TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Condition: Preferably, the structure is heated at 90-160 degrees C for 1-48 hours.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No general preparation given. Preferred Compounds: The fullerene is chosen from 54 compounds e.g. compounds of formulae (I)-(X).S1-S6=-(-Y'-(Oxa)m), H, or 1-44C linear or branched, saturated or unsaturated, cyclic or acyclic alkyl, 6-48C aromatic group mono- or poly-condensed with cycloaliphatic rings, with aromatic rings or with heteroaromatic rings, heteroaryl, alkoxy, or carbonyl of ketone or ester type, with at least one being -(-Y'-(Oxa)m);andOxa1-Oxa3=2-oxazoline group or 5,6-dihydro-2-oxazine group.The initiator is Lewis acid, such as boron trifluoride, iron trichloride, strong protic acid or their esters, such as methyl tosylate and methyl triflate, and/or alkyl or aryl halide, such as methyl iodide and benzyl bromide. The organic solvent is aprotic polar solvent, such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide, and acetonitrile, aromatic solvent, such as toluene and xylene, and/or chlorinated solvent, such as chlorobenzene, 1,2-dichlorobenzene, chloroform, methylene chloride, and trichloroethylene.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The photoactive organic polymer is polythiophene, such as poly(3-hexylthiophene), poly(3-octylthiophene), and poly(3,4-ethylenedioxythiophene), alternating conjugated copolymer comprising benzothiadiazole units such as poly(N-9"-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)) and poly(2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta(2,1-b;3,4-b')-dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)), alternating conjugated copolymer comprising thieno(3,4-b)pyrazidine units, alternating conjugated copolymer comprising quinoxaline units, alternating conjugated copolymer comprising silole, such as, for example, copolymer of 9,9-dialkyl-9-silafluorene, and/or alternating conjugated copolymer comprising condensed thiophene units, such as, for example, copolymer of thieno(3,4-b)thiophene and benzo(1,2-b:4,5-b')dithiophene. The photoactive organic polymer functionalized with phenol, thiophenol, carboxyl and/or thiocarboxyl groups is polythiophene, such as poly(3-hexylthiophene), poly(3-octylthiophene), and poly(3,4-ethylenedioxythiophene). Preferred Definitions:    Oxa=2-oxazoline group of formula (i) or 5,6-dihydro-2-oxazine group of formula (ii);    R1-R6=H, 1-12C linear or branched alkyl, such as methyl, ethyl, propyl, butyl, hexyl, octyl, decyl and dodecyl, phenyl, benzyl, or hydroxyalkyl, such as hydroxymethyl;    x=60-90;    Y'=polyvalent organic group chosen from -(-CH2-)n-, -CH=CH-(-CH2-)n-, -CC-(-CH2-)n-, -(-O-CH2-CH2-)n-, -(-CH2-)n-O-(-CH2-)p-, -(-CH2-)n-S-(-CH2-)p-, -(-CH2-)n-N(-(CH2)p-)(-(CH2)q-), -(-CH2-)n-Si(-(CH2)p-)(-(CH2)q-)(-(CH2)r-), -(-CH2-)n-C(-(CH2)p-)(-(CH2)q-)(-(CH2)r-), -(-CH2-)n-C(=O)-, -(-CH2-)n-C(=O)-O-, and groups of formulae (iii)-(xxix);and    n,p,q,r=1-12.    EXAMPLE - A mixture of (in g) 4-(2-(2-(2-iodo-ethoxy)-ethoxy)-ethoxy)-benzaldehyde (3.04), potassium carbonate (4.79), and 4-(4,5-dihydro-oxazol-2-yl)-phenol (1.08) in acetone (300 ml) was heated at reflux for 7 hours. The reaction mixture was then left to reach room temperature, filtered, and dry-concentrated under vacuum. The oily residue obtained was purified using pentane/2-propanol, to obtain 4-(2-(2-(2-(4-(4,5-dihydro-oxazol-2-yl)-phenoxy)-ethoxy)-ethoxy)-ethoxy)-benzaldehyde (1.1). A mixture of the obtained compound (102 mg), sarcosine (35 mg), and 60C fullerene (362 mg) in chlorobenzene (125 ml) was placed at reflux for 10 hours. After cooling to room temperature, the reaction mixture was filtered and concentrated under vacuum to 30 ml. The reaction product was purified using toluene/ethyl acetate, to obtain functionalized fullerene (41 mg).