A novel photothermal sensing probe based on violet phosphorus for sensitive immunochromatographic sensing detection.

ABSTRACT: Photothermal immunochromatographic sensor is an emerging detection technology, and it is important to develop new sensing probes with excellent photothermal performance to improve its detection performance. In the present study, a novel photothermal sensing probe based on violet phosphorus nanosheets with satisfactory photothermal conversion efficiency (31.1 %) was reported for the first time. A photothermal immunochromatographic sensor using the above probe was applied for visual and photothermal detection of diethylstilbestrol. The diethylstilbestrol concentration was inversely proportional to photothermal sensing signal and showed a good linear correlation in the range of 0.75 ∼ 50 μg·L^-1. After optimizing, the visual and photothermal detection limits were 6 μg·L^-1 and 0.56 μg·L^-1, respectively. The recovery rates in tap water, milk and pork samples ranged from 82.2 % to 115.2 %, with a coefficient of variation (CV) ranging from 2.0 % to 10.8 %. This work not only structured a new type of photothermal probe, but also expanded the application range of violet phosphorus.

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC10740082 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature