High-performance photothermal GA-MoSe2 nanosheet for rapid and sensitive point-of-care detection of C-reactive protein
Year: 2026
Type: article
Abstract: In the aftermath of the global COVID-19 pandemic, there is a critical need to develop rapid and sensitive diagnostic devices for point-of-care testing (POCT). Despite the numerous benefits of paper-based colorimetric lateral flow immunoassays (LFAs) in rapid onsite diagnosis, their sensitivity and quantitative analysis capability are limited. To overcome the limitations of the current assays, we developed a new rapid diagnostic method that utilizes glycyrrhizic acid-molybdenum diselenide (GA-MoSe 2 ), a two-dimensional photothermal nanomaterial, for the sensitive detection of C-reactive protein (CRP). GA-MoSe 2 was synthesized via a facile liquid exfoliation method using glycyrrhizic acid as a natural surfactant in distilled water. The GA-MoSe 2 nanosheet presented a notable photothermal effect, exhibiting an excellent photothermal conversion efficiency of 64.6% and high photothermal stability, and was successfully used as a photothermal sensing probe in an LFA. The GA-MoSe 2 -based photothermal LFA demonstrated a high analytical performance in CRP detection in the concentration range of 5 to 1000 ng mL − 1 , exhibiting a limit of detection of 0.93 ng mL − 1 and up to 7-fold signal enhancement relative to those of traditional gold nanoparticle-based colorimetric LFAs. Moreover, the developed sensor showed high selectivity to CRP even in the presence of interfering substances in serum, excellent reproducibility, and long-term stability over 3 weeks of storage. The GA-MoSe 2 -based biosensor successfully detected CRP in human serum samples, showing recoveries ranging from 90 to 105% and demonstrating significant capability and feasibility for point-of-care testing. GA–MoSe₂ nanosheets synthesized via aqueous liquid exfoliation exhibit outstanding photothermal efficiency and stability and were successfully integrated as a photothermal probe into a lateral flow immunoassay for sensitive C-reactive protein detection.
Source: Journal of Nanobiotechnology
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,790
OpenAlex ID: W7124434335