Tag Archives: Rhodamine 6G

Optical Properties of Composite Resol Novolac Resin (Rnr) Doped With Rhodamine 6g (Published)

Optical characteristics of Resol Novolac Resin (RNR) films doped with different ratios of Rhodamine 6G (0.01,0.03, 0.05, 0.05, 0.07, 0.1)% wt. were studied. The composite films prepared using casting technique, the optical absorption spectra of these films in the wavelength range from 200-800 nm. The result showed that the optical absorption is due to direct allowed transitions for pure RNR and different doping ratios, while the Energy gap Eg of the composite films decreases with increasing doping ratios. The absorption coefficient (a), real and imaginary parts (ɛri), and optical conductivity (σopt) were found to be increased with increasing the doping ratios.                                                                                                                    

Keywords: Optical Properties, Resol Novolac Resin, Rhodamine 6G, doping effect

Effect of Doping Ratios on Dielectric Properties of Resol Novolac Resin (RNR) With Rhodamine 6g (Published)

Dielectric properties and ac conductivity measurements on Resol Novolac Resin (RNR) doped with (0.01, 0.03, 0.05, 0.07, 0.1)% wt of Rhodamine 6G have been studied.The measurements were carried out in the frequency range (100Hz-1MHz) and temperature in the range (30-100) ˚C and. The experimental results showed that ε′, ε̋ and tanδ increased with increasing temperature, and is due to greater freedom of movement of the dipole molecular chains within polymer at high temperature. The value of ε′ decreased with increasing frequency, which indicates that the major contribution to the polarization comes from orientation polarization. Ac. Conductivity σac and impedance (Z) of doping polymer behaviors as function of frequency and temperature have also been investigated.                                                                         

Keywords: Dielectric properties, Resol Novolac Resin, Rhodamine 6G, ac conductivity.

Optical Properties of Composite Resol Novolac Resin (RNR) Doped with Rhodamine 6g (Published)

Optical characteristics of Resol Novolac Resin (RNR) films doped with different ratios of Rhodamine 6G (0.01,0.03, 0.05, 0.05, 0.07, 0.1)% wt. were studied. The composite films prepared using casting technique, the optical absorption spectra of these films in the wavelength range from 200-800 nm. The result showed that the optical absorption is due to direct allowed transitions for pure RNR and different doping ratios, while the Energy gap Eg of the composite films decreases with increasing doping ratios. The absorption coefficient (a), real and imaginary parts (ɛri), and optical conductivity (σopt) were found to be increased with increasing the doping ratios.                                                                                                                   

Keywords: Optical Properties, Resol Novolac Resin, Rhodamine 6G, doping effect