Synthesis Of HPTS Intercalated LDH And Studies Of Its Luminescent Properties

In this thesis, the fabrication of 8-hydroxypyrene-1,3,6-trisulfonic anion (HPTS) and octanesulfonate (OS) anion co-intercalated Zn-Al layered double hydroxide (LDH) by hydrothermal technique has been carried out; and the intercalated impact of fluorescence has been studied. The preparation of HPTS-OS/LDH film obtained by solvent evaporation method opens avenues for their applications in the field of photoluminescent materials and sensors.The HPTS and OS co-intercalated Zn-Al LDH composites were prepared by hydrothermal method. The XRD patterns suggest HPTS and OS have been intercalated successful. In the photoluminescence spectra HPTS(2%)-OS/LDH composite has a strongest emission intensity intimate octanesulfonate anion prevents quenching of HPTS efficiently and improve the fluorescence efficiency greatly. As the confinement effect on the included guest, the excited-state proton transfer has been restrained, and the blue fluorescence show a higher intensity than the green fluorescence. The intercalated fluorescence molecules are shielded by the LDH host layer from many quenching cation. In the aqueous environment, Cu2+ can quench the florescence of HPTS efficiently but the complex material has a stable emission even in the high Cu2+ concentration.Furthermore the application of HPTS-OS/LDH film in the field of photochemical has been investigated. The HPTS-OS/LDH film prepared by solvent evaporation method possesses a linear response, excellent stability and fast response time for measure pH value. The compound material exhibit potential application in the field of optical sensors.