Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G
These structurally isomeric rhodamine 6G-based amino derivatives are designed to detect Sn<sup>2+</sup> ions. The receptors exhibit rapid fluorescent “turn-on” responses towards Sn<sup>2+</sup>. The absorption (530 nm) and fluorescent intensity (551 nm) of the receptors incre...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/10/2/69 |
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| author | Balamurugan Rathinam Vajjiravel Murugesan Bo-Tau Liu |
| author_facet | Balamurugan Rathinam Vajjiravel Murugesan Bo-Tau Liu |
| author_sort | Balamurugan Rathinam |
| collection | DOAJ |
| description | These structurally isomeric rhodamine 6G-based amino derivatives are designed to detect Sn<sup>2+</sup> ions. The receptors exhibit rapid fluorescent “turn-on” responses towards Sn<sup>2+</sup>. The absorption (530 nm) and fluorescent intensity (551 nm) of the receptors increase when increasing the concentration of Sn<sup>2+</sup>. The hydrazine derivative exhibits more rapid sensitivity towards Sn<sup>2+</sup> than the ethylene diamine derivative, indicating that the presence of an alkyl chain in the diamine decreases the sensitivity of the receptors towards Sn<sup>2+</sup>. The presence of carbonyl groups and terminal amino groups strongly influences the sensitivity of the chemosensors toward Sn<sup>2+</sup> by a spirolactam ring-opening mechanism. The receptors exhibit 1:1 complexation with Sn<sup>2+</sup> as evidenced by Job plot, and the corresponding limit of detection was found to be 1.62 × 10<sup>−7</sup> M. The fluorescence images of the receptors and their complexes reveal their potential applications for imaging of Sn<sup>2+</sup> in real/online samples. |
| first_indexed | 2024-03-09T22:19:00Z |
| format | Article |
| id | doaj.art-344f46e281ee43a5a93aff1c964a9529 |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T22:19:00Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-344f46e281ee43a5a93aff1c964a95292023-11-23T19:17:24ZengMDPI AGChemosensors2227-90402022-02-011026910.3390/chemosensors10020069Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6GBalamurugan Rathinam0Vajjiravel Murugesan1Bo-Tau Liu2Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, TaiwanDepartment of Chemistry, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600 048, IndiaDepartment of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, TaiwanThese structurally isomeric rhodamine 6G-based amino derivatives are designed to detect Sn<sup>2+</sup> ions. The receptors exhibit rapid fluorescent “turn-on” responses towards Sn<sup>2+</sup>. The absorption (530 nm) and fluorescent intensity (551 nm) of the receptors increase when increasing the concentration of Sn<sup>2+</sup>. The hydrazine derivative exhibits more rapid sensitivity towards Sn<sup>2+</sup> than the ethylene diamine derivative, indicating that the presence of an alkyl chain in the diamine decreases the sensitivity of the receptors towards Sn<sup>2+</sup>. The presence of carbonyl groups and terminal amino groups strongly influences the sensitivity of the chemosensors toward Sn<sup>2+</sup> by a spirolactam ring-opening mechanism. The receptors exhibit 1:1 complexation with Sn<sup>2+</sup> as evidenced by Job plot, and the corresponding limit of detection was found to be 1.62 × 10<sup>−7</sup> M. The fluorescence images of the receptors and their complexes reveal their potential applications for imaging of Sn<sup>2+</sup> in real/online samples.https://www.mdpi.com/2227-9040/10/2/69fluorescent sensorstannous ionrhodamine 6GOFF–ON fluorescent receptormetal coordination |
| spellingShingle | Balamurugan Rathinam Vajjiravel Murugesan Bo-Tau Liu Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G Chemosensors fluorescent sensor stannous ion rhodamine 6G OFF–ON fluorescent receptor metal coordination |
| title | Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G |
| title_full | Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G |
| title_fullStr | Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G |
| title_full_unstemmed | Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G |
| title_short | Fluorescent “OFF–ON” Sensors for the Detection of Sn<sup>2+</sup> Ions Based on Amine-Functionalized Rhodamine 6G |
| title_sort | fluorescent off on sensors for the detection of sn sup 2 sup ions based on amine functionalized rhodamine 6g |
| topic | fluorescent sensor stannous ion rhodamine 6G OFF–ON fluorescent receptor metal coordination |
| url | https://www.mdpi.com/2227-9040/10/2/69 |
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