Abstract
The heat dissipated during non-radiative deactivation of dyes, embedded in a polymer matrix and excited by a diode laser of 839nm, can significantly increase the film temperature and induce not only physical changes of the film properties but also chemical changes of the composition in the film. Diffuse reflectance spectroscopy (DRS) and atomic force microscopy (AFM) showed that irradiation with IR-light of films containing latex particles and an IR-dye, embedded in a matrix polymer, can lead to the physical coalescence of the latex particles, and substantially decreases the solubility of the film. Laser scanning confocal microscopy (LSCM) analysis of films, containing an IR-dye, an acid generator and an acid sensitive fluorescent probe, and irradiated with an IR diode laser, showed image-wise the infrared light induced fluorescence resulting from the thermally stimulated acid release by the chemical decomposition of the acid generator in the polymer film. The LSCM analysis also nicely showed that the processes in the films, induced by the infrared light irradiation, strongly depend on the nature of the polymer matrix in which the compounds are embedded.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
