Solvent Effects on Isomerization in a Ruthenium Sulfoxide Complex
摘要:
We report the structure, electrochemistry, and isomerization kinetics for [Ru(bpy)(biq)(OSO)](PF6), where bpy is 2,2'-bipyridine, biq is 2,2'-biquinoline, and OSO is 2-methylsulfinylbenzoate. UV visible and infrared data are suggestive of intramolecular S -> O and O -> S isomerization of the sulfoxide. Cyclic voltammetry reveals evidence for isomerization triggered by oxidation and reduction. Of particular note is the variation of the S -> O isomerization rate constant in different solvents. The rates were found to be 3.2 (+/- 0.4) s(-1) in propylene carbonate, 0.80 (+/- 0.03) s(-1) in acetonitrile, and 0.26 (+/- 0.01) s(-1) dichloromethane.
Designing photolabile ruthenium polypyridyl crosslinkers for hydrogel formation and multiplexed, visible-light degradation
作者:Teresa L. Rapp、Yanfei Wang、Maegan A. Delessio、Michael R. Gau、Ivan J. Dmochowski
DOI:10.1039/c8ra09764j
日期:——
spatiotemporal control over desirable physical, chemical and biological properties. For advanced applications, there is need for molecular phototriggers that are readily incorporated within larger structures, and spatially-sequentially addressable with different wavelengths of visble light, enabling multiplexing. Here we describe spectrally tunable (λmax = 420-530 nm) ruthenium polypyridyl complexes functionalized