379261-43-5

Upstream product

• 2510-22-7 4-pyridylacetylene 
• 210905-79-6 [5,15-bis(4-iodophenyl)-10,20-bis(2,4,6-trimethylphenyl)porphyrinato^(2-)]zinc⁽²⁺⁾ 

Relevant academic research and scientific papers

DABCO as a dynamic hinge between cofacial porphyrin panels and its tumbling inside a supramolecular cavity

The heteroleptic supramolecular double-decker porphyrin 1 was synthesized with DABCO as a guest between two cofacial porphyrin units as characterized by 1H NMR and ESI-MS. While DABCO is not seen to tumble inside the cavity, even at higher temp

Influence of Rotator Design on the Speed of Self-Assembled Four-Component Nanorotors: Coordinative Versus Dispersive Interactions

Four-component nanorotors are prepared by the self-assembly of stator [Cu4(4)]4+with its four copper(I)-loaded phenanthroline stations and various rotators carrying one, two, or three pyridine terminals. The fourth component, 1,4-diazabicyclo[2.2.2]octane, serves as a connecting axle between rotator and stator. Capitalizing on the heteroleptic pyridyl and phenanthroline metal complexes concept, the rotator’s pyridine terminals are connected to the copper(I)-loaded phenanthroline stations (Npy → [Cu(phen)]+) in the STOP state and disconnected in the transition state of rotation. As the barrier of the thermally activated rotation, measured by variable-temperature 1H NMR, is mainly governed by attractive forces between stator stations and rotator terminals, it increases along the series Ea (monopyridine rotator) a (dipyridine rotator) a (tripyridine rotator). However, there are even distinct differences in rate between rotors with equal number of rotator terminals. The change from the 5,10-dipyridyl (cis) to 5,15-dipyridyl (trans) zinc porphyrin rotator enhances the rotational frequency by almost 1000-fold. Density functional theory computational results suggest that not only coordinative Npy → [Cu(phen)]+ interactions but also dispersive attraction influence the barrier of rotation.