New Designs for Organic Molecules and Materials with Novel Magnetic Properties

Intramolecular magnetic coupling between two nitrene or two nitroxide units through 1,1-diphenylethylene chromophores. Isomeric dinitrenes and dinitroxides related in connectivity to trimethylenemethane, tetramethyleneethane, and pentamethylenepropane

“…of ~90 mV suggests that the immobilized electroactive centers do not interact.93 The decrease in charging current at the foot of the wave (compare with Figure 9) on addition of n-C5HnSH suggests a more tightly packed film and less anion penetration in the presence of the alkane thiol. The peak current varied linearly with scan rate up to ~2.0 V s'1, (Figure 13 insert) and then deviated from linearity at faster scan rates (Figure 13); compare to films of neat [2] 6, where linearity was found up to 50 V s'1. Similar results were obtained for mixed films of [2]6 and n-CioHjiSH.…”

“…The peak current varied linearly with scan rate up to ~2.0 V s'1, (Figure 13 insert) and then deviated from linearity at faster scan rates (Figure 13); compare to films of neat [2] 6, where linearity was found up to 50 V s'1. Similar results were obtained for mixed films of [2]6 and n-CioHjiSH. These results can be understood in terms of heterogeneous electron transfer rate limitations between the electrode and Ru-group becoming important at high scan rates in the mixed films.…”

Triplet Ground State of 2,5-Dimethylene Five-Member Heterocycles

“…The search for high-spin organic molecules as components of organic ferromagnets continues to drive the development of new molecular architectures. Dougherty presented the structure of a typical covalent organic high-spin molecule as a set of radical sites and ferromagnetic coupling units (FC) . An FC is a structural unit that links two or more paramagnetic centers and enforces a high-spin coupling between (among) them.…”