% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@PHDTHESIS{Cojocariu:941219,
author = {Cojocariu, Iulia},
title = {{A}ctivating molecular magnetism by controlled on-surface
coordination},
volume = {91},
school = {Uni Duisburg-Essen},
type = {Dissertation},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2023-00823},
isbn = {978-3-95806-674-8},
series = {Schriften des Forschungszentrums Jülich Reihe Information
/ Information},
pages = {xi, 169},
year = {2022},
note = {Dissertation, Uni Duisburg-Essen, 2022},
abstract = {The enduring interest in the study of metallorganic
complexes emerges from the demonstrated multi-faced
applications, which range from gas sensing to memory
storage, and heterogeneous catalysis, as well as
single-molecule magnets. The fundamental properties required
for the molecule to achieve these functions can already be
intrinsically present in the molecule itself, or its
functionalization can be exploited to meet the desired
requirements. In this regard, on-surface molecular
functionalization serves as a mechanism to stabilize the
chelated metal ions in catalytically and magnetically active
states. The importance of the present thesis results from
the investigation of the factors guiding magnetism and
catalytic activity at the organic-metal interface, where the
organic molecule is chosen to be a transition metal
porphyrin or phthalocyanine.The first well-known factor
influencing the properties of the overlayer is the surface.
The cruciality of the substrate choice will be demonstrated
by combining different embedded transition metal ions,
characterized by a different electronic configuration, and
several metal surfaces,i.e. gold, silver, and copper,
possessing an increasing surface reactivity. By exposing
various interfaces to an external ligand, nitrogen dioxide,
it is demonstrated that only the interface formed with
copper retains the necessary properties for further
manipulating electronic andmagnetic properties of the metal
core through axial ligand interaction. Another important
factor identified in the view of organic interface
functionalization is the modification of molecular periphery
and structure. An example of this is the introduction of
strongly electron withdrawing groups in the metal
phthalocyanine, and the possibility of realizing
well-defined heterostacked p-n junctions is demonstrated. A
distinct established approach for structural modification is
found in molecular planarization induced by an on-surface
temperature-induced cyclodehydrogenation reaction. This
transformation allows us to define the indispensability of
molecular flexibility for employing these interfaces as NO2
sensors. However, in the case of metal phthalocyanines,
which are planar in their pristine form, it is shown that
although there is no interaction with the
undissociateddioxide, the molecule-substrate interface is
active in NO2 cleavage and the stabilization of different
magnetic states is still achievable.},
cin = {PGI-6},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {5211 - Topological Matter (POF4-521)},
pid = {G:(DE-HGF)POF4-5211},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/941219},
}