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Publikováno v:
J Am Chem Soc
We report an air-stable diradical dication of chiral D(2)-symmetric conjoined bis[5]diazahelicene with unprecedented high spin (triplet) ground state, singlet triplet energy gap, ΔE(ST) = 0.3 kcal mol(−1). The diradical dication possesses closed-s
Publikováno v:
Journal of the American Chemical Society. 139:16657-16665
Ribonucleotide reductases (RNR) catalyze the reduction of nucleotides to deoxynucleotides through a mechanism involving an essential cysteine based thiyl radical. In the E. coli class 1a RNR the thiyl radical (C439•) is a transient species generate
Autor:
Matthew O. Ross, Igor D. Petrik, Pierre Moënne-Loccoz, Yelu Shi, Yi Lu, Qianhong Zhu, Ambika Bhagi-Damodaran, Julian Reed, Yong Zhang, Saumen Chakraborty, Evan N. Mirts
Publikováno v:
Journal of the American Chemical Society. 139(35)
The presence of nonheme metal, such as copper and iron, in the heme-copper oxidase (HCO) superfamily is critical to the enzymatic activity of reducing O2 to H2O, but the exact mechanism the nonheme metal ion uses to confer and fine-tune the activity
Publikováno v:
Journal of the American Chemical Society
Journal of the American Chemical Society, American Chemical Society, 2006, 128 (35), pp.11551-11562. ⟨10.1021/ja0631605⟩
Journal of the American Chemical Society, American Chemical Society, 2006, 128 (35), pp.11551-11562. ⟨10.1021/ja0631605⟩
International audience; Poly(ethylene oxide) (PEO) and poly(acrylic acid) (PAA), two polymers known to form pH-sensitive aggregates through noncovalent interactions, were assembled in purposely designed architecture sa dendrimer-like PEO scaffold car