Research of Chemiluminescence and Bioluminescence intend to create new functional System

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1-1 : In order to prepare a high efficient chemiluminescent imidazole system, we tried to introduce an imidazole ring into the second position of rubrene which may help it to gain a very efficient chemiluminescent compound because of efficient fluorescence and low emission energy in an energy acceptor-emitter of the rubrene moiety.1-2 : Adiabatic photocycloreversion of biplanemers (4π+4π cycloadducts of aromatic compounds) is an excited state because the efficiency of the reaction can be monitored by the emission from the photoproduct (photo-chemiluminescence, PCL), and factors controlling the efficiency for excited product formation and shapes of potential surface of an excited state have been discussed.1-3 : The chemiluminescence compound 2-methyl-6-(4-methoxyphenol)imidazo[1, 2-α]pyrazin-3(7H)-one (MCLA) was attached to cyclomaltooligosaccharides (cyclodextrins) through a single spacer by the formation of an amide bond. The properties of oxygen-induced chemiluminescence of the synthesized cyclodextrin-bound MCLA were investigated in an aqueous phosphate buffer, pH 8.0. The light-emitting efficiency was remarkably dependent on the kind of bound cyclodextrin, spacer length between the MCLA and cyclodextrin, and the binding site in cyclodextrin. The light-emitting efficiencies of cyclomaltooctaose (γ-cyclodextrin)-bound compounds were higher than those of cyclomaltohexaose- or cyclomaltoheptaose-bound compounds.2 : dl-Cypridina luciferin and its analogs were synthesized from 2-aminopyrazine by an eight-step method that included two regio-selective Pd-mediated cross couplings, and their chemi- and bioluminescent actives, were compared.3 : We have scattered about 100 thiourea derivatives in order to develop a sensitive chemiluminescence detection for luminol derivatives. The proposed novel chemiluminescence reaction for luminol and luminol derivatives was applied to a high performance liquid chromatography (HPLC) assay for amino compounds.