Facile formation of stimuli-responsive, fluorescent and magnetic nanoparticles based on cellulose stearoyl ester via nanoprecipitation
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- 作者：Andreas Geissler (1)
Daniel Scheid (1)
Wei Li (1)
Markus Gallei (1)
Kai Zhang (1) - 关键词：Cellulose stearoyl ester ; Nanoparticle ; Stimuli ; responsive ; Magnetic ; Fluorescent
- 刊名：Cellulose
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：21
- 期：6
- 页码：4181-4194
- 全文大小：1,598 KB
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14. Heinze T, Liebert TF, Pfeiffer KS, Hussain MA (2 - 作者单位：Andreas Geissler (1)
Daniel Scheid (1)
Wei Li (1)
Markus Gallei (1)
Kai Zhang (1)
1. Ernst-Berl-Institute for Chemical Engineering and Macromolecular Science, Technische Universit?t Darmstadt, Alarich-Weiss-Str. 8, 64287, Darmstadt, Germany - ISSN：1572-882X
文摘
In comparison to stimuli-responsive, multi-functional nanoparticles (NPs) from synthetic polymers, such NPs based on sustainable, naturally occurring polysaccharides are still scarce. In the present study, stable stimuli-responsive, fluorescent and magnetic NPs were fabricated using cellulose stearoyl esters (CSEs) consisting of cellulose and stearoyl groups. The multifunctional NPs with the average diameters between 80 and 250?nm were obtained after facile nanoprecipitation using CSE solutions containing Fe3O4-NPs. Using the aqueous solution of fluorescent rhodamine B as precipitant, NPs with rhodamine B on NP surface were obtained. Rhodamine B could be released depending on the temperature. In comparison, stearoylaminoethyl rhodamine B can be encapsulated in CSE-NPs, which renders obtained NPs reversible fluorescence in response to UV illumination and heat treatment.