Importance of the donor unit on fluoranthene for selective detection of nitro aromatic explosives

Recent advances in aggregation-induced emission (AIE)-based chemosensors for the detection of organic small molecules

“…Moreover, Nutalapati et al reported two AIE active fluoranthene compounds that are functionalized with phenyl and thiophene substituents, respectively ( D42 ) via the Knoevenagel condensation and Diels–Alder reaction. 382 D42 with bright-blue fluorescence was highly selective to PA amongst other NACs, with quenching efficiency of up to 95%, whereby PET between fluoranthene derivatives and PA led to quenching of fluorescence (Fig. 46d).…”

Fluoranthene-based derivatives for multimodal anti-counterfeiting and detection of nitroaromatics

“…7,9-Diphenyl-8 H -cyclopenta[ a ]acenaphthylen-8-one, 3 was synthesized according to the procedure reported by our group, 28 and detailed analytical characterization is presented in (Scheme S1, ESI†) and Fig. S1 and S2, ESI †.…”

“…Computational studies were carried out using the Gaussian 09 Program by geometry optimization with a basis set of 6-31g* and the hybrid B3LYP parameter. 40 2.1 Synthesis 7,9-Diphenyl-8H-cyclopenta[a]acenaphthylen-8-one, 3 was synthesized according to the procedure reported by our group, 28 and detailed analytical characterization is presented in (Scheme S1, ESI †) and Fig. S1 2.1.1 Synthesis of 2-(7,10-diphenylfluoranthen-8-yl)ethanol (FOH).…”

“…[24][25][26] Moreover, the influence of the alkyl chain and aromatic substituents on the photophysical characteristics of fluoranthene for the identification of NACs was demonstrated in our previous studies. 27,28 Based on the available literature, developing novel chemosensors with higher selectivity and sensitivity is highly attributed to the fluorophores containing an electron-rich environment and prolonged conjugation. Furthermore, the functional groups of fluorophores should be reacting/hydrophilic to engage in hydrogen bonding and electrostatic interaction with nitro analytes, and substituents at the periphery are advantageous for preventing aggregation.…”

D–π–A–π–D-Configured Imidazole-Tethered Benzothiadiazole-Based Sensor for the Ratiometric Discrimination of Picric Acid: Applications in Latent Fingerprint Imaging

“…Owing to critical problems related to national security and environmental safety, selective detection of nitro explosives has attracted significant interest recently. − Picric acid (PA) is widely used as a reagent in chemical industries, leather products, and dyes . However, PA causes severe health hazards such as skin irritation, headache, and respiratory disorders .…”