The novel anthracene decorated dendrimeric cyclophosphazenes for highly selective sensing of 2,4,6-trinitrotoluene (TNT)

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2019-09, Vol.220, p.117115, Article 117115
• Main Authors: Özcan, Emrah, Tümay, Süreyya Oğuz, Keşan, Gürkan, Yeşilot, Serkan, Çoşut, Bünyemin
• Format: Article
• Language: English
• Subjects: Chemosensor; Detection limit; Explosive; Fluorescence; Nitroaromatic; Phosphazenes; TNT
• ISSN: 1386-1425
• DOI: 10.1016/j.saa.2019.05.020

Novel fluorescent anthracene-decorated cyclotri- and cyclotetraphosphazenes (5 and 6) are designed and synthesized, and their chemosensor behaviors against nitroaromatic compounds are examined by UV/Vis and fluorescence spectroscopies for addressing the sensors with cyclophosphazenes for 2,4,6-trinitrotoluene detection. The fluorescence intensities of (5 and 6) are found to be selectively quenched by only 2,4,6-trinitrotoluene through the non-covalent π⋯π stacking interactions between anthracene-substituted cyclophosphazenes and 2,4,6-trinitrotoluene. In addition, cyclic voltammetry and theoretical calculation of novel sensor systems are studied. The proposed fluorescent sensor systems are critical in terms of practical detection of 2,4,6-trinitrotoluene. [Display omitted] •A new type of fluorescent chemosensors based on anthracene-decorated cyclotri- and cyclotetraphosphazenes have been synthesized.•The photophysical properties of the compounds have been studied in THF•The Fluorescence Sensing properties of the compounds have been studied in THF•Very selective and sensitive fluorescence sensors for detection of TNT have been obtained.