高等学校化学学报2026，Vol.47Issue(2)：69-75,7.DOI:10.7503/cjcu20250336
纺锤形二氧化硅胶体粒子的制备及组装
Synthesis and Assembly of Spindle-shaped Silica Colloidal Particles
摘要
Abstract
Anisotropic spindle-shaped silica colloidal particles(SSCPs)with tunable geometrical parameters and sizes were synthesized via a segmented,temperature-controlled microemulsion method.Scanning electron microscopy(SEM)characterization results showed that the SSCPs possess a uniform spindle-like morphology with a thicker middle segment and two thinner ends.Using these SSCPs as building blocks,colloidal liquid crystals were assembled driven by shape entropy via gravity sedimentation in a capillary.The resulting structures included smectic,nematic,and isotropic phases.A phase diagram was constructed with the total length(L)of SSCPs as the horizontal axis and the end-to-center diameter ratio(De/Dc)as the vertical axis.When L>1.31 μm and De/Dc<0.72,the formation of the smectic phase was effectively suppressed,and the nematic phase was preferentially induced.关键词
胶体液晶/组装/二氧化硅胶体粒子/向列相/纺锤形Key words
Colloidal liquid crystal/Assembly/Silica colloidal particles/Nematic phase/Spindle-shape分类
化学化工引用本文复制引用
陈广东,暴崧旭,聂志鸿,刘堃,杨扬..纺锤形二氧化硅胶体粒子的制备及组装[J].高等学校化学学报,2026,47(2):69-75,7.基金项目
国家自然科学基金(批准号:22472065,22122203,52073114)和吉林省教育厅科学技术研究项目(批准号:JJKH20250976KJ)资助. Supported by the National Natural Science Foundation of China(Nos.22472065,22122203,52073114)and the Science and Technology Research Project of the Education Department of Jilin Province,China(No.JJKH20250976KJ). （批准号:22472065,22122203,52073114）
