Freestanding Nanosheets from Crosslinked Biphenyl Self-Assembled Monolayers

Freestanding nanosheets (see Figure) with the thickness of a single molecule and lateral dimensions in the micrometer range have been obtained by the release of self‐assembled monolayers from the underlying surface by dissolution of the substrate or by scission of the anchor group–substrate bonds. The self‐assembled monolayers are composed of biphenyl units that are crosslinked by electron irradiation.