Facile fabrication of a cost-effective, water-soluble, and electrosynthesized poly(9-aminofluorene) fluorescent sensor for the selective and sensitive detection of Fe(III) and inorganic phosphates
Facile fabrication of a cost-effective, water-soluble, and electrosynthesized poly(9-aminofluorene) fluorescent sensor for the selective and sensitive detection of Fe(III) and inorganic phosphates
复制标题
轻松制造经济高效的水溶性电合成聚（9-氨基芴）荧光传感器，用于选择性、灵敏地检测 Fe(III) 和无机磷酸盐
DOI：
10.1016/j.snb.2012.05.072
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发表时间：
2012-08-01
影响因子：
8.4
通讯作者：
Xu, Jingkun
中科院分区：
文献类型：
--
作者：
Zhang, Ge;Lu, Baoyang;Xu, Jingkun
以市产单体9-氨基芴为原料，在三氟化硼醚二乙酯中直接电聚合制备了水溶性聚（9-氨基芴）（P9AF），并初步研究了其作为荧光化学传感器在有机缓冲液2-[4-（2-羟乙基）-1-哌嗪基]乙磺酸（HEPES） （pH 7.0）中高选择性、高灵敏度检测Fe（III）和无机磷酸盐（Pi）的应用。一步电合成的高质量、水溶性的P9AF具有良好的荧光性能。采用P9AF检测水溶液中的Fe(III)，具有选择性高、灵敏度高、检出限低、响应快等特点。在与Fe（III）结合时，P9AF发生了异常的荧光猝灭，荧光强度降低了约94%。P9AF-Fe（III）配合物对Pi具有高灵敏度和快速响应。通过透射电镜对其工作机理进行了分析和验证。研究了实际样品中Fe（III）的测定以及P9AF与活细胞中Fe（III）和Pi的相互作用，结果令人满意，表明性价比高、水溶性好、电合成的P9AF在生物系统和环境中具有潜在的应用前景。(C) 2012 Elsevier B.V.版权所有
Water-soluble poly(9-aminofluorene) (P9AF) was facilely synthesized by the direct electropolymerization of commercially available monomer 9-aminofluorene in boron trifluoride diethyl etherate, and its preliminary application as a fluorescent chemosensor for the highly selective and sensitive detection of Fe(III) and inorganic phosphates (Pi) in an organic buffer 2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulfonic acid (HEPES) (pH 7.0) was investigated. The one-step electrosynthesized P9AF with high quality and water-solubility possessed good fluorescence properties. P9AF was employed to sense Fe(III) in aqueous solution, displaying high selectivity, pronounced sensitivity, low detection limit, and fast response. On binding to Fe(III), exceptional fluorescence quenching of P9AF occurred, demonstrated by a >94% reduction in the fluorescence intensity. P9AF-Fe(III) complex exhibited high sensitivity and rapid response to Pi with turn-on fluorescence. The working mechanism was proposed and confirmed by transmission electron microscopy. The determination of Fe(III) in real samples and the interaction of P9AF with Fe(III) and Pi in living cells were investigated with satisfying results, showing that the cost-effective, water-soluble, and electrosynthesized P9AF has potential application in biological system and environment. (C) 2012 Elsevier B.V. All rights reserved.