Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: electrochemiluminescence

Sortuj według:

Ogranicz wyniki do:

Apparatus “Spark” for luminescent and electrochemiluminescent measurements

Snizhko D. V., Bani-Khaled G., Muzyka K., Xu G.

Przegląd Elektrotechniczny

2018

R. 94, nr 6

38--42

The article is devoted to the development of the apparatus “Spark” for integration a photodetector with a current output in a measurement system. Developed apparatus “Spark” includes a current-to-voltage converter, an output filter, and a source of a high voltage, that are sufficient to combine a photomultiplier tube with a different analytical instrumentation. Use of apparatus “Spark” with electrochemical station CHI 800C CH Instrument and photomultiplier tube CR-105 by Hamamatsu Photonics is shown by over an electrochemiluminescent assay of a test solution.

W artykule opisano urządzenie “Spark” przeznaczone do pomiarów luminescencji. Urządzenie wyposażone jest w fotodetektor przetwornik prąd-napię, filtr wyjściowy i źródło wysokiego napięcia do współpracy z fotopowielaczem.

Elektrogenerowana chemiluminescencja kompleksów lantanowców (III) na elektrodzie Al/Al_20_3

Staninski K., Lis S.

Wiadomości Chemiczne

2007

[Z] 61, 3-4

279-296

The aim of this review is to evaluate the electrochemiluminescence (ECL), both, as a method of light emission in certain types of lanthanide complexes by generating species capable of forming excited states, and for its potential use in analytical applications. The electrogenerated ECL in aqueous electrolyte solutions containing organic compounds having structural fragments such as carbonyl groups and conjugated double bonds and an oxide covered aluminum electrode doped with Ln(III) is reported. This specific electrogenerated luminescence can be achieved by producing highly oxidizing and reducing species as: hydrated electrons, hydroxyl and sulfate radicals. Such strong reactants efficiently excite the complexed lanthanide(III) ions [mainly Tb(III) and Dy(III)] by ligand to metal energy transfer, LMET. The experimental setup for ECL measurements (constructed in the Department of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University) is introduced. The ECL generated with aluminium electrodes having chelated lanthanide(III) complexes-doped in their thin oxide coatings is studied following cathodic pulse polarization. The ECL mechanisms induced by hot-electrons leading to the production of light at or near the electrode surface by generating species capable of forming excited states of organic ligands are described.