A tunable ratiometric pH sensor based on phenanthro[9,10-d]imidazole covalently linked with vinylpyridine

被引：17

作者：

Beneto, Arockiam Jesin ^{[1
]}

Thiagarajan, Viruthachalam ^{[2
]}

Siva, Ayyanar ^{[1
]}

机构：

[1] Madurai Kamaraj Univ, Sch Chem, Madurai 21, Tamil Nadu, India

[2] Bharathidasan Univ, Sch Chem, Tiruchirappalli, Tamil Nadu, India

来源：

RSC ADVANCES | 2015年 / 5卷 / 83期

关键词：

DERIVATIVES;

D O I：

10.1039/c5ra09536k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A rational design of the novel phenanthro[9,10-d]imidazole based pH sensing fluorophore PITP was developed, in which phenanthroimidazole acts as a donor and pyridine acts as an acceptor. Various spectral studies confirm that the protonation occurs at two different nitrogen centres, each of which produces an observable color change depending on the pH of the buffer solution. DFT calculations also support the experimental results. We show that PITP can be used as a ratiometric and colorimetric pH sensor in the acidic region.

引用

页码：67849 / 67852

页数：4

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