Crystal structure, morphological, optical and electrical investigations of Oxypeucedanin micro crystals: an isolated compound from a plant

• DOI: 10.1007/s10854-013-1606-3
• Publication Date: 2013-11-13T05:20:29Z
• Authors: Feroz A. Mir; G. M. Bhat; K. Asokan; K. M. Batoo; Javid A. Banday
• Keywords: 0103 physical sciences; 01 natural sciences; 0104 chemical sciences; 3. Good health

The structural, optical and dielectric properties of micro-crystals of Oxypeucedanin (C16H14O5), isolated from ethyl acetate extract of the roots of the plant Prangos pabularia is presented. These isolated crystals were characterized by using X-ray diffraction (XRD), scanning electron microscopy, optical microscope, ultraviolet (UV)–visible spectroscopy and dielectric spectroscopy techniques. XRD of these crystals confirm that they have monoclinic structure (space group = P21/c). The frequency-dependent real part of the complex ac conductivity was found to follow the universal dielectric response: σac (ω)–ω s . The trend in the variation of the frequency exponent (s) with frequency (ω) supports the fact that correlated barrier hopping is the dominant charge transport mechanism for this compound. From the UV spectroscopy, the optical band gap (E g ) has been found to be around 3.76 eV and is following indirect allowed transition. The observed optical and electric properties predict these crystals as an open choice for modern flexible electronics.