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Sasaki Y, Ohshiro K, Okabe K, Lyu X, Tsuchiya K, Matsumoto A, Takizawa SY, Minami T. Zn(II)-Dipicolylamine-Attached Amphiphilic Polythiophene for Quantitative Pattern Recognition of Oxyanions in Mixtures. Chem Asian J 2023; 18:e202300372. [PMID: 37309739 DOI: 10.1002/asia.202300372] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/14/2023]
Abstract
Herein, we propose a novel amphiphilic polythiophene-based chemosensor functionalized with a Zn(II)-dipicolylamine side chain (1poly ⋅ Zn) for the pattern recognition of oxyanions. Optical changes in amphiphilic 1poly ⋅ Zn can be induced by the formation of a random coil from a backbone-planarized structure upon the addition of target oxyanions, which results in blueshifts in the UV-vis absorption spectra and turn-on-type fluorescence responses. Dynamic behavior in a polythiophene wire and/or among wires could be a driving force for obtaining visible color changes, while the molecular wire effect is dominant in obtaining fluorescence sensor responses. Notably, the magnitude of optical changes in 1poly ⋅ Zn has depended on differences in properties of oxyanions, such as their binding affinity, hydrophilicity, and molecular geometry. Thus, various colorimetric and fluorescence response patterns of 1poly ⋅ Zn to oxyanions were obtained, albeit using a single chemosensor. A constructed information-rich dataset was applied to pattern recognition for the simultaneous group categorization of phosphate and carboxylate groups and the prediction of similar structural oxyanions at a different order of concentrations in their mixture solutions.
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Affiliation(s)
- Yui Sasaki
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
| | - Kohei Ohshiro
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
| | - Kiyosumi Okabe
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
| | - Xiaojun Lyu
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
| | - Kazuhiko Tsuchiya
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
| | - Akira Matsumoto
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
| | - Shin-Ya Takizawa
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, 153-8902, Tokyo, Japan
| | - Tsuyoshi Minami
- Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, 153-8505, Tokyo, Japan
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Das S, Patra L, Pratim Das P, Ghoshal K, Gharami S, Walton JW, Bhattacharyya M, Mondal TK. A new ratiometric switch "two-way" detects hydrazine and hypochlorite via a "dye-release" mechanism with a PBMC bioimaging study. Phys Chem Chem Phys 2022; 24:20941-20952. [PMID: 36053209 DOI: 10.1039/d2cp02482a] [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
A new ratiometric fluorescent probe (E)-2-(benzo[d]thiazol-2-yl)-3-(8-methoxyquinolin-2-yl)acrylonitrile (HQCN) was synthesised by the perfect blending of quinoline and a 2-benzothiazoleacetonitrile unit. In a mixed aqueous solution, HQCN reacts with hydrazine (N2H4) to give a new product 2-(hydrazonomethyl)-8-methoxyquinoline along with the liberation of the 2-benzothiazoleacetonitrile moiety. In contrast, the reaction of hypochlorite ions (OCl-) with the probe gives 8-methoxyquinoline-2-carbaldehyde. In both cases, the chemodosimetric approaches of hydrazine and hypochlorite selectively occur at the olefinic carbon but give two different products with two different outputs, as observed from the fluorescence study exhibiting signals at 455 nm and 500 nm for hydrazine and hypochlorite, respectively. A UV-vis spectroscopy study also depicts a distinct change in the spectrum of HQCN in the presence of hydrazine and hypochlorite. The hydrazinolysis of HQCN exhibits a prominent chromogenic as well as ratiometric fluorescence change with a 165 nm left-shift in the fluorescence spectrum. Similarly, the probe in hand (HQCN) can selectively detect hypochlorite in a ratiometric manner with a shift of 120 nm, as observed from the fluorescence emission spectra. HQCN can detect hydrazine and OCl- as low as 2.25 × 10-8 M and 3.46 × 10-8 M, respectively, as evaluated from the fluorescence experiments again. The excited state behaviour of the probe HQCN and the chemodosimetric products with hydrazine and hypochlorite are studied by the nanosecond time-resolved fluorescence technique. Computational studies (DFT and TDDFT) with the probe and the hydrazine and hypochlorite products were also performed. The observations made in the fluorescence imaging studies with human blood cells manifest that HQCN can be employed to monitor hydrazine and OCl- in human peripheral blood mononuclear cells (PBMCs). It is indeed a rare case that the single probe HQCN is found to be successfully able to detect hydrazine and hypochlorite in PBMCs, with two different outputs.
