A novel approach to white-light emission using a single fluorescent urea derivative and fluoride

Abstract

First observation of white fluorescence using a single fluorescent urea derivative and fluoride.

Environment-sensitive emission of anionic hydrogen-bonded urea-derivative–acetate-ion complexes and their aggregation-induced emission enhancement

“…p -1Urea was synthesised using a previously reported method 34 . The synthesis and characterisation of p -2Urea and m -2Urea are described in the Supplementary Method 1 and 2 , respectively.…”

“…This behaviour has been characterised for the development of fluorescent molecular sensors for the detection of specific anionic molecules [28][29][30][31] . Moreover, the interaction between anions and fluorescent urea compounds in solution has been considered to be the cause of fluorescence quenching 32,33 , and the light-emission characteristics of fluorescent urea derivatives in the solid-state have almost never been examined 34 . We have developed a molecular design for the two urea substituents at the ortho-positions on the peri-phenyl rings on the naphthalene ring (p-2Urea) based on the characteristics of the molecular structures of conventional AIEE dyes.…”

A novel donor–π–acceptor halochromic 2,6-distyrylnaphthalene chromophore: synthesis, photophysical properties and DFT studies

“…Therefore, the emission spectra cover the entire visible region ranging from 400 nm to 700 nm leading to white light emission (WLE). [21][22][23][24][25][26][27][28] This exceptional feature enables white light emitter chromophores to be utilized in single-component white organic light-emitting diodes (WOLEDs). 29 In this study, in continuation of our previous reports 13, [30][31][32][33] we synthesized a new D-p-A 2,6-distyryl naphthalene molecule containing an amino group as electron-donating and sulfonyl group as electron-withdrawing group in the terminals of the pconjugated system.…”

New White Light-Emitting Halochromic Stilbenes with Remarkable Quantum Yields and Aggregation-Induced Emission

“…Moreover, SWLE-based lighting devices can enjoy lower fabrication costs and less driving voltage than traditional lighting sources. [13][14][15] White uorescence can be obtained through different photochemical procedures such as excited-state intramolecular proton transfer (ESIPT), [16][17][18][19] aggregation-induced emission (AIE), [20][21][22] halochromism [22][23][24][25][26][27][28][29][30] or their combinations. [31][32][33] Halochromism is a speci c type of ionochromism in which a change in pH value can induce the color of a uorescent compound.…”