Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Adam J. Zaczek"'
Autor:
Jarbas José R. Rohwedder, Claudete Fernandes Pereira, J. Axel Zeitler, Eduardo Maia Paiva, Qi Li, Adam J. Zaczek
Publikováno v:
Molecular Pharmaceutics. 18:3578-3587
While theophylline has been extensively studied with multiple polymorphs discovered, there is still currently no conclusive structure for the metastable theophylline form III. In this present work, by combining more widely used techniques such as X-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13719d6ac71efeca1b7674fcef3b9ab7
https://doi.org/10.1021/acs.molpharmaceut.1c00476
https://doi.org/10.1021/acs.molpharmaceut.1c00476
Publikováno v:
Physical Chemistry Chemical Physics. 22:19672-19679
Quinacridone and its substituted analogs are pigments widely used in art and industry. The temperature dependence of the crystal structures of two quinacridone polymorphs (β and γ), along with the common variant 2,9-dimethylquinacridone, were inves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::035c7860b3e26f095cbb0772da11bbbf
https://doi.org/10.1039/d0cp03150j
https://doi.org/10.1039/d0cp03150j
Publikováno v:
Physical chemistry chemical physics : PCCP. 22(35)
Quinacridone and its substituted analogs are pigments widely used in art and industry. The temperature dependence of the crystal structures of two quinacridone polymorphs (β and γ), along with the common variant 2,9-dimethylquinacridone, were inves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::29155bb3288975d8237d894ed00b58a1
https://pubmed.ncbi.nlm.nih.gov/32830208
https://pubmed.ncbi.nlm.nih.gov/32830208
Autor:
Edwin J. Heilweil, Okan Esenturk, Mustafa Köktürk, Adam J. Zaczek, Timothy M. Korter, Yusuf Samet Aytekin
Publikováno v:
Chemical Physics. 512:36-43
One of the most commonly used nonsteroidal anti-inflammatory active pharmaceutical ingredient called Meloxicam has been characterized spectroscopically both by Terahertz (THz) time domain spectroscopy (THz-TDS) and by Fourier Transform Infrared (FTIR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfceab26f063838355686742d8fffbdb
https://doi.org/10.1016/j.chemphys.2018.04.022
https://doi.org/10.1016/j.chemphys.2018.04.022
Autor:
Timothy M. Korter, Adam J. Zaczek
Publikováno v:
Crystal Growth & Design. 17:4458-4466
Cis–trans isomerization of muconic acid is an important component of various chemical syntheses. Despite the existence of three geometric muconic acid isomers, little atomically precise information is actually known of their structures. In this wor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87fe3735c3f53ee593d1a748fb362000
https://doi.org/10.1021/acs.cgd.7b00854
https://doi.org/10.1021/acs.cgd.7b00854
Publikováno v:
The Journal of Physical Chemistry A. 121:3423-3429
Through a combined experimental and theoretical investigation we determine that the fundamental modes of three quinacridones fall in the terahertz spectral range (1–10 THz, ∼30–300 cm–1). In each spectrum the terahertz resonances correspond t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afcd08b30c13fb6e4b4867f8a431a3d2
https://doi.org/10.1021/acs.jpca.7b01582
https://doi.org/10.1021/acs.jpca.7b01582
Autor:
Timothy M. Korter, Yusuf Samet Aytekin, Adam J. Zaczek, Okan Esenturk, Mustafa Köktürk, Edwin J. Heilwei
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
In this study Terahertz (THz) spectra of several commonly used active pharmaceutical ingredients are reported. Results showed that all the API’s had unique bands associated with the structures allowing to analyse both qualitatively and quantitative
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::012230ed5ac82cdb77b5daa184497c14
https://doi.org/10.1109/irmmw-thz.2019.8874394
https://doi.org/10.1109/irmmw-thz.2019.8874394
Autor:
J. Axel Zeitler, Adam J. Zaczek
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
While drugs are typically created, stored, and administered in the more stable crystalline state, there is interest in industrial settings to stabilize amorphous pharmaceuticals to overcome bioavailability constraints. The stability of an amorphous p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a03b0ce1880626d2d817a9a9b1b7d87
https://doi.org/10.1109/irmmw-thz.2019.8873702
https://doi.org/10.1109/irmmw-thz.2019.8873702
Publikováno v:
Chemical communications (Cambridge, England). 54(45)
In ZIF-8 and its cobalt analogue ZIF-67, the imidazolate methyl-groups, which point directly into the void space, have been shown to freely rotate - even down to cryogenic temperatures. Using a combination of experimental terahertz time-domain spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7b1ebf5240dd50b00e830d7a7a89eb69
https://pubmed.ncbi.nlm.nih.gov/29781477
https://pubmed.ncbi.nlm.nih.gov/29781477
Autor:
Timothy M. Korter, Joshua J. Sutton, J. Axel Zeitler, Sara J. Fraser-Miller, Michael T. Ruggiero, Keith C. Gordon, Adam J. Zaczek
The two major polymorphs of the active pharmaceutical ingredient indomethacin were studied using a combination of experimental low-frequency vibrational spectroscopies, theoretical solid-state density functional theory and \textit{ab initio} molecula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b1819cb0ea5319dc62bd1c837ad049c
https://doi.org/10.26434/chemrxiv.6155150.v1
https://doi.org/10.26434/chemrxiv.6155150.v1
