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

摘要

Spin crosover iron(H) 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, nata de coco, a natural bacterial cellulose polymer, has been utilized as a matrix for preparation spin crossover triazole iron(II) complexes. The morphology of the complex and the composition of elements on the surface of nata de coco have been explored using SEM-EDX analysis.