Ion-based materials derived from positively and negatively charged chloride complexes of π-conjugated molecules.
Oriented salts from planar charged species were prepared by combining positively and negatively charged receptor-anion complexes with similar geometries using dicationic and electronically neutral π-conjugated receptors. Phenylene- or pyrimidine-bridged bis(imidazolium) dicationic anion receptors formed monocationic receptor-Cl(-) complexes that were accompanied by a free Cl(-). This free Cl(-) was subsequently captured by pyrrole-based neutral anion receptors to form negatively charged receptor-Cl(-) complexes. The ion pair of the resulting positively and negatively charged planar receptor-Cl(-) complexes could produce a supramolecular octane gel, adopting a lamellar self-organized structure in its xerogel state. On the other hand, the solid-state ion pairs had hexagonal columnar mesophases, which formed via alternate stacking of the positively and negatively charged planar receptor-Cl(-) complexes. By use of the flash-photolysis time-resolved microwave conductivity technique, the one-dimensional charge-carrier transporting property, with a mobility of 0.05 cm(2) V(-1) s(-1), was determined for the newly prepared solid-state ion pairs.
College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu 525-8577, Japan.
Bin
B
Dong
Tsuneaki
T
Sakurai
Yuya
Y
Bando
Shu
S
Seki
Kazuto
K
Takaishi
Masanobu
M
Uchiyama
Atsuya
A
Muranaka
Hiromitsu
H
Maeda
D002712:Chlorides / Q000737:chemistry*; D005782:Gels / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry; D007477:Ions / Q000737:chemistry*; D008958:Models, Molecular; D011743:Pyrimidines / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry
D002712:Chlorides; D005782:Gels; D007093:Imidazoles; D007477:Ions; D011743:Pyrimidines; D011758:Pyrroles; C029899:imidazole