CF₃ H-bonding locked aromatic stacking of picric acid with mechanofluorochromic fluorophores: highly selective reusable sensor and rewritable fluorescence platform

Abstract

Tailoring molecular structure of organic fluorescence molecules is one of the important tools used for generating functional materials with desired attributes for optical, opto-electronic and bio-imaging applications. Herein, we have...

High-fidelity detection of picric acid following proton prompted fluorescence quenching by a novel acridine yellow G-based binuclear ZnII-metallacycle

“…17 Regarding this, several research and development programs, humanitarian demining operations 18 and remediation of manufacturing sites have been adapted for the socioeconomic development, which unambiguously require the development of cost effective, highly selective and sensitive instrumentation techniques for PA detection. 19 In this pursuit, several chemo-detection tools for PA have been established, among which fluorogenic sensors are considered to be one of the most promising and advantageous owing to their rapid response, 20 portability and accuracy. 21 While small organic molecules, conjugated polymers, 22 metal organic frameworks, 23 nano-aggregates, 24 etc.…”

Carbazole fluorophore with an imidazole/thiazole unit: contrasting stimuli-induced fluorescence switching, water-sensing and deep-blue emission

“…[18][19][20] Stimuli-responsive uorescence systems are potential materials for environmental/biosensing, information storage and anticounterfeiting. [21][22][23][24][25] A subtle structural change in a uorophore is oen employed to improve uorescence efficiency as well as to achieve tunable and switchable uorescence. [26][27][28][29][30] Control of molecular packing by substitution with an alkyl group can produce uorescence gels, tunable solid-state uorescence, room-temperature phosphorescence and different types of mechanouorochromism.…”

Triphenylamine–boron complexes: molecular thermometry and alkyl chain controlled molecular fluorescent liquids

“…Particularly, stimuli-responsive fluorescence systems have drawn increased attention in recent years because of their potential applications in environmental/biosensing, information storage and anticounterfeiting. [7][8][9][10][11] Molecular structures, conformations, and intermolecular interactions significantly influence the optical properties in the solid state. [12][13][14][15] On the other hand, intramolecular charge transfer (ICT) and molecular conformational change in the excited state often control the solution state fluorescence of donor (D)-acceptor (A) p-conjugated molecules.…”

“…43,44 Molecular structural engineering is used as an important tool to develop fluorescent molecules with multifunctional properties. 8,11,45,46 Triphenylamine (TPA), a conformationally flexible propeller core, is utilized for obtaining smart fluorescent materials with wide fluorescence tuning and NIR emitting materials via structural tailoring. [47][48][49][50][51] A twisted TPA unit was used to derive TADF and TICT fluorescent molecules.…”