Electrospun 2-Nitroaniline (2NA) - Poly (methylmethacrylate) (PMMA) nanofibers for power limiting and Q-switching applications

Intensity dependent nonlinear absorption transition is observed in novel 2-Nitroaniline - Poly (methylmethacrylate) electrospun nanofibers. Decrease in the nonlinear absorption coefficient and switch over in the sign of nonlinear absorption coefficient shows the strengthening of saturable absorption and weakening of two photon absorption with rise in excitation intensity. Emission studies indicate that addition of PMMA in the organic 2NA has altered the band structure and shows a strong green and red emission peaks. With the observed energy states, possible transition responsible for sequential two photon absorption is explained. 2NA-PMMA nanofiber will suitable for optical switching and power limiting devices.

Automated summary

The novel 2-Nitroaniline - Poly (methylmethacrylate) electrospun nanofibers exhibit intensity dependent nonlinear absorption transition, with a decrease in the nonlinear absorption coefficient and switch over in the sign indicating a strengthening of saturable absorption and weakening of two photon absorption. The addition of PMMA alters the band structure and leads to strong green and red emission peaks, with potential application in optical switching and power limiting devices.