Fig. 1From: Two-dimensional metal-organic frameworks: from synthesis to bioapplicationsCopyright 2017, Wiley–VCH. b Ultrathin metalloporphyrins act as sensor arrays to monitor various phosphates. Reprinted from Ref. [57] with permission of American Chemical Society, Copyright 2018a Graphical representation of the enzyme-mimetic cascade reaction and absorption spectra after Au NPs/Cu-TCPP(Fe) or Au NPs/Cu-TCPP(Co) catalysis. Reprinted with permission from Ref. [56], Back to article page