Zobrazeno 1 - 10
of 323
pro vyhledávání: '"Jacek Waluk"'
Autor:
Anna Stefaniuk, Sylwester Gawinkowski, Barbara Golec, Aleksander Gorski, Kosma Szutkowski, Jacek Waluk, Jarosław Poznański
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract Normal and heavy water are solvents most commonly used to study the isotope effect. The isotope effect of a solvent significantly influences the behavior of a single molecule in a solution, especially when there are interactions between the
Externí odkaz:
https://doaj.org/article/b224d3e74e1349a2a1c5a24347d25895
Autor:
Joanna Buczyńska, Agnieszka Gajewska, Aleksander Gorski, Barbara Golec, Krzysztof Nawara, Renata Rybakiewicz, Jacek Waluk
Publikováno v:
Chemistry, Vol 3, Iss 1, Pp 104-115 (2021)
A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained and characterized by spectral and photophysical studies. Three COT-free porphyrins serve
Externí odkaz:
https://doaj.org/article/6a34266f82744878b6bfc4c1f11a5dfd
Autor:
Marta Penconi, Lorenzo Ferraro, Jacek Waluk, Lamberto Duò, Franco Ciccacci, Alberto Bossi, Marcello Campione, Gianlorenzo Bussetti
Publikováno v:
Proceedings, Vol 56, Iss 1, p 44 (2021)
Thin organic films are widely used in sensors, solar cells, and optical devices due to their intense absorption in the visible/near-infrared (IR) region. Shifting, quenching, or reshaping of some spectral features can be achieved by chemical function
Externí odkaz:
https://doaj.org/article/97acfdb57df14681962219e8d84bdc9b
Publikováno v:
Medžiagotyra, Vol 17, Iss 3, Pp 232-235 (2011)
In this work we have produced visible light emitting quantum dots (QD) of CdSe/ZnS and precipitated them onto the surface of porous silicon structure. Combining basic materials, such as porous silicon, with nanoparticles enables producing of low-cost
Externí odkaz:
https://doaj.org/article/b484de24fb4b4553b20c5d96512f87a1
Publikováno v:
Journal of Porphyrins and Phthalocyanines. 27:563-568
Nitration of 2,7,12,17-tert-butylporphycene, leading mainly to meso-substituted 9-nitro- and 9,20-nitro- derivatives, also yielded a small amount of porphycene bearing three tert-butyl moieties and the nitro group at the [Formula: see text] position.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a0980e780b7f5bfd235365d2c8632e5
https://doi.org/10.1142/s1088424623500360
https://doi.org/10.1142/s1088424623500360
Autor:
Simon Jaekel, Emile Durant, Monika Schied, Mats Persson, Jakub Ostapko, Michał Kijak, Jacek Waluk, Leonhard Grill
Publikováno v:
Physical Chemistry Chemical Physics. 25:1096-1104
We have studied 22-oxahemiporphycene molecules by a combination of scanning tunneling microscopy at low temperatures and density functional theory calculations. In contrast to other molecular switches with typically two switching states, these molecu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ba4cb1418ff5656b714fc8d57346e6f
https://doi.org/10.1039/d2cp04746b
https://doi.org/10.1039/d2cp04746b
Autor:
Jacek Waluk
Publikováno v:
Spectroscopy and Computation of Hydrogen‐Bonded Systems. :145-172
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b5979dfb42b1e822390153c973a7bc8
https://doi.org/10.1002/9783527834914.ch6
https://doi.org/10.1002/9783527834914.ch6
Autor:
Kamińska, Sylwia M. Berus, Ariadna B. Nowicka, Julia Wieruszewska, Krzysztof Niciński, Aneta A. Kowalska, Tomasz R. Szymborski, Izabela Dróżdż, Maciej Borowiec, Jacek Waluk, Agnieszka
Publikováno v:
International Journal of Molecular Sciences; Volume 24; Issue 11; Pages: 9706
In this study, the intrinsic surface-enhanced Raman spectroscopy (SERS)-based approach coupled with chemometric analysis was adopted to establish the biochemical fingerprint of SARS-CoV-2 infected human fluids: saliva and nasopharyngeal swabs. The nu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::9e5ff9d1e721da7bf62bd3c04c6effc3
Autor:
Jacek Waluk
Publikováno v:
Pure and Applied Chemistry.
Quantum yields of fluorescence of porphycenes – porphyrin isomers – can vary by orders of magnitude, even for very similar derivatives, such as meso-dimethyl- vs. meso-tetramethylporphycene. In weakly emitting porphycenes the fluorescence intensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1ea0a97d6511fd3e422e89570b72890
https://doi.org/10.1515/pac-2022-1107
https://doi.org/10.1515/pac-2022-1107
Publikováno v:
Photochem; Volume 2; Issue 2; Pages: 299-307
The kinetics of relaxation of high-lying electronic states of porphycene (porphyrin isomer) embedded in different cryogenic matrices were studied using picosecond time-resolved fluorescence (TRF) and transient absorption (TA) techniques. The molecule
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::939dc3c2f319210a6b0c51ab217985bc
https://doi.org/10.3390/photochem2020021
https://doi.org/10.3390/photochem2020021