智能纳米容器对缓蚀剂酸/碱双刺激的响应释放性能  

Controlled Release of Corrosion Inhibitor from Intelligent Nanocontainers Based on Acid and Base Dual-responsive

作　　者：杨年旺 陈涛[1] 傅佳骏[1] 

机构地区：[1]南京理工大学化工学院,南京210094

出　　处：《高等学校化学学报》2014年第5期971-975,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51102135);江苏省自然科学基金(批准号:BK2011711);江苏省研究生创新工程(批准号:CXLX13_196)资助~~

摘　　要：以聚苯乙烯(PS)微球为硬模板,制备中空介孔二氧化硅纳米微球(HMSs),通过在其表面安装双稳态准轮烷分子作为超分子纳米阀门,实现对缓蚀剂分子苯骈三氮唑(BTA)的酸/碱双刺激的响应释放功效.采用透射电子显微镜(TEM)、X射线衍射(XRD)和比表面积分析等手段表征了HMSs的形貌和结构,使用傅里叶红外光谱(FTIR)和热重分析(TGA)验证了HMSs表面功能化过程,利用紫外-可见分光光度计(UV-Vis)实时监测缓蚀剂分子在不同pH值下的释放过程.实验结果表明,合成的HMSs呈单分散,比表面积为1141.16 m2/g.利用超分子自组装技术制得的智能纳米容器实现了在中性条件下'零释放',而在酸性或碱性条件下大量释放的效果.Hollow mesoporous silica nanoparticles （ HMSs ） were prepared using polystyrene microspheres （ PS） as hard templates. The supramolecular nanovalves in the form of bistable pseudorotaxane molecules were installed on the surface of the HMSs and achieved the acidic and basic dual stimuli-responsive release effects of corrosion inhibitor molecules, benzotriazole（ BTA） . The morphology and structure of HMSs were characte-rized by transmission electron microscope （ TEM ） , X-ray diffraction assay （ XRD ） , Brunauer-Emmett-Teller （ BET） and Barrett-Joyner-Halenda（ BJH） analyses. The surface functionalization of HMSs was demonstrated by Fourier transform infrared spectrometer （ FTIR ） and thermogravimetric analysis （ TGA ） . The release per-formances of BTA at different pH values were monitored by UV-Vis spectrophotometer. The results showed that the HMSs were monodispersed nanospheres and the specific surface area was 1141. 16 m2/g. The intelligent nanocontainers constructed by the supramolecular self-assembly technology realized “zero premature release”at neutral condition and remarkable release at acidic or alkaline conditions.

关 键 词：中空介孔二氧化硅微球 纳米阀门 缓蚀剂 酸 碱双刺激响应 

分 类 号：O622[理学—有机化学]