Premium
Fibril Film Formation of Pseudoenantiomeric Oxymethylenehelicene Oligomers at the Liquid–Solid Interface: Structural Changes, Aggregation, and Discontinuous Heterogeneous Nucleation
Author(s) -
Shigeno Masanori,
Sawato Tsukasa,
Yamaguchi Masahiko
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201503224
Subject(s) - pentamer , fibril , nucleation , random hexamer , materials science , chemical engineering , polymer , crystallography , molecule , polymer chemistry , chemistry , organic chemistry , composite material , biochemistry , engineering
Oxymethylenehelicene ( P )‐ and ( M )‐oligomers up to a nonamer were synthesized by a building block method. The oligomers formed dimeric homoaggregates in trifluoromethylbenzene. A mixture of the pseudoenantiomeric ( P )‐pentamer and ( M )‐hexamer formed a heteroaggregate, which self‐assembled into one‐dimensional fibril films at the liquid–solid interface. Discontinuous heterogeneous nucleation occurred, which involved the formation of particles that were 50 nm in diameter and subsequent fibril growth from these particles. The fibril film was formed on the solid surface and the molecules remained dissociated in solution. The fibril film formation was affected by seeding and the solid surface materials.