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Facile synthesis, x ray single crystal and optical characterizations of Cu-diphenylphosphino-methane organic crystalline semi-conductors

A. F. AL-HOSSAINY1,* , A. IBRAHIM2

Affiliation

  1. Chemistry department, Faculty of Science - New valley, Assiut University, 71516 Assiut, Egypt
  2. Physics department, Faculty of Science, Tanta University, 31527 Tanta, Egypt

Abstract

In this paper, facile synthesis process of a new organic semiconductor single crystals C38H36Cl2N2CuP2 (Cu-dppm) was reported. Single crystal X-ray structure determinations are recorded for cu-dppm (5a) complex, crystallize as poly crystalline form in the monoclinic space group P21/n with a= 9.502(2) Å, b=8.128(3) Å, c=16.112(6) Å. In (Cu-dppm), the N(30)-C(31), C(34)-N(43) and N(43)-C(44) bond lengths could be categorized as one short (1.257 Å) and two long (1.472–1.475 Å) respectively. A short angle (71.7560 ) of P(1)-Cu(17)-P(3) was observed. In addition, because of the growth process, a set of copper complexes were formed. Elemental analysis (EA), IR, 1H-NMR, 31P-NMR spectroscopic data and FAB mass spectra were used for more structural data analysis. The absorbance and transmittance spectra were measured for the obtained (Cu-dppm) organic complex (5a) over the incident photon energy range, 1.55-2.98eV (visible range wavelengths from = 400- 800 nm). The results of the absorptivity (max=729.95 and 349.39 Lmol-1 Cm -1 ) were calculated in order to determine the optical band gap of Cu-dppm (5a) complex at mix (436 and 580nm) respectively. The optical constant, i.e, refractive index of the organic semiconductor (5a) has been calculated as 1.265 at 2.86 eV..

Keywords

C38H36Cl2N2CuP2, IR, 1H-NMR, 31P-NMR spectroscopy, X-ray diffraction, Optical properties.

Submitted at: Sept. 18, 2014
Accepted at: Nov. 13, 2014

Citation

A. F. AL-HOSSAINY, A. IBRAHIM, Facile synthesis, x ray single crystal and optical characterizations of Cu-diphenylphosphino-methane organic crystalline semi-conductors, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 11-12, pp. 1472-1480 (2014)