Cellulose nanocrystal supported superparamagnetic nanorods with aminated silica shell: synthesis and properties

Ren, Suxia; Zhang, Xiuqiang; Dong, Lili; Lei, Tingzhou; Teng, Zhaogang; Song, Kunlin; Sun, Xiuxuan; Wu, Qinglin

doi:10.1007/s10853-017-0878-z

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…Moreover, attaching fluorescein to nanoparticles by a spacer linker with 2-10 carbon atoms can effectively control the distance between the fluorescein and nanoparticles, and, therefore, prevent fluorescence quenching [66]. Much research has been performed on amino-silane modification of carbohydrates with or without subsequent FITC-labeling; not only for CNCs ( [38,67,68]), but also for cellulose nanofibers (CNFs) [69], filter paper [70], starch nanocrystals (SNCs) [71], and bacterial nanocellulose (BNC) [72].…”

Section: Overview and Discussion Of Existing Routes For Cellulose Lab...mentioning

confidence: 99%

Fluorescence Labeling of Cellulose Nanocrystals—A Facile and Green Synthesis Route

et al. 2022

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Efficient chemical modification of cellulose nanocrystals (CNCs) by grafting commonly involves aprotic solvents, toxic reactants, harsh reaction conditions, or catalysts, which have negative effects on the particle character, reduced dispersibility and requires further purification, if products are intended for biomedical applications. This work, in contrast, presents a robust, facile, and green synthesis protocol for the grafting of an amino-reactive fluorophore like fluorescein isothiocyanate (FITC) on aqueous CNCs, combining and modifying existent approaches in a two-step procedure. Comparably high grafting yields were achieved, which were confirmed by thermogravimetry, FTIR, and photometry. The dispersive properties were confirmed by DLS, AF4-MALS, and TEM studies. The presented route is highly suitable for the introduction of silane-bound organic groups and offers a versatile platform for further modification routes of cellulose-based substrates.

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Section: Overview and Discussion Of Existing Routes For Cellulose Lab...mentioning

confidence: 99%

Fluorescence Labeling of Cellulose Nanocrystals—A Facile and Green Synthesis Route

et al. 2022

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“…Another technique consists of the synthesis of Fe 3 O 4 -grafted cellulose nanocrystals. The negative charges, introduced in cellulose nanocrystals structure during acid hydrolysis preparation process, generate an electrostatic repulsion among CNC-Fe 3 O 4 particles, hence giving them the ability to effectively disperse in aqueous media [ 100 ].…”

Section: Nanocellulose Hybrids With Magnetic Nanoparticlesmentioning

confidence: 99%

Nanocellulose Hybrids with Metal Oxides Nanoparticles for Biomedical Applications

Oprea

Panaitescu

2020

Molecules

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Cellulose is one of the most affordable, sustainable and renewable resources, and has attracted much attention especially in the form of nanocellulose. Bacterial cellulose, cellulose nanocrystals or nanofibers may serve as a polymer support to enhance the effectiveness of metal nanoparticles. The resultant hybrids are valuable materials for biomedical applications due to the novel optical, electronic, magnetic and antibacterial properties. In the present review, the preparation methods, properties and application of nanocellulose hybrids with different metal oxides nanoparticles such as zinc oxide, titanium dioxide, copper oxide, magnesium oxide or magnetite are thoroughly discussed. Nanocellulose-metal oxides antibacterial formulations are preferred to antibiotics due to the lack of microbial resistance, which is the main cause for the antibiotics failure to cure infections. Metal oxide nanoparticles may be separately synthesized and added to nanocellulose (ex situ processes) or they can be synthesized using nanocellulose as a template (in situ processes). In the latter case, the precursor is trapped inside the nanocellulose network and then reduced to the metal oxide. The influence of the synthesis methods and conditions on the thermal and mechanical properties, along with the bactericidal and cytotoxicity responses of nanocellulose-metal oxides hybrids were mainly analyzed in this review. The current status of research in the field and future perspectives were also signaled.

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“…A MNP-linked CNCs to cell imaging [115] . The strategy used to synthesize CNC@MNP@SiO 2 was similar to the approach used by Tam in 2014 [114] .…”

Section: Conjugation Between Cncs and Nanoparticlesmentioning

confidence: 99%

“…However, to make it easier for researchers to apply CNCs in their research, in this review, we have focused on the surface modification Fig. 12 Strategies for immobilizing MNPs on CNC surface by amidation (A~D) [89] and electrostatic interaction (E~H) [114][115] A F E hydroxyl groups, which can be used in esterification, carbamation, and etherification reactions [10] . Carboxyl groups can also be attached to the CNC surface by Generally, CNCs are used for two main purposes, i.e., as biotemplates or enhancers [5,[21][22]123] .…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Surface Chemical Modification of Cellulose Nanocrystals and Its Application in Biomaterials

Ma,

Zhang,

Huang

2017

Paper and Biomaterials

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Cellulose nanocrystals (CNCs) have been widely applied in biomaterials and show great biocompatibility and mechanical strength. In this review, the chemical reactions applied in CNC surface modification and their application in CNC based biomaterials are introduced. Furthermore, the conjugation of different functional molecules and nanostructures to the surface of CNCs are discussed, with focus on the binding modes, reaction conditions, and reaction mechanisms. With this introduction, we hope to provide a clear view of the strategies for surface modification of CNCs and their application in biomaterials, thus providing an overall picture of promising CNC-based biomaterials and their production.

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Cellulose nanocrystal supported superparamagnetic nanorods with aminated silica shell: synthesis and properties

Cited by 12 publications

References 40 publications

Fluorescence Labeling of Cellulose Nanocrystals—A Facile and Green Synthesis Route

Fluorescence Labeling of Cellulose Nanocrystals—A Facile and Green Synthesis Route

Nanocellulose Hybrids with Metal Oxides Nanoparticles for Biomedical Applications

Surface Chemical Modification of Cellulose Nanocrystals and Its Application in Biomaterials

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