Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Frank A. J. Geurts"'
1
A comparative analysis of gold-rich plant material using various analytical methods
Autor: Mory Ghomshei, Carel Theo Jozef Wreesmann, Fabio N. Moreno, John A. Meech, Frank A. J. Geurts, Christopher Anderson
Publikováno v: Microchemical Journal. 81:81-85
During 2003 a field demonstration of gold phytoextraction technology was conducted in Brazil. As there is no commercially available biogeochemical standard reference material with an elevated concentration of gold, the trial biomass was analysed for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d29d769995bb589adffd82a7dd41c7a
https://doi.org/10.1016/j.microc.2005.01.004
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2
Fluorescent dyes as efficient photosensitizers for near-infrared Nd3+ emission
Autor: Patrick G. B. Oude Alink, Stephen I. Klink, Johannes W. Hofstraat, Frank G. A. Peters, Frank A. J. Geurts, Frank C. J. M. van Veggel, Lennart Grave
Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :363-372
A series of six dye-functionalized Nd3+ complexes have been synthesized and their photophysical properties have been studied and evaluated. The incorporated dyes dansyl, coumarine, lissamine, and Texas Red possess broad and intense absorption bands i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4adefe3bf6a6d98bed0323e213b84868
https://doi.org/10.1039/b007704f
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3
Cation sensing by patterned self-assembled monolayers on gold
Autor: G. Julius Vancso, Simon Flink, David N. Reinhoudt, Frank C. J. M. van Veggel, Holger Schönherr, Frank A. J. Geurts, Kees van Leerdam
Publikováno v: Journal of the Chemical Society. Perkin transactions II, 2000(10), 2141-2146. Chemical Society
X-Ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) have been used to study the interactions between self-assembled monolayers (SAMs) of crown ether adsorbates and metal ions. Both analytical techniques confirmed the selectivitie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1df8e3c653db728ffdd737bce854bec8
https://doi.org/10.1039/b002606i
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4
Luminescence properties of m-terphenyl-based Eu3+ and Nd3+ complexes: visible and near-infrared emission
Autor: Johannes W. Hofstraat, Frank C. J. M. van Veggel, David N. Reinhoudt, Manon P. Oude Wolbers, Frank A. J. Geurts
Publikováno v: Journal of the Chemical Society. Perkin transactions II, 1997(11), 2275-2282. Chemical Society
Two novel m-terphenyl-based organic ligands (2 and 3) have been synthesized. Photophysical studies show that the ligands form stable complexes with Eu3+, since typical Eu3+ luminescence is observed upon excitation of the ligand. The acyclic complex 2
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37f37ccc7e32b48bd324731d26e92198
https://doi.org/10.1039/a703142d
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5
Novel Preorganized Hemispherands To Encapsulate Rare Earth Ions: Shielding and Ligand Deuteration for Prolonged Lifetimes of Excited Eu3+ Ions
Autor: Bianca H.M. Snellink-Ruël, J.W. Hofstraat, David N. Reinhoudt, Manon P. Oude Wolbers, Frank C. J. M. van Veggel, Frank A. J. Geurts
Publikováno v: Journal of the American Chemical Society. 119:138-144
Quenching of the luminescent excited state of Eu3+ ions by C-H high-vibrational modes was studied by deuteration of the encapsulating ligand and the solvent. Novel polydentate hemispherands providing nine donor atoms, which form overall neutral compl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31489d5a49180deef1c757dc4e44aba1
https://doi.org/10.1021/ja9609314
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6
A systematic study of the photophysical processes in polydentate triphenylene-functionalized Eu3+, Tb3+, Nd3+, Yb3+ and Er3+ complexes
Autor: Stephen I. Klink, Johannes W. Hofstraat, Martinus H. V. Werts, Frank A. J. Geurts, David N. Reinhoudt, Lennart Grave, Frank C. J. M. van Veggel
Publikováno v: Journal of Physical Chemistry A
Journal of Physical Chemistry A, American Chemical Society, 2000, 104, pp.5457-5468. ⟨10.1021/jp994286+⟩
Journal of physical chemistry A, 104(23), 5457-5468. American Chemical Society
m-Terphenyl-based lanthanide complexes functionalized with a triphenylene antenna chromophore ((Ln)1) exhibit sensitized visible and near-infrared emission upon photoexcitation of the triphenylene antenna at 310 nm. Luminescence lifetime measurements
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c3c995ca241c5d5b7464e4dd12f7f87
https://hal.archives-ouvertes.fr/hal-01207770
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7
Self-assembled monolayers of heptapodant b-cyclodextrins on gold
Autor: Frank A. J. Geurts, Jürgen Bügler, Johan F.J. Engbersen, Ed M. E. F. Biemond, Kees van Leerdam, Marcel W. J. Beulen, Frank C. J. M. van Veggel, B. H. M. Lammerink, David N. Reinhoudt
Publikováno v: Langmuir, 14(14), 6424-6429. American Chemical Society
A route was developed for the synthesis of three different cyclodextrin adsorbates: heptakis{6-O-[3-(thiomethyl)propionyl)]-2,3-di-O-methyl}-s -cyclodextrin, heptakis{6-O-[12-(thiododecyl)dodecanoyl)]-2,3-di-O-methyl}-s -cyclodextrin (a short and lon
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5831fc821ea4f6876e3072b03c483b68
https://research.utwente.nl/en/publications/684cca7c-7572-4e89-ad7e-42445c46457a
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8
Sensitized near-infrared emission from Nd3+ and Er3+ complexes of fluorescein-bearing calix[4]arene cages
Autor: Frank A. J. Geurts, David N. Reinhoudt, Frank G. A. Peters, Manon P. Oude Wolbers, Johannes W. Hofstraat, Frank C. J. M. van Veggel, Eric S. E. van Beelen
Publikováno v: Chemistry : a European journal, 4(4), 772-780. Wiley-VCH Verlag
Efficient intramolecular energy transfer (ET) from an excited chromophore to Nd3+ and Er3+ ions with subsequent emission in the near-infrared (h2) is possible in novel compounds (1). These are made by covalent attachment of fluorescein to a calix[4]a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49b1956452153b5e2b51b55e5532615d
https://research.utwente.nl/en/publications/d5844e0c-3856-40f2-a3ac-d3958e4b53d9
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9
Fluorescein and eosin as sensitizing chromophores in near-infrared luminescent ytterbium(III), neodymium(III) and erbium(III) chelates
Autor: Jan W. Verhoeven, Martinus H. V. Werts, Frank A. J. Geurts, Johannes W. Hofstraat
Publikováno v: Chemical Physics Letters
Chemical Physics Letters, Elsevier, 1997, 276, pp.196-201. ⟨10.1016/S0009-2614(97)00800-2⟩
International audience; Near-infrared luminescent ytterbium(III), neodymium(III) and erbium(III) chelates containing organic chromophores derived from fluorescein and eosin have been synthesized and studied spectroscopically. The complexes can be eff
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c48aee28f9fd24a0fccd182aa4dab43
https://hal.archives-ouvertes.fr/hal-01207810
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