title: Self-assembly of a donor-acceptor nanotube. A strategy to create bicontinuous arrays.
abstract: The self-assembly of bolaamphiphile 1 into nanotubes containing a nanostructured electron donor/acceptor heterojunction is reported. In 10% MeOH/H(2)O, the tetraphenylporphyrin (TPP) and 1,4,5,8-naphthalenetetracarboxylic acid diimide chromophores engage in strong J-type π-π interactions within monolayer rings that further stack into the nanotube assemblies. In 10% MeOH/H(2)O at pH 1 or 11 or in pure MeOH, assembly is driven exclusively by the TPP ring, leading to the formation of nonspecific, unstructured aggregates. Steady-state, time-resolved fluorescence and femtosecond transient absorption spectroscopy revealed a strong dependence of the fluorescence decay and electron-transfer/charge-recombination time constants on the nature of the assemblies. These studies highlight the importance of local nanostructure in determining the photophysical properties of optoelectronic materials.
authors: Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA.
authors: Siyu
authors: S
authors: Tu
authors: Se Hye
authors: SH
authors: Kim
authors: Jojo
authors: J
authors: Joseph
authors: David A
authors: DA
authors: Modarelli
authors: Jon R
authors: JR
authors: Parquette
mesh_terms: D007094:Imides / Q000737:chemistry; D000432:Methanol / Q000737:chemistry; D043942:Nanotubes / Q000737:chemistry*; D009281:Naphthalenes / Q000737:chemistry; D010316:Particle Size; D011166:Porphyrins / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: C429685:1,4,5,8-naphthalenetetracarboxylic diimide; D007094:Imides; D009281:Naphthalenes; D011166:Porphyrins; C409084:tetraphenylporphyrin; D014867:Water; D000432:Methanol