Nine complexes of the type [Ru(N-N)(2)(BPG)]Cl(2) 1-4, [Ru(N-N)(BPG)(2)]Cl(2) 5-8, and [Ru(BPG)(3)]Cl(2) 9 where N-N is 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), dipyrido[3,2-d:2',3'-f]quinoxaline (dpq), dipyrido[3,2-a:2',3'-c]phenazine (dppz), which incorporates bipyridine-glycoluril (BPG-4b,5,7,7a-tetrahydro-4b,7a-epiminomethanoimino-6H-imidazo[4,5-f][1,10]phenanthroline-6,13-dione) as the ancillary ligand, have been synthesized and characterized. These complexes with the
Journal of the American Chemical Society, 128(47), 15038-15039 (2006-11-23)
A cylindrical capsule containing a coiled alkane incorporates spacers. The alkane lengthens and gauche strain is relieved. The spacer can be removed to reset the system to the original state. The system represents a spring-loaded device that operates reversibly in
Advanced materials (Deerfield Beach, Fla.), 23(45), 5404-5408 (2011-10-20)
Electron beam lithography is a powerful technique for the production of nanostructures but pattern quality depends on numerous interacting process variables. Orthogonal gradients of resist composition, baking temperatures, and development time as well as dose variations inside writing fields are
The fragmentation reaction of bis-nor-seco-CB[10] with 3,5-dimethylphenol (3) delivers methylene bridged glycoluril pentamer 5 in 81% yield. The host-guest recognition properties of the previously known tetramer 4 and those of pentamer 5 and hexamer 6 toward cationic guests in water
In a process reminiscent of RNA folding, acyclic glycoluril decamer (+/-)-1 undergoes double helical assembly (red/green strands) in water triggered by the neutralization of regions of high electrostatic surface potential by metal cations (Li(+), Na(+), K(+), Ca(2+)).
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