A polyimide polymer, comprising the reaction product of components (a), (b), (c), and optionally (d), wherein components (a), (b), (c), and (d) are: (a) at least one diamine selected from the group consisting of a diamine of Structure (la) and a diamine of Structure (lb): (b) at least one diamine of Structure (Ila): wherein z is an integer ranging from 0 to 12, and R 20 and R 21 are independently a hydrogen atom, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted phenyl group, at least one diamine of Structure (llb): wherein R 20 is a hydrogen atom, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted phenyl group, R 22 is a substituted or unsubstituted C 1 -C 6 linear or branched alkylene group, and R 23 is a substituted or unsubstituted C 1 -C 20 linear or branched alkyl group or a C 6 -C 20 substituted or unsubstituted aryl group, or at least one diamine of Structure (llc): wherein R 20 is a hydrogen atom, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted phenyl group; R 22 a substituted or unsubstituted C 1 -C 6 linear or branched alkylene group; R 24 is a O or S atom, -NR 25 -, -CH(R 25 )-, or -(CH 3 ) 2 -, in which R 25 is a C 1 -C 6 substituted or unsubstituted linear or branched alkyl group; (c) at least one tetracarboxylic acid dianhydride, and optionally (d) at least one compound comprising a first functional group reactive with an amine or an anhydride and at least a second functional group selected from the group consisting of a substituted or unsubstituted alkenyl group and a substituted or unsubstituted alkynyl group, wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 11 , R 12 , R 13 , and R 14 independently, is H, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted C 5 - C 7 cycloalkyl group. (a) at least one diamine selected from the group consisting of a diamine of Structure (la) and a diamine of Structure (lb): (b) at least one diamine of Structure (Ila): wherein z is an integer ranging from 0 to 12, and R 20 and R 21 are independently a hydrogen atom, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted phenyl group, at least one diamine of Structure (llb): wherein R 20 is a hydrogen atom, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted phenyl group, R 22 is a substituted or unsubstituted C 1 -C 6 linear or branched alkylene group, and R 23 is a substituted or unsubstituted C 1 -C 20 linear or branched alkyl group or a C 6 -C 20 substituted or unsubstituted aryl group, or at least one diamine of Structure (llc): wherein R 20 is a hydrogen atom, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted phenyl group; R 22 a substituted or unsubstituted C 1 -C 6 linear or branched alkylene group; R 24 is a O or S atom, -NR 25 -, -CH(R 25 )-, or -(CH 3 ) 2 -, in which R 25 is a C 1 -C 6 substituted or unsubstituted linear or branched alkyl group; (c) at least one tetracarboxylic acid dianhydride, and optionally (d) at least one compound comprising a first functional group reactive with an amine or an anhydride and at least a second functional group selected from the group consisting of a substituted or unsubstituted alkenyl group and a substituted or unsubstituted alkynyl group, wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 11 , R 12 , R 13 , and R 14 independently, is H, a substituted or unsubstituted C 1 -C 6 linear or branched alkyl group, or a substituted or unsubstituted C 5 - C 7 cycloalkyl group. <EOS>