Fluorescence and X-ray detected reversible switching of photochromic nanostructures

Autor:	M. Heilig, T. Klingler, Helmut Port, E. Al-Khalisy, Stephan Rath
Rok vydání:	2004
Předmět:	Materials science Annealing (metallurgy) Biophysics Analytical chemistry Bragg's law General Chemistry Condensed Matter Physics Photochemistry Biochemistry Fluorescence Atomic and Molecular Physics and Optics Amorphous solid Photochromism Nanocrystal Spectroscopy Visible spectrum
Zdroj:	Journal of Luminescence. 108:401-405
ISSN:	0022-2313
DOI:	10.1016/j.jlumin.2004.01.084
Popis:	Ultrathin films of organic photochromic material (fulgides) are prepared via UHV-deposition on helium-cooled substrates. Controlled annealing results in two different types of nanostructures: amorphous dots of tunable size and nanocrystals. Both forms are stable at room temperature. Interconversion between the two photochromic isomers, the colorless E- and the colored C-isomer, can be achieved by irradiation with UV or visible light, respectively. Reversible optical switching of single dots is monitored by confocal fluorescence microscopy. For nanocrystals the isomeric state is monitored by optical-absorption spectroscopy and by X-ray Bragg diffraction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d03938e73d008ff9b9fdab9d56542090 https://doi.org/10.1016/j.jlumin.2004.01.084 Zobrazit plný text záznamu Full Text from ScienceDirect