荧光
羟胺
检出限
原位
铜
纳米颗粒
DNA
组合化学
纳米技术
化学
一步到位
材料科学
化学工程
色谱法
有机化学
生物化学
物理
量子力学
工程类
作者
Quanwei Song,Changzhao Chen,Wenhe Yu,Lixia Yang,Kunfeng Zhang,Jinfeng Zheng,Xianyuan Du,Hongkun Chen
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2019-01-01
卷期号:9 (45): 25976-25980
被引量:4
摘要
Herein, we develop a facile method for selective and sensitive detection of hydroxylamine (HA) based on the in situ formation of DNA templated copper nanoparticles (DNA-CuNPs) as fluorescent probes. It is firstly found that HA as a reducing agent can play a key role in the in situ formation of fluorescent DNA-CuNPs. This special optical property of DNA-CuNPs with (λex = 340 nm, λem = 588 nm) with a mega-Stokes shifting (248 nm) makes it applicable for the turn-on detection of HA. In addition, this fluorescent method has several advantages such as being simple, rapid, and environmentally friendly, because it avoids the traditional organic dye molecules and complex procedures. Under optimized conditions, this platform achieves a fluorescent response for HA with a detection limit of 0.022 mM. Especially, successful detection capability in tap waters and ground waters exhibits its potential to be general method.
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