| abstract |
The present invention provides a gel containing a crosslinked polymer having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group, and a condensate of a compound represented by the following formula (I): Si{R1—N(R2)(R3)}(OR4)(OR5)(R6) (wherein each group is as defined in the DESCRIPTION). |