کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5180704 | 1380941 | 2014 | 6 صفحه PDF | دانلود رایگان |
- Synthesis of (S)-binaphthalene-based fluorescence polymer sensors.
- The polymers exhibit selective and sensitive fluorescence response toward Fâ.
- The fluorescence response to Fâ could be clearly observed by the naked eyes.
(S)-binaphthalene-based polymer sensors P-1 and P-2 could be synthesized by the polymerization of 5,5â²-((2,5-dibutoxy-1,4-phenylene)bis(ethyne-2,1-diyl))bis-(2-hydroxy-3-(piperidin-1-ylmethyl) benzaldehyde (M-1) with (S)-2,2â²-dimethoxy-(1,1â²-binaphthalene)- 6,6â²-diamine (M-2) and (S)-2,2â²-dimethoxy-(1,1â²-binaphthalene)-3,3â²-diamine (M-3) via nucleophilic addition-elimination reaction. The fluorescence emission of P-1 and P-2 could exhibit gradual enhancement behavior upon the addition of Fâ. Compared with other anions, such as Clâ, Brâ, Iâ, HSO4â, ClO4â, H2PO4â, AcOâ, and NO3â, Fâ could lead to the most remarkable fluorescence enhancement as high as 3.67-fold for P-1 and 12.85-fold for P-2, respectively. More importantly, both two polymer sensors P-1 and P-2 can display a bright yellow fluorescence color change for Fâ under a commercially available UV lamp, which could be clearly observed by the naked eyes for direct visual detection of Fâ.
Journal: Polymer - Volume 55, Issue 22, 23 October 2014, Pages 5689-5694