Control of intermolecular porphyrin π–π interactions: low-melting liquid-crystal porphyrins with calamitic mesophases
摘要:
By control of intermolecular pi-pi interactions using 'fly-over' chains, calamitic nematic mesophases are observed in 5,15-disubstituted zinc porphyrins with greatly reduced melting and clearing points.
The design and investigation of porphyrins with liquid crystal properties at room temperature
作者:Christopher J. Wilson、Daniela A. Wilson、Ross W. Boyle、Georg H. Mehl
DOI:10.1039/c2tc00286h
日期:——
The design, synthesis and investigation of a series of porphyrins displaying smectic liquid crystal phase behaviour at room temperature are described. The molecules are constructed in a modular approach, consisting of porphyrin units linked via hydrocarbon and siloxane spacers to calamitic cyanobiphenyl units. The investigation of the phase behaviour, based on optical polarizing microscopy, differential scanning calorimetry and XRD studies, is discussed in detail.
Kinetic Control over Pathway Complexity in Supramolecular Polymerization through Modulating the Energy Landscape by Rational Molecular Design
作者:Soichiro Ogi、Tomoya Fukui、Melinda L. Jue、Masayuki Takeuchi、Kazunori Sugiyasu
DOI:10.1002/anie.201407302
日期:2014.12.22
transformation proceeds through a delicate interplay of these two aggregation pathways. We have succeeded in modulating the energylandscape of the respective aggregates by a rationalmoleculardesign. On the basis of this understanding of the energylandscape, programming of the time evolution was achieved through adjusting the balance between the coupled equilibria.