Abstract:

A new donor-acceptor(D-A) pyrene-containing naphthalene derivative 2-(pyrene-1-yl)-1,8-naphthyl was synthesized and characterized by nuclear magnetic resonance spectrometry(¹H NMR, ¹³C NMR), Fourier transform infrared spectrometry(FTIR) and liquid chromatography-mass spectrometry(LC-MS). The linear optical properties and third-order nonlinear optical absorption of 2-(pyrene-1-yl)-1,8-naphthyridine(PN) were studied by means of the electron spectroscopy and Z-scan technique, respectively. The thermal stability of PN was determined by thermogravimetry and differential scanning calorimetry. The experimental results show that the nonlinear absorption coefficient of PN at 532 nm and 180 fs is β=9.0×10^-14 m/W, exhibiting ultrafast third-order nonlinear optical response. The molecular orbital energy, polarizability and hyperpolarizability were calculated by density functional theory, and the results show that electron transfer can take place within the molecule. There is no absorbance at more than 450 nm in ultraviolet spectrum of PN. So it is a candidate material for the next in nonlinear optical absorption, laser protection, absorption optical switch or bistable devices.

Key words: pyrene-containing naphthalene derivative, Z-scan technique, theoretical calculation, ultrafast third-order nonlinear optical properties