Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 33, Pages 37732-37740Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c09630
Keywords
fused porphyrins; conjugated polymers; oxidative coupling; thin films; chemical vapor deposition
Funding
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [865985]
- European Research Council (ERC) [865985] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
Porous and highly conjugated multiply fused porphyrin thin films are prepared from a fast and single-step chemical vapor deposition approach. While the solution-based coupling of porphyrins is usually undertaken at room temperature, the gas phase reaction of nickel(II) 5,15-(diphenyl)porphyrin and iron(III) chloride (FeCl3) is investigated for temperatures as high as 200 degrees C. Helium ion and atomic force microscopy, supported by weight and thickness measurements, shows a drastic decrease of the fused porphyrin thin film's density accompanied by the formation of a mesoporous morphology upon increase of the reaction temperature. The increase of the film's porosity is attributed to formation of a greater amount of HCl (originated from both the oxidative coupling and chlorination reactions) and the release of gaseous FeCl3 byproducts, i.e., Cl-2, at higher deposition temperatures. In addition, high resolution mass spectrometry reveals that increase of the reaction temperature promotes a higher degree of conjugation of the fused porphyrins chains, which ensures that high electronic conductivities are maintained along with high porosity. The method reported herein could enable the engineering of fused porphyrin thin films in sensing and catalytic devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available