Comprehensive analytical chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Language: Английский
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 6960 - 6991
Published: Jan. 1, 2024
This review meticulously traces the development of film-based fluorescent sensors, spotlighting key advancements in molecular design and film structural engineering.
Language: Английский
Citations
22
Aggregate, Journal Year: 2024, Volume and Issue: unknown
Published: July 3, 2024
Abstract This study presents a novel boron‐difluoride complex‐based fluorescent nanofilm sensor capable of detecting sarin vapors in the environment by reporting an output fluorescence signal. The sensor's evaluation demonstrated exceptionally low detection limit for vapor, even presence various interfering gases, with theoretical and practical limits 0.7 1 ppb, respectively. featured rapid response time (less than 2 s), broad linear range (1 ppb–1000 ppm), superior selectivity vapor over group analytes, outperforming existing sensors. Mechanistic indicates that heightened sensitivity to is due robust affinity nitrogen atoms within core BODIQ unit sarin. Additionally, tetraphenylethylene structure steric hindrance effectively inhibits tight packing derivatives, forms numerous microporous structures self‐assembled nanofilm, which are beneficial mass transfer, enhancing efficiency vapors. Furthermore, we have achieved differentiation sarin, diethyl chlorophosphate, HCl through analysis sensing kinetic. opens new avenues sustainable, low‐cost, environment‐friendly portable devices, as well environmental monitoring tracking applications.
Language: Английский
Citations
9
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154274 - 154274
Published: July 25, 2024
Language: Английский
Citations
5
ACS Sensors, Journal Year: 2024, Volume and Issue: 9(9), P. 4608 - 4616
Published: Aug. 8, 2024
Efficient and reliable technologies for the on-site detection of illicit drugs are important in drug-facilitated crime investigations. However, development such is challenging. Based on synthetic optimization, introducing a boron ester functional group to two furanic indicators endows stimulus-responsive properties synergistically. The ring-opening reaction presence amine-containing generated well-known donor-acceptor Stenhouse adducts, accompanied by strong color changes. A small-size lightweight laminated sensor was integrated based outstanding ratiometric variations active indicators. prototype platform fabricated equipped with circuit control, mini pump, signal processing system. user-friendly efficient screening drugs, including phenethylamines, amphetamines, cathinones, tryptamines liquid states were conducted. response linear concentration range 2.1-10.6 μg·mL
Language: Английский
Citations
5
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14623 - 14633
Published: Feb. 21, 2025
Photoluminescence efficiencies of covalent organic frameworks (COFs) are significantly restricted by electron delocalization and charge transfer among the conjugated skeletons. Two nanofilms using tetraphenylethylene benzo[c][1,2,5]thiadiazole as building blocks were facilely prepared via an interfacially confined condensation strategy. The distinct dipole moment orientations imine linkages involved in π-delocalization donor-acceptor systems diversely. They also played critical roles affecting fluorescence turn-on sensing obtained for gaseous trifluoroacetic acid (TFA). joint donor-C═N-acceptor sequence nanofilm #2 resulted relatively stronger originally than that #1, featuring disturbed donor-N═C-acceptor sequence. While after blowing trace TFA, latter #1 possessed prominent enhancement obvious color visualization. Comparative transient absorption observations theoretical calculations elucidated effective manipulation intramolecular (ICT) imine-linked functional With help a laminated fluorescent sensor, compact platform was further integrated optimized #1. It exhibited good selectivity, excellent reversibility (≥50 recycles), extraordinary detection limit (∼0.1 ppt), rapid recovery process to TFA. Our findings provide valuable optimizations π-linkages COFs reliable film sensors monitoring toxic hazardous gases.
Language: Английский
Citations
0
ACS Omega, Journal Year: 2025, Volume and Issue: unknown
Published: April 4, 2025
Due to the structural diversity and rapid iteration of synthetic cannabinoids (SCs), their detection presents a challenging issue. Here, based on structure physicochemical property analysis typical SC, MDMB-CHMICA, four fluorescent probes were designed by introducing recognition groups fluorescence regulation carbazole. It is found that electron-withdrawing conjugation-extending effect nitro group reduced LUMO energy level thereby narrowed HOMO-LUMO gap, resulting in red-shift emission. As result, intramolecular charge transfer mechanism probe helps lead stronger with greater distance. Two show multiple noncovalent interactions MDMB-CHMICA efficient quenching sensing through photoinduced electron transfer. This study expected shed light exploration from analytes' nature would be helpful for new psychoactive substance detection.
Language: Английский
Citations
0
Laser & Optoelectronics Progress, Journal Year: 2025, Volume and Issue: 62(7), P. 0700002 - 0700002
Published: Jan. 1, 2025
Citations
0
Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: April 29, 2025
Molecular recognition has traditionally been focused on ground-state interactions. However, leveraging photoenergy to access excited-state molecular recognition, which may enable enhanced sensitivity or selectivity that is unattainable in the ground state, remains underexplored. In this study, we demonstrate a novel photoinduced mechanism using self-assembled crystalline microribbons composed of donor-acceptor (D-A) molecule with twisted backbone for ultratrace phenol vapor detection. We confirm proton transfer occurs from C═N group pyridine moiety D-A system, generating protonated and phenoxide ion triggers fluorescence quenching. This proton-transfer-mediated endows exceptional toward vapor, achieving limit detection (LOD) 0.6 parts per trillion (ppt). Our findings reveal harnessing light energy drive opens new avenues advancing sensing technologies.
Language: Английский
Citations
0
Accounts of Materials Research, Journal Year: 2025, Volume and Issue: unknown
Published: May 1, 2025
Language: Английский
Citations
0
The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(36), P. 9247 - 9254
Published: Sept. 3, 2024
Rationally designed molecules with versatile conformations are ideal candidates for creating challenging single component-based multicolor emissive materials. Herein, a new strategy is presented by introducing C–C double bond in an o-carborane derivative. Compared to linear connection using triple (CbPyY), (CbPyE) exhibited zigzag structure and unique fluorescence behavior. Yellow, yellowish orange, red crystals or films of CbPyE can be obtained, while only orange ones CbPyY were achieved under the same condition. Single crystal XRD theoretical calculation studies revealed brings asymmetry one arm CbPyE, which causes conformation diversity leads emission. Interestingly, different emissions showed responses acetone vapor; yellow much higher sensitivity faster response than other two. It believed that prepared materials proposed would contribute future advances single-fluorophore-based
Language: Английский
Citations
2