Blue-orange emitting carbazole based donor-acceptor derivatives: Synthesis and studies of modulating acceptor unit on opto-electrochemical and theoretical properties

Reversible Red‐/Blue‐Shifted Mechanofluorochromic Properties of Indole‐Based Difluoroboron Compounds with Aggregation‐Induced Emission

“…The above results demonstrated that IÀ PhÀ BF 2 and IÀ PhNpÀ BF 2 possessed ICT properties. Moreover, the Lippert-Mattaga plots (the Stoke's shifts vs. orientation polarity parameter, Δv st vs. Δf) of IÀ PhÀ BF 2 and IÀ PhNpÀ BF 2 displayed linear variation with good correlation coefficient over the entire solvent range from n-hexane to CH 3 OH, suggesting that the presence of chargetransfer excited state from the donor indole group to the acceptor BF 2 moiety, [30,31] as shown in Figure 2. And the positive slopes also indicated that the dipole moments of the ICT excited state were larger than that of the ground state because of the substantial charge redistribution, stemming from the relaxation of the initially formed Franck-Condon excited state.…”

“…The results of the Φ f of IÀ PhÀ BF 2 and IÀ PhNpÀ BF 2 suggested that it decreased first then increased, the significant change gave an evidence for the formation of nanoscopic aggregates. [30] Additionally, the absorption spectra in THF/H 2 O mixtures with different water fraction were tested, as shown in Figure S11 (ESI †). A level-off tail was observed in high f w , indicating that nano-aggregates had been formed due to hydrophobic nature.…”

Efficient Synthesis of Quinoxalines by I2/AgNO3 Co‐Promoted One‐Pot Annulation of Alkynes with 1,2‐Arylenediamines

“…For experimental procedures, NMR spectra, and characterization of the compounds please see the supporting information file. [23][24][25][26][27][28][29][30][31]…”

A New Series of D1‐A‐D2‐type ESIPT‐TICT‐AIE Active Orange‐to‐red Emissive Unsymmetrical Azines: Their All‐throughout Mechanochemical Synthesis and Exploration of Photophysical Properties

“…The molecules exhibiting TICT property are strongly fluorescent in the aggregated state as well as in the solution phase overcoming the self-quenching at high concentrations which allows the use of these fluorophores in a wide range of applications. [19][20][21] In recent times, AIEgens exhibiting dual photophysical properties of AIE-ESIPT or AIE-TICT have garnered much attention in fluorimetric systems owing to their solvent polarity and aggregation dependent variable fluorescence responses. [22][23][24][25][26][27] In particular, azines have displayed excellent AIE-TICT dual properties.…”