Well-studied Cu–BTC still serves surprises: evidence for facile Cu2+/Cu+ interchange
Abstract
Cu–BTC (also known as HKUST-1) is a well-characterized metal–organic framework material produced in an industrial scale and widely studied for a number of potential applications by the scientific community. The co-existence of Cu+ and Cu2+ entities has already been observed in this material, but the presence of Cu+ ions was attributed to