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900726

Sigma-Aldrich

石墨烯量子点

blue luminescent, powder

别名:

GQDs

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50 MG
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50 MG
$200.00

About This Item

CAS号:
EC 号:
MDL编号:
UNSPSC代码:
11101522
NACRES:
NA.23

$200.00


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质量水平

描述

topographic height: 1-2.0 nm

表单

powder

颜色

brown

粒径

<5 nm

荧光

λex 350 nm nm, quantum yield ≥10%

SMILES字符串

[C]

InChI

1S/C

InChI key

OKTJSMMVPCPJKN-UHFFFAOYSA-N

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应用

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。这些特点都极大的促进了多种先进的应用:
  • 光学增白剂。
  • 用于安全应用的爆炸物示踪剂
  • 生物成像标记物。
  • 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。
  • 光伏设备。
  • 发光二极管。

储存分类代码

11 - Combustible Solids

WGK

nwg

闪点(°F)

Not applicable

闪点(°C)

Not applicable


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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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
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)

商品

Properties, synthesis & applications of Graphene Quantum Dots explained. GQDs have advantages of nontoxicity, good solubility, stable photoluminescence & better surface grafting.

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。

Graphene nanoribbons (GNRs) are quasi-one-dimensional narrow strips of graphene comprised of sp2-hybridized carbon atoms arranged into hexagonal honeycomb lattice configurations.

Perovskite quantum dots research progresses overcoming challenges, enabling rapid development of light-emitting devices.

Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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