논문 (학술지)
Synthesis of fluorescent silicon quantum dots for ultra-rapid and selective sensing of Cr(VI) ion and biomonitoring of cancer cells
| 등록번호 | RPMS-2019-0190785009 | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
|---|---|---|---|
| 저자명 (주·공동저자) | Phan Le Minh Tu; Baek Seung Hoon; Nguyen Thang Phan; Park Kyoung Yeol; Ha Siyoung; Rafique Rafia; Kailasa Suresh Kumar; Park Tae Jung | ||
| 논문구분 | 국외전문학술지 | 학술지명 | MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS |
| ISSN | 0928-4931 | 학술지 출판일자 | - |
| 학술지 볼륨번호 | 93 | 논문페이지 | 429 ~ 436 |
| 학술지 임팩트팩터 | 4.164 | 기여율 | 50 % |
| DOI | 10.1016/j.msec.2018.08.024 | ||
| 초록 | Abstract A facile one-step synthetic approach was developed for fabrication of fluorescent silicon quantum dots (Si QDs) and used as a probe for fluorescence detection of hexavalent chromium (Cr (VI)) in environmental water samples. The as-prepared Si QDs exhibit a strong fluorescence emission peak at 520 nm with a quantum yield of 14.2%. The fluorescent Si QDs were rapidly produced by using ascorbic acid as a reductant at 55 °C. The emission peak of Si QDs at 420 nm was effectively quenched upon the addition of Cr(VI). The Si QDs acted as the best fluorescent probe for the detection of Cr(VI) at PBS pH 7.4. The developed probe possessed a good linear correlation (R 2 = 0.992) between Cr(VI) concentration (1.25–40 muM) and the (F 0 -F)/F 0 values with a detection limit of 0.65 muM. Furthermore, the Si QDs served as a bio-probe for fluorescence imaging of A549 lung cancer cells and cell viability results confirmed the good biocompatible nature of Si QDs. The as-fabricated Si QDs show several advantages such as rapidity, selectivity and biocompatibility for sensing of Cr(VI) and imaging of A549 cells, which opens a facile analytical platform for environmental and bioimaging applications. Highlights Facile one-step hydrothermal method for synthesis of fluorescent Si QDs A rapid probe was developed for analysis of Cr(VI) without any sample preparations. The detection limit of Cr(VI) was estimated to be 0.65 muM. The method exhibited good selectivity and sensitivity for assay of Cr(VI). Graphical abstract [DISPLAY OMISSION] | ||
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