A poly(organophosphazene) represented by the following Chemical Formula 1: wherein, p is an integer between 7 and 50; R 1 is selected from the group consisting of H, HCH 2, CH 3, CH 2 SH, CH(CH 3) 2, CH 2 CH(CH 3) 2, CH(CH 3)C 2 H 5, CH 2 CH 2 SCH 3, CH 2 C 6 H 5, CH 2 C 6 H 4 OH, CH 2 C 2 NH 2 C 6 H 4, OCOC 4 N + H 9, CO 2 C 2 H 5, CH 2 CO 2 C 2 H 5, (CH 2) 2 CO 2 C 2 H 5, and HCONHCH(CH 2 C 6 H 5), and R 2 is selected from the group consisting of CH 3, C 3 H 7, C 4 H 9, C 2 H 5, CH 2 C 6 H 5, and CH 2 CHCH 2; R 3 is CH, R 4 is selected from the group consisting of CO 2, CO 2 CH 2 CO 2, CO 2 CH(CH 3)CO 2, and CONHCH CO 2, R 5 is selected from the group consisting of H, CH 3, and C 2 H 5, and W and X are independently selected from the group consisting of H, HCH 2, CH 3, CH(CH 3) 2, CH 2 CH(CH 3) 2, CH(CH 3)C 2 H 5, CH 2 CH 2 SCH 3, CH 2 C 6 H 5, CH 2 C 2 NH 2 C 6 H 4, OCOC 4 N + H 9, CO 2 C 2 H 5, (CH 2) 2 CO 2 C 2 H 5, CH 2 OH, CH(CH 3)OH, CH 2 C 6 H 4 OH, CH 2 COOH, CH 2 CH 2 COOH, CH 2 CONH 2, C 4 H 8 NH 2, C 3 H 6 NHC(=NH)NH 2, CH 2 C 3 N 2 H 3, and CH 2 SH; R 6 is CH, R 7 is selected from the group consisting of C 2 H 4, C 3 H 6, C 4 H 8, CH 2 C 6 H 4, O, CONHCH O, CO, S, CONHCH S, N, CONHCH N, CON, COCHNH CON, and CONHCH CO, R 8 is selected from the group consisting of OH, SH, H, CH 3, C 3 H 7, C 4 H 9, CH 2 C 6 H 5, and CH 2 CHCH 2, Y and Z are independently selected from the group consisting of H, HCH 2, CH 3, CH(CH 3) 2, CH 2 CH(CH 3) 2, CH(CH 3)C 2 H 5, CH 2 CH 2 SCH 3, CH 2 C 6 H 5, CH 2 C 2 NH 2 C 6 H 4, OCOC 4 N + H 9, CH 2 OH, CH(CH 3)OH, CH 2 C 6 H 4 OH, CH 2 COOH, CH 2 CH 2 COOH, CH 2 CONH 2, C 4 H 8 NH 2, C 3 H 6 NHC(=NH)NH 2, CH 2 C 3 N 2 H 3, and CH 2 SH, R 9 is selected from the group consisting of OH, SH, H, NH 2, CH 3, C 2 H 5, C 3 H 7, C 4 H 9, CH 2 C 6 H 5, CH 2 CHCH 2, NHCH CO 2 H, NH(CH 2) q SH, NH(CH 2 CH 2 NH) r H, [NHCH(C 4 H 8 NH 2)CO] r OH, [NHCH[(CH 2) 3 C(=NH)(NH 2)]CO] r OH, and protamines, q is an integer between 1 and 20, r is an integer between 1 and 18000; a 1, a 2, b, c, d, and e respectively represent the content of each substituent, wherein a 1, a 2, b, and d are independently from 0.01 to 1.9, c and e are independently from 0 to 1.9, and a 1 + a 2 + b + c + d + e = 2.0; and n is from 5 to 100000. p is an integer between 7 and 50; R 1 is selected from the group consisting of H, HCH 2, CH 3, CH 2 SH, CH(CH 3) 2, CH 2 CH(CH 3) 2, CH(CH 3)C 2 H 5, CH 2 CH 2 SCH 3, CH 2 C 6 H 5, CH 2 C 6 H 4 OH, CH 2 C 2 NH 2 C 6 H 4, OCOC 4 N + H 9, CO 2 C 2 H 5, CH 2 CO 2 C 2 H 5, (CH 2) 2 CO 2 C 2 H 5, and HCONHCH(CH 2 C 6 H 5), and R 2 is selected from the group consisting of CH 3, C 3 H 7, C 4 H 9, C 2 H 5, CH 2 C 6 H 5, and CH 2 CHCH 2; R 3 is CH, R 4 is selected from the group consisting of CO 2, CO 2 CH 2 CO 2, CO 2 CH(CH 3)CO 2, and CONHCH CO 2, R 5 is selected from the group consisting of H, CH 3, and C 2 H 5, and W and X are independently selected from the group consisting of H, HCH 2, CH 3, CH(CH 3) 2, CH 2 CH(CH 3) 2, CH(CH 3)C 2 H 5, CH 2 CH 2 SCH 3, CH 2 C 6 H 5, CH 2 C 2 NH 2 C 6 H 4, OCOC 4 N + H 9, CO 2 C 2 H 5, (CH 2) 2 CO 2 C 2 H 5, CH 2 OH, CH(CH 3)OH, CH 2 C 6 H 4 OH, CH 2 COOH, CH 2 CH 2 COOH, CH 2 CONH 2, C 4 H 8 NH 2, C 3 H 6 NHC(=NH)NH 2, CH 2 C 3 N 2 H 3, and CH 2 SH; R 6 is CH, R 7 is selected from the group consisting of C 2 H 4, C 3 H 6, C 4 H 8, CH 2 C 6 H 4, O, CONHCH O, CO, S, CONHCH S, N, CONHCH N, CON, COCHNH CON, and CONHCH CO, R 8 is selected from the group consisting of OH, SH, H, CH 3, C 3 H 7, C 4 H 9, CH 2 C 6 H 5, and CH 2 CHCH 2, Y and Z are independently selected from the group consisting of H, HCH 2, CH 3, CH(CH 3) 2, CH 2 CH(CH 3) 2, CH(CH 3)C 2 H 5, CH 2 CH 2 SCH 3, CH 2 C 6 H 5, CH 2 C 2 NH 2 C 6 H 4, OCOC 4 N + H 9, CH 2 OH, CH(CH 3)OH, CH 2 C 6 H 4 OH, CH 2 COOH, CH 2 CH 2 COOH, CH 2 CONH 2, C 4 H 8 NH 2, C 3 H 6 NHC(=NH)NH 2, CH 2 C 3 N 2 H 3, and CH 2 SH, R 9 is selected from the group consisting of OH, SH, H, NH 2, CH 3, C 2 H 5, C 3 H 7, C 4 H 9, CH 2 C 6 H 5, CH 2 CHCH 2, NHCH CO 2 H, NH(CH 2) q SH, NH(CH 2 CH 2 NH) r H, [NHCH(C 4 H 8 NH 2)CO] r OH, [NHCH[(CH 2) 3 C(=NH)(NH 2)]CO] r OH, and protamines, q is an integer between 1 and 20, r is an integer between 1 and 18000; a 1, a 2, b, c, d, and e respectively represent the content of each substituent, wherein a 1, a 2, b, and d are independently from 0.01 to 1.9, c and e are independently from 0 to 1.9, and a 1 + a 2 + b + c + d + e = 2.0; and n is from 5 to 100000.