A compound, which is a fluorine- and silicon-containing compound of formula: T 1 -(A-B) n -T 2 wherein: A each independently is -R 3 -R 2 -R 1 -R 2 -R 4 -; R 1 is - (SiR 7 R 8 -O) p -SiR 7 R 8 -; R 7 each independently is H, optionally substituted C 1-8 -alkyl, optionally substituted C 1-8 -alkenyl, optionally substituted aryl, vinyl, vinyloxy or C 3-8 -vinylalkyl; R 8 each independently is H, optionally substituted C 1-8 -alkyl, optionally substituted C 1-8 -alkenyl, optionally substituted aryl, vinyl, vinyloxy, C 3-8 -vinylalkyl or -R 11 -R 12 -Rf 1; R 11 is a single bond or -(R 25) x -; R 25 each independently is C 1-6 -alkylene, C 6-10 -arylene or -O-; x is an integer of 1-3; R 12 is -CR 13 =CR 14 - or -CR 13 X 2 CHR 14 -; R 13 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 14 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 2 each independently is H, I, Br or Cl; Rf 1 is each independently fluorine-containing alkyl; p is an integer of 1-50; R 2 is each independently a single bond or -(R 26) y -; R 26 is each independently C 1-6 -alkylene, C 6-10 -arylene or -O-; y is an integer of 1-3; R 3 is -CR 5 =CR 6 - or -CHR 5 CR 6 X 1 -; R 4 is -CR 6 =CR 5 - or -CR 6 X 1 CHR 5 -; R 5 is each independently H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 6 is each independently H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 1 is each independently I, Br or Cl; B each independently is a single bond or -Rf 2 -; Rf 2 each independently is fluorine-containing alkylene; n is an integer of 3 - 500; and T 1 and T 2 each independently are an end group. A each independently is -R 3 -R 2 -R 1 -R 2 -R 4 -; R 1 is - (SiR 7 R 8 -O) p -SiR 7 R 8 -; R 7 each independently is H, optionally substituted C 1-8 -alkyl, optionally substituted C 1-8 -alkenyl, optionally substituted aryl, vinyl, vinyloxy or C 3-8 -vinylalkyl; R 8 each independently is H, optionally substituted C 1-8 -alkyl, optionally substituted C 1-8 -alkenyl, optionally substituted aryl, vinyl, vinyloxy, C 3-8 -vinylalkyl or -R 11 -R 12 -Rf 1; R 11 is a single bond or -(R 25) x -; R 25 each independently is C 1-6 -alkylene, C 6-10 -arylene or -O-; x is an integer of 1-3; R 12 is -CR 13 =CR 14 - or -CR 13 X 2 CHR 14 -; R 13 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 14 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 2 each independently is H, I, Br or Cl; Rf 1 is each independently fluorine-containing alkyl; p is an integer of 1-50; R 7 each independently is H, optionally substituted C 1-8 -alkyl, optionally substituted C 1-8 -alkenyl, optionally substituted aryl, vinyl, vinyloxy or C 3-8 -vinylalkyl; R 8 each independently is H, optionally substituted C 1-8 -alkyl, optionally substituted C 1-8 -alkenyl, optionally substituted aryl, vinyl, vinyloxy, C 3-8 -vinylalkyl or -R 11 -R 12 -Rf 1; R 11 is a single bond or -(R 25) x -; R 25 each independently is C 1-6 -alkylene, C 6-10 -arylene or -O-; x is an integer of 1-3; R 12 is -CR 13 =CR 14 - or -CR 13 X 2 CHR 14 -; R 13 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 14 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 2 each independently is H, I, Br or Cl; Rf 1 is each independently fluorine-containing alkyl; R 11 is a single bond or -(R 25) x -; R 25 each independently is C 1-6 -alkylene, C 6-10 -arylene or -O-; x is an integer of 1-3; R 25 each independently is C 1-6 -alkylene, C 6-10 -arylene or -O-; x is an integer of 1-3; R 12 is -CR 13 =CR 14 - or -CR 13 X 2 CHR 14 -; R 13 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 14 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 2 each independently is H, I, Br or Cl; R 13 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 14 each independently is H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 2 each independently is H, I, Br or Cl; Rf 1 is each independently fluorine-containing alkyl; p is an integer of 1-50; R 2 is each independently a single bond or -(R 26) y -; R 26 is each independently C 1-6 -alkylene, C 6-10 -arylene or -O-; y is an integer of 1-3; R 26 is each independently C 1-6 -alkylene, C 6-10 -arylene or -O-; y is an integer of 1-3; R 3 is -CR 5 =CR 6 - or -CHR 5 CR 6 X 1 -; R 4 is -CR 6 =CR 5 - or -CR 6 X 1 CHR 5 -; R 5 is each independently H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 6 is each independently H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 1 is each independently I, Br or Cl; R 5 is each independently H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; R 6 is each independently H, C 1-3 -alkyl, an ester group, nitrile, nitro, C 1-3 -alkoxy or aryloxy; X 1 is each independently I, Br or Cl; B each independently is a single bond or -Rf 2 -; Rf 2 each independently is fluorine-containing alkylene; n is an integer of 3 - 500; and T 1 and T 2 each independently are an end group.