abstract |
The present invention relates a chiral compound, comprising a general formula as formula (L): n n nwherein A, B independently are n nX, Y independently are fluorine (F), hydrogen (H) or chlorine (Cl); m represents an integral from 6 to 16; n represents 0 or 1; p represents 1,2,3 or 4; and q represents 1,2,3 or 4. |