2021
DOI: 10.1002/cjoc.202100626
|View full text |Cite
|
Sign up to set email alerts
|

A Configurationally Tunable Perylene Bisimide Derivative‐based Fluorescent Film Sensor for the Reliable Detection of Volatile Basic Nitrogen towards Fish Freshness Evaluation

Abstract: Rapid and real-time monitoring of food quality plays critical roles in the food industry and for the general public health. Herein, we specially synthesized a new perylene bisimide (PBI) derivative (PCB-EpE) composed of two PBI units and a rigid o-carborane linker, which was further employed in constructing a conceptual fluorescent film sensor for evaluating fish freshness. Photophysical studies indicate that PCB-EpE displays an open "Z-type" molecular configuration in chloroform and a closed "-type" configur… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

0
15
0

Year Published

2022
2022
2024
2024

Publication Types

Select...
5
1

Relationship

1
5

Authors

Journals

citations
Cited by 12 publications
(15 citation statements)
references
References 50 publications
0
15
0
Order By: Relevance
“…Within the early 100 ps of decay traces, PCBP-EE in MCH displayed obvious spectral change from PBI* to the radical anion (PBI •– ) around 820 nm and radical cation (PBI •+ ) around 610 nm (Figures a and S19). ,, There was a negligible SE feature observed around 630 nm due to the strong overlap between the SE and radical cation (PBI •+ ) peaks . This special spectral shift indicated more effective electronic coupling between PBI units in PCBP-EE compared with the monomeric PBCP in MCH (Figures S10–S19) and PCBP-EE in THF (Figures b).…”
Section: Resultsmentioning
confidence: 62%
See 4 more Smart Citations
“…Within the early 100 ps of decay traces, PCBP-EE in MCH displayed obvious spectral change from PBI* to the radical anion (PBI •– ) around 820 nm and radical cation (PBI •+ ) around 610 nm (Figures a and S19). ,, There was a negligible SE feature observed around 630 nm due to the strong overlap between the SE and radical cation (PBI •+ ) peaks . This special spectral shift indicated more effective electronic coupling between PBI units in PCBP-EE compared with the monomeric PBCP in MCH (Figures S10–S19) and PCBP-EE in THF (Figures b).…”
Section: Resultsmentioning
confidence: 62%
“…PCBP-EPE and PCBP-EE resembled the optical characteristics of monomeric PBIT except for the emission shoulders around 600 nm, indicating main origination from the conjugated PBI skeletons. We know that PBIs tend to aggregate strongly influenced by the solvents, thanks to the π–π stacking and the intensity changes of vibronic features that are indicative of their strong exciton coupling. , As reported by previous works, the spectral changes upon aggregation of PBIs were commonly described in terms of exciton-vibrational coupling, where the electronic transition is coupled to the vibrational modes of the chromophores. Würthner et al also pointed out that the exciton coupling was mainly assigned to long-range Coulomb coupling between the transition dipole moments of the chromophores leading to H- or J-type coupling with positive or negative exciton coupling energy, respectively . Intensity reversal of the A 0‑0 and A 0‑1 absorption bands was observed for PCBP-EPE and PCBP-EE with respect to PBIT (Figure b), which should arise from the interplay of exciton and vibrational coupling.…”
Section: Resultsmentioning
confidence: 85%
See 3 more Smart Citations