The focus in many fields of research is the generation of materials with adjustableproperties for specific applications. Among porous materials, metal-organicframeworks (MOFs) have developed over the past 20 years to a material class withenormous potential. Due to the modular design of MOFs from metal cations andorganic linkers, it is possible to tailor the properties of the resulting extendedframeworks by selecting individual components for the needs of specific applications.Careful selection of metal ions and organic molecules with functional groups makes itpossible to adjust and influence the pore system, the type of linkage and the physicaland chemical properties of the framework.In the present work, the main aspect was the preparation of a novel MOF with highadjustability of its properties, based on light-induced postsynthetic reactions on theorganic linker molecules. The framework is composed of Zr4+ ion-based oxo clustersand benzophenone-4,4'-dicarboxylate anions (bzpdc2–) as linker molecules. Thebenzophenone unit is able to react with any molecule that contains C–H bonds afterexcitation with photons, resulting in a covalent bond. This reaction opens thepossibility of changing the properties of the framework post-synthetically. The novelZr-bzpdc MOF is chemically and thermally stable and has a two-dimensional structure,which opens up the possibility of obtaining nanometer-thin layers throughdelamination methods. Further studies have shown that the adaptation of the surfacechemistry by the linkage of molecules has a huge impact on the dispersibility in polarand nonpolar solvents. Furthermore, the direct polymerization of a conductivepolymer, starting from the surface of the MOF, yields electrically conductivecomposite materials. Interestingly, in the course of this study it was found that theunmodified MOF is also electrically conductive. Furthermore, a systematic studyconcerned with the postsynthetic modification of Zr-bzpdc-MOF with alkanes andalcohols of different chain lengths was undertaken. This showed that small hydrophilicmolecules react with all linker molecules throughout the crystal, whereas moleculeswith longer chain lengths and thus more hydrophobic properties only modify thesurface of the MOF crystals.The so far largely unaccessed approach to employ specific photochemicalmodification reactions on the linker molecule the modification of MOFs has beendeveloped here to upgrade the novel Zr-bzpdc-MOF to an unexpectedly versatilecompound which is further augmented by the possibility to obtain nanosheets of thissubstance. Various pathways to adapt this material to specific applications have thusbeen opened up.