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Home Sensors Optochemotronic Sensor for the Detection of Liquid Analytes

Optochemotronic Sensor for the Detection of Liquid Analytes


A liquid-phase electro-chemiluminescence phenomenon (ECL) allows creation of an optochemotronic sensor for the detection of analytes in bio liquids. The ECL phenomenon originates in the ordered thin/monomolecular film of the organic luminescer located on the electrode/solution interface.

Innovative Aspect and Main Advantages

Dr. Rozhit'skii's team designed a “Lab-on-a-chip” optochemotronic sensor and manufactured it by deposition of electro-chemiluminescent reactants onto the smooth surface of metal or optically-transparent semiconductor electrode using the Langmuir-Blodgett technology. The optochemotronic sensor enables the following improvements:

  • wider assortment of compounds that can be detected in solutions;
  • advanced selectivity and improved sensitivity approaching “molecular recognition”;
  • significant reduction in use of the most expensive component — electro-chemiluminescer, due to the sensor’s miniature dimensions (micro or nano) and reusability;
  • improved interference immunity and high processing speed due to the direct long-range transmission of the optical analytical signal by optical guides.

Areas of Application

Optochemotronic sensors are expected to work in a variety of applications to detect analytes in biological liquids (blood, urine, milk, etc.) and organic toxic impurities in water ecosystems.

Fig. 1 Schematic structure of
a/ optochemotronic sensor with working electrode modified
with Langmuir-Blodgett film
(1 — working solution, 2 — LB film on a working electrode,
3 — auxiliary electrode, 4 — working electrode contact layer,
5,6 — gasket) and
b/ working electrode (1 — glass substrate,
2 — ITO conducting layer,
3 — electroconductive organic subphase,
4 — LB layer doped with active molecules)

Contact Details

Mykola Rozhitskii, Professor, Dr. of Phys.-Math Sci.
Address: Ukraine, 61166, Kharkiv, 14, Lenin Ave.
Institute: Kharkiv National University of Radio Electronics, Biomedical Electronics Dep., Laboratory of Analytical Optochemotronics
Phone: +380 57 7020-369
Fax: +380 57 7020-107
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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