US 2007/0179263 A  11  Aug. 2, 2007  and the like.  (vi) Monovalent Organic Groups Ry’ Having 2 to 20 Carbon  Atoms Which Have an Aromatic Ring Structure and at Least  One Selected from the Basic Functional Groups Y 1  and/or  the Salts Y $^{2 }$of the Basic Functional Groups  [0110]  Concretely the same Ry as mentioned supra can be  used preferably, thereby being capable of introducing not  less than two Ry to one molecule of the compound of the  formula (1) of the present invention and enabling functions  of the ionic liquid type functional material to be exhibited  more effectively.  [0111]  Preferred examples of Ry’ are the same as the  examples of Ry (-A-Ry") raised supra.  [0112]  The aromatic compound of the formula (1) to be  used for the ionic liquid type functional material of the  present invention is comprised of the fluorine-containing  ether moiety -D- to be bonded to the moiety Ry of the  aromatic ring structure containing the functional group Y  and the residue Ra bonded to another end of -D-, in which  to the moiety Ry is bonded at least one -D- (-D-Ra) or may  be bonded 2 to 4-D- (-D-Ra) (mis from 2 to 4 in the formula  (1 )).  [0113]  Preferred examples of the aromatic compounds of  the formula (1) are those obtained in combination of the  above-mentioned preferred examples of the fluorine-con› taining ether unit -D-, preferred examples of the moiety Ry  having the functional group Y and aromatic ring structure,  preferred examples of the bond for bonding D to Ry and  preferred examples of the residue Ra.  [0114]  Examples of the aromatic compound of the formula  (1) when mis 1 are as follows.  (1-a) Aromatic Compounds in Which -D- and Ry are  Bonded Directly and Ra is a Perfluoroalkyl Group  [0115]  Preferred examples thereof are:  and the like.  -continued  CH2=CF-C-O-CH2CH20-,  II  0  -continued 