5 nm Ordered Structures Self‐Assembled by C2‐Symmetric Hybrids with Polyhedral Oligomeric Silsesquioxane and Hexa‐peri‐Hexabenzocoronene. Issue 13 (12th June 2019)

• Record Type: Journal Article
• Authors: Zhang, Wei; Pan, Hongbing; Lyu, Xiaolin; Gu, Kehua; Xiao, Anqi; Shen, Zhihao; Fan, Xing‐he
• Is Part Of: Chemphyschem. Volume 20:Issue 13(2019)
• Page Start: 1759
• Page End: 1764
• Publication Date: 2019-06-12
• Subjects: hexa-peri-hexabenzocoronene -- nanopatterning -- polyhedral oligomeric silsesquioxane -- self-assembly -- square columnar phase; Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201900196
• Languages: English
• ISSNs: 1439-4235

Abstract

Abstract: Hybrids consisting of polyhedral oligomeric silsesquioxane (POSS) and hexa‐ peri ‐hexabenzocoronene (HBC) with a dumbbell topology and C2 symmetry were designed and synthesized. They self‐assemble into 5 nm ordered structures. In particular, the increased steric effect with increasing POSS units stabilizes a square columnar phase (Colsqu ) which is important in nanotemplating. These hybrids containing discotic liquid crystal HBC and POSS units have an excellent etching contrast and present an approach to obtain 5 nm nanopatterns. Abstract : Nanotemplates : Dumbbell‐shaped, C2 ‐symmetric hybrids consisting of polyhedral oligomeric silsesquioxane and hexa‐peri‐hexabenzocoronene were designed and synthesized. The 5 nm lamellar structure of p ‐HBC‐2POSS can be transferred from bulk to thin film with a parallel orientation. For p ‐HBC‐4POSS, the increased steric effect is found to stabilize the square columnar phase.