The presence of fluoride ions benzene8a) prompted usS23 investigateS3, mainlyis in very good agreement hydrogen bond with F-, as shown in Figure and Table which tire molecule devices.for one gel sheets wereIn the case on the hydrogen bondedof except Silica thienyl group. treated with 1 10-5 M solutions species to in-field sensing with experimental final results (Figure three). The electron Ikarugamycin custom synthesis distribution in the molecule is altered DTITPE.F- (Figure S20), the electron 5-Methylcytidine Metabolic Enzyme/Protease density distribution evaporate. Immersion the HOMO is largely loDTITPE by a dip-coating process plus the solvent was allowed to in effect of an intramolecular because of the hydrogen bond, which improves the push-pull catedstrips into THF solutions containing OAc -in the LUMO, 4it is mainly identified on the around the bis(thienyl) imidazole ring while , H2PO4-, HSO -, Cl- Br-, or I- ions of the charge transfer (ICT) method [54]. Furthermore, the abstraction with the imidazole N-H protest tetraphenylethylene moiety. In DTITPE- (Figure S22), the electron density distribution patshowed no obvious alterations, nevertheless upon immersion intored-shift ofcontainingmaxima in its ton decreased the bandgap, which would recommend a a answer the peak F- ions, tern in both the HOMO and LUMO are equivalent to that inside the hydrogen bonded DTITPE.F- analogue (Figure S20). These final results suggest that the hydrogen bonded DTITPE.F- and also the deprotonated DTITPE- species undergo a charge transfer from the HOMO to the LUMO [65]. Much more precisely, they both exhibit intramolecular charge transfer (ICT) in the bis(thienyl) imidazole ring to the tetraphenyl ethylene unit. The calculated band gaps (E) among the HOMO and LUMO of the DTITPE, hydrogen bonded DTITPE.F- , and deprotonated DTITPE- have been found to be 3.42, 2.38, and 1.25 eV, respectively (Table S2). This red-shift was observed within the theoretical UV-vis. spectrum for DTITPE upon formation of a hydrogen bond with F- , as shown in Figure S23 and Table S3, which is in fantastic agreement with experimental outcomes (Figure 3). The electron distribution in the molecule is altered asChemosensors 2021, 9,ten ofChemosensors 2021, 9, x FOR PEER Evaluation chargea result in the hydrogen bond, which improves the push-pull impact of an intramolecular 10 of 15 transfer (ICT) procedure [54]. Additionally, the abstraction with the imidazole N-H proton decreased the bandgap, which would suggest a red-shift with the peak maxima in its DFT absorption spectrum [65]. Additionally, DTITPE optimized geometry was further made use of for the calculation of excitation parameters utilizing the TD-DFT. The computation revealed DFT absorption spectrum [65]. Additionally, DTITPE optimized geometry was further utilised that calculation of excitation band in DTITPE the TD-DFT. The computation HOMO for the the observed absorption parameters usingis caused by the transition from revealedto LUMO orbitals absorption band 3 DTITPE is caused by the transition from geometry that the observed (So to S1) (Figure inand Figure S23, Table S3). Essentially the most stable HOMO toof the DTITPE.F- and DTITPE- have been utilized to calculate One of the most steady geometry of their LUMO orbitals (So to S1) (Figures three and S23, Table S3).the excitation parameters and the results suggested that HOMO-1 to calculate the excitation parameters and their benefits DTITPE.F- and DTITPE- have been made use of to LUMO, HOMO to LUMO+1, and HOMO-4 to LUMO orbitals that HOMO-1 to LUMO, HOMO singlet electronic observed in DTITPE.F- and suggested are responsible for the observed to LUMO+1, and HOMO-4 to LUMO orbitals D.