Hybrid fluorescent nanoparticles from quantum dots coupled to cellulose nanocrystals
详细信息 查看全文
- 作者：Tiffany Abitbol ; Heera S. Marway ; Stephanie A. Kedzior ; Xuan Yang ; Anne Franey…
- 关键词：Cellulose nanocrystals ; Quantum dots ; Fluorescent nanoparticles ; Hybrid nanoparticles
- 刊名：Cellulose
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：24
- 期：3
- 页码：1287-1293
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Bioorganic Chemistry; Physical Chemistry; Organic Chemistry; Polymer Sciences;
- 出版者：Springer Netherlands
- ISSN：1572-882X
- 卷排序：24
文摘
Carboxylated cellulose nanocrystals (CNCs) were decorated with CdSe/ZnS quantum dots (QDs) using a carbodiimide chemistry coupling approach. The one-step covalent modification was supported by nanoscale imaging, which showed QDs clustered on and around the CNCs after coupling. The QD–CNC hybrid nanoparticles remained colloidally stable in aqueous suspension and were fluorescent, exhibiting the broad excitation and narrow emission profile characteristic of the QDs. QD–CNCs in nanocomposite films imparted strong fluorescence within CNC-compatible matrices at relatively low loadings (0.15 nmol QDs/g of dry film), without altering the overall physical properties or self-assembly of the CNCs. The hybrid QD–CNCs may find applications in nanoparticle tracking, bio-imaging, optical/sensing devices, and anti-counterfeit technologies.