Straightforward functionalization of breath figures: Simultaneous orthogonal host-guest and pH-responsive interfaces
RODRIGUEZ-HERNANDEZ, Juan
CSIC, Inst Ciencia & Tecnol Polimeros
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
CSIC, Inst Ciencia & Tecnol Polimeros
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Journal of Colloid and Interface Science. 2015, vol. 457, p. 272-280
Elsevier
Résumé en anglais
Herein, we report the design and preparation of multireversible smart porous surfaces combining two different abilities. On the one hand, either neutral or negatively charged surfaces can be formed by formation/disruption ...Lire la suite >
Herein, we report the design and preparation of multireversible smart porous surfaces combining two different abilities. On the one hand, either neutral or negatively charged surfaces can be formed by formation/disruption of host-guest complexes. On the other hand, these surfaces have the capability of alternating negatively and positively charge upon complexation of a polycation. Moreover, these two functionalization steps were demonstrated to be reversible so that the initial surface can be recovered and employed again. For this purpose, first, a copolymer was prepared by polymerization of two different monomers, i.e. styrene (S) and a styrene modified with cyclodextrin (SCD) by click chemistry. Blends of this copolymer and polystyrene were employed to fabricate porous surfaces with controlled pore sizes and chemical distribution by the breath figures technique. More precisely, the cyclodextrin (CD) moieties, specifically located inside the holes of the surface, interact reversibly with adamantane end-terminated poly(acrylic acid) chain (Ada-PAA(85)). The latter served to establish electrostatic interaction with a polycation (poly-L-lysine, PLL), leading to positively charged surface. These interactions, both host-guest and electrostatic, can be inverted obtaining again the original surface, proving the full reversibility of the system.< Réduire
Mots clés en anglais
Honeycomb structured surfaces
Stimuli-responsive surfaces
Orthogonal surface functionalization
Reversible surface functionalization
Breath figures
Origine
Importé de halUnités de recherche