NOVELTY - Making organoboron compounds involves photoirradiating and/or heating a reactant; and obtaining an elimination product; where the reactant comprises: (i) a boron atom that is bonded at least to a first moiety and a second moiety, the first moiety being a terminal moiety, and the second moiety being a Lewis base, and (ii) a carbon atom that is proximal to the boron and that is bonded to at least one hydrogen atom.    USE - The methods are useful for making organoboron compounds; producing electroluminescence; harvesting photons; separating charges; and for making patterned fluorescent film. The organoboron compounds are useful in hydrogen storage material, optoelectronic material, sensor, bioactive molecule, and/or electroluminescent material (all claimed).    ADVANTAGE - The organoboron compounds have good solubility in hydrophobic solvents. Luminescent compounds as semiconductors are advantageous due to their long lifetime, efficiency, low operating voltage and low cost.    DETAILED DESCRIPTION - Making organoboron compounds involves photoirradiating and/or heating a reactant; and obtaining an elimination product; where the reactant comprises: (i) a boron atom that is bonded at least to a first moiety and a second moiety, the first moiety being a terminal moiety, and the second moiety being a Lewis base, and (ii) a carbon atom that is proximal to the boron and that is bonded to at least one hydrogen atom. The elimination product differs from the reactant such that the elimination product: (a) has a bond between the boron and the carbon, which may be a single bond or an additional bond between the boron and the carbon; and (b) does not include the first moiety. INDEPENDENT CLAIMS are included for:    (1) a method of producing electroluminescence, which involves providing the electroluminescent elimination product; and applying a voltage across the compound so that the compound electroluminesces;    (2) a method of harvesting photons, which involves providing the elimination product; and providing light such that photons strike the elimination product and charge separation occurs in the elimination product;    (3) a method of separating charges, which involves providing the elimination product; and providing light such that photons strike the elimination product and charge separation occurs in the elimination product, optionally where the separated charges recombine and photons are released;    (4) a method of making a patterned fluorescent film, which involves casting a polymer doped with the reactant to form a polymeric film; positioning a patterned mask having solid areas and open areas between the film and a source of light; and exposing the mask-positioned film to the light; and obtaining a patterned film with non-luminescent areas corresponding to the solid areas of the mask, and luminescent areas corresponding to the open areas of the mask that allowed the light to strike the film;    (5) a photocopier employing the method above;    (6) a photovoltaic device employing the method above;    (7) a photoreceptor employing the method above;    (8) a solar cell employing the method above;    (9) a semiconductor employing the method above;    (10) a patterned fluorescent polymer film made by the method above, optionally where the film is used in an optoelectronic device;    (11) an article that comprises elimination product made by the method above, where the elimination product is doped in a polymer film, optionally where the doped film is fluorescent, phosphorescent, and/or electroluminescent;    (12) an electroluminescent device for use with an applied voltage, comprising a first electrode, an emitter which is an electroluminescent elimination product, optionally in a host layer, and a second, transparent electrode, where voltage is applied to the two electrodes to produce an electric field across the emitter so that the emitter electroluminesces; or an electroluminescent device for use with an applied voltage, comprising a first electrode, a second, transparent electrode, an electron transport layer adjacent the first electrode, a hole transport layer adjacent the second electrode, and an emitter which is an electroluminescent elimination product, optionally in a host layer, interposed between the electron transport layer and the hole transport layer, where voltage is applied to the two electrodes to produce an electric field across the emitter so that the emitter electroluminesces;    (13) a light emitting device comprising an anode; a cathode; and an emissive layer disposed between the anode and the cathode, where the emissive layer comprises the elimination product;    (14) an optoelectronic device comprising the elimination product made by the method above;    (15) a consumer product comprising the device; and    (16) an organoboron compound made by the method above; or organoboron compounds of formulae 3-12.    G=independently carbon or a heteroatom (e.g., N, S, O, or P);    X and Y'=independently carbon or nitrogen;    R=an aliphatic or aryl (which includes heteroaryl) moiety that may be further substituted;    R'=an aliphatic or aryl (which includes heteroaryl) moiety that may be further substituted and is optionally a fused ring(s);    t=independently 0 or 1;    p=0-10;    dotted circle=optional aromaticity; and    rings=may be substituted or unsubstituted.