Utilization of nata de coco as a matrix for preparation of thin film containing spin crossover iron (II) complexes

Abstract

Spin crosoveriron(II) complexes have potential applications as smart materials since the complexes show reversible transition between diamagnetic low-spin(LS) state and a paramagnetic high spin(HS) state under the application of temperature change, pressure or light irradiation. The complexes generally prepared as a powder compound isolated from direct reaction between aqueous iron(II) solutions with ligand in ethanol or methanol solution. For application as electronic molecular devices, the complex was prepared as a thin film using several matrixes derived from nafion, silica and other synthetic polymer. In this work, natade coco, a natural bacterial cellulose polymer, has been utilized as a matrix for preparation spin crossover triazoleiron(II) complexes. The morphology of the complex and the composition of elements on the surface of natade coco have been explored using SEM-EDX analysis.