Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Aleksander Koll"'
Publikováno v:
Molecules, Vol 27, Iss 3, p 792 (2022)
Intra- and intermolecular interactions have been explored in selected N-oxide derivatives: 2-(N,N-dimethylamino-N-oxymethyl)-4,6-dimethylphenyl (1) and 5,5’-dibromo-3-diethylaminomethyl-2,2’-biphenol N-oxide (2). Both compounds possess intramolec
Externí odkaz:
https://doaj.org/article/e959b68f340d467a830cb37da78812b4
Autor:
Aleksander Koll
Publikováno v:
International Journal of Molecular Sciences, Vol 4, Iss 7, Pp 434-444 (2003)
Abstract: The differences between the intramolecular proton transfer in Mannich and Schiff bases are discussed. The tautomeric forms being in equilibrium in both types of molecules are seriously different. In Mannich bases there are in equilibrium th
Externí odkaz:
https://doaj.org/article/dfad376c44534a9eadad3504f24b6118
Autor:
Malgorzata Guzik, R. Lisiecki, Aleksander Koll, J. Jański, Marcin Sobczyk, Georges Boulon, Yu. Gerasymchuk, Janina Legendziewicz
Publikováno v:
Journal of Luminescence
Journal of Luminescence, Elsevier, 2018, 193, pp.84-89. ⟨10.1016/j.jlumin.2017.09.002⟩
Journal of Luminescence, Elsevier, 2018, 193, pp.84-89. ⟨10.1016/j.jlumin.2017.09.002⟩
International audience; Lanthanide complexes with phthalocyanines (Pc) and porphyrins are of great interest because of unique luminescence behavior and many applications, mainly in medicine, optoelectronics, lasers and solar energy conversion. This p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94d1ba431ef21d4b0fe049ca6f6f9bb7
https://hal.archives-ouvertes.fr/hal-02285744
https://hal.archives-ouvertes.fr/hal-02285744
Autor:
J. Jański, Janina Legendziewicz, L. A. Tomachynski, Aleksander Koll, Yu. Gerasymchuk, G. Boulon, Wieslaw Strek, Malgorzata Guzik, Yannick Guyot
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry
Journal of Photochemistry and Photobiology A: Chemistry, Elsevier, 2015, 309, pp.65-71. ⟨10.1016/j.jphotochem.2015.04.022⟩
Journal of Photochemistry and Photobiology A: Chemistry, Elsevier, 2015, 309, pp.65-71. ⟨10.1016/j.jphotochem.2015.04.022⟩
Lanthanide complexes with phthalocyanines (Pc) and porphyrins belong to the group of most investigated compounds because of their unique luminescence properties and variety of applications. The special interest is directed to medical applications, ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9aff0ad894c553a87f6a38135dd7920d
https://doi.org/10.1016/j.jphotochem.2015.04.022
https://doi.org/10.1016/j.jphotochem.2015.04.022
Publikováno v:
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 186
Joint studies by IR spectroscopy, dipole moments, average molecular weight measurements and DFT calculations on the self-aggregation of N , N ′-diallylureas and N , N ′-diallylthioureas in solvents of different polarities were performed. Simultan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce0a8ff9a9a647aad5ff0b6463ea96e0
https://pubmed.ncbi.nlm.nih.gov/28633073
https://pubmed.ncbi.nlm.nih.gov/28633073
Autor:
Jadwiga Maniewska, Aleksander Koll, Grzegorz Grynkiewicz, Katarzyna Cieślik-Boczula, Andrzej B. Hendrich, Wiesław Szeja
Publikováno v:
Vibrational Spectroscopy. 62:64-69
Genistein, a main soy isoflavone, is well known as phytoestrogen and antioxidant but details of its interactions with lipid membranes are poorly understood. The aim of this work was to elucidate the interaction of genistein, its derivatives and querc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ffe6bf3845713fba8fecda86337ef8a
https://doi.org/10.1016/j.vibspec.2012.05.010
https://doi.org/10.1016/j.vibspec.2012.05.010
Publikováno v:
Journal of Molecular Structure. 1018:54-63
The paper consists of the joint studies of average molecular weight, dipole moments and the IR spectra of symmetric dialkyl, from dimethyl to dihexyl, thioureas, performed in function of concentration in low polar solvents, with the aim to determine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48214e69e96a8c04edd66b675f6d92fa
https://doi.org/10.1016/j.molstruc.2012.01.042
https://doi.org/10.1016/j.molstruc.2012.01.042
Autor:
Aleksander Koll, Maciej Barys, Barbara Hachuła, Henryk T. Flakus, Agnieszka Adamczyk-Woźniak, Andrzej Sporzyński, Jerzy Kołodziejczak
Publikováno v:
Crystal Growth & Design. 12:589-598
Two new secondary Mannich bases, 4-bromo-2-[(aminopropyl)methyl]-phenol (1) and 4-nitro-2-[(aminopropyl)methyl]-phenol (2), were synthesized. Crystal structures were determined at liquid nitrogen temperature. It was found that in both compounds the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b72b59000b0c6772f882b21335b21ba
https://doi.org/10.1021/cg201179x
https://doi.org/10.1021/cg201179x
Autor:
Aleksander Koll, Galina I. Dovbeshko, Olena Fesenko, Jarosław J. Panek, Aneta Jezierska-Mazzarello
Publikováno v:
ChemPhysChem. 12:2485-2495
Adsorption of guest molecules on host surfaces can lead to dramatic changes in the spectral properties of the guest. One such effect is surface-enhanced infrared absorption (SEIRA), observed when the guest is adsorbed on, for example, thin films, met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a29a236238e9538c6133bd82507ed482
https://doi.org/10.1002/cphc.201100067
https://doi.org/10.1002/cphc.201100067
Autor:
Aleksander Koll
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 92:313-328
The dipole moment of 17 Mannich bases has been measured for a broad range of the intramolecular hydrogen bond strength. The increase of the dipole moment caused by the hydrogen bond formation has been calculated and is discussed in terms of the proto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac0248066bce6bda7a0a627b934783c2
https://doi.org/10.1002/bscb.19830920401
https://doi.org/10.1002/bscb.19830920401