Pyrene-Based AIEE-Active Vertically Grown Luminescent Material for Selective and Sensitive Detection of TNT Vapor DOI
Ramprasad Bhatt, Ajeet Singh, Priya Bhandari

et al.

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(43), P. 18365 - 18375

Published: Oct. 23, 2024

Pyrene-based molecules often suffer from the "aggregation-caused quenching" (ACQ) effect because of their rigid planar structure having several π–π stacking interactions, which limit applications as solid-state luminescent materials. From this perspective, it has been strategized to develop two compounds: 2-(pyren-1-yl)-4,6-bis(4-vinylphenyl)-1,3,5-triazine (VinTr) and 4-chloro-N,N-diphenyl-6-(pyren-1-yl)-1,3,5-triazin-2-amine (PyTrDA) in such a way that pyrene triazine frameworks are transformed into "aggregation-induced enhanced emission" (AIEE)-active molecules. All compounds showed positive responses quenching trinitrotoluene (TNT). Within these compounds, PyTrDA excellent results on sensing TNT with high level sensitivity (limit detection = 216 pM solution ∼7.0 ppb vapor phase) selectivity, extending phase. The process is due photoinduced electron transfer (PET) probe analyte (TNT), was confirmed by transient absorption spectroscopy. In addition relatively large quantum yield PyTrDA, morphology transformation sheet-type (observed PyTr) vertically grown nanorod (in PyTrDA) offers increased surface area. nanostructural should properly facilitate diffusion provide confined environment, where one-to-one host–guest interactions between molecule analytes possible. To best our knowledge, first study explores role an area for improved using small organic

Language: Английский

Pyrene-Based AIEE-Active Vertically Grown Luminescent Material for Selective and Sensitive Detection of TNT Vapor DOI
Ramprasad Bhatt, Ajeet Singh, Priya Bhandari

et al.

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(43), P. 18365 - 18375

Published: Oct. 23, 2024

Pyrene-based molecules often suffer from the "aggregation-caused quenching" (ACQ) effect because of their rigid planar structure having several π–π stacking interactions, which limit applications as solid-state luminescent materials. From this perspective, it has been strategized to develop two compounds: 2-(pyren-1-yl)-4,6-bis(4-vinylphenyl)-1,3,5-triazine (VinTr) and 4-chloro-N,N-diphenyl-6-(pyren-1-yl)-1,3,5-triazin-2-amine (PyTrDA) in such a way that pyrene triazine frameworks are transformed into "aggregation-induced enhanced emission" (AIEE)-active molecules. All compounds showed positive responses quenching trinitrotoluene (TNT). Within these compounds, PyTrDA excellent results on sensing TNT with high level sensitivity (limit detection = 216 pM solution ∼7.0 ppb vapor phase) selectivity, extending phase. The process is due photoinduced electron transfer (PET) probe analyte (TNT), was confirmed by transient absorption spectroscopy. In addition relatively large quantum yield PyTrDA, morphology transformation sheet-type (observed PyTr) vertically grown nanorod (in PyTrDA) offers increased surface area. nanostructural should properly facilitate diffusion provide confined environment, where one-to-one host–guest interactions between molecule analytes possible. To best our knowledge, first study explores role an area for improved using small organic

Language: Английский

Citations

0