - double detection based on dicyanoisfluorone derivatives with highly sensitive and selective, and its application in Bioimaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120621. [PMID: 34802936 DOI: 10.1016/j.saa.2021.120621] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
We have successfully synthesized NIRF as a near-infrared fluorescence probe for relay recognition of zinc and cyanide ions. The probe possesses well selectivity and anti-interference ability over common ions towards Zn2+ and CN-. The results showed that Zn2+ and the probe formed [NIRF-Zn2+] complex after added Zn2+ into the probe NIRF solution, which emited red fluorescence. The probe can be used for quantitative detection of Zn2+ with a detection limit of 4.61 × 10-8 M. It was determined that the binding stoichiometry between the NIRF and Zn2+ was 1:1 according to the job,s curve. Subsequently, CN- was added to the NIRF-Zn2+ solution, CN- combined with Zn2+ to generate [Zn(CN-)x]1-x due to the stronger binding ability between zinc ion and cyanogen, which lead to the red fluorescence disappeared. The quantitative detection of CN- was realized with a detection limit of 7.9 × 10*7 M. In addition, the probe has excellent specificity and selectivity for Zn2+ and CN-. And the probe can be stable in a wide range of pH. Through biological experiments, we found that it can complete cell imaging in macrophages and imaging of living mice, which has application prospects in Bioimaging. In addition, the probe NIRF has good applicability for Zn2+ and CN- detection in actual samples.
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Affiliation(s)
- Liangqiang Wu
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China
| | - Yan Liu
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China
| | - Xiaodong Wu
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China
| | - Yapeng Li
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China
| | - Jianshi Du
- Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, China-Japan Union Hospital of Jilin University, Changchun 130031, Jilin, China
| | - Shaolong Qi
- Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, China-Japan Union Hospital of Jilin University, Changchun 130031, Jilin, China
| | - Qingbiao Yang
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, China-Japan Union Hospital of Jilin University, Changchun 130031, Jilin, China.
| | - Hai Xu
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China
| | - Yaoxian Li
- College of Chemistry, Jilin University, Changchun 130021, Jilin, China
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Pal A, Karmakar M, Bhatta SR, Thakur A. A detailed insight into anion sensing based on intramolecular charge transfer (ICT) mechanism: A comprehensive review of the years 2016 to 2021. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Liu Y, Wu L, Dai Y, Li Y, Qi S, Du J, Yang Q, Xu H, Li Y. A novel fluorescent probe based on a triphenylamine derivative for the detection of HSO 3- with high sensitivity and selectivity. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3667-3675. [PMID: 34337634 DOI: 10.1039/d1ay00800e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A novel highly active fluorescence chemical sensor (TBQN) for HSO3- was synthesized by the Knoevenagel reaction based on triphenylamine-benzothiazole as a new fluorophore. The probe possessed good selectivity toward HSO3- and anti-interference ability with common ions. The fluorescence and UV-vis spectra of the TBQN probe were significantly changed after the addition of HSO3-. At the same time, the probe solution released obvious green fluorescence. Moreover, the limit of detection for HSO3- was calculated to be 3.19 × 10-8 M. The TBQN probe displayed a rapid response to HSO3- and it took about 3 min to complete the recognition. The detection mechanism is the nucleophilic addition reaction between HSO3- and -C[double bond, length as m-dash]C- in the probe molecule. The π-conjugation and ICT (intramolecular charge transfer) transition in the TBQN molecule were destroyed by this addition, which resulted in the change of the fluorescence before and after the addition of HSO3-. Then, the mechanism was verified by theoretical calculations, 1H NMR measurements and mass spectroscopy. In addition, the probe showed low cytotoxicity and could be used for biological imaging in RAW264.7 cells.
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Affiliation(s)
- Yan Liu
- College of Chemistry, Jilin University, Changchun, 130021, Jilin, China
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Munusamy S, Swaminathan S, Jothi D, Muralidharan VP, Iyer SK. A sensitive and selective BINOL based ratiometric fluorescence sensor for the detection of cyanide ions. RSC Adv 2021; 11:15656-15662. [PMID: 35481207 PMCID: PMC9029250 DOI: 10.1039/d1ra01213d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 04/20/2021] [Indexed: 12/17/2022] Open
Abstract
A highly selective, novel BINOL based sensor BBCN has been developed for the fluorescent ratiometric detection of cyanide ions (CN−). The optical study revealed that BBCN exhibited unique spectral changes only with cyanide ions in the presence of other competing ions. Besides, an apparent fluorescent colour change from green to blue was observed. A clear linear relationship was observed between the fluorescence ratiometric ratio of BBCN and the concentration of CN− with a reasonably low detection limit (LOD) of 189 nM (507 ppb). The optical response was due to the nucleophilic addition of CN− to the dicyanovinyl group of the sensor, which compromises the probe's intramolecular charge transfer. This mechanism was well confirmed by Job's plot, 1H-NMR and ESI-MS studies. BBCN showed immediate spectral response towards (1 second) CN− and detection could be realized in a broad pH window. Furthermore, the practical utility of BBCN was studied by test paper-based analysis and the detection of CN− in various water resources. A highly selective, novel BINOL based sensor BBCN has been developed for the fluorescent ratiometric detection of cyanide ions (CN−).![]()
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Affiliation(s)
- Sathishkumar Munusamy
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | - Sathish Swaminathan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | - Dhanapal Jothi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
| | - Vivek Panyam Muralidharan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore-632014 India
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