Mechanism of Fluorescence Enhancement of Biosynthesized XFe(2)O(4)–BiFeO(3) (X = Cr, Mn, Co, or Ni) Membranes

Ferrites–bismuth ferrite is an intriguing option for medical diagnostic imaging device due to its magnetoelectric and enhanced near-infrared fluorescent properties. However, the embedded XFO nanoparticles are randomly located on the BFO membranes, making implementation in devices difficult. To overc...

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Detalles Bibliográficos
Autores principales: Bian, Liang, Li, Hai-long, Dong, Hai-liang, Dong, Fa-qin, Song, Mian-xin, Wang, Li-sheng, Hou, Wen-ping, Gao, Lei, Zhang, Xiao-yan, Zhou, Tian-liang, Sun, Guang-ai, Li, Xin-xi, Xie, Lei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5143335/
https://www.ncbi.nlm.nih.gov/pubmed/27928781
http://dx.doi.org/10.1186/s11671-016-1747-4
Descripción
Sumario:Ferrites–bismuth ferrite is an intriguing option for medical diagnostic imaging device due to its magnetoelectric and enhanced near-infrared fluorescent properties. However, the embedded XFO nanoparticles are randomly located on the BFO membranes, making implementation in devices difficult. To overcome this, we present a facile bio-approach to produce XFe(2)O(4)–BiFeO(3) (XFO–BFO) (X = Cr, Mn, Co, or Ni) membranes using Shewanella oneidensis MR-1. The perovskite BFO enhances the fluorescence intensity (at 660 and 832 nm) and surface potential difference (−469 ~ 385 meV and −80 ~ 525 meV) of the embedded spinel XFO. This mechanism is attributed to the interfacial coupling of the X–Fe (e(−) or h(+)) and O–O (h(+)) interfaces. Such a system could open up new ideas in the design of environmentally friendly fluorescent membranes.

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