Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films
Abstract Nanoporous anodic alumina (nPAA) films formed on aluminum in lower aliphatic carboxylic acids exhibit blue self-coloring and characteristic properties such as photoluminescence (PL), electroluminescence, and electron spin resonance. The blue colors are seemingly originated from the adsorbed...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-87342-8 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832585738056630272 |
|---|---|
| author | Sam Yeon Cho Kangmo Yeo Jin Woo Kim Jin Ho Kwak Deok-Yong Cho Jae Hyuck Jang Sukmin Jeong Yong Chan Choi Sang Don Bu |
| author_facet | Sam Yeon Cho Kangmo Yeo Jin Woo Kim Jin Ho Kwak Deok-Yong Cho Jae Hyuck Jang Sukmin Jeong Yong Chan Choi Sang Don Bu |
| author_sort | Sam Yeon Cho |
| collection | DOAJ |
| description | Abstract Nanoporous anodic alumina (nPAA) films formed on aluminum in lower aliphatic carboxylic acids exhibit blue self-coloring and characteristic properties such as photoluminescence (PL), electroluminescence, and electron spin resonance. The blue colors are seemingly originated from the adsorbed radicals incorporating into the oxide during the aluminum anodization. However, there is lack of reports revealing the detailed activation mechanism of the adatoms in the complexes. This study investigates the blue PL and its correlation with the atomic and electronic structures of the active aluminum surface using multiple theoretical and experimental methods. The results show that the concentration of carboxylates at the nPAA surface is highly correlated with the blue colorization and manifest that unpaired electrons in carbon (derived from the carboxylates) bridging two aluminum atoms at surface can play as an active source of the blue colorization. Therefore, it is suggested that controlling the adsorption of the carboxylate on the alumina membrane having large surface-to-volume ratio can be an efficient way to generate the blue light for the optoelectronic applications. |
| format | Article |
| id | doaj-art-c9ed35ba8ad74819a84ad32ddb9f1733 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-c9ed35ba8ad74819a84ad32ddb9f17332025-01-26T12:32:52ZengNature PortfolioScientific Reports2045-23222025-01-0115111010.1038/s41598-025-87342-8Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina filmsSam Yeon Cho0Kangmo Yeo1Jin Woo Kim2Jin Ho Kwak3Deok-Yong Cho4Jae Hyuck Jang5Sukmin Jeong6Yong Chan Choi7Sang Don Bu8Department of Physics, Jeonbuk National UniversityDepartment of Physics, Jeonbuk National UniversityDepartment of Physics, Jeonbuk National UniversityDepartment of Physics, Jeonbuk National UniversityDepartment of Physics, Jeonbuk National UniversityElectron Microscopy Group for Materials Science, Korea Basic Science InstituteDepartment of Physics, Jeonbuk National UniversityDivision of Energy Technology, Daegu Gyeongbuk Institute of Science and TechnologyDepartment of Physics, Jeonbuk National UniversityAbstract Nanoporous anodic alumina (nPAA) films formed on aluminum in lower aliphatic carboxylic acids exhibit blue self-coloring and characteristic properties such as photoluminescence (PL), electroluminescence, and electron spin resonance. The blue colors are seemingly originated from the adsorbed radicals incorporating into the oxide during the aluminum anodization. However, there is lack of reports revealing the detailed activation mechanism of the adatoms in the complexes. This study investigates the blue PL and its correlation with the atomic and electronic structures of the active aluminum surface using multiple theoretical and experimental methods. The results show that the concentration of carboxylates at the nPAA surface is highly correlated with the blue colorization and manifest that unpaired electrons in carbon (derived from the carboxylates) bridging two aluminum atoms at surface can play as an active source of the blue colorization. Therefore, it is suggested that controlling the adsorption of the carboxylate on the alumina membrane having large surface-to-volume ratio can be an efficient way to generate the blue light for the optoelectronic applications.https://doi.org/10.1038/s41598-025-87342-8 |
| spellingShingle | Sam Yeon Cho Kangmo Yeo Jin Woo Kim Jin Ho Kwak Deok-Yong Cho Jae Hyuck Jang Sukmin Jeong Yong Chan Choi Sang Don Bu Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films Scientific Reports |
| title | Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films |
| title_full | Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films |
| title_fullStr | Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films |
| title_full_unstemmed | Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films |
| title_short | Blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films |
| title_sort | blue photoluminescence from active carboxyl adatoms on nanoporous anodic alumina films |
| url | https://doi.org/10.1038/s41598-025-87342-8 |
| work_keys_str_mv | AT samyeoncho bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT kangmoyeo bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT jinwookim bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT jinhokwak bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT deokyongcho bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT jaehyuckjang bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT sukminjeong bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT yongchanchoi bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms AT sangdonbu bluephotoluminescencefromactivecarboxyladatomsonnanoporousanodicaluminafilms |