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

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.