Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane
Lignite humic acid on reaction with formaldehyde and aqueous alkali led to a polybicyclo[3.3.1]nonane. This was characterized spectroscopically using mass spectrometry, FT-IR, powder X-ray diffraction, TEM, and NMR studies (1H-NMR, CP-MAS-SS-NMR) which though challenging were useful for confirming t...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2023-01-01
|
| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2023/5580382 |
| _version_ | 1797655653882265600 |
|---|---|
| author | Sujeet Kumar Thakur Seera Raviteja Tayur N. Guru Row Sambasivan Venkat Eswaran |
| author_facet | Sujeet Kumar Thakur Seera Raviteja Tayur N. Guru Row Sambasivan Venkat Eswaran |
| author_sort | Sujeet Kumar Thakur |
| collection | DOAJ |
| description | Lignite humic acid on reaction with formaldehyde and aqueous alkali led to a polybicyclo[3.3.1]nonane. This was characterized spectroscopically using mass spectrometry, FT-IR, powder X-ray diffraction, TEM, and NMR studies (1H-NMR, CP-MAS-SS-NMR) which though challenging were useful for confirming the structure of the BCN polymer. The product showed an envelope peak in its MALDI-MS spectrum, based on which M̅n, M̅w, and polydispersity index have been calculated. Based on the NMR spectrum of intermediate, the presence of the N-formyl group has been shown in it. The new polymer could be useful in agriculture in water-deficient areas. Most papers on humic acids include only broad and general information like elemental analysis (occasionally TEM, SEM, TGA, DSC, etc.). Very complicated structures have been proposed by scientists earlier. Only in very recent years, it has been recognized that these are relatively small molecules which masquerade as supramolecular structures. It is pointed out that most papers do not put down the structure of the compound and provide no concrete proof for proposing such structures. The novelty of our work is that we have characterized the precise molecular weights based on mass spectrometry and NMR spectroscopy along with a well-defined structure. This is not the case in most other publications. |
| first_indexed | 2024-03-11T17:17:39Z |
| format | Article |
| id | doaj.art-902ca523774f45f39875efe1f7fef7e2 |
| institution | Directory Open Access Journal |
| issn | 1687-9430 |
| language | English |
| last_indexed | 2024-03-11T17:17:39Z |
| publishDate | 2023-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj.art-902ca523774f45f39875efe1f7fef7e22023-10-20T00:00:07ZengHindawi LimitedInternational Journal of Polymer Science1687-94302023-01-01202310.1155/2023/5580382Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonaneSujeet Kumar Thakur0Seera Raviteja1Tayur N. Guru Row2Sambasivan Venkat Eswaran3TERI School of Advanced StudiesSolid State and Structural Chemistry UnitSolid State and Structural Chemistry UnitSt Stephen’s CollegeLignite humic acid on reaction with formaldehyde and aqueous alkali led to a polybicyclo[3.3.1]nonane. This was characterized spectroscopically using mass spectrometry, FT-IR, powder X-ray diffraction, TEM, and NMR studies (1H-NMR, CP-MAS-SS-NMR) which though challenging were useful for confirming the structure of the BCN polymer. The product showed an envelope peak in its MALDI-MS spectrum, based on which M̅n, M̅w, and polydispersity index have been calculated. Based on the NMR spectrum of intermediate, the presence of the N-formyl group has been shown in it. The new polymer could be useful in agriculture in water-deficient areas. Most papers on humic acids include only broad and general information like elemental analysis (occasionally TEM, SEM, TGA, DSC, etc.). Very complicated structures have been proposed by scientists earlier. Only in very recent years, it has been recognized that these are relatively small molecules which masquerade as supramolecular structures. It is pointed out that most papers do not put down the structure of the compound and provide no concrete proof for proposing such structures. The novelty of our work is that we have characterized the precise molecular weights based on mass spectrometry and NMR spectroscopy along with a well-defined structure. This is not the case in most other publications.http://dx.doi.org/10.1155/2023/5580382 |
| spellingShingle | Sujeet Kumar Thakur Seera Raviteja Tayur N. Guru Row Sambasivan Venkat Eswaran Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane International Journal of Polymer Science |
| title | Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane |
| title_full | Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane |
| title_fullStr | Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane |
| title_full_unstemmed | Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane |
| title_short | Base-Catalyzed Polymerization of a Substituted Methylenebicyclo[3.3.1]nonane |
| title_sort | base catalyzed polymerization of a substituted methylenebicyclo 3 3 1 nonane |
| url | http://dx.doi.org/10.1155/2023/5580382 |
| work_keys_str_mv | AT sujeetkumarthakur basecatalyzedpolymerizationofasubstitutedmethylenebicyclo331nonane AT seeraraviteja basecatalyzedpolymerizationofasubstitutedmethylenebicyclo331nonane AT tayurngururow basecatalyzedpolymerizationofasubstitutedmethylenebicyclo331nonane AT sambasivanvenkateswaran basecatalyzedpolymerizationofasubstitutedmethylenebicyclo331nonane |