Improved colorimetric dual-emission and endued piezofluorochromism by inserting a phenyl between 9-anthryl and terpyridine
Improved colorimetric dual-emission and endued piezofluorochromism by inserting a phenyl between 9-anthryl and terpyridine
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DOI：
10.1016/j.dyepig.2016.01.019
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发表时间：
2016-05
影响因子：
4.5
通讯作者：
Q. Sun;W. Liu;W. Shang;Haichang Zhang;S. Xue;Wenjun Yang
中科院分区：
文献类型：
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作者：
Q. Sun;W. Liu;W. Shang;Haichang Zhang;S. Xue;Wenjun Yang
三齿三联吡啶是一种功能性构筑单元，9-蒽基三联吡啶已被用作镉（II）的比率荧光传感器和焦磷酸盐检测的次级传感器。在9-蒽基和三联吡啶之间插入苯基单元，合成了一种新的三联吡啶衍生物4-（9-蒽基）苯基三联吡啶（ATP），研究了结构变化对光学性质的影响。结果表明，ATP不仅保持了对Cd ~（2+）的选择性荧光比色传感作用，而且ATP和ATP-Cd（II）复合物的两个荧光带间距可显著增大至185 nm。与9-蒽基三联吡啶-Cd（II）络合物不同，ATP-Cd（II）络合物能被大多数多价阴离子分解。此外，苯环的插入可以使ATP-Cd（II）配合物显着的压电荧光与研磨诱导的光谱位移为54 nm。X射线衍射和差示扫描量热法实验证实，在外部刺激下，结晶和非晶态之间的相变是可逆PFC行为的原因。
Tridentate terpyridine is a functional building unit, and 9-anthylterpyridine has been used as ratiometric fluorescent sensor for Cd(II) and secondary sensor for pyrophosphate detection. Here we have inserted a phenyl unit between 9-anthryl and terpyridine to synthesize a new terpyridine derivative, 4-(9-anthryl)phenyl terpyridine (ATP) to investigate the effect of structure change on optical properties. The results show that ATP not only remains the selectively colorimetric fluorescence sensing to Cd2+but also the interval of two emission bands from ATP and ATP–Cd(II) complex can be enlarged significantly to 185 nm. Unlike 9-anthylterpyridine–Cd(II) complex, ATP–Cd(II) complex could be decomplexed by most polyvalent anions. Moreover, the insertion of a phenyl ring can render ATP–Cd(II) complex remarkable piezofluorochromism with grinding-induced spectral shift of 54 nm. X-ray diffraction and differential scanning calorimetry experiments confirm the phase transformation between crystalline and amorphous states upon external stimuli is responsible for reversible PFC behavior.