900708

Sigma-Aldrich

石墨烯量子点

blue luminescent, 1 mg/mL in H2O

别名:
GQD
CAS号:

质量水平

100

描述

topographic height: 1-2.0 nm

形式

suspension

浓度

1 mg/mL in H2O

颜色

colorless

直径

<5 nm

荧光

λex 350 nm; λem 445 nm, FWHM 65 nm, quantum yield >65%

InChI

1S/C

InChI key

OKTJSMMVPCPJKN-UHFFFAOYSA-N

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一般描述

石墨烯量子点(GQDs)是横向尺寸小于100 nm的少层石墨烯片,具有强大的量子限制和边缘效应。因此,它们具有独特的物理性质,如强光致发光,可通过控制其尺寸、形状、缺陷和功能而针对特定应用进行定制。与经典的QD(如金属或硅量子点)相比,GQD具有生物相容性、光稳定性并且继承了石墨烯出色的热力性质、电性质和机械性能。这些特性极大促进了各种最先进的应用:
  • 荧光增白剂。
  • 安全应用的标志物。
  • 生物成像标记。
  • 荧光聚合物。
  • 抗菌、抗生物污染、消毒系统。
  • 重金属、湿度和压力传感器。
  • 电池。
  • 闪存设备。
  • 光电设备。
  • 发光二极管。

包装

50 mL in glass bottle

storage_class_code

12 - Non Combustible Liquids

WGK Germany

nwg

闪点(F)

Not applicable

闪点(C)

Not applicable

分析证书

原产地证书 (CofO)

Cristina Stefanov et al.
Mikrochimica acta, 187(11), 611-611 (2020-10-17)
A gold nanoparticle/graphene quantum dots (AuNP/GQD) nanozyme-modified screen-printed carbon electrode (SPCE) was developed for fast and ultrasensitive determination of quercetin by square-wave voltammetry. The nanosensing device was inserted in miniaturized equipment. Under the optimal experimental conditions, a good linear relationship between...
An electrochemical avenue to green-luminescent graphene quantum dots as potential electron-acceptors for photovoltaics.
Yan Li et al.
Advanced materials (Deerfield Beach, Fla.), 23(6), 776-780 (2011-02-03)
Jianhua Shen et al.
Chemical communications (Cambridge, England), 48(31), 3686-3699 (2012-03-14)
Similar to the popular older cousins, luminescent carbon dots (C-dots), graphene quantum dots or graphene quantum discs (GQDs) have generated enormous excitement because of their superiority in chemical inertness, biocompatibility and low toxicity. Besides, GQDs, consisting of a single atomic...
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相关内容
阐释了石墨烯量子点的属性、合成及应用。GQD具有无毒性、良好溶解性、稳定的光激发光以及更好的表面接枝属性等优势。
了解更多

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