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Nonlinear optical properties of poly‐ortho‐toluidine films implantated by N + ions with different energy
Author(s) -
Shaolin Yan,
Hongcai Wu,
Song Gao
Publication year - 2009
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20718
Subject(s) - materials science , ion , spectroscopy , band gap , analytical chemistry (journal) , oxidizing agent , hydrochloric acid , nuclear chemistry , optoelectronics , organic chemistry , physics , chemistry , metallurgy , quantum mechanics
This article reports experimental work on the effect of N + ion implantation on third‐order nonlinear optical properties of POT films. Using K 2 Cr 2 O 7 as oxidizing agent, poly‐ ortho ‐toluidine (POT) was synthesized in 1 M hydrochloric. The POT films were prepared by spin‐coating method and then implantated by N + ions (15–30 KeV) at a dose 1.9 × 10 16 ions/cm 2 . The films were characterized by FT‐IR spectroscopy, visible spectroscopy and SEM, their third‐order nonlinear optical susceptibility (χ (3) ) were also examined by a degenerate four‐wave mixing (DFWM) system at 532nm. Compared to pristine POT films, the optical band gap obtained from visible spectra decreased from 3.58 to 3.48 eV when the energy was 30 KeV. Also, The χ (3) value of implantated POT films increased from 3.31 × 10 −10 esu to 4.04 × 10 −9 esu when the implantated energy was 25 KeV. POLYM. COMPOS., 2009. © 2008 Society of Plastics Engineers