Effect of nature of addends and ionic dopant on magnetic properties of multifunctional star-like hemi-ortho ester derivatives of fullerenol

► Magnetic properties of hemi-ortho esters derivatives of fullerenol are reported. ► Effect of substitution at carbonyl carbon of vinyl esters on magnetic properties is established. ► Effect of TBAH doping on magnetic properties is established. ► Materials have promising magnetic effect at room temperature.