0618522 - ÚOCHB 2026 RIV GB eng J - Journal Article
Lamoria, M. - Manna, Debashree - Milton, M. D.
AIEE active dual-state emissive tripodal pyridopyrazine derivatives as multi-stimuli responsive smart organic materials.
Journal of Materials Chemistry C. Roč. 13, č. 13 (2025), s. 6907-6921. ISSN 2050-7526. E-ISSN 2050-7534
Research Infrastructure: e-INFRA CZ II - 90254
Institutional support: RVO:61388963
Keywords : design
Impact factor: 5.7, year: 2023 ; AIS: 1.082, rok: 2023
Method of publishing: Open access
Result website:
https://doi.org/10.1039/D4TC04692GDOI: https://doi.org/10.1039/d4tc04692g

This work presents the synthesis of five novel pyridopyrazine derivatives (PPDs) PP1-PP5. These PPDs have high quantum yields (Phi) up to 0.87 in solid and solution states. This dual-state emissive behavior was supported by AIEE properties. Single crystal X-ray diffraction (SCXRD) studies confirmed the absence of pi-pi stacking interactions in the unit cell. The SCXRD analysis of PP4 also revealed a twisted conformation and herringbone packing arrangement. All pyridopyrazine derivatives detected TFA reversibly in solution and the powdered state. Probe PP2 was also incorporated in the guar-gum borax hydrogel matrix and could detect TFA in the gel phase with a color change from blue to yellow. These PPDs were also exploited for their metal sensing abilities and could selectively sense Hg2+ ions with detection limits in ppm. Theoretical studies were also raised to support experimental findings. The changes in emissive properties with increasing temperature from 30 degrees C to 80 degrees C were also studied for these PPDs.
Permanent Link: https://hdl.handle.net/11104/0365395