Coordination polymers (CPs) are a unique class of materials that have shown wide variety of notable applications. Such applications are attributed to their highly crystalline nature, well-defined pores and channels, and the presence of functional sites. These features have assisted in developing significant materials for sorption, separation, catalysis as well as sensing and recognition applications. Among diverse CPs, luminescent coordination polymers offer noteworthy applications in sensing, recognition and binding events with analytes and/or substrates. On the other hand, discrete molecular assemblies allow engineering of the confined space which in-turn facilitates a recognition event. In order to introduce selectivity towards a targeted analyte and/or substrate, it is essential to incorporate functional groups capable of offering hydrogen bonds and other weak interactive forces at strategic positions. Keeping these points in perspective, we have designed the next-generation multidentate ligands in such a way where the chelating part coordinates the targeted metal ions whereas the appended part of the ligand creates a secondary coordination sphere based cavity capable of fostering hydrogen bonds and other weak interactive forces. The incorporation of secondary coordination sphere in the resultant coordination polymers and molecular assemblies endow them towards recognition and sensing of assorted analytes and/or substrates.

Coordination polymers and molecular assemblies decorated with hydrogen bonds

255th National Meeting (2018)

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