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Synthesis of a new conjugated polymer based on benzimidazole and its sensory properties using the fluorescence-quenching effect

机译:基于苯并咪唑的新型共轭聚合物的合成及其荧光猝灭效应

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A new anionic conjugated polymer containing a fluorene group in the main chain was designed and synthesized from poly(2,7-(9,9'-dihexylfluorene)-5,5'-bibenzimidazole) (PFBI). The polymer showed strong blue emission with high quantum efficiency (0.64) at 450 nm in MeOH and the dramatic quenching effect by Methyl Viologen (MV2+). The fluorescence-quenching effect results from the weak complex formation between an anionic polymer and electron acceptors such as bipyridinium derivatives. The linear Stern-Volmer constant (K-sv) was 3.7x10(5) M-1 for MV2+. The newly synthesized polymer is expected to show the applicability for biological and chemical sensors. (C) 2003 Wiley Periodicals, Inc. [References: 21]
机译:从聚(2,7-(9,9'-二己基芴)-5,5'-联苯并咪唑)(PFBI)设计并合成了一种主链上具有芴基的新型阴离子共轭聚合物。该聚合物在MeOH中在450 nm处显示出强的蓝色发射光,并具有高量子效率(0.64),并受到甲基紫精(MV2 +)的急剧淬灭作用。荧光猝灭效应是由于阴离子聚合物与电子受体(如联吡啶鎓衍生物)之间形成的弱络合物而产生的。 MV2 +的线性Stern-Volmer常数(K-sv)为3.7x10(5)M-1。新合成的聚合物有望在生物和化学传感器中显示出适用性。 (C)2003 Wiley Periodicals,Inc. [参考:21]

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