A variety of internally N-alkylated N-confused porphyrins were prepared in a stepwise manner through the protection of the reactive peripheral nitrogen atom. NH-Tautomerism in N-confused porphyrins was found to be regulated by N-alkylation, which enabled us to obtain discrete information on two important NH-tautomers of an N-confused porphyrin.
UV light and surface defects accelerate the degradation process of perovskite solar cells (PSCs). In their Communication on page 8673, Mingzhu Li, Yanlin Song, co-workers utilize tautomerism “sunscreen” molecules under illumination to protect PSC from enable molecular defect passivation, achieving high efficiency long-term stability PSCs.
The reaction 2-pyridone (PY) e 2-hydroxypyridine (HP) has been studied as a prototype of tautomerism of heteroaromatic compounds. Geometrical structures and relative energies of the two tautomers as welt as of the transition state (TS) for the intramolecular hydrogen transfer have been obtained using ab initio methods with different basis sets. Correlation energy is introduced through configura...
