Synthesis and Characterization of Ferrocene Based Hemicages

Abstract

We present a series of tripodal ligands L1-3, which fold into hemicages C1-3 by using coordination-driven dynamic combinational chemistry. The identities of these hemicages were characterized using H NMR,H-H COSY, DOSY, and ESI-TWIM-MS. Free rotation of the ferrocene structural units in the ligands affords an adaptable directionality, which is essential for the construction of these hemicages. Encapsulation of adamantane by C2 indicates the presence of a well-defined inner cavity as the binding pocket.

Photocatalysis in Water-Soluble Supramolecular Metal Organic Complex

“…Compared to the supramolecular complexes that rely on host–guest or hydrogen bond interaction, the FRET process is easier to perform in MOCs that are based on metal-ligand interaction, because it often needs to occur at very low concentrations of solution. However, the interactions of the former supramolecular complexes can easily disappear in a dilute solution, which makes them difficult to be used in the development of a light collection system [ 154 , 155 , 156 ].…”

Ferrocene: an exotic building block for supramolecular assemblies

“…Due to the unique balance between rigidity and rotational flexibility in Fc, suitably designed 1,n 0 -disubstituted Fc based bi/multidentate ligands (like ferrocenyl pyridines/carboxylates) could coordinate with metal ions of different coordination geometry, providing on-demand directionality required for complexation. 11,12,[54][55][56]64 Furthermore, metallocene-bis crown ethers, when appropriately designed, have demonstrated the capacity to form a stable 1 : 1 complex with K + ions through iondipole interactions, facilitated by the rotational flexibility and the vertical distance of the metallocene moiety. 57 In such cases, 1,n 0 -disubstituted Fc ligands function as hosts, in contrast to their role as guests toward macrocyclic hosts, as discussed earlier.…”

“…A few more fascinating complex cages containing multiple Fc-ligands and metal ions (Fe 2+ /Pd 2+ ) have also been developed recently. 12,64 Fig. 3…”

Electrochemical Recognition of Aromatic Species with Ferrocenylated 1,3,5‐Triazine‐ or 1,3,5‐Triphenylbenzene‐Containing Highly Organized Molecules

“…[20][21][22][23] In the last several years, interesting works dealing with the preparation of Fc containing molecular cages were published. [24][25][26][27][28][29][30][31][32][33][34] From the viewpoint of the construction of these highly organized molecules, Fc offers interesting perspectives related to a dynamic flexibility of the cyclopentadienyl rings (anti or syn rotation phenomenon). Most commonly, organized molecules composed of 1,1'-disubstituted ferrocenes adopting the syn conformation were reported.…”

“…Because of these beneficial features, Fc is commonly employed motif for the construction of the sensor layers dedicated to the recognition of various analytes [20–23] . In the last several years, interesting works dealing with the preparation of Fc containing molecular cages were published [24–34] . From the viewpoint of the construction of these highly organized molecules, Fc offers interesting perspectives related to a dynamic flexibility of the cyclopentadienyl rings ( anti or syn rotation phenomenon).…”