The Research On Modified And Responsiveness Of Biomimetic Nanochannel

There is a one-dimensional nanometer channel structure in organisms whichplays an important role in biological structures and function, one of the mosttypical representative is the ion channels. After deep study and understanding onthe nature of the structure and function of organisms, the scientists try to utilizenanometer technology to research on the bionics about structure and intelligent oforganism, so as to realize the purpose of the imitation of natural and even beyondnature.In this paper, inspired by ion channel of organisms, a bio-inspirednanochannel was constructed by self-assembly. The main work is concentratedon the following aspects:A simple conical nanochannel was designed and prepared on the latent trackPET film by track etching method. The diameter of big nose end is about550nm,with diameter of small nose end of15nm, by SEM characterization andtheoretical calculation. The nanochannel was verified to possess rectificationcharacteristic by volt-ampere characteristics.A bio-inspired nanochannel with dual controlled of UV-light andphotochemical was designed and fabricated with a light alkali molecular ofmountain green （MG-OH-NH₂） modifying by solution chemistry method. Itresearched on rectification characteristic and gating characteristic by thecontrolled of pH values, UV-light and dual controlled of UV-light andphotochemical. It tested the stability and reversibility of dual response singlenanochannel and changes of contact angle with the controlled of UV-light and pH values.A bio-inspired nanochannel of the block copolymer was firstly preparedwith block copolymer (PEO₂₇₂-b-PMA （Chal）₉₇) as raw material by using phaseseparation process. It investigate on different concentrations of Cellulose acetateCA （Cellulose acetate） solution made of film as sacrificial layers and thickness ofthe layer, with the measurements of fluorescence microscope, contact angle andatomicforce microscopy.