TECHNOLOGY FOCUS - METALLURGY - Preferred Components: The substrate comprises a ceramic, a crystal, a silicon, a metal oxide, a metal alloy, gold, quartz, indium tin oxide, antimony tin oxide, a semiconductor, and/or a semiconductor alloy (preferably SiO2).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: In the composition (c2), the macromolecule layers are linked to each other by a triazole. The composition (c2) further comprises branches between macromolecular layers, where the branches are bound to the macromolecules by a triazole. Preferred Components: The first click moieties are alkyne groups or azide groups. The substrate comprises glass. The primer surface group comprises an amino group. The photocleavable functionality comprises a nitro-benzyloxycarbonyl group, or a nitro-benzyloxycarbamate group.    TECHNOLOGY FOCUS - POLYMERS - Preferred Method: The method further involves repeating the steps (c1) to (e1) until a multilayer polymacromer composition comprising (i) a primer surface layer comprising a linker, where the linker comprises a photocleavable functionality, (ii) a monomolecular layer comprising a heterobifunctional macromolecule, and (iii) a desired number of monomolecular layers between the linker and a surface monomolecular layer is obtained. The method further involves removal of the multilayer polymacromer composition from the substrate by irradiation of the photocleavable functionality. The method involves removal of the multilayer polymacromer composition (greater than 50, preferably greater than 90, and especially greater than 95%). The efficiency of monomolecular layer formation is greater than 50 (preferably greater than 90, especially greater than 95)%. Alternatively the method involves: (a3) functionalizing a substrate with a primer surface group, where the primer comprises a silicon and an amine group, to form a functionalized substrate layer; (b3) covalently linking a linker to the primer surface group, where the linker comprises a nitrobenzyloxy carbonyl functionality and a click moiety terminus; (c3) forming a monomolecular layer by contacting the click moiety terminus of the linker with a first heterobifunctional macromolecule comprising alpha -trimethylsilyl alkynyl- omega -azido-poly(tert-butyl acrylate); (d3) deprotecting the alpha -trimethylsilyl alkynyl terminus to form a functionalized monomolecular layer; and (e3) forming a second monomolecular layer by contacting the alkyne terminus of the first monomolecular layer with a second heterobifunctional macromolecule comprising alpha -trimethylsilyl alkynyl- omega -azido-poly(tert-butyl acrylate). The method further involves repeating the steps (c3) to (e3) until a multilayer polymacromer composition comprising a desired number of monomolecular layers between the linker and a surface monomolecular layer is obtained. The polymacromer is not destroyed. Preferred Components: The heterobifunctional macromolecule is comprised of a polymer, a blend of polymers, a polymer precursor, a thermoplastic polymer, or a thermosetting polymer (preferably alpha -silyl alkyne-poly(styrene)-N3, alpha -silyl alkyne-poly(tert-butyl acrylate)-N3, or alpha -silyl alkyne-poly(methyl methacrylate)-N3; and especially alpha -trimethylsilyl alkynyl- omega -azido-poly(styrene), alpha -trimethylsilyl alkynyl- omega -azido-poly(tert-butyl acrylate), alpha -trimethylsilyl alkynyl- omega -azido-poly(methyl methacrylate). The heterobifunctional macromolecule is comprised of polymer unit of 10 to 2000000 Daltons. EXAMPLE - No suitable example given.