• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Highly emissive, naked-eye solvatochromic probe based on styryl tetrahydrodibenzo[a,i]phenanthridine for acidochromic applications
【24h】

Highly emissive, naked-eye solvatochromic probe based on styryl tetrahydrodibenzo[a,i]phenanthridine for acidochromic applications

机译：基于STYRYL四氢二苯甲苯的高发光，裸眼溶色溶解探针[A，I]苯吖啶用于抗性化学应用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new series of 5-styryl tetrahydrodibenzo[ a , i ]phenanthridines was readily synthesized from β-tetralone, ammonium acetate and cinnamaldehydes. These dyes emitted light with large Stokes shift values of 3894–7265 cm ~(?1) , depending on the nature of the substituent. The dyes displayed positive solvatochromism in their emission spectra, suggestive of a more polar excited state. Dye 3c exhibited aggregation-induced emission (AIE) property in 10% THF–water mixture besides a ratiometric response to pH from 10.75 to 2.16 with blue shift of 84 nm in emission. The emission ratio ( I _(526) ?:? I _(442) ) further displayed a good linearity with pH in the range of 4.1 to 6.8 and the corresponding p K _(a) value was found to be 4.55 ± 0.03. The addition of TFA led to a prominent bathochromic shift in spectra along with clear colour changes owing to protonation at the phenanthridine segment. Further, a second protonation of the phenanthrinium segment could take place based on the p K _(a) strength of the acid added. The pH dependent spectral changes were successfully applied to quantitatively detect pH in biological fluids and acid impurities in solvents.
机译：一种新的5-styryl四氢二苯并苯并[a，i]菲利番素易于从β-tetralone，醋酸铵和肉桂醛合成。根据取代基的性质，这些染料具有3894-7265cm〜（α1）的大小换档值。染料在其发射光谱中显示出阳性溶性溶解度，提示更极地激发态。除了对10％的THF-水混合物中，染料3C在10％THF-水混合物中表现出聚集诱导的发射（AIE）性能，除了10.75至2.16，发射中的84nm的蓝色移位。发射比（I _（526）？：ΔI_（442））进一步展示了4.1至6.8的pH的良好线性，并且发现相应的Pκ（a）值为4.55±0.03。 TFA的添加导致光谱中的突出的碱基转变，并且由于菲素段的质子化而显然的颜色变化。此外，菲蒽段的第二质子化可以基于添加的酸的Pκ_（a）强度进行。成功地应用pH依赖性光谱变化以在溶剂中定量地检测在生物流体和酸杂质中的pH。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号