Blue luminescent graphene quantum dot conjugated cysteamine functionalized-gold nanoparticles (GQD-AuNPs) for sensing hazardous dye Erythrosine B
Blue luminescent graphene quantum dot conjugated cysteamine functionalized-gold nanoparticles (GQD-AuNPs) for sensing hazardous dye Erythrosine B
复制标题
蓝色发光石墨烯量子点共轭半胱胺功能化金纳米颗粒（GQD-AuNPs）用于危险染料赤藓红B的传感
DOI：
10.1016/j.saa.2019.117960
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发表时间：
2020-03-15
影响因子：
4.4
通讯作者：
Roshanfekr, Hamideh
中科院分区：
文献类型：
--
作者：
Farmani, Maryam Rahmati;Peyman, Hossein;Roshanfekr, Hamideh
赤藓红B（ErB）是一种被批准用于食品、药品和化妆品等领域的染料。本工作旨在分析该染料与合成的石墨烯量子点共轭半胱胺功能化金纳米粒子的相互作用。将柠檬酸热裂解应用于石墨烯量子点的合成。这些材料是零维材料，由于其非凡的物理化学性质而具有相当大的应用前景。为了提高金纳米粒子的应用前景，本文合成了金量子点-金纳米粒子复合物（GQD-AuNPs），并利用FESEM、TEM、EDX和FTIR等技术对其进行了表征。利用荧光技术研究了ErB与合成的缀合物的相互作用，结果表明ErB可以显著地猝灭GQD-AuNPs缀合物的荧光。最后利用这种良好的相互作用构建了ErB传感器，在1.2 nM ~ 50 nM浓度范围内检测ErB，检出限为0.03 nM（S/N = 3），相关系数为99%。(C)2019 Elsevier B. V.版权所有。
Erythrosine B (ErB) is a xanthenes approved dye that widely used in various fields such as foods, drugs and cosmetics. This work intended to analyze the interaction of this dye on synthesized graphene quantum dot conjugated cysteamine functionalized gold nanoparticles. Pyrolysis of citric acid was applied to graphene quantum dots (GQDs) synthesis. These are zero dimensional materials promising considerable applications because of their extraordinary physicochemical properties. In this work, to improve its applications conjugates of GQDs and gold nanoparticles (GQD-AuNPs) are synthesized and characterized with FESEM, TEM, EDX and FTIR techniques. Interaction of ErB with synthesized conjugates was investigated using fluorescence technique and the results demonstrate that ErB can quench fluorescence of GQD-AuNPs conjugates, considerably. At last, we used of this good interaction for construction sensor for detection of ErB in the concentration range of 1.2 nM to 50 nM and the obtained LOD was 0.03 nM (S/N = 3) with correlation coefficient of (99%). (C) 2019 Elsevier B.V. All rights reserved.