A novel highly sensitive dual-channel chemical sensor for sequential recognition of Cu2+ and CN− in aqueous media and its bioimaging applications in living cells
| العنوان: | A novel highly sensitive dual-channel chemical sensor for sequential recognition of Cu2+ and CN− in aqueous media and its bioimaging applications in living cells |
|---|---|
| المؤلفون: | Qi Lin, You-Ming Zhang, Bingbing Shi, Hong Yao, Zhao-Hui Li, Wen-Juan Qu, Yong-Qiang Xie, Tai-Bao Wei, Xiao-Ni Qi |
| المصدر: | New Journal of Chemistry. 45:18421-18432 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | inorganic chemicals, Detection limit, Chemistry, General Chemistry, Photochemistry, Fluorescence, Catalysis, Chemical sensor, Highly sensitive, Ion, Reagent, Materials Chemistry, Molecule, Selectivity |
| الوصف: | A simple and unique dual-channel chemical probe (DH) was designed and synthesized, which not only realized sequential recognition of Cu2+ and CN− by colorimetric and fluorometric methods, but also realized fluorescence detection of CN−. When different cations (Co2+, Mg2+, Ni2+, Cd2+, Hg2+, Al3+, Ag+, Cu2+, Pb2+, Fe3+, Zn2+ and Ca2+) were added into the solution containing the probe molecule DH, only Cu2+ induced an observable change in the UV-vis and fluorescence spectra, indicating that the probe molecule can be applied for specific recognition of Cu2+. The anti-interference experiment of DH to Cu2+ showed that DH has good selectivity for detecting Cu2+, with a detection limit of 7.05 × 10−7 M. In particular, the fluorescence “ON–OFF–ON” process can be recycled by sequentially adding Cu2+ and EDTA, and the fluorescence intensity remained unchanged after ten times. This observation suggested that DH can achieve reversible highly sensitive response to Cu2+ and EDTA, and can be used as a hypersensitive logic gate for Cu2+ detection. More interestingly, when different anions (CH3COO−, SO32−, H2PO4−, ClO4−, NO3−, HSO4−, I−, Cl−, F−, Br−, N3− and CN−) were added into the solution containing DH and Cu2+, only CN− induced color change of the solution from red to yellowish green, and the fluorescence intensity greatly enhanced, indicating that DH-Cu2+ has a specific response to CN−. The anti-interference experiment showed that DH-Cu2+ has good selectivity for CN−, with a detection limit of 8.11 × 10−6 M. Moreover, the probe molecule DH can detect CN−, with a detection limit of 7.61 × 10−6 M. Experimental and theoretical methods were applied to deeply study the detection mechanism of DH, present great potential in practical application for ion test strips and HeLa cell imaging reagents. |
| تدمد: | 1369-9261 1144-0546 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::f7e3ee5c39253aee5455a762adb4128dTest https://doi.org/10.1039/d1nj03548gTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........f7e3ee5c39253aee5455a762adb4128d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13699261 11440546 |
|---|