University of Duisburg,Germany

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Presentation transcript:

University of Duisburg,Germany Research interest explores Chiral receptors, control axial and planar chirality, molecular shutters or motors…….

Recemization at RT Chiral clamp Conformer stabilized metacyclophane

Preperation of chiral clamp

The construction of a copper-Ion-Controlled chiral Molecular Hinge Control of planar chirality Two flexible wings of hinge can be opened or closed by motion about rotation axis in only one direction

High destabilisation of M conformer is due to strong repulsive interaction between aromatic ring and methyl group of imidazole ring Evidence for chiral transfer Calculated enery diffrence NMR study UV/CD (calculated and experimental)

Blue - trans-2 Red – cis (P) Green- cis (M) Blue-BI Red -AI Calculated using TD-DFT-PBE1PBE/6-31G basis set Experimental

In conclusion……………………….. It is possible to switch the azobenzene unit unidirectionally by irradiation with light using a chiral clamp Evidence for the existence of one of the enantiomer is showed both by theory and experimental method This effect expands the range of application for azobenzene derivatives since possibilities for further substitution at C3,C4 and C5 Thanking You