MR-TADF Materials

Multiple Resonance Thermally Activated Delayed Fluorescence (MR-TADF) represents a breakthrough in light-emitting technology, combining the principles of thermally activated delayed fluorescence (TADF) with an innovative molecular design. This advanced mechanism enables MR-TADF materials to achieve up to 100% internal quantum efficiency (IQE) in OLED applications by efficiently utilizing both singlet (S₁) and triplet (T₁) excitons.

The term "Multiple Resonance (MR)" highlights the unique delocalization of electronic states within the molecule. By strategically positioning electron-deficient and electron-rich atoms in an ortho-configuration within the fused aromatic structure, MR-TADF materials achieve spatial separation of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO), while maintaining close energetic alignment. This distinctive design ensures:

Exceptionally Sharp Emission Spectra

Outstanding PLQY

Minimal Stokes Shift (< 30 nm)

Narrow full width at half maximum (FWHM)

Explore our MR-TADF materials, including DABNA-1 and its derivatives, to revolutionize your OLED designs with unmatched efficiency and precision.

Jump to: Browse all MR-TADF Materials | Resources and Support

Browse MR-TADF Materials

3tPAB

CAS 2056877-25-7

From $1,209

t-Bu-ν-DABNA

CAS 2914070-28-1

From $1,378

CzBN

CAS 2170487-27-9

From $689

DABNA-1

CAS 1689552-89-3

From $455

v-DABNA

CAS 2251782-13-3

From $1,157

t-DABNA

CAS 1802003-07-1

From $247

Resources and Support

Multi-Resonance Thermally Activated Delayed Fluorescence (MR-TADF)

Multiple resonance thermally activated delayed fluorescence (MR-TADF) is a light emitting process engaging the same working principle as thermally activated delayed fluorescence (TADF).

Thermally Activated Delayed Fluorescence (TADF)

Thermally Activated Delayed Fluorescence (TADF) is a mechanism by which triplet state electrons can be harvested to generate fluorescence.

Molecular Design Principles of MR-TADF Materials

The design of multiple resonance thermally activated delayed fluorescent (MR-TADF) materials requires careful selection of molecular scaffolds and substituents to achieve the desired photophysical properties i.e. color and color purity.

MR-TADF Applications

MR-TADF emitters show great application potential in high color purity and high-resolution organic light-emitting diode (OLED) displays, and their long emission lifetimes also make them ideal for use in bioimaging probes, fluorescent sensors, and phototheranostics.