TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): (I) is prepared by reacting (II) with an acid (0.1-3 molar equivalents of dithiocarbamate quantity); and adding a nucleophile agent (0.1-10 molar equivalents of dithiocarbamate quantity) to obtain (I). Preferred Components: The nucleophile agent is alcohol, thiol, phenol, thiophenol, alcoholate, thiolate, phenolate, thiophenolate, dialkylsulfur, aminoalkane, aniline or substituted aniline, benzylamine or substituted benzylamine, carboxylic acid, carboxylic aldehyde, carboxylic acid ester, thiocarboxylic acid or its ester, sulfonic acid, xanthate, carboxylic acid amide, amino-acid, peptide, nucleoside, heterocyclic base, alkaloid or modified DNA. The acid exhibiting a pKa of - 10 to 11 is an organic acid from carboxylic acid, phosphonic acid, and/or sulfonic acids.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The modification forms a conjugated polymer of formula (-Ar-C(R3)=C(R4)-)n. Preferred Method: The modification method produces a polymer or copolymer comprising repeating units of formula (III). Preferred Definitions:    Ar=1,4-phenylene, 2,6-naphthalenediyl, 1,4-naphthalenediyl, 1,4-anthracenediyl, 2,6-anthracenediyl, 9,10-anthracenediyl, 2,5-thienylene, 2,5-furanediyl, 2,5-pyrrolediyl, 1,3,4-oxadiazole-2,5-dyil, 1,3,4-thiadiazole-2,5-diyl, 2,3-benzo(c)thienylene, thieno(3,2-b)thiophene-2,5-diyl, pyrrolo(3,2-b)pyrrole-2,5-diyl, pyrene-2,7-diyl; 4,5,9,10-tetrahydropyrene-,2,7-diyl, 4,4'-biphenylene, phenantrene-2,7-diyl, 9,10-dihydrophenantrene-2,7-diyl, dibenzofurane-2,7-diyl, dibenzothiophene-2,7-diyl, optionally substituted triptycenylene, optionally substituted pentiptycenylene or optionally substituted iptycenylene.    SPECIFIC COMPOUNDS - 31 Compounds of (I) are specifically claimed, e.g. formula (Ia)-(Ic); triptycene-1,4-diylbismethylene N,N-diethyl dithiocarbamate; or 5,8-bis(2-ethylhexyloxy)triptycene-1,4-diylbismethylene N,N-diethyl dithiocarbamate.    EXAMPLE - A dithiocarbamate compound of formula (IV) (70 mg) was dissolved in chlorobenzene (5 ml) and benzenesulfonic acid (1.5 molar equivalents based on dithiocarbamate quantity), heated at 70 degrees C under nitrogen atmosphere for 10 minutes to obtain a precursor polymer. The obtained precursor was reacted with maleimide derivative of formula (V) (5 molar equivalents) and benzenesulfonic acid (1.5 molar equivalent) to obtain (Ia).