Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formation
Abstract: Polymer pyrolysis has emerged as a versatile method to synthesize graphenoid (graphene like) materials with varying thickness and properties. The morphology of the thin film, especially the thickness, greatly affects the graphitizability and the properties of the graphenoid material. Using in situ current annealing inside a transmission electron microscope (TEM), the thickness‐dependent structural evolution of the polymer film with a special focus on thickness effects is followed. At high temperatures, thin samples form large graphene layers oriented parallel to the substrate, whereas in thick samples multi‐walled cage‐like structures are formed. Moleclar Dynamics (MD) simulations reveal a film thickness of 40 Å below which, the carbonized layers align parallel to the surface. For thicker samples, the orientation of the layers becomes increasingly misoriented starting from the surface to the center. This structural change can be attributed to the formation of bonded multi‐layers from the initially unsaturated activated edges. The resulting cage‐like structures are stable even during simulated annealing at temperatures as high as 3500 K. An atomistic understanding of the formation of these structures is presented. The results clearly indicate the critical effect of thickness on the graphitizability of polymers and provide a new understanding of the structural evolution during pyrolysis.
- Location
-
Deutsche Nationalbibliothek Frankfurt am Main
- Extent
-
Online-Ressource
- Language
-
Englisch
- Bibliographic citation
-
Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formation ; day:23 ; month:08 ; year:2023 ; extent:11
Macromolecular materials and engineering ; (23.08.2023) (gesamt 11)
- DOI
-
10.1002/mame.202300230
- URN
-
urn:nbn:de:101:1-2023082415220566967703
- Rights
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
-
14.08.2025, 11:00 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Other Objects (12)
TEM Investigations of Deformation Mechanisms in Nanocrystalline Metals and Multilayered Composites
In situ TEM studies on the graphitization and growth of nanocrystalline graphene from polymers
Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formation
Mechanical Properties and Thermal Stability of Nanocrystalline High-entropy Alloys
Evolution of Glassy Carbon Microstructure: In Situ Transmission Electron Microscopy of the Pyrolysis Process
Electron Tomography for 3D imaging of Nanoscale Materials
In Situ Transmission Electron Microscopy Investigation of All Solid-state Sodium Batteries
Unveiling Electronic Structure Evolution in Complex Oxides: Tuning Charge, Spin and Structural Order
Tailoring Properties of Printed Field-Effect Transistors by Design and Material Changes
Design and Atomic Scale Characterization of Complex Oxide Interfaces
Understanding fundamental migration processes during battery cycling and material synthesis using advanced transmission electron microscopy methods
An Electron Microscopy Study on the Prevention of SiC-Fiber Decomposition via the Integration of a Buffer Layer into ZrB₂-based Ceramics
TEM Investigations of Deformation Mechanisms in Nanocrystalline Metals and Multilayered Composites
In situ TEM studies on the graphitization and growth of nanocrystalline graphene from polymers
Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formation
Mechanical Properties and Thermal Stability of Nanocrystalline High-entropy Alloys
Evolution of Glassy Carbon Microstructure: In Situ Transmission Electron Microscopy of the Pyrolysis Process
Electron Tomography for 3D imaging of Nanoscale Materials
In Situ Transmission Electron Microscopy Investigation of All Solid-state Sodium Batteries
Unveiling Electronic Structure Evolution in Complex Oxides: Tuning Charge, Spin and Structural Order
Tailoring Properties of Printed Field-Effect Transistors by Design and Material Changes
Design and Atomic Scale Characterization of Complex Oxide Interfaces
Understanding fundamental migration processes during battery cycling and material synthesis using advanced transmission electron microscopy methods
An Electron Microscopy Study on the Prevention of SiC-Fiber Decomposition via the Integration of a Buffer Layer into ZrB₂-based Ceramics
TEM Investigations of Deformation Mechanisms in Nanocrystalline Metals and Multilayered Composites
In situ TEM studies on the graphitization and growth of nanocrystalline graphene from polymers
Graphitizability of Polymer Thin Films: An In Situ TEM Study of Thickness Effects on Nanocrystalline Graphene/Glassy Carbon Formation
Mechanical Properties and Thermal Stability of Nanocrystalline High-entropy Alloys
Evolution of Glassy Carbon Microstructure: In Situ Transmission Electron Microscopy of the Pyrolysis Process
Electron Tomography for 3D imaging of Nanoscale Materials
In Situ Transmission Electron Microscopy Investigation of All Solid-state Sodium Batteries
Unveiling Electronic Structure Evolution in Complex Oxides: Tuning Charge, Spin and Structural Order
Tailoring Properties of Printed Field-Effect Transistors by Design and Material Changes
Design and Atomic Scale Characterization of Complex Oxide Interfaces
Understanding fundamental migration processes during battery cycling and material synthesis using advanced transmission electron microscopy methods