experimental nmr study on rhodamine b base

By using the dyes it is now possible to confirm the structure of the complex formed between the hydroxy propyl - cyclodextrin and Rhodamine B base. The Proton NMR studies were carried out with pure dye, rhodamine B base and with 1: 1 inclusion complex of rhodamine B base and hydroxy propyl -cyclodextrein. The charge in chemical shift values confirm the formation of inclusion complex of Rhodamine B base with hydroxy propyl -cyclodextrin.