The present invention relates to an ionic liquid based support of Formula-I: wherein: X+ is a heteroatom containing cationic part; W is a halogen containing polymeric solid support; n is an integer in the range of 2 to 8; Y is a hydrophobic anion; R is selected from CO—Z or Z; Z is selected from the group consisting of —Cl, —Br, —OH, —O-Alkyl and combinations thereof. The present invention also relates to a process for preparation of said ionic liquid based support used for di, oligo or polypeptide manufacture.