Detailed Information on Publication Record
2020
Structural Modifications of Nile Red Carbon Monoxide Fluorescent Probe: Sensing Mechanism and Applications
MADEA, Dominik, Marek MARTÍNEK, Lucie MUCHOVA, Jiri VANA, Libor VITEK et. al.Basic information
Original name
Structural Modifications of Nile Red Carbon Monoxide Fluorescent Probe: Sensing Mechanism and Applications
Authors
MADEA, Dominik (203 Czech Republic, belonging to the institution), Marek MARTÍNEK (203 Czech Republic, belonging to the institution), Lucie MUCHOVA (203 Czech Republic), Jiri VANA (203 Czech Republic), Libor VITEK (203 Czech Republic) and Petr KLÁN (203 Czech Republic, guarantor, belonging to the institution)
Edition
Journal of Organic Chemistry, Washington, D.C. American Chemical Society, 2020, 0022-3263
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10401 Organic chemistry
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.354
RIV identification code
RIV/00216224:14310/20:00114239
Organization unit
Faculty of Science
UT WoS
000518875700055
Keywords in English
TURN-ON PROBE; LIVING CELLS; SENSITIVE DETECTION; SELECTIVE DETECTION; FLUOROGENIC PROBE; NITRIC-OXIDE; DUAL PROBE; CO; COMPLEXES; DYES
Tags
Tags
International impact, Reviewed
Změněno: 17/2/2023 21:06, Mgr. Michaela Hylsová, Ph.D.
Abstract
V originále
Carbon monoxide (CO) is a cell-signaling molecule (gasotransmitter) produced endogenously by oxidative catabolism of heme, and the understanding of its spatial and temporal sensing at the cellular level is still an open challenge. Synthesis, optical properties, and study of the sensing mechanism of Nile red Pd-based CO chemosensors, structurally modified by core and bridge substituents, in methanol and aqueous solutions are reported in this work. The sensing fluorescence "off-on" response of palladacycle-based sensors possessing low-background fluorescence arises from their reaction with CO to release the corresponding highly fluorescent Nile red derivatives in the final step. Our mechanistic study showed that electron-withdrawing and electron-donating core substituents affect the rate-determining step of the reaction. More importantly, the substituents were found to have a substantial effect on the Nile red sensor fluorescence quantum yields, hereby defining the sensing detection limit. The highest overall fluorescence and sensing rate enhancements were found for a 2-hydroxy palladacycle derivative, which was used in subsequent biological studies on mouse hepatoma cells as it easily crosses the cell membrane and qualitatively traces the localization of CO within the intracellular compartment with the linear quantitative response to increasing CO concentrations.
Links
GA18-12477S, research and development project |
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