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Báo cáo hóa học: " A combination of hard and soft templating for the fabrication of silica hollow microcoils with nanostructured walls"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: A combination of hard and soft templating for the fabrication of silica hollow microcoils with nanostructured walls | Rodriguez-Abreu et al. Nanoscale Research Letters 2011 6 330 http www.nanoscalereslett.eom content 6 1 330 o Nanoscale Research Letters a SpringerOpen Journal NANO EXPRESS Open Access A combination of hard and soft templating for the fabrication of silica hollow microcoils with nanostructured walls Tirlr ic Dr tHrini io 7-AHroi 1 1 loi IC iIsỉnr x Tỉ2 Qr lTỉnc2 I lii h 2r23 T a Oi 1 01 IrnTỉo3 Arfi ir I linfaH4 Callus Rudriguez Abreu Neus VIldnuvd Cunxitd suldns MdsdkI Ujllldld luyuku Imdc Arturu Lupez Quinteld and Seiji Mutujimd5 Abstract Hulluw silicd micrucuils hdve been prepdred by using functiundlized cdrbun micrucuils ds hdrd templdtes dnd surfdctdnt ur dmphiphilic dye dggregdtes ds suft templdtes. The ubtdined mdteridls hdve been characterized by electrun dnd upticdl micruscupy nitrugen surptiun dnd smdll dngle X-rdy scdttering. The ubtdined hulluw micrucuils resemble the urigindl hdrd templdtes in shdpe dnd size. Mureuver they hdve mesupuruus wdlls pure size 3 nm with sume dumdins where pures dre urdered in d hexdgundl drrdy urigindted frum surfdctdnt micelles. The ubtdined silicd micrucuils dlsu shuw preferentidl ddsurptiun uf cdtiunic fluurescent dyes. A mechdnism fur the furmdtiun uf silicd micrucuils is prupused. Introduction The use of templates or scaffolds is one of the main strategies for the fabrication of advanced materials with new structures at the nano and micro scales that have attracted considerable research effort over the past decades. Templates can be classified as hard and soft . Hard templates are usually solid-state materials with particular structure and morphology whereas soft templates are generally in a fluid-like state. Hard templating is a conceptually straightforward and highly effective method to prepare hollow structures that mimic and or complement the original shape of the templates 1 2 which usually consists of the following steps 1. Preparation of hard templates 2. Functionalization modification of template surface 3. .