01341nas a2200157   4500008004100000245012300041210006900164260000800233300001400241490000600255520073900261100002401000700002001024700001701044856012201061       2011                        eng d00aStudies on [3]pseudorotaxane formation from a bis-azacrown derivative as host and imidazolium ion-derivatives as guest0 aStudies on 3pseudorotaxane formation from a bisazacrown derivati  cMAR  a4811-48170 v93 a<p>A new host molecule, having two azacrown derivatives bridged by luminescent naphthalene diimide functionality, is found to form a [3]pseudorotaxane derivative with imidazolim ion-based guest molecules in non-polar solvents through hydrogen-bonded adduct formation. Depending upon the length of the covalent linker that links the imidazolium ion and the luminescent naphthalene fragment in the guests, the [3]pseudorotaxane adducts adopt different conformation or orientation with varying π–π/donor–acceptor interaction. The mechanism for the naphthalene-based luminescence quenching by NDI fragment on adduct formation was found to be a combination of static, as well as dynamic with static quenching as the dominant one.</p>1 aMandal, Amal, Kumar1 aSuresh, Moorthy1 aDas, Amitava  uhttps://library.ncl.res.in/content/studies-3pseudorotaxane-formation-bis-azacrown-derivative-host-and-imidazolium-ion