Structural and Electronic Investigations of Prussian Blue Analogue Heterostructures

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Material Information

Title:
Structural and Electronic Investigations of Prussian Blue Analogue Heterostructures Elucidating the Effects of Lattice Coupling on the Structrual Phase Behavior of Cobalt Hexacyanoferrates
Physical Description:
1 online resource (153 p.)
Language:
english
Creator:
Andrus, Matthew John
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Doctorate ( Ph.D.)
Degree Grantor:
University of Florida
Degree Disciplines:
Chemistry
Committee Chair:
TALHAM,DANIEL R
Committee Co-Chair:
BRUCAT,PHILIP J
Committee Members:
CHRISTOU,GEORGE
WEI,WEI
MEISEL,MARK W

Subjects

Subjects / Keywords:
analogue -- blue -- prussian
Chemistry -- Dissertations, Academic -- UF
Genre:
Chemistry thesis, Ph.D.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
Complexes which transition between two states by external stimuli have intrigued scientist for decades. Only over the past twenty years has the charge transfer induced spin transitions (CTIST) phenomenon been reported. Already research on these types of materials, such as Prussian blue analogues (PBA), has been able to manifest themselves in a broad range of fields. Of the materials which exhibit a CTIST, the cobalt hexacyanoferrate (CoFe) PBAs are the most widely studied. Recently multifunctional heterostructures, which pair two or more components together in a single material, have been developed containing CoFe PBAs. Herein, heterostructured materials containing CoFe have been explored to investigate how pairing another material at the interface of a CoFe PBA effects the structural transformations. Heterostructures comprised of either nickel hexacyanochromate or cobalt hexacyanochromate and CoFe PBAs have been investigated and compared to single phase materials. For the purpose of studying the influence the interface coupling bulk and nanosized particles have also been prepared. The results suggest that when the CoFe PBA is the core material, the CTIST is strained when cooled from 300 K to 100 K. Furthermore, when irradiated at 100 K this strain is released. However, when the CoFe PBA is the shell material, the CTIST is strained at the interface, but can this can be overcome this strain when the shell thickness increase. Next, this work also probes the effect of morphology and its influence on the CTIST by comparing hollow and cross-like heterostructures to bulk and nanosized core-shell particles. Then, using nanosized CoFe particles the role of the surface on the phase behavior is investigated and found to mediate these phase transitions. Finally, this work also investigates how infrared spectroscopy can be employed to rapidly characterize heterostructure PBA materials by determining the extinction coefficients of these analogues and applies them to these structures.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Matthew John Andrus.
Thesis:
Thesis (Ph.D.)--University of Florida, 2013.
Local:
Adviser: TALHAM,DANIEL R.
Local:
Co-adviser: BRUCAT,PHILIP J.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2014-12-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2013
System ID:
UFE0046122:00001