Study of the luminescence behavior of seven quinolones on a paper substrate

Li, Jianqing; Shuang, Shaomin; Dong, Chuan

doi:10.1016/j.aca.2005.04.053

Cited by 9 publications

(5 citation statements)

References 32 publications

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“…Levofloxacin is a commercial fluorinated quinolone derivative that exhibits green phosphorescence because of the presence of a nitrogen heterocyclic structure. [ 11 ] The CDs were synthesized by the hydrothermal treatment of levofloxacin, which is expected to preserve the phosphorescence property of levofloxacin. In brief, levofloxacin (0.1 g) and deionized water (40 mL) were heated at 200 °C for 6 h in an autoclave and then cooled to room temperature.…”

Section: Figurementioning

confidence: 99%

Time‐Dependent Phosphorescence Colors from Carbon Dots for Advanced Dynamic Information Encryption

et al. 2021

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The development of phosphorescent materials with time‐dependent phosphorescence colors (TDPCs) is of considerable interest for application in advanced dynamic information encryption. In this study, TDPC is realized in carbon dots (CDs) synthesized by the one‐pot hydrothermal treatment of levofloxacin. CD ink printed on paper (CD@paper) exhibits a change in phosphorescence color from orange to green, 1 s after irradiation with 395 nm light. However, when irradiated with wavelengths shorter or longer than 395 nm, the CD@paper exhibits only green or red phosphorescence, respectively. The red and green phosphorescence originates from the low‐energy surface oxide triplet state and high‐energy N‐related triplet state, respectively. When irradiated with a suitable light energy (around 395 nm wavelength), the two phosphorescent centers can be simultaneously activated, emitting red and green phosphorescence with different decay rates. The red and green phosphorescence merge into an orange phosphorescence initially, exhibiting the TDPC phenomenon. Based on the unusual phosphorescent properties of the CDs, a kind of multilevel, dynamic phosphorescence colored 3D code is designed for advanced dynamic information encryption.

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Section: Figurementioning

confidence: 99%

Time‐Dependent Phosphorescence Colors from Carbon Dots for Advanced Dynamic Information Encryption

et al. 2021

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“…[11] Thereby, discrepancies described in the literature for the ET of FQs can be understood considering that changes of medium polarity or proticity as well as the temperature considerably modify their ET values. [11,[14][15][16][17][18][19][20][21] Moreover, concentration changes of the amphoteric compounds also produces ET changes do to their self-associations in aqueous medium.…”

Section: Discussionmentioning

confidence: 99%

“…[11][12][13] Nev-ertheless, there are relevant discrepancies in the literature about the energies of 3 FQs using this technique as well as by theoretical methods or analysing energy transfer reactions in laser flash photolysis studies. [11,[14][15][16][17][18][19][20][21] With this background, low-temperature phosphorescence measurements were performed with FQs (CPX, NFX, PFX, ENX, OFX) and other structurally simplest quinolone derivatives such as NLA, pipemidic and piromicic acids (PPA, PRA respectively, see structures in Chart 1) to explore emission changes due to their expected self-associations. Moreover, it was also tried to shed some light on the relevant discrepancies about the energies of 3 FQs, [11,[14][15][16][17][18][19][20][21] which are crucial for the understanding of the photomutagenic properties associated with these drugs.…”

Section: Introductionmentioning

confidence: 99%

“…[11,[14][15][16][17][18][19][20][21] With this background, low-temperature phosphorescence measurements were performed with FQs (CPX, NFX, PFX, ENX, OFX) and other structurally simplest quinolone derivatives such as NLA, pipemidic and piromicic acids (PPA, PRA respectively, see structures in Chart 1) to explore emission changes due to their expected self-associations. Moreover, it was also tried to shed some light on the relevant discrepancies about the energies of 3 FQs, [11,[14][15][16][17][18][19][20][21] which are crucial for the understanding of the photomutagenic properties associated with these drugs. [22][23] For those purpose, the quinolone derivatives were analysed using low-temperature phosphorescence at several concentrations in different media.…”

Section: Introductionmentioning

confidence: 99%

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Assessing physical properties of amphoteric fluoroquinolones using phosphorescence spectroscopy

Soldevila

Boscá

2020

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…Several groups have engaged in modulating and promoting the afterglow performance of FQs. For example, Aucélio’s and Dong’s groups reported the promotion RTP of FQs through coordination with Th (IV) and Cd (II), respectively. , Qu’s group modulated the RTP properties of levofloxacin by processing it into carbon dots through hydrothermal treatment . However, these strategies suffered from dependence on heavy/toxic metal ions or complicated synthesis processes, which were not suitable for developing chemical assays.…”

Section: Introductionmentioning

confidence: 99%

Host–Guest Doping Modulated Afterglow Emission of Fluoroquinolones for Their Separation-Free Detection and Discrimination

Shen,

Shi,

Yin

et al. 2024

Anal. Chem.

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Detection and discrimination of fluoroquinolones (FQs) are crucial for food safety but remain a formidable challenge due to their minor differences in molecular structures and the serious interferences from food matrices. Herein, we propose an afterglow assay for the detection and discrimination of FQs through modulating their room-temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) properties by a host−guest doping strategy. FQs were doped into the boric acid host, forming boronic anhydride structures and hydrogen bonds, which prompted the RTP and TADF performance of FQs by stabilizing their excited states, preventing triplet exciton quenching, and reducing the energy gap between singlet and triplet states. The FQs can be quantitatively detected through monitoring the afterglow intensity of host−guest systems, as low as 0.25 μg/mL. The differences in the afterglow intensity and emission lifetime allowed accurate discrimination of 11 types of FQs through pattern recognition methods. Aided by the delayed signal detection model of afterglow emission, the background signal and the interferences from food matrices were effectively eliminated, which endow the detection and discrimination of mixed FQs in commercial meat samples, without multiple-step separation processes.

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Study of the luminescence behavior of seven quinolones on a paper substrate

Cited by 9 publications

References 32 publications

Time‐Dependent Phosphorescence Colors from Carbon Dots for Advanced Dynamic Information Encryption

Time‐Dependent Phosphorescence Colors from Carbon Dots for Advanced Dynamic Information Encryption

Assessing physical properties of amphoteric fluoroquinolones using phosphorescence spectroscopy

Host–Guest Doping Modulated Afterglow Emission of Fluoroquinolones for Their Separation-Free Detection and Discrimination

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