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Affiliation(s)
- Sangita Das
- Department of Chemistry, Jadavpur University, Kolkata-700032, India. .,Department of Chemistry, Durham University, Durham, DH1 3LE, UK. .,KIST Europe Forschungsgesellschaft mbH, Campus E71, 66123 Saarbrücken, Germany
| | - Lakshman Patra
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Partha Pratim Das
- Center for Novel States of Complex Materials Research, Seoul National University, Seoul 08826, Republic of Korea
| | - Kakali Ghoshal
- Department of Biochemistry, University of Calcutta, Kolkata-700019, India
| | - Saswati Gharami
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - James W Walton
- Department of Chemistry, Durham University, Durham, DH1 3LE, UK.
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Tan Y, Pan S, Zhang S, Fang L, Zhang F, Zhang Y, Jiang L. Crown‐Ether‐based Cryptands with Rarely Strong Affinities for Binding Neutral Organic Molecules. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yanyan Tan
- South China Normal University school of chemistry Higher Education Mega Center of GuangzhouGuangzhou 510631 Guangzhou CHINA
| | - Shaowu Pan
- South China Normal University Chemistry CHINA
| | - Shilong Zhang
- South China Normal University school of chemistry CHINA
| | - Lin Fang
- South China Normal University Chemistry Higher Education Mega CenterGuangzhou 510631 Guangzhou CHINA
| | - Feichun Zhang
- South China Normal University School of Chemistry CHINA
| | - Yuanyuan Zhang
- South China Normal University Guangzhou Higher Education Mega Center Chemistry Department 番禺区大学城中山大学格致园1号楼4单元1102 510006 广州市 CHINA
| | - Lasheng Jiang
- South China Normal University School of Chemistry Guangzhou 510006, P. R. ChinaGuangzhou 510006 Guangzhou CHINA
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Niedbała P, Ceborska M, Mehmet M, Ignacak W, Jurczak J, Dąbrowa K. Anion Recognition by a Pincer-Type Host Constructed from Two Polyamide Macrocyclic Frameworks Jointed by a Photo-Addressable Azobenzene Switch. MATERIALS (BASEL, SWITZERLAND) 2022; 15:692. [PMID: 35057408 PMCID: PMC8777895 DOI: 10.3390/ma15020692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/04/2022] [Accepted: 01/10/2022] [Indexed: 12/10/2022]
Abstract
A sterically crowded light-responsive host 1 was synthetized with a 93% yield by applying a post-functionalization protocol utilizing the double amidation of 4,4'-azodibenzoyl dichloride with a readily available 26-membered macrocyclic amine. X-ray structures of two hydrates of trans-1 demonstrate a very different alignment of the azobenzene linkage, which is involved in T-shape or parallel-displaced π⋯π stacking interactions with the pyridine-2,6-dicarboxamide moieties from the macrocyclic backbone. Despite the rigidity of the macrocyclic framework, which generates a large steric hindrance around the azobenzene chromophore, the host 1 retains the ability to undergo a reversible cis⟷trans isomerization upon irradiation with UVA (368 nm) and blue (410 nm) light. Moreover, thermal cis→trans back-isomerization (ΔG0 = 106.5 kJ∙mol-1, t½ = 141 h) is markedly slowed down as compared to the non-macrocyclic analog. 1H NMR titration experiments in DMSO-d6/0.5% water solution reveal that trans-1 exhibits a strong preference for dihydrogenphosphate (H2PO4-) over other anions (Cl-, MeCO2-, and PhCO2-), whereas the photogenerated metastable cis-1 shows lower affinity for the H2PO4- anion.
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Affiliation(s)
- Patryk Niedbała
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Magdalena Ceborska
- Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland;
| | - Mart Mehmet
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Wiktor Ignacak
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Janusz Jurczak
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Kajetan Dąbrowa
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
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