Benzo[ghi]perylene and coronene: ratiometric fluorescent probes for the sensing of microenvironment changes and micelle formation in aqueous medium†,New Journal of Chemistry

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Benzo[ghi]perylene and coronene: ratiometric fluorescent probes for the sensing of microenvironment changes and micelle formation in aqueous medium†
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-03-21 00:00:00 , DOI: 10.1039/c8nj00739j
Ejaz Hussain _{1,

2,

3,

4,

5} , Zhenzhen Hu _{1,

2,

3,

4,

5} , Huipeng Zhou _{1,

2,

3,

4,

5} , Chunhua He _{1,

2,

3,

4,

5} , Sohail Anjum Shahzad _{1,

2,

3,

4,

5} , Cong Yu _{1,

2,

3,

4,

5}

Affiliation

Benzo[ghi]perylene and coronene were used as ratiometric fluorescent probes to monitor microenvironment changes and monomer-micelle transition for the first time. The perturbations in vibronic bands in the emission spectra of probes displayed microenvironment sensing behavior in various solvents and surfactants. The monomer–micelle transitions of anionic, cationic and neutral surfactants were monitored by changes in the ratios of vibronic band intensities. Clear CMC values were obtained, which is an advantage over the conventional probes such as pyrene with clear CMC values sometimes difficult to obtain due to less steep changes of S-shaped plots. They revealed a redshift in emission which offers a good substitute in situations where the fluorescence of pyrene and the background fluorescence of the assay mixture interfere with each other. BzP exhibited reverse behavior in the perturbations of vibronic band intensities in anionic SDS and SLS relative to cationic and non-ionic surfactants, which was not observed when pyrene was used. In addition, the vibronic band ratios of BzP are thermally more stable than those of pyrene, which is advantageous since strict assay temperature control may not be necessary. These probes are thus helpful for various applications in the areas of sensing and interface science.

中文翻译：

苯并[ g ] per和co苯：用于检测水性介质中微环境变化和胶束形成的比率荧光探针†

本佐吉per和co苯用作比例荧光探针，首次监测微环境变化和单体胶束转变。探针发射光谱中振动带的扰动显示了在各种溶剂和表面活性剂中的微环境传感行为。阴离子，阳离子和中性表面活性剂的单体-胶束转变通过振动带强度比的变化进行监测。获得了清晰的CMC值，这是优于常规探针（例如pyr）的优势，由于S形图的陡峭变化较小，有时难以获得清晰的CMC值。他们揭示了发射的红移，在pyr的荧光和化验混合物的背景荧光相互干扰的情况下提供了很好的替代品。相对于阳离子和非离子表面活性剂，BzP在阴离子SDS和SLS的振动带强度扰动中表现出相反的行为，这在使用pyr时未观察到。另外，与z相比，BzP的电子能带比在热上更稳定，这是有利的，因为可能不需要严格的测定温度控制。因此，这些探针对于传感和界面科学领域的各种应用很有帮助。

更新日期：2018-03-21

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