Process for applying a metal-organic framework-containing corrosion resistant coating to a substrate

A method of protecting a substrate from corrosion comprising applying a protective composition comprising a corrosion inhibitor to a surface of the substrate, wherein the corrosion inhibitor comprises a metal organic framework (MOF),

• wherein the MOF comprises metal ions or metal clusters coordinated to one or more organic ligands to form at least a one-, two- or three dimensional network, and wherein the one or more organic ligands are selected from the group consisting of optionally substituted aryl, heteroaryl or heterocyclic compounds, wherein each of the optionally substituted aryl, heteroaryl or heterocyclic compounds comprise at least one exocyclic sulphur group,
• wherein the one or more organic ligands comprising at least one exocyclic sulphur group are selected from a compound of Formula 1:
• wherein
• A is a 5- or 6-membered aryl, heteroaryl or heterocyclic ring, which is optionally substituted with one or more substituents and optionally fused with one or more aryl or heteroaryl rings, wherein the dotted lines represent an optional double bond;
• and
• wherein X1 is N, X2 is N, and X3 is C—SH.