Method for preparing layer-layer assembled microcapsule based on host-guest interactions

• Main Author: CHANGYOU,WANG GAO
• Format: Patent
• Language: English
• Published: 17.10.2007
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a method for preparing a layer-layer assembling microcapsule based on interaction of subject and object. The method obtains a microcapsule having multilayer structure, which capsule wall has interaction of subject and object by the steps of: forming a multilayer film on a surface of a colloidal particle in a manner of self-assembling layer upon layer, by the interaction of subject and object of beta-cyclodextrin and dicyclopentadienyl iron in polyallylamine grafting beta--cyclodextrin and polyallylamine grafting dicyclopentadienyl iron, based on the colloidal particle as a template; and removing the colloidal particle. Attractive force of the interaction of subject and object and electrostatic repulsive force of identical electrical charges exist in the capsule wall, so that relative size of the two forces can be controlled by changing chemical environment condition of the microcapsule such as PH value, ionic strength, molecular concentration of free subject and the like, thus controllable variation of the microcapsule size can be easily achieved. The method for preparing the microcapsule of the invention has extremely abroad latent applied cost in nanometer materials, drug releasing, biosensor, etc.