Synthesis and Photophysical Characterizations of Thermal -Stable Naphthalene Benzimidazoles

Selective and efficient mitochondrial staining with designed 2,1,3-benzothiadiazole derivatives as live cell fluorescence imaging probes

“…26 In other words, the Lippert-Mataga equation evaluates the Stokes shift in terms of the change in dipole moment of the fluorophore on photoexcitation. [27][28][29] A good linearity is observed for all fluorophores (R 2 > 0.80 for all dyes) in different media, indicating high stability of the molecules independently of the solvent, which is a characteristic generally found for 4,7-π-extended BTD derivatives. [30][31][32]…”

Efficient and scalable Pd-catalyzed double aminocarbonylations under atmospheric pressure at low catalyst loadings

“…Besides benzyl amine, a chiral amine also resulted in an excellent yield without affecting the chiral center (15, 90%). Other aliphatic amines were also suitable substrates, up to 95% yields were obtained with linear, cyclic, and heterocyclic substituted amines (16)(17)(18)(19), and slightly inferior outcomes were observed with low-boiling aliphatic amines (16 and 18). When morpholin-4-amine was involved, a moderate yield was obtained (20, 68%).…”

“…It has to be noted that compound 30 was readily completely hydrolyzed in aqueous sodium hydroxide to give a well-known aldose reductase inhibitor (Alrestatin, 32, see ESI ‡) in a quantitative yield. 18 Moreover, in consideration of strongly fluorescent compound 29 having potential applications in molecular sensors, 19 several analogues produced by our protocol (27, 28, 30, and 31) were selected to study their fluorescent properties (Fig. 1).…”

Strong and Reversible Circularly Polarized Luminescence Emission of a Chiral 1,8‐Naphthalimide Fluorophore Induced by Excimer Emission and Orderly Aggregation

“…The UV/Vis absorption andf luorescencee mission spectra of R,R/S,S-2 in different solutions( 1.010 À5 mol L À1 )a re shown in Figure1.R,R/S,S-2 showeda bsorption peaks at around 230 and 355 nm, whicha re attributedt ot he absorption of the 1,8naphthalimide chromophorem oieties. [7] No change could be observed in the THF/H 2 Om ixtures until the fraction of H 2 O was over 80 %, and the absorption intensity of R,R/S,S-2 at both 230 and 355 nm shows ac lear decreaseu pon increasing the water fraction to 95 % ( Figure 1). The leveled-off tails that appear in the visible region are due to light-scattering effects, which indicates the formation of aggregates.…”