TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The ionic functional group comprises substituted 2H-imidazol-1-ium groups of formula (IIa), substituted pyrimidin-1-ium groups of formula (IIb), substituted 2H-pyrrolium groups of formula (IIc), substituted pyridinium groups of formula (IId) or ammonium groups of formula (-N+(R)3) (IIe).R = alkyl, vinyl, aryl, methacrylate, acrylate or organic functional group.    TECHNOLOGY FOCUS - POLYMERS - Preparation (Claimed): The preparation of (I), comprises introducing an ionic functional group to a ladder-like polysilsesquioxane for ionizing at least one side chain of the polysilsesquioxane. Preferred Components: (I) are functionalized with bis(trifluoromethane)sulfonimide-, hexafluorophosphate-, perchlorate- or boron tetrafluoride anion or inorganic salts through anion exchange. (I) are homo- or copolymers having regular ladder-like structure. (I) exhibit a number-average molecular weight of 100-100000, an ionic conductivity of greater than or equal to 10-5 S/cm at room temperature, and an electrochemical stability of 1.5-4.5 V compared to lithium ion electrode. The gel polymer electrolyte exhibits an ionic conductivity of greater than or equal to 10-4 S/cm at room temperature. Preferred Method: The method further comprises exchanging ions of the ionic functional group. Preferred Definitions:    R1-R3 = imidazolium, preferably benzimidazolium of propyl-imidazolium, pyridinium, trialkyl ammonium or organic ionic functional groups.    EXAMPLE - 0.2 g Potassium carbonate was dissolved in 24 g distilled water. Then 40 g tetrahydrofuran was added to the obtained solution and stirred for 20 minutes to obtain a uniformly mixed solution. Then 0.4 moles chloropropyl trimethoxysilane was added dropwise to the solution and stirred. Then the obtained mixture was reacted for 72 hours at 25 degrees C to obtain ladder-type and crosslinkable methacrylate based polysilsesquioxane. Then 4 g methyl imidazole was added to 10 g polysilsesquioxane. Then 100 ml dimethylformamide solution was added dropwise to the obtained mixture. Then the mixture was reacted for 24 hours at 70 degrees C. Then the reaction was worked up to obtain poly-chloro-imidazolium-silsesquioxane. Then 1 g poly-chloro-imidazolium-silsesquioxane was dissolved in 5 ml water. Then 0.2 g lithium-bis(trifluoromethanesulfonyl)imide was added to the obtained solution to obtain poly-chloro-methyl sulfonimide-imidazolium-silsesquioxane.