Blue-emitting acridine-tagged silver(i)-bis-N-heterocyclic carbene

Abstract

The synthesis and photophysical properties of blue-emitting acridine-tagged silver(i)-bis-N-heterocyclic carbene are reported.

AcridineN‐Heterocyclic Carbene Gold(I) Compounds: Tuning from Yellow to Blue Luminescence

“…Thus, the contribution of different excitations to the overall emission must be considered as the excitation from HOMO/HOMO‐2 of acridine/ NHC−Au−Cl to only LUMO/LUMO+2 of acridine/acridine−NHC−Au−Cl moiety. The similar emission trend was reported with 4,5‐bis[(N‐aryl‐imidazol‐2‐ylidene)methyl]acridine silver(I) hexafluoro‐phosphate [20] . The quantum shift of emission property from 1 to 2 to 3 can be attributed to the unique alkyl folding along with inter and intramolecular interactions.…”

Reaction of chloroauric acid with histidine in microdroplets yields a catalytic Au–(His)2complex

“…5b, and obtained the low energy for the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) is 3.66 eV, which is consistent with the NHC ligand coordinated with other metal ion. [51][52][53] Combined with the optimized structural and the electronic cloud density, the Au-(His) 2 molecule exhibits a singlet ground-state electronic conguration with HOMO and the LOMO best described as a formally sp 2 -hydridized lone pair and an unoccupied p-orbital at the carbene carbon. The adjacent s-electron withdrawing and p-electrondonating nitrogen atoms stabilize this structure both inductively by donating electron density into the empty p-orbital.…”

Silver(I)‐N‐heterocyclic carbene complexes challenge cancer; evaluation of their anticancer properties and in silico studies

“…It was observed about 0.48 eV increase in the HOMO and LUMO energy gap in complex 56 . Researchers also found that the HOMO orbitals largely located on the NHC, whereas the LUMO predominately located on the acridine moiety, in complex 56 (Prabusankar et al, 2019).…”

“…Prabusankar et al synthesized, 4,5‐bis[(N‐isopropylimidazol‐2‐ylidene)methyl]acridine silver(I) hexafluorophosphate as complex 56 was and its photophysical properties were evaluated (Figure 18) (Prabusankar et al, 2019). The spectral and structural features of complex 56 was compared with theoretical studies.…”