Hierarchically ordered structures of disk-cube triads containing hexa-peri-hexabenzocoronene and polyhedral oligomeric silsesquioxane

Abstract

Obtaining nanoscale-ordered structures is important for the development of nanotechnology. We designed and synthesized a series of disk-cube triads containing one hexa-peri-hexabenzocoronene (HBC) and two polyhedral oligomeric silsesquioxane (POSS) moieties, HBC-2POSS. The two POSS units were linked via ester or amide bonds. With the amide linkage used, the hydrogen bonding that was introduced affected the balance between the π-π interaction of HBC cores and crystallization interaction of POSS units. Hierarchically ordered structures were obtained from HBC-2POSS triads owing to the synergistic effect of multiple secondary interactions: π-π interaction, hydrogen bonding, and crystallization interaction. As organic-inorganic hybrid materials, these HBC-2POSS triads are promising candidates for templates <10 nm.

Leveraging Macromolecular Isomerism for Phase Complexity in Janus Nanograins

“…74 We inferred that BPOSS would most likely crystallize into a matrix with a flat interface that wraps the core DPOSS cluster in a zigzag fashion. 44,75,76 When the crystal melts at ∼185 °C, only one sharp peak remains in the small-angle region, indicating mesophase formation. This structure is determined to be a Col h showing the characteristic ( 10), (11), and (20) lattice plane with the q/q* of 1, √3, and √4 from the synchrotron SAXS profile (Figure 3I).…”

5 nm Ordered Structures Self‐Assembled by C2‐Symmetric Hybrids with Polyhedral Oligomeric Silsesquioxane and Hexa‐peri‐Hexabenzocoronene.

“…2POSS‐COOH was synthesized according to our previous work . The synthetic route of p ‐HBC‐4POSS was similar to that of p ‐HBC‐2POSS .…”

“…In our previous work, a series of hybrids composed of HBC and POSS have been designed and synthesized. And the effects of the linker between HBC and POSS, the topology of hybrids, and hydrogen‐bonding on self‐assembly have been investigated. However, hybrids based on para‐substituted HBC have not yet been studied mostly owing to complex synthetic procedures.…”

Progress in the self-assembly of organic/inorganic polyhedral oligomeric silsesquioxane (POSS) hybrids

“…[64][65][66][67][68][69][70][71][72][73][74][75][76][77][78] The presence of the POSS NPs within a surfactant or BCP can tune its selfassembly and its thermal and optoelectronic properties. [64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83] The properties of molecular nanoparticles based on gaint molecules depend on the primary structures. There are four types of macromolecular isomers (topo-isomers, sequenceisomers, regioisomers, and stereoisomers).…”