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Two new bithiophene derivatives named as 5, 5'-bis(p-N,N-dimethylaminostyryl)-2, 2'-bithiophene (BMSBT), and 5, 5'-bis(p-N,N-diethylaminostyryl)-2, 2'-bithiophene (BESBT) havebeen synthesized. Both compounds can emit strong single-photon e