Journal
JOURNAL OF LUMINESCENCE
Volume 230, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2020.117708
Keywords
Paper-based; NH2-MIL-53(Fe); Dual detection strategy; Chemiluminescence; Fluorescence
Categories
Funding
- Shaanxi Provincial Natural Science Foundation of China [2018JM2002]
- Fundamental Research Funds for the Central Universities [GK201902009, GK201701002]
- Program for Innovative Research Team in Shaanxi Province [2014KCT-28]
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A versatile paper-based immunosensor with dual fluorescence and chemiluminescence detection strategy was developed for sensitive detection of prostate specific antigen (PSA). Through conjugation of NH2-MIL-53(Fe) with detection antibodies, this sensor achieved dual-mode detection of PSA with high sensitivity and accuracy in one detection area. This simple and cost-effective strategy can promote the development and application of MOFs in paper-based immunoassay.
A versatile paper-based immunosensor with dual fluorescence (FL) and chemiluminescence (CL) detection strategy is established for sensitive detection of prostate specific antigen (PSA). A multifunctional and stable NH2-MIL-53(Fe), which shows a strong FL and catalytic capacity for luminol-H2O2 CL system, is conjugated to detection antibodies by simple glutaraldehyde cross-linking method to fabricate the immunosensor. PSA is detected by this dual detection strategy with the detection limits of 0.3 ng/mL for CL and 0.2 ng/mL for FL. The dual-mode detection is achieved by FL and CL methods at one detection area for the first time with high sensitivity and accuracy. This simple, and low-cost detection strategy can expand the development and application of MOFs in paper-based immunoassay.
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