On the Drinfeld Twist for Quantum sl(2)
  An isomorphism, up to a twist, between the quasitriangular quantum enveloping algebra U_h(sl(2)) and the (classical) U(sl(2))[[h]]is discussed. The universal twisting element $\cal F$ is given up to the second order in the deformation parameter $h$. 
L. Dabrowski, F. Nesti, and P. Siniscalco