Novel Fluorescence Probes Based on 2,6-Donor−Acceptor-Substituted Anthracene Derivatives

Abstract

[reaction: see text] The fluorescence properties of selected derivatives of 6-methoxyanthracene-2-carboxylic acid were studied. The corresponding ester and oxazoline derivatives exhibit a moderate solvatochromism, which is caused by the donor-acceptor interplay. The fluorescence band shift and intensity of oxazoline 1f may be reversibly modulated by protonation or complexation with silver ions; thus, the oxazoline heterocycle serves as a useful substituent with switchable acceptor strength.

Multi-functional architectures supported on organostannoxane scaffolds

“…Recent interest in new organic/organometallic [41][42][43][44][45][46][47][48][49] luminescent materials prompted us to explore stan- These organostannoxane-supported multi-fluorene compounds emit quite strongly upon excitation at their maximum absorption wavelengths. These are good blue emitters (emission maximum between 330 and 410 nm).…”

Sensing and fluorescence behaviors of complex formation between new lariat crown ethers bearing fluorescence sidearm and metal ions in methanol solution

“…NaH (0. 8 Synthesis of 3-phenoxypropyl sym-dibenzo-16-crown-5 ether 4: was prepared as follow: An amount of 1.73 g (5 mmol) of hydroxy-sym-dibenzo-16-crown-5 ether was dissolved in 50 mL of anhydrous THF. Then, 0.8 g (10 mmol) of t-BuOK was added under nitrogen.…”

“…In the meantime, the construction of supramolecular structures utilizing noncovalent bonds such as hydrogen bonding, p-donor-acceptor interaction, and ligand-metal interaction have attracted considerable interest [2]. calixarene, and cyclodextrin derivatives together with fluorophores such as naphthalene, umbeliferone, anthracene, or pyrene [3][4][5][6][7][8][9][10][11][12]. The effect of cation binding on the fluorescent spectra of Dibenzo-18-crown-6 was first reported by Shizuka et al [13] that provided good quantitative correlations with alkali and alkaline earth cation analyses in solution.…”

Functionalization of anthracene: A selective route to brominated 1,4-anthraquinones

“…We also report an effective synthetic route to 1,4-dione 28 starting from 9,10-dibromoanthracene ( 1 ) in four steps. The compounds constitute potentially important keys for the synthesis of pharmaceutical chemicals [4–7], natural products [8–9] and donor properties [10–11]. Anthraquinone 28 may be used as precursor for 9,10-disubstituted-2-phenoxy-anthracene-1,4-dione derivatives that are difficult to synthesize by other routes.…”