Electronic transport properties of spin-crossover polymer plus polyaniline composites with Fe3O4 nanoparticles

被引：2

作者：

Mishra, Esha ^{[1
,2
]}

Chin, Waikiat ^{[1
]}

Mcelveen, Kayleigh A. ^{[3
]}

Ekanayaka, Thilini K. ^{[1
]}

Zaz, M. Zaid ^{[1
]}

Viswan, Gauthami ^{[1
]}

Zielinski, Ruthi ^{[1
]}

N'Diaye, Alpha T. ^{[4
]}

Shapiro, David ^{[4
]}

Lai, Rebecca Y. ^{[3
]}

Streubel, Robert ^{[1
,5
]}

Dowben, Peter A. ^{[1
]}

机构：

[1] Univ Nebraska Lincoln, Dept Phys & Astron, Lincoln, NE 68588 USA

[2] Berry Coll, Dept Phys, Mt Berry, GA 30149 USA

[3] Univ Nebraska Lincoln, Dept Chem, Lincoln, NE 68588 USA

[4] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[5] Univ Nebraska Lincoln, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

JOURNAL OF PHYSICS-MATERIALS | 2024年 / 7卷 / 01期

基金：

美国国家科学基金会;

关键词：

molecular electronics; spin-crossover; electric conductivity; phase separation; magnetic nanoparticles; CHARGE-TRANSPORT; STATE; TRANSITION;

D O I：

10.1088/2515-7639/ad1b35

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Adding Fe3O4 nanoparticles to composites of [Fe(Htrz)(2)(trz)](BF4) spin-crossover polymer and polyaniline (PANI) drives a phase separation of both and restores the molecular structure and cooperative effects of the spin-crossover polymer without compromising the increased conductivity gained through the addition of PANI. We observe an increased on-off ratio for the DC conductivity owing to an enlarged off state resistivity and a 20 times larger AC conductivity of the on state compared with DC values. The Fe3O4 nanoparticles, primarily confined to the [Fe(Htrz)(2)(trz)](BF4) phase, are ferromagnetically coupled to the local moment of the spin-crossover molecule suggesting the existence of an exchange interaction between both components.

引用

页数：9

共 45 条

[1] Pulsed laser photolysis and thermodynamics studies of intramolecular electron transfer in valence tautomeric cobalt o-quinone complexes [J].