Two novel CN turn on fluorescent imaging materials with twin binding groups

Two novel CN turn on fluorescent imaging materials with twin binding groups
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两种新型 CN 开启具有双结合基团的荧光成像材料

DOI:
10.1016/j.snb.2016.08.051
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发表时间:
2017-02
期刊:
Sensors and Actuators B: Chemical
影响因子:
--
通讯作者:
Caixia Yin
Caixia Yin
中科院分区:
其他
文献类型:
--
作者:
Fangjun Huo;Jianfang Li;Fangqin Chen;Caixia Yin

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在这项工作中,我们合成了两种新型的具有双结合基团的CN单键荧光成像材料(1和2),并用标准的分析工具和光谱技术进行了充分的表征。考察了1和2在水溶液中的选择性,以及由此产生的对不同阴离子间CN单键的开启荧光响应。用核磁共振和质谱仪对氰离子加合物进行了表征,进一步证实了检测机理是通过CN单键对探针中的吲哚基团进行亲核攻击,从而引起荧光的开启变化。核磁共振和质谱图表明,在电离过程中,吲哚基团上CN型单键的亲核加成是可逆的。对于传感器的实际应用,1可用于生物应用中CN单键的荧光显微成像。
In this work two novel fluorescent imaging materials for CNsingle bond with twin binding groups (1and2) have been synthesized and fully characterized by standard analytical tools and spectroscopic techniques. The selectivity of1and2has been explored in aqueous solution, and the resulting turn-on fluorescence response toward CNsingle bond among different anions was studied. The cyanide ion adduct was characterized using NMR and mass spectroscopy and detection mechanism was further confirmed to be the nucleophilic attack of the indolium group of probe by CNsingle bond, which induces a turn-on fluorescence change. NMR and mass spectra indicate nucleophilic addition of CNsingle bond to indolium group is reversible in ionization process. For the practical application of the sensors,1could be used for fluorescence-microscopic imaging of CNsingle bond in biological applications.
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