One-step synthesis of patterned polymer brushes by photocatalytic microcontact printing.
نویسندگان
چکیده
A novel method to prepare microstructured polymer brushes using TiO2 nanoparticles and photocatalytic microcontact printing is described. It is shown that ethanol amine can be polymerized to linear polyethyleneimine (PEI) driven by the photocatalytic action of TiO2. Upon UV irradiation during microcontact printing of ethanol amine with a stamp coated with TiO2 nanoparticles, patterned polymer brushes with a length of around 50 nm are obtained.
منابع مشابه
Patterned nitroxide polymer brushes for thin-film cathodes in organic radical batteries.
Nitroxide polymer brushes were covalently patterned on flexible conducting substrates via surface-initiated atom transfer radical polymerization and microcontact printing. As a cathode of organic radical batteries, the nitroxide polymer brushes prevent the nitroxide polymer from dissolving into electrolyte solvents, which improves the cycle-life performance of batteries.
متن کاملPatterned poly(N-isopropylacrylamide) brushes on silica surfaces by microcontact printing followed by surface-initiated polymerization.
Patterned poly(N-isopropylacrylamide) (PNIPAAm) brushes were fabricated on oxidized silicon wafers by surface-initiated atom transfer radical polymerization of N-isopropylacrylamide from a micropatterned initiator. The patterned surface initiator was prepared by microcontact-printing octadecyltrichlorosilane and backfilling with 3-(aminopropyl)triethoxysilane followed by amidization with 2-brom...
متن کاملStructured polymer brushes by AFM lithography.
Structured polymer surfaces have gained increased attention in various research fields during the past few years. By structuring of polymer surfaces, in particular of polymer brushes, functional surfaces with defined properties, for example for the study of cell adhesion and of cell alignment, have been prepared. Moreover, patterning of polymer brushes allows the alteration and control of their...
متن کاملDynamic microcontact printing for patterning polymer-brush microstructures.
In this fi eld, patterning of polymer brushes is a rapidly developing direction [ 6–8 ] because the resulting polymer microstructures are potentially useful for surface-based technologies and for the study of stimuli-responsive phenomena. [ 9 ] While early examples of fabricating patterned polymer brushes using μ CP involved printing an octadecyltrichlorosilane (OTS) pattern to direct the backf...
متن کاملSurface and Site-Specific Ring-Opening Metathesis Polymerization Initiated by Dip-Pen NanolithographyWe acknowledge the AFOSR, DARPA through ARO (no. DAAD19-03-1-0065), and NSF for support of this research. We thank P. A. Bertin and J. M. Gibbs for providing the norbornenyl monomers.
Patterned polymeric structures have attracted significant interest for possible applications in the development of sensors, catalysis, and optical devices. Thus far, several strategies, based upon photolithography, electron beam lithography, and microcontact printing have been developed for generating polymer arrays. While useful for many applications, these methods do not allow one to control ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 51 6 شماره
صفحات -
تاریخ انتشار 2015