TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): Preparation of (A) comprises reacting at least one fullerene having 60, 70, or 84 carbon atoms, with at least one sulfur ylide of formula (CH 3) 2S +-C -R111-R222.R111, R222= Y9 m-B9 n-Y1 m1-B1 n1-Y2 m2-A1 i1K1 p, H, or group comprising 1-44C alkyl, linear or branched, optionally saturated cyclyl or acyclyl, 6-18C aromatic group, mono- or poly-condensed with cycloaliphatic rings, with aromatic rings or heteroaromatic rings, heteroaromatic, alkoxy or carbonyl of ketone or ester.Preferred Components: (I) is substituted homo or heterocyclic compound e.g. substituted cyclopentane compounds of formula (q1), substituted pyrrolidine compounds of formula (q2) or substituted cyclohexane compounds of formula (q3)-(q5). (II) is substituted homo or heterocyclic compound e.g. substituted 1,1'-bi(cyclopropyl) compounds of formula (e1)-(e3) or substituted (2R)-2,2'-biaziridine compounds of formula (e4) or (e5).R21-R28=-Y9 m-B9 n-Y1 m1-B1 n1-Y2 m2-A1 i10K1 p- (when i10 is 0 and K1 is does not represent C x fullerene), H, or group comprising 1-44C alkyl, linear or branched, optionally saturated cyclyl or acyclyl, 6-18C aromatic group, mono- or poly-condensed with cycloaliphatic rings, with aromatic rings or heteroaromatic rings, heteroaromatic, alkoxy or carbonyl of ketone or ester; andR15=-Y9 m-B9 n-Y1 m1-B1 n1-Y2 m2-A1 i10K1 p- (when i10 is 0 and K1 is does not represent C x fullerene), H, or group comprising 1-44C alkyl, linear or branched, optionally saturated cyclyl or acyclyl, 6-8C aromatic group, mono- or poly-condensed with cycloaliphatic rings, with aromatic rings or with heteroaromatic rings, heteroaromatic group, alkoxy, carbonyl of ketone or ester.Provided that at least one of R21-R28 is Y9 m-B9 n-Y1 m1-B1 n1-Y2 m2-A1 i10K1 p. Preferred Definitions:    x=60;    n, n1=1;    K1=fullerene;    p=1;    i=1;    Y1=9,9-dioctylfluorene;    m1=1;    m, m2=0;    B9, B1=2,5-thienylene or 2,2'-dithieylene;    A9, A1=N-methylpyrrolidinyl (preferred), cyclopropyl, aziridin-1-yl, cyclobut-1-en-1-yl, cyclobut-1-en-2-yl, cyclobutyl, cyclopentyl, substituted pyrrolidin-1-yl moiety of formula (p1), 4,5-dihydroisoxazol-3-yl, 4,5-dihydro-1H-pyrazol-3-yl, furanyl, thiophenyl, cyclohexyl or cyclohexenyl;    R1a=H, linear or branched 1-20C alkyl, linear or branched 1-20C alkoxy or COOR1;    Y9, Y2=e.g. phenylene, biphenylene, naphthalene-diyl, pyridine-diyl, pyrimidinyl, 2,2'-bipyridinyl, 1,10-phenanthroline-diyl, phenazine-diyl, 1-benzothien-diyl, 1,3-benzothiazol-diyl, 3a,7a-dihydro-1,3-benzoxazol-di-yl, 3a,7a-dihydro-1-benzofuran-di-yl, 1,3,3a,7a-tetrahydro-2,1,3-benzoxadiazol-di-yl, 9H-fluorene-diyl or dibenzo(b,d)thiophene-diyl, substituted 10,10a-dihydro-4aH-phenoxazine moiety of formula (p2), 9,9-dioctyl-9H-fluorene,2,7-diyl or 2,1,3-benzothiadiazole4,7-diyl; and    B9, B1=thien-di-yl, bithiophene-diyl, trithiophene-diyl, thieno(3,2-b)thiophene-diyl, thieno(2,3-b)thiophene-diyl, thieno(3,4-b)thiophene-diyl, bisthieno(2,3-d:3',2'-b)thiophene-diyl, thiophene-2,5-diyl, 2,2'-bithiophene-5-5'-diyl or 3-(hexyloxy)thiophene-2,5-diyl.    SPECIFIC COMPOUNDS - 3 Compounds (A) are disclosed i.e. C 60-fullerene-5-(7-(5-(1-methylpyrrolidin-2-yl)thiophen-2-yl)-9,9-dioctyl-9H-fluoren-2-yl)thiophene-2-carbaldehyde of formula (Ia), 2,2'-(5,5'-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(thiophene-5,2-diyl))bis(1-methylpyrrolidine)(C 60-fullerene), and 2,2'-(5',5''-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(2',2''-bithiophene-5',5'-diyl))bis(1-methylpyrrolidine) (C 60-fullerene).    EXAMPLE - Mixture of 9,9-dioctyifluorene-2,7-diboronic acid, 530 mg 5-bromo-2-thiophene carbaldehyde, and 36 mg palladium(tetrakis)triphenylphosphine in 15 ml N,N-dimethylformamide and 2 ml sodium carbonate was heated to reflux temperature for 4 hours, under a stream of argon. The reaction mixture was cooled, 100 ml distilled water were added and filtered to obtain solid. The solid was partially dissolved in 100 ml ethyl acetate, subsequently filtered and the liquid phase obtained was concentrated to obtain reaction raw product. The product was purified to give 5,5'-(9,9-dioctyl-9H-fluorene-2,7-diyl)dithiophene-2-carbaldehyde (E1). 170 mg (E1), 200 mg fullerene C 60, and 250 mg N-methylglycine in 100 ml toluene was heated to reflux temperature for 3 hours. After cooling to room temperature, the reaction mixture was filtered and the obtained solution was concentrated to obtain reaction raw product. The reaction raw product was purified to give C 60-fullerene-5-(7-(5-(1-methylpyrrolidin-2-yl)thiophen-2-yl)-9,9-dioctyl-9H-fluoren-2-yl)thiophene-2-carbaldehyde.