Extended iron phthalocyanine islands self-assembled on a Ge(001):H surface.

Beilstein J Nanotechnol

Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Łojasiewicza 11, PL 30-348 Kraków, Poland.

Published: March 2021

Self-assembly of iron(II) phthalocyanine (FePc) molecules on a Ge(001):H surface results in monolayer islands extending over hundreds of nanometers and comprising upright-oriented entities. Scanning tunneling spectroscopy reveals a transport gap of 2.70 eV in agreement with other reports regarding isolated FePc molecules. Detailed analysis of single FePc molecules trapped at surface defects indicates that the molecules stay intact upon adsorption and can be manipulated away from surface defects onto a perfectly hydrogenated surface. This allows for their isolation from the germanium surface.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7940817PMC
http://dx.doi.org/10.3762/bjnano.12.19DOI Listing

Publication Analysis

Top Keywords

fepc molecules
12
ge001h surface
8
surface defects
8
surface
6
extended iron
4
iron phthalocyanine
4
phthalocyanine islands
4
islands self-assembled
4
self-assembled ge001h
4
surface self-assembly
4

Similar Publications

Article Synopsis
  • Control of individual atomic spins is essential for advancements in spintronics, quantum sensing, and quantum information processing, with scanning tunneling microscopy (STM) being a effective tool for manipulation.
  • The research presents a new method for self-assembling magnetic organometallic complexes using iron atoms and specific molecules (Cu(dbm) and FePc) on a silver substrate, effectively forming complexes that mimic metallocenes.
  • Magnetic properties of these complexes show a notable Kondo effect, which is explained through density functional theory calculations indicating that the interaction between Fe 3d-orbitals and benzene π-orbitals enhances Kondo screening, offering insights for designing hybrid organometallic systems.
View Article and Find Full Text PDF

Carbon Nanotube-Based Chemiresistive Sensor Array for Dissolved Gases.

ACS Omega

November 2024

Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4M1, Canada.

Dissolved gases such as oxygen (DO) and ammonia (dNH) are among the most consequential parameters for the assessment of water quality. Since the concentrations of DO and dNH are interdependent through the nitrogen cycle, simultaneous monitoring can be useful in many applications. For example, in wastewater treatment, aeration baths are used to adjust the rate of removal of ammonia by the bioactive sludge.

View Article and Find Full Text PDF

M-N-C catalysts with nitrogen-coordinated metal single-atom active sites have demonstrated high activity for hydrogen storage materials, but their stability in this application remains uncertain. This study addresses this issue by using nickel phthalocyanine (NiPc) molecules on MgH₂ particles as a model system. It is found that the N-coordinated high-valence Ni single atoms in the NiN₄ active site are unstable in the reducing environment of hydrogen storage, spontaneously evolving into zero-valence Ni, forming a Ni₁-Mg single-atom alloy (SAA).

View Article and Find Full Text PDF

Exploration of nanocomposites with exceptional catalytic activities is essential for harnessing the unique advantages of each constituent in the domains of pharmaceutical analysis and electrochemical sensing. In this regard, we illustrated the synthesis of iron oxide/N-doped reduced graphene oxide (FeO/N-rGO) nanocomposites through a one-step thermal treatment of iron phthalocyanine (FePc), melamine, and graphene oxide for electrochemical sensing. The large specific surface area and good conductivity of N-rGO can efficiently capture rutin molecules and accelerate electron transport, thereby improving the electrochemical performance.

View Article and Find Full Text PDF

Hierarchical Nanostructures of Iron Phthalocyanine Nanowires Coated on Nickel Foam as Catalysts for the Oxygen Evolution Reaction.

Molecules

September 2024

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China.

In this paper, iron phthalocyanine nanowires on a nickel foam (FePc@NF) composite catalyst were prepared by a facile solvothermal approach. The catalyst showed good electrochemical oxygen evolution performance. In 1.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!