Electron localization in nonplanar conjugated macrocycles: Failure of electron buffers to delocalize electrons

Magnesium cofactor produces unpaired electrons confined by triplet nucleotide loops in a full-turn DNA fragment

The B-DNA curvature arising from pairing between nucleotides of the two curved complementary DNA strands affects the oxidation number of magnesium cofactor.

Ring Opening Reactions through C-O Bond Cleavage Uniquely Adding Chemical Functionality to Boron Subphthalocyanine

We are reporting the unexpected reaction between bromo-boron subphthalocyanine (Br-BsubPc) and THF, 1,4-dioxane or γ-butyrolactone that results in the ring opening of the solvent and its addition into the BsubPc moiety. Under heating, the endocyclic C-O bond of the solvent is cleaved and the corresponding bromoalkoxy-BsubPc derivative is obtained. These novel alkoxy-BsubPc derivatives have remaining alkyl-bromides suitable for further functionalization. The alkoxy-BsubPcs maintain the characteristic strongly absorption in visible spectrum and their fluorescence quantum yields.

Synthesis, properties and drug potential of the photosensitive alkyl- and alkylsiloxy-ligated silicon phthalocyanine Pc 227

Photolysis of Pc 227 yields the extensively studied photodynamic therapy drug Pc 4. The photolytic pathway is a homolysis involving a phthalocyanine π radical and low bond dissociation energy.