NMR spin-lattice relaxation from molecular defects in nematic polymer liquid crystals
نویسندگان
چکیده
We calculate the contributions Ji Iwo) and J2(2wo) to the NMR relaxation rate Tp~(wo) caused by the motion of proposed molecular defects in polymer liquid crystals. The results are Ji c~ w(/~ and J2 oc wj~/~ for low Lamor frequencies wo. The scaring of the J functions with chain length is also given. It is hoped that NMR may offer a way of deterrn%ing the contribution of molecular defects to dynamical processes in well ordered polymer liquid
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