Structure-property relation and third-order nonlinear optical studies of two new halogenated chalcones


KWONG H. C. , RAKESH M. S. , KUMAR C. S. C. , MAIDUR S. R. , PATIL P. S. , QUAH C. K. , ...Daha Fazla

ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS, cilt.233, ss.349-360, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 233 Konu: 5
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1515/zkri-2017-2098
  • Dergi Adı: ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS
  • Sayfa Sayıları: ss.349-360

Özet

In the present work, the crystal structure and third-order nonlinear optical (NLO) properties of two novel chalcone derivatives namely (E)-3-(4-bromo2-fluorophenyl)-1-(3,4-dimethoxyphenyl)prop-2-en-1-one (I) and (E)-3-(4-bromophenyl)-1-(3,4-dimethoxyphenyl) prop-2-en-1-one (II) are investigated by analyzing the packing pattern, intermolecular interaction, Hirshfeld surface analysis and standard Z-scan technique with continuous wave laser at 532 nm. Both compounds are donor-acceptor-acceptor (D-A-A) type intramolecular charge transferring molecule which crystallized in centrosymmetric space group. The existence of C-H center dot center dot center dot O hydrogen bonds in I and Br center dot center dot center dot O short contact interactions in II play important roles in their packing pattern and NLO properties. The molecules reveal a strong nonlinear refraction (NLR) and nonlinear susceptibility chi((3)) when the donor and acceptor are arranged side-by-side as in compound I. And as the donor and acceptor are aligned on a head-to-head alignment, the molecules divulge a strong third-order nonlinear absorption (NLA) and limiting threshold (LT). The Z-scan results indicate that both compounds would be potential applicants in the development of NLO devices.