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Chemin M, Moreau C, Cathala B, et al. Asymmetric modification of cellulose nanocrystals with PAMAM dendrimers for the preparation of pH-responsive hairy surfaces. Carbohydr Polym. 2020;249:116779doi: 10.1016/j.carbpol.2020.116779.
Chemin, M., Moreau, C., Cathala, B., & Villares, A. (2020). Asymmetric modification of cellulose nanocrystals with PAMAM dendrimers for the preparation of pH-responsive hairy surfaces. Carbohydrate polymers, 249116779. https://doi.org/10.1016/j.carbpol.2020.116779
Chemin, Maud, et al. "Asymmetric modification of cellulose nanocrystals with PAMAM dendrimers for the preparation of pH-responsive hairy surfaces." Carbohydrate polymers vol. 249 (2020): 116779. doi: https://doi.org/10.1016/j.carbpol.2020.116779
Chemin M, Moreau C, Cathala B, Villares A. Asymmetric modification of cellulose nanocrystals with PAMAM dendrimers for the preparation of pH-responsive hairy surfaces. Carbohydr Polym. 2020 Dec 01;249:116779. doi: 10.1016/j.carbpol.2020.116779. Epub 2020 Jul 30. PMID: 32933703.
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Carbohydr Polym. 2020 Dec 01;249:116779. doi: 10.1016/j.carbpol.2020.116779. Epub 2020 Jul 30.

Asymmetric modification of cellulose nanocrystals with PAMAM dendrimers for the preparation of pH-responsive hairy surfaces.

Carbohydrate polymers

Maud Chemin, Céline Moreau, Bernard Cathala, Ana Villares

Affiliations

  1. INRAE, UR1268 BIA, F-44316, Nantes, France. Electronic address: [email protected].
  2. INRAE, UR1268 BIA, F-44316, Nantes, France. Electronic address: [email protected].
  3. INRAE, UR1268 BIA, F-44316, Nantes, France. Electronic address: [email protected].
  4. INRAE, UR1268 BIA, F-44316, Nantes, France. Electronic address: [email protected].

PMID: 32933703 DOI: 10.1016/j.carbpol.2020.116779

Abstract

In this work, we present a straightforward method to attach a globular dendrimer at the reducing end of cellulose nanocrystals obtained from tunicates (t-CNC). We investigated the first four generations of poly(amidoamine) dendrimers (PAMAMs G0 to G3) to obtain hybrid t-CNCs. The aggregation behavior of hybrid t-CNCs was studied by dynamic light scattering (DLS) and scanning transmission electron microscopy (STEM); and interactions of these asymmetric nanoparticles with gold surface were elucidated using quartz crystal microbalance with dissipation (QCM-D) and surface plasmon resonance (SPR). Hybrid t-CNCs formed hairy layers onto gold surface combining the properties of rigid rod-like nanocrystals with globular and flexible PAMAM dendrimers. Moreover, the presence of amino groups provided pH-responsive properties to hybrid t-CNCs, and QCM-D results revealed reversible swelling/deswelling behavior. Thereby, we achieved to synthesize tree-shaped functional bio-based materials that adsorbed on gold and formed pH-responsive hairy surfaces.

Copyright © 2020 Elsevier Ltd. All rights reserved.

Keywords: Gold adsorption; PAMAM dendrimers; Quartz crystal microbalance with dissipation (QCM-D); Reducing end functionalization; Surface plasmon resonance (SPR); Tunable swelling; Tunicate cellulose nanocrystals; pH-responsive layer

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