Kinetic studies on visible-light-switchable photochromic fluorophores based on diarylethenes

Autor:	Britta Seefeldt, Kai Altenhöner, Markus Sauer, Thomas Geisler, Jochen Mattay, Oliver Tosic
Rok vydání:	2011
Předmět:	Fluorophore Light Rhodamines Ethylenes Conjugated system Photochemistry Fluorescence Rhodamine Kinetics chemistry.chemical_compound Photochromism Diarylethene chemistry Spectrophotometry Ultraviolet Thermal stability Physical and Theoretical Chemistry Fluorescent Dyes Visible spectrum
Zdroj:	Photochemical & Photobiological Sciences. 10:1488-1495
ISSN:	1474-9092 1474-905X
DOI:	10.1039/c1pp05051f
Popis:	We present three recently developed photochromic fluorophores that are based on diarylethenes with elongated conjugated π-systems. The diarylethenes 1 and 3 can be switched from their open to their closed form with visible light. The diarylethenes 1 and 2 are covalently coupled to a standard rhodamine B-based fluorophore and act as photoswitchable resonance energy acceptors. By controlling their switching state, the fluorescence intensity of the dye can be modulated. The third compound 3 is a diarylethene that shows photoswitchable inherent fluorescence due to its stilbazolium-like structure. Ensemble experiments demonstrate that diarylethene-based photoswitches show superior characteristics regarding their switching performance, thermal stability and fatigue resistance. These attributes make them promising candidates for super-resolution imaging methods that are based on the determinate fluorescence switching of fluorophores between an off- and an on-state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7da80860c7f030a02c9b3aeef9498f08 https://doi.org/10.1039/c1pp05051f Zobrazit plný text záznamu Full text from SpringerLink