content_image/936557.jpg content_image/936545.jpg content_image/936558.jpg
<img src='content_image/936557.jpg'>

and the like. 

[0074] Among the moieties of the above-mentioned aro› matic ring structures (i) to (iii), preferred are the aromatic ring structures (ii) in which the atom forming the functional group Y ( cation portion) constitutes the aromatic ring at the same time and the aromatic ring structures (iii) subjected to replacement by the functional group because an amount ( concentration) of functional groups can be increased, and also because it is possible to enhance functions as an ionic liquid type functional material, a dissolving power of a solute and ability of acid trap in the case of a reaction medium and extraction medium, and moving performance in the case of an actuator. 

[0075] Also those moieties (ii) and (iii) are preferred from the viewpoint of oxidation resistance. 

[0076] Further among the ring structures of the moiety Ry of the aromatic ring structures of the present invention, monocyclic structures are particularly preferred and can decrease a viscosity and undergo liquefaction effectively. 

[0077] In the compound of the formula (1) to be used for the ionic liquid type functional material of the present invention, the first bonding of the organic group Ry con› taining the aromatic ring structure and having the functional group Y to the moiety -D- of the fluorine-containing ether structure is the direct bonding of Ry exemplified in (i), (ii) and (iii) above to -D-, and the second one is the bonding via a bond (spacer) being provided between Ry and -D-. When Ry and -D- are bonded via the bond, it is assumed that the bond (-A-) is included in Ry (when Ry has the bond -A-, Ry is represented by -A-Ry"). 

[0078] The direct bonding of Ry to -D- is preferred particularly from the viewpoint of heat resistance and oxi› dation resistance. 

[0079] When bonding via the bond, the bond (-A-) is not limited particularly as far as it is a divalent bond with covalent bonding. The bond (-A-) is selected from divalent hetero atoms and divalent organic groups. 

[0080] More preferred are ether bond (---0-), thioether bond (-S-), divalent alkylene group, divalent fluorine› containing alkylene group, ester bond, sulfonic ester bond, phosphoric ester bond, acid amide bond, amidine bond and the like from the point of not lowering oxidation resistance. 

(a) In the Case of the Bond-A- Being a DivalentAlkylene Group or Divalent Fluorine-containing Alkylene Group 

[0081] The divalent alkylene group is preferably selected from divalent alkylene groups having 1 to 10 carbon atoms, and is more preferably a divalent alkylene group having 1 to 5 carbon atoms, particularly preferably methylene group or ethylene group. Hydrocarbon groups having a too long chain is not preferred because oxidation resistance is lowered. 

[0082] The divalent fluorine-containing alkylene group is the above-mentioned alkylene group in which a part or the whole of hydrogen atoms are replaced by fluorine atoms. From the viewpoint of oxidation resistance, replacement by more fluorine atoms is preferred, and particularly preferred are perfluoro alkylene groups. 

[0083] Preferred examples thereof are: 

<img src='content_image/936545.jpg'>

and the like. 

[0084] Those bonds are preferred from the viewpoint of oxidation resistance. 

(b) In the Case of the Bond -A- Being an Ether Bond (-0-) or Thioether Bond (-S-) 

[0085] Concretely there are -D-O-Ry", -D-S-Ry" and the like. 

[0086] Particularly preferred is an ether bond from the viewpoint of oxidation resistance, heat resistance and chemical resistance. 

(c) In the Case of the Bond -A- Being an Ester Bond, Sulfonic Ester Bond or Phosphoric Ester Bond 

[0087] Examples thereof are: 

<img src='content_image/936558.jpg'>

and the like. 

