Light Conversion by Electrochemiluminescence at Semiconductor Surfaces

Accounts of Chemical Research, Год журнала: 2024, Номер 57(15), С. 2144 - 2153

Опубликована: Июль 17, 2024

ConspectusElectrochemiluminescence (ECL) is the electrochemical generation of light. It involves an interfacial charge transfer that produces excited state a luminophore at electrode surface. ECL powerful readout method widely employed for immunoassays and clinical diagnostics progressively evolving into microscopy technique. On other hand, photoelectrochemistry illuminated semiconductors field research deals with photogenerated carriers solid-liquid interface. This concept offers several advantages such as considerable lowering onset potential required triggering reaction well light addressable chemistry, via spatial confinement redox reactions locally semiconductor electrodes. The combination termed photoinduced (PECL). through minority solid/liquid PECL results in conversion incident photons (λ

Язык: Английский

Bright and Stable Electrochemiluminescence by Heterobimetallic Ir^III‐M^I (M^I = Cu^I, Au^I) Complexes

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract Ionic transition metal complexes (iTMCs) often suffer from low photoluminescence quantum yield, especially in the red to near‐infrared spectral region. Rational molecular design strategies unlock recovering emission features efficiently. A potential solution is offered by bimetallic complexes, which are rapidly emerging as a valid and attractive class of emitters. In this work, yet unexplored electrochemiluminescence (ECL) properties series heterobimetallic general structure Ir III ‐M I investigated, where formally neutral cyclometalated iridium complex provides efficient photo‐ electro‐active Whereas bulky M (gold or copper) metalloligand increases structural rigidity chemical stability architecture while enabling larger values for radiative rate constant. The shows highly ECL at λ em , max = 600 nm, stable wider range applied potential. activation triggered 0.45–0.65 V, ca. 0.3–0.5 V lower than that tris ‐(2,2′‐bipyridyl) ruthenium(II) complex, [Ru(bpy) 3 ] 2+ . Remarkably, yield relative up six‐fold higher, thus positioning new iTMCs amongst brightest ECL‐active emitters date possibly offering platform develop novel even more probes biosensing bioimaging applications.

Язык: Английский

Optochiral Metal-Insulator-Semiconductor (MIS) Electrodes

ACS Applied Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025