Directed assembly of optoelectronically active alkyl-pi-conjugated molecules by adding n-alkanes or pi-conjugated species

作者：Hollamby Martin J^*; Karny Maciej; Bomans Paul H H; Sommerdijk Nico A J M; Saeki Akinori; Seki Shu; Minamikawa Hiroyuki; Grillo Isabelle; Pauw Brian R; Brown Paul; Eastoe Julian; Moehwald Helmuth; Nakanishi Takashi

来源：Nature Chemistry, 2014, 6(8): 690-696.

DOI：10.1038/NCHEM.1977

Supramolecular assembly can yield ordered structures by taking advantage of the cumulative effect of multiple non-covalent interactions between adjacent molecules. The thermodynamic origin of many self-assembled structures in water is the balance between the hydrophilic and hydrophobic segments of the molecule. Here, we show that this approach can be generalized to use solvophobic and solvophilic segments of fully hydrophobic alkylated fullerene molecules. Addition of n-alkanes results in their assembly-due to the antipathy of C-60 towards n-alkanes-into micelles and hexagonally packed gel-fibres containing insulated C-60 nanowires. The addition of pristine C-60 instead directs the assembly into lamellar mesophases by increasing the proportion of pi-conjugated material in the mixture. The assembled structures contain a large fraction of optoelectronically active material and exhibit comparably high photoconductivities. This method is shown to be applicable to several alkyl-pi-conjugated molecules, and can be used to construct organized functional materials with pi-conjugated sections.

• 出版日期2014-8