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The copolymer POPD-co-PNA quenches BSA fluorescence revealing many of its photophysical characteristics including a higher association constant and its scintillating presence on the latter.

[reaction: see text]. A new method to produce benzimidazolium salts based on a successive Buchwald-Hartwig amination and ring closure is reported. A variety of different benzimidazolium salts can be prepared using this procedure. Amines that bear an alpha-chiral group undergo the reaction to furnish chiral benzimidazolium salts. The salts that lack a C2 substituent on the heterocycle are readily deprotonated to give nucleophilic carbenes.

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Effect of copolymerization on the fluorescent properties of polycarbazole and poly(o-phenylenediamine).

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