Abstract
This work presents the development of hybrid nanomaterials (HNMs) composed of spinel metal oxide magnetic nanoparticles (SMON) embedded within a cross-conjugated polymer (PT2U). Experimental evidence shows that the synthesized SMON exhibit crystallinity and chemical properties consistent with magnetite, while PT2U demonstrates photoluminescence in the visible range. Notably, the fluorescence intensity of PT2U increases due to the stacking of its molecules, which triggers an aggregation-induced emission (AIE) phenomenon. The formation of SMON assemblies within PT2U was confirmed, with their size increasing as the SMON/PT2U weight ratio rises. These assemblies modulate the effective magnetic anisotropy of the HNMs, decreasing from 3.44 x 104 to 3.04 x 104 J/m3, and induce fluorescence quenching of PT2U through both dynamic and static mechanisms as the SMON/PT2U weight ratio increases. Furthermore, fluorescence quenching intensifies with the application of a magnetic field, likely due to SMON movement influencing the stacking of PT2U molecules, thereby reducing its AIE.
Published Version
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