Fluorescent carbon dots for ratiometric detection of curcumin and ferric ion based on inner filter effect, cell imaging and PVDF membrane fouling research of iron flocculants in wastewater treatment

被引：104

作者：

Yan, Fanyong ^{[1
]}

Zu, Fanlin ^{[1
]}

Xu, Jinxia ^{[1
]}

Zhou, Xuguang ^{[1
]}

Bai, Zhangjun ^{[1
]}

Ma, Cong ^{[1
]}

Luo, Yunmei ^{[2
,3
]}

Chen, Liang ^{[4
]}

机构：

[1] Tianjin Polytech Univ, Coll Environm & Chem Engn, Tianjin Engn Ctr Safety Evaluat Water Qual & Safe, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

[2] Zunyi Med Univ, Key Lab Basic Pharmacol, Minist Educ, Zunyi 563003, Peoples R China

[3] Zunyi Med Univ, Joint Int Res Loboratory Ethnomed, Minist Educ, Zunyi 563003, Peoples R China

[4] Hokkaido Univ, Grad Sch Life Sci, Sapporo, Hokkaido 0010024, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 287卷

基金：

中国国家自然科学基金;

关键词：

Carbon dots; Curcumin; Fe3+; Inner filter effect; H1299 cell imaging; Membrane fouling research; ONE-STEP SYNTHESIS; SENSITIVE DETECTION; QUANTUM DOTS; NANOPARTICLES; MECHANISMS; CYSTEINE; ENERGY; PROBES; SENSOR;

D O I：

10.1016/j.snb.2019.01.144

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The CDs were used as the ratiometric probe for detection of curcumin and Fe3+. The fluorescence of CDs at 420 nm was quenched through inner filter effect (IFE) while the fluorescence of curcumin at 525 nm was enhanced after adding curcumin. The value of ln(I-525/I-420) increased linearly with the curcumin concentration in the range of 5-30 mu M, the limit of detection was 21.79 nM. After adding Fe3+ into the system of CDs-curcumin, curcumin complexed with Fe3+ leading to the quenching of the fluorescence of curcumin at 525 nm, which declined the spectra overlap between curcumin and CDs. The process of IFE was inhibited, the fluorescence of CDs at 420 nm was recovered. The value of ln(I-525/I-420) linearly decreased with the increasing of Fe3+ in the range of 2-14 mu M, the limit of detection is 18.11 nM. The CDs-curcumin system was successfully applied for H1299 cell imaging and has potential applications in the fields of fluorescent labeling and inhibition of tumor cells. The CDs-curcumin system was furtherly used for PVDF membrane fouling research of iron flocculants in wastewater treatment.

引用

页码：231 / 240

页数：10

共 26 条

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