| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 |
20권 2호, p.1917 |
| 발표분야 |
재료 |
| 제목 |
OFF-ON chemosensors based on Rhodamine B for Al3+ and Hg2+ with Novel Functionalized Fe3O4/SiO2 nanoparticle |
| 초록 |
From the Rhodamine B, two novel [1 and 2] fluorescent “off-on” chemosensors were designed and synthesized for selectively sensing of cations. A Novel Al3+ specific “off-on” fluorescent chemosensor 1 of pyridine amphiphile Rhodamine B was prepared, based on the equilibrium between the spirolactam and the ring-opened amide. The 1 showed high Al3+-selective absorbance and fluorescence enhancement over commonly coexistent metal ions in CH3CN. And also the coordination mode with 1:1 stoichiometry was proposed between 1 and Al3+. It was also demonstrated that the 1 could be used as an excellent “off-on” fluorescent chemosensor for the measurement of Al3+ in HeLa cells with satisfying results. The chemosensor 2 has been functionalized with Fe3O4@SiO2 core/shell magnetic nanoparticles. The core was composed of superparamagnetic Fe3O4 nanoparticles, while the shell consisted of silica and was functionalized by novel rhodamine derivative. The obtained 2 was confirmed by XPS and TGA. The Rhodamine B functionalized-Fe3O4@SiO2 core/shell magnetic nanoparticles have been removed and selectively sense the Hg2+ cation in CH3CN medium. |
| 저자 |
황지용, 강성민, 손영아
|
| 소속 |
충남대 |
| 키워드 |
Chemosensor; Nanoparticle; Magnetite; rhodamine; Cell image
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
