J 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
Name: Fotoaktivace CO a H2S jako plynných signálních molekul pro biologické a medicinální aplikace
Investor: Czech Science Foundation