Phromyothin, Darinee

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Phromyothin, Darinee
Alternative Name
Phromyothin, D.
Phromyothin, Darinee Sae Tang
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Email
darinee.ph@kmitl.ac.th

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    Item type:Publication,
    A study and characterization of photophysical properties of fluorene derivative thin flim
    (2016-01-01)
    Sirijarutus, Wattanaruk
    ;
    Charoensuwan, Sittan
    ;
    Thanakit, Prawonwan
    ;
    Pratontep, Sirapat
    ;
    Phromyothin, Darinee Sae Tang
    An emissive layer, fluorene derivative, was performed for organic light-emitting device properties. The preparation of fluorene derivative thin film by spin coating and convective technique was studied the band diagram of thin films which its properties out as the energy gap (Eg). UV-Visible spectrophotometer has been used to investigate the thin film properties. The results indicate spectacular property which occurs in the optical properties, fluorescence in thin film and luminescence as a green light in device that it could be applied as emissive layer for organic light-emitting diodes (OLEDs) due to the appropriate work function with cathode and anode, aluminum metal and indium tin oxide layer (ITO), respectively.
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    The study of metal binding properties and electronic transitions of dithienopyrole derivatives
    (2017-01-01)
    Thanakit, Prawonwan
    ;
    Suramitr, Songwut
    ;
    Phromyothin, Darinee
    Fluorescence chromophore (L) based on dithienopyrole derivatives (DPT) have been compared the binding site for detecting metal ions. There are consisting of methacryloyl amine (L1) and cyanoacrylic acid (L2) acceptor, respectively. Corresponding molecular geometries, orbital energies, electron contributions and absorption properties of the fluorescence sensor were investigated by using density functional theory (DFT) with B3LYP method of calculation. The DFT based studies with various solvation and absorption spectra were performed using time-dependent density functional theory (TD-DFT) with the polarized continuum model. Comparing with L2, the experimental L1 shows a red shift both absorption and emission spectra at 350 and 485 nm, respectively. The solvent environment exhibited slight shift in experimental and calculated absorption. An effect of various metal ions on absorption behavior was studied. Results indicate that the L1 and L2 exhibit excellent sensitivity for Pb<sup>2+</sup> ion. The binding complex M-L1 and M-L2 (M: Cd, Cu, Hg, Pb, Zn) exhibited Pb<Cu<Zn<Mn<Cd<Hg.
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    Detection of Zinc Ions Using a Fluorescent Compound Derived from a Cyanoacrylic Acid-based Chemosensor
    (2025-01-01)
    Thanakit, Prawonwan
    ;
    Puengvigrai, Supakorn
    ;
    Khummung, Teeranuch
    ;
    Suramitr, Songwut
    ;
    Trachu, Koson
    This study was initially conducted through the synthesis and characterization of a cyanoacrylic acid based on thiophene-phenylethyl-cyanoacrylic acid (TPC). The receptor cyanoacrylic acid derivative revealed an “off-on” mode with high selectivity and sensitivity to Zn2+ ions, whereas the selectivity of the optical sensor for Zn2+ ions was the consequence of chelation-enhanced fluorescence. The possible interference of other metal ions in solution was examined in the presence of different types of metal ion, whereby the results showed high selectivity and sensitivity with a low detection limit of 7.78 × 10-8 M. Furthermore, the geometry of the TPC molecular structure and electronic properties were examined using density functional theory and time-dependent density functional theory. A comparison between calculation and experimental data yielded results indicating that the compound has potential applications in chemosensors.