Spectrophotometric and electrical properties of imperatorin: an organic molecule

• Published in: Applied physics. A, Materials science & processing Vol. 120; no. 4; pp. 1659 - 1663
• Main Author: Mir, Feroz A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2015
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Conductivity; Electrical properties; Ethyl acetate; Extraction plants; Hopping (conductivity); Machines; Manufacturing; Materials science; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Power plants; Processes; Resistivity; Surfaces and Interfaces; Thin Films; Lower Unoccupied Molecular Orbital; Dielectric Loss; Ethyl Acetate Extract; Coumarin; High Occupied Molecular Orbit
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-015-9384-9

Imperatorin (molecular formula = C 16 H 14 O 4, molecular mass = 270) an organic molecule was isolated from ethyl acetate extract of the root parts of the plant Prangos pabularia . The optical study was carried out by ultraviolet–visible spectroscopy, and this compound showed an indirect allowed transition. The optical band gap ( E g ) was found around 3.75 eV. Photoluminescence shows various good emission bands. The frequency-dependent real part of the complex ac conductivity was found to follow the universal dielectric response: σ ac ( ω ) α ω s [where σ ac ( ω ) is the frequency-dependent total conductivity, ω is the frequency, and s is the frequency exponent]. From ac conductivity data analysis, correlated barrier hopping charge-transport mechanism is the dominant electrical transport process shown by this compound. The good emission, less absorption, wide band gap and good electrical properties shown by this compound project them as a bright choice for organic electronic devices.