2. Organic surface functionalization

Various approaches have been developed to form thin (1 μm to 100 nm) or ultra-thin (10 nm to 1 nm) organic films on surfaces. A distinction can be made between so-called physisorption methods, which involve low binding energies between the surface and the organic film (of the order of a few kJ · mol ^–1 ), and chemisorption or rather chemigrification methods, for which the energy values are much more substantial, of the order of a hundred kJ · mol ^–1 . Establishing a strong chemical bond between the surface and the organic layer is necessarily an advantage, as it guarantees greater stability of the interface formed and therefore greater robustness of the layers. The chemigrafting route is therefore the preferred choice for robust surface functionalization. There are two main categories of chemigrafting...