Aug. 2, 2007  9  US 2007/0179263 A  1  (d) In the Case of the Bond -A- Being an Amide Bond  [0088]  Concretely there are:  -D-C-N-Ry", -D-N-C-Ry"  II  I  I  II  0  R’  R’  0  -D-C-N-Ry", -D-N-C-Ry",  II  I  I  II  0  H  H  0  0  II  -D-C-N-Ry",  II  I  -D-N-C-Ry"  I  0  CH3  CH3  NH  N-CH3  II  II  -D-C-NH-Ry", -D-C-NH-Ry"  0  0  II  II  -D-S-N-Ry", -D-N-S-Ry",  II  I  I  II  0  R’  R’  0  0  0  II  II  -D-P-N-Ry", -D-N-P-Ry"  II  I  I  II  0  R’  R’  0  NR’  II  -D-C-N-Ry"  I  R"  0  0  II  II  -D-P-N-Ry" -D-N-P-Ry"  II  I  ,  I  II  ,  0  H  H  0  0  0  II  II  -D-S-N-Ry", -D-N-S-Ry",  II  I  I  II  0  CH3  H3C  0  0  0  II  II  -D-P-N-Ry" -D-N-P-Ry"  II  I  ,  I  II  0  CH3  H3C  0  0  0  II  II  -D-S-N-Ry", -D-N-S-Ry",  II  I  I  II  0  H  H  0  and the like, wherein R’ is hydrogen atom or a hydrocarbon  group having 1 to 10 carbon atoms, and from the point of not  lowering oxidation resistance and heat resistance, it is pref› erable that R’ is hydrogen atom or an alkyl group having 1  to 5 carbon atoms, particularly preferably hydrogen atom or  methyl.  [0089]  Examples thereof are:  and the like.  (f) in the Case of the Bond -A- Being an Amidine Bond  [0094]  Concretely there are preferably:  and the like, wherein R’ and R" are the same or different and  each is hydrogen atom or a hydrocarbon group having 1 to  10 carbon atoms.  [0095]  From the point of not lowering oxidation resistance  and heat resistance, it is preferable that R’ and R" are  hydrogen atom or an alkyl group having 1 to 5 carbon atoms,  particularly preferably hydrogen atom or methyl.  [0096]  Preferred examples thereof are:  and the like.  [0090]  Those bonds are preferred from the point that  oxidation resistance and heat resistance are excellent.  (e) In the Case of the Bond-A- Being a SulfonicAcidAmide  Bond or Phosphoric Acid Amide Bond  [0091]  Concretely there are preferably:  and the like.  [0097]  Among those bonds exemplified in (a) to (f), a  divalent alkylene group, divalent fluorine-containing alky› lene group, ether bond, amide bond and amidine bond are  preferred particularly from the viewpoint of oxidation resis› tance.  and the like, wherein R’ is hydrogen atom or a hydrocarbon  group having 1 to 10 carbon atoms.  [0092]  From the point of not lowering oxidation resistance  and heat resistance, it is preferable that R’ is hydrogen atom  or an alkyl group having 1 to 5 carbon atoms, particularly  preferably hydrogen atom or methyl.  [0093]  Preferred examples thereof are:  [0098]  Also in Ry exemplified in (a) to (f), examples of Ry  exemplified supra in (i), (ii) and (iii) can be preferably used  similarly as the examples of the moiety Ry" of the aromatic  ring structure having the functional group  Y.  [0099]  In the aromatic compound of the formula (1) to be  used for the ionic liquid type functional material of the  present invention, Ra is a residue bonded to another end of  -D- and is not limited particularly as far as it is selected from  monovalent organic groups which have 1 to 20 carbon atoms  and do not contain the structure -D-.  [0100]  Preferred examples of Ra are (iv) fluorine-contain› ing alkyl groups Rx which have 1 to 20 carbon atoms and  may have ether bond.  -continued 