Rational design of a solvatochromic coumarin aldehyde for the development of an effective water and humidity sensor

Alen Sam Thomas, Apurba Pramanik, Sara Amer, Vered Marks, Mindy Levine

פרסום מחקרי: פרסום בכתב עתמאמרביקורת עמיתים

תקציר

Reported herein is the design, synthesis, and water detection application of a highly solvatochromic coumarin derivative (compound 1), whose solvatochromism derives from the presence of both an electron-withdrawing aldehyde (i.e., formyl) substituent, and an electron-donating diethylamino group. Although this compound has been previously reported as a component of larger architectures, its solvatochromic properties as a stand-alone fluorophore have not been reported. Our investigations revealed that compound 1 demonstrated a high degree of fluorescence responsiveness to polar protic solvents, with a particularly strong decrease in its fluorescence occurring in the presence of small amounts of water. This water-based responsiveness was further exploited in the development of a fluorescent water sensor, which responds to both the presence of liquid water and water vapour with rapid, sensitive (detection limits as low as 0.05% (water/acetonitrile; v/v)), and irreversible fluorescence quenching.

שפה מקוריתאנגלית
מספר המאמר111324
כתב עתDyes and Pigments
כרך216
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - אוג׳ 2023

ASJC Scopus subject areas

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