Bluish green emission from pyrene-pyrazoline containing heterocyclic materials and their electronic properties

Synthesis, Characterization, and Fluorescence Properties of Two New Heterocyclic Compounds Containing 1,5-Dioxaspiro Group

“…For example, dibenzo[a,c] [1,2,5] tiadiazolo [3,4-i]phenazine [6], fluorimetric [7], hydroxyphenylquinazolinone [8], 3-hydroxyflavone derivative [9], carbazole schiff base [10], have been applied to fluorescence chemosensor or probe. Alkynylgold(III) complexes [11], pyrene-pyrazoline [12], piro-annulated benzimidazole host [13] have been used as organic light-emitting devices. Based on these reasons, different heterocyclic compounds were designed and synthesized by our group for ten years [14][15][16][17].…”

TfOH mediated intermolecular electrocyclization for the synthesis of pyrazolines and its application in alkaloid synthesis

“…17 In addition, the pyrazoline motif is known to exhibit photo-luminescent behaviour due to intra-molecular charge transfer (ICT) in the excited state and also shows hole transport behaviour. [18][19][20][21][22][23][24] Various synthetic approaches have been developed to access these biologically important 1,3,5-trisubstituted pyrazoline/ pyrazole compounds. [25][26][27][28] The most general synthetic approach proceeding via a reaction of 1,3-dicarbonyl compounds with arylhydrazines results in poor regioselectivity.…”

1,3,5‐Triphenylpyrazoline Based Fluorescent Probe for Selective Sensing and Imaging of Glutathione in Live Cell under Oxidative Stress

“…In both conditions, the molecule shows an absorbance maximum at 364 nm, which was attributed to the allowed π – π* transition and intramolecular charge transfer of conjugated double bond in the phenyl substituted pyrazoline ring system (probe 10) . Pyrazoline derivatives are well known to exhibit fluorescence property . The fluorescence emission spectra of probe 10 were measured at different excitation wavelength from 280–400 nm (Figure S6).…”