Perovskite Quantum Dots Supplier - Alfa Chemistry

Quantum Dot Electrochemical Sensor Detects Bladder Cancer Marker Services


Quantum Dot Electrochemical Sensor Detects Bladder Cancer Marker Services

Bladder cancer is the most common malignant tumor in the urinary system. The early diagnosis methods of bladder cancer mainly include transurethral cystoscopy, urine exfoliated cytology, biochemical examination of urine tumor markers, and clinical medical imaging examination. Alfa Chemistry is currently cooperating with the advanced quantum dot research team to develop a new technology. Using lead sulfide colloidal quantum dots as the modified material, a planar chemically modified electrode (CME) has been prepared, which is based on a colloidal quantum dot surface ligand replacement strategy. The colloidal quantum dot electrical labeling of the cytokeratin CK18 antibody was used to transduce the specific binding reaction of the CK18 protein antigen antibody to the sensor electrical signal for detection.


The electrochemical sensor fused with the principle of immunological detection can recognize the specific binding reaction of antigen and antibody and convert it into electrical signals, so as to realize the rapid detection of relevant disease markers in liquid samples. Based on chemically modified electrodes, an electrochemical sensor for detecting cytokeratin 18 (CK18), a marker for bladder cancer, is constructed. The electrode surface is modified with semiconductor colloidal quantum dots, and the significant surface effect, size effect and unique quantum effect of quantum dots are used to improve the enrichment and signal transduction of biomolecules on the surface of the working electrode. The interface between lead sulfide (PbS) colloidal quantum dots and carbon electrodes is stable and has good charge transfer ability. The electrode is prepared by antibody coating and sealing treatment on the surface, combined with differential pulse voltammetry (DPV) that can significantly reduce background current. Electrochemical performance test.


Alfa Chemistry keeps pace with the times and brings you very beneficial services to help you solve the problems encountered in the various research processes. At present, our colloidal quantum dots can be used in the detection of bladder cancer. The specific services are as follows:

  • Customization of Colloidal Quantum Dots
  • Optimization and Solutions of Quantum Dots
  • Provision of Data


The colloidal quantum dot immunoassay technology can have a good level of detection in the development of low-cost, high-throughput clinical diagnostic equipment, point-of-care testing (POCT), and home testing.

What we can provide:

  • DPV current-voltage curve
  • EIS characterization
  • Sensor specific evaluation

Our data is comprehensive, and we can also provide different data results according to your needs

Our advantage

  • Short time
  • We have experienced technical personnel engaged in quantum dot products and services, can customize and synthesize lead-free perovskite quantum dots for you efficiently.

  • Complete instrument platform
  • Reliable researchers to ensure the standardization of experimental practices.

  • Cheap price
  • We provide customers with the most comprehensive services at the most favorable price, and help customers save scientific research funds reasonably.

  • One-stop technical service
  • We provide one-stop services such as sample processing, electron microscope observation, and result analysis.

Service process

  • Communicate with us and email us
  • Propose the required quantum dot or solution
  • Performance test
  • Feedback of test report and product solution to customer

Standard Service Process

Our customer service representatives are enthusiastic and trustworthy 24 hours a day, Monday to Friday. Please do not hesitate to contact us for more information or to discuss in detail, if you are interested in our services.

* It should be noted that our service is only used for research, not for clinical use.


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