2D Nanodot and Nanowires Arrays of Titania and Silica with Tunable Morphologies via Self-Assembled Block Copolymers and Sol-gel Chemistry

Journal of the Korean Chemical Society

Yoon Hee Jang¹  Dong Wook Kim¹  Dong Ha Kim¹  Min-Ah Cha¹ 

关键词: Á¹-°Ö °øÁ¤;    Self-assembly;    Block Copolymer;    Titania;    Silica;    Nanodot;    Nanowire;    Sol-gel Process;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Hybrid thin films composed of poly(styrene-b-ethylene oxide)(PS-b-PEO) and TiO2 (or SiO2) with controlled morphology were fabricated using cooperative sol-gel chemistry and block copolymer(BCP) self-assembly. The inorganic precursors were selectively incorporated into PEO, and the volume fraction of PEO domain is increased with increasing sol-gel precursor/BCP ratio. The generated films exhibit various surface morphologies ranging from 0D nanodot to 1D nanowire arrays. If the composition of hybrid sol-gel/BCP is symmetric, the resulting film has nanowire morphology, whereas nanodot pattern was obtained from asymmetric composition. Given the same sol-gel precursor/BCP ratio, more uniform arrays of inorganic nanodots were induced when BCP template with asymmetric composition was employed.

【 授权许可】

Unknown