PHOTOISOMERIZATION STUDIES OF NEW AZO TWEEZER:THE REPORT ON INTERACTION WITH C60

In the present communication, a novel bimacrocyclic tweezer linked through diazobenzenemoiety was synthesized and characterized by ESI MS, IR, 1H and 13C NMR, UV-vis spectroscopy aswell as CHN microanalysis. UV light was irradiated the tweezer to promote the cis-trans isomerization.The molecular structure of the tweezer was calculated by using DFT method. A significant interactionbetween the cis isomer of the tweezer with C60 was also found in terms of the association constantcalculated by 1H NMR spectroscopy. More importantly, these calculations suggested a novelunprecedented interaction between the HOMO’s of diazaobenzene moiety on the tweezer instead of thearomatic groups with C60.

کلیدواژه ها:

azo tweezer ، C60 ، diazobenzene ، cis-trans