Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films
Relative abundance of vanadyl etio-porphyrin-III, VO-EtioP-III, a typical geoporphyrin, reaches its maximum in solid fossil fuels (coals). This determines the interest in studying supramolecular structure and solid-state properties of this compound. Unlike planar etio-type porphyrins, the visible ab...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2024-12-01
|
| Series: | Supramolecular Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667240524000138 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846099808330186752 |
|---|---|
| author | Andrey I. Koptyaev Ekaterina D. Rychikhina Yury A. Zhabanov Vlad V. Travkin Georgy L. Pakhomov |
| author_facet | Andrey I. Koptyaev Ekaterina D. Rychikhina Yury A. Zhabanov Vlad V. Travkin Georgy L. Pakhomov |
| author_sort | Andrey I. Koptyaev |
| collection | DOAJ |
| description | Relative abundance of vanadyl etio-porphyrin-III, VO-EtioP-III, a typical geoporphyrin, reaches its maximum in solid fossil fuels (coals). This determines the interest in studying supramolecular structure and solid-state properties of this compound. Unlike planar etio-type porphyrins, the visible absorption spectra of VO-EtioP-III undergo significant transformation in transition from a solution to solid films, which is associated with formation of supramolecular aggregates. In this work, we compare the spectra of VO-EtioP-III films deposited by thermal evaporation of powder in vacuum (VTE) or by spin-coating of dissolved compound (SC) to prove that they are similar to those observed for binary solutions in which adding water to methanol also initiates aggregation. The absorption spectra of VTE-films are very sensitive to the film thickness and deposition conditions. The spectral studies are supplemented with analysis of the microscopic morphology and conducting properties of the films. While the photoconductivity of solution-processed VO-EtioP-III films suffers due to the inhomogeneity of their structure, the VTE-films behave as good photoconductors with a lateral current response to sunlight up to 105. |
| format | Article |
| id | doaj-art-7c7c09db8d6a4dca9e2d0fa35fc36976 |
| institution | Kabale University |
| issn | 2667-2405 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Supramolecular Materials |
| spelling | doaj-art-7c7c09db8d6a4dca9e2d0fa35fc369762024-12-31T04:13:26ZengKeAi Communications Co., Ltd.Supramolecular Materials2667-24052024-12-013100075Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin filmsAndrey I. Koptyaev0Ekaterina D. Rychikhina1Yury A. Zhabanov2Vlad V. Travkin3Georgy L. Pakhomov4Institute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), GSP-105, Nizhny Novgorod 603950, Russian Federation; Ivanovo State University of Chemistry and Technology (ISUCT), 7 Sheremetievskiy Ave., Ivanovo 153000, Russian Federation; Corresponding author at: Institute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), GSP-105, Nizhny Novgorod 603950, Russian Federation.Ivanovo State University of Chemistry and Technology (ISUCT), 7 Sheremetievskiy Ave., Ivanovo 153000, Russian FederationInstitute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), GSP-105, Nizhny Novgorod 603950, Russian Federation; Ivanovo State University of Chemistry and Technology (ISUCT), 7 Sheremetievskiy Ave., Ivanovo 153000, Russian FederationInstitute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), GSP-105, Nizhny Novgorod 603950, Russian Federation; Ivanovo State University of Chemistry and Technology (ISUCT), 7 Sheremetievskiy Ave., Ivanovo 153000, Russian FederationInstitute for Physics of Microstructures of the Russian Academy of Sciences (IPM RAS), GSP-105, Nizhny Novgorod 603950, Russian Federation; Ivanovo State University of Chemistry and Technology (ISUCT), 7 Sheremetievskiy Ave., Ivanovo 153000, Russian FederationRelative abundance of vanadyl etio-porphyrin-III, VO-EtioP-III, a typical geoporphyrin, reaches its maximum in solid fossil fuels (coals). This determines the interest in studying supramolecular structure and solid-state properties of this compound. Unlike planar etio-type porphyrins, the visible absorption spectra of VO-EtioP-III undergo significant transformation in transition from a solution to solid films, which is associated with formation of supramolecular aggregates. In this work, we compare the spectra of VO-EtioP-III films deposited by thermal evaporation of powder in vacuum (VTE) or by spin-coating of dissolved compound (SC) to prove that they are similar to those observed for binary solutions in which adding water to methanol also initiates aggregation. The absorption spectra of VTE-films are very sensitive to the film thickness and deposition conditions. The spectral studies are supplemented with analysis of the microscopic morphology and conducting properties of the films. While the photoconductivity of solution-processed VO-EtioP-III films suffers due to the inhomogeneity of their structure, the VTE-films behave as good photoconductors with a lateral current response to sunlight up to 105.http://www.sciencedirect.com/science/article/pii/S2667240524000138Vanadyl etioporphyrinAggregationThin filmMorphologyConductivity |
| spellingShingle | Andrey I. Koptyaev Ekaterina D. Rychikhina Yury A. Zhabanov Vlad V. Travkin Georgy L. Pakhomov Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films Supramolecular Materials Vanadyl etioporphyrin Aggregation Thin film Morphology Conductivity |
| title | Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films |
| title_full | Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films |
| title_fullStr | Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films |
| title_full_unstemmed | Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films |
| title_short | Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films |
| title_sort | optical absorption of supramolecular aggregates of vanadyl etioporphyrin iii in solutions and thin films |
| topic | Vanadyl etioporphyrin Aggregation Thin film Morphology Conductivity |
| url | http://www.sciencedirect.com/science/article/pii/S2667240524000138 |
| work_keys_str_mv | AT andreyikoptyaev opticalabsorptionofsupramolecularaggregatesofvanadyletioporphyriniiiinsolutionsandthinfilms AT ekaterinadrychikhina opticalabsorptionofsupramolecularaggregatesofvanadyletioporphyriniiiinsolutionsandthinfilms AT yuryazhabanov opticalabsorptionofsupramolecularaggregatesofvanadyletioporphyriniiiinsolutionsandthinfilms AT vladvtravkin opticalabsorptionofsupramolecularaggregatesofvanadyletioporphyriniiiinsolutionsandthinfilms AT georgylpakhomov opticalabsorptionofsupramolecularaggregatesofvanadyletioporphyriniiiinsolutionsandthinfilms |