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907073

Sigma-Aldrich

PO-T2T, >=99% (HPLC)

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Synonym(s):
(1,3,5-Triazine-2,4,6-triyl)tris(benzene-3,1-diyl)tris(diphenylphosphine oxide), 2,4,6-Tris[3-(diphenylphosphinyl)phenyl]-1,3,5-triazine
Empirical Formula (Hill Notation):
C57H42N3O3P3
CAS Number:
Molecular Weight:
909.88

grade

sublimed grade (>99% (HPLC))

description

PL-295, 379 nm (in CH2Cl2)

form

solid

mol wt

Mw 909.8 g/mol

color

white

λmax

272 nm in dichloromethane

orbital energy

HOMO -6.8 eV 
LUMO -2.8 eV 

storage temp.

15-25°C

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This Item
8.08614440825PHR2801
vibrant-m

907073

PO-T2T, >=99% (HPLC)

vibrant-m

8.08614

2,4,6-Triamino-1,3,5-triazine

vibrant-m

PHR2801

Ethylhexyl Triazone

description

PL-295, 379 nm (in CH2Cl2)

description

-

description

-

description

Pharmaceutical Secondary Standard; Certified Reference Material

form

solid

form

powder

form

liquid

form

powder

mol wt

Mw 909.8 g/mol

mol wt

-

mol wt

-

mol wt

-

color

white

color

-

color

-

color

-

λmax

272 nm in dichloromethane

λmax

-

λmax

-

λmax

-

Application

Device configuration:
ITO/MoO3 (3 nm)/ TAPC (35 nm)/CBP:TTM-3NCz (3.0 wt%; (40 nm) and CBP:TTM3PCz (3.0 wt%; 25 nm)/B3PYMPM (10 nm)/PO-T2T (70 nm)/LiF (0.8 nm)/Al (100 nm).

The first Tandem, All-exciplex-based WOLED was constructed using PO-T2T for a device structure configured by two parallel blend layers of mCP/PO-T2T and DTAF/PO-T2T, generating blue and yellow exciplex emission, respectively. The resulting device demonstrates for the first time a tandem, all-exciplex-based white-light OLED (WOLED) with excellent efficiencies ηext: 11.6%, ηc: 27.7 cd/A, and ηp: 15.8 ml/W with CIE(0.29, 0.35) and CRI 70.6 that are nearly independent of EL intensity. The tandem architecture and blend-layer donor/acceptor (1:1) configuration are two key elements that fully utilize the exciplex delay fluorescence, providing a paragon for the use of low-cost, abundant organic compounds en route to commercial WOLEDs.
PO-T2T is an electron transport/hole blocking material in OLED, or an electron acceptor material in organic electronics.

An efficient action of radical-based OLEDs, whose emission originates from a spin doublet, rather than a singlet or triplet exciton was demonstrated in a study published in Nature.
While the emission process is still spin-allowed in these OLEDs, the efficiency limitations imposed by triplet excitons are circumvented for doublets. Using a luminescent radical emitter, an OLED with maximum external quantum efficiency of 27% at a wavelength of 710nm-the highest reported value for deep-red and infrared LEDs was achieved. In this very efficient OLEDs, selective hole injection into the HOMO and electron injection to the SOMO was achieved imploying TAPC as the hole transport layer, and PO-T2T as the electron transport layer to form the fluorescent doublet excited state with near-unity internal quantum efficiency.

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Yi-Tzu Hung et al.
ACS applied materials & interfaces, 10(40), 34435-34442 (2018-09-18)
Two new nonconjugated linked dicarbazole materials, dCzPSi and dCzPSO2, with high triplet energy were synthesized and characterized. dCzPSi and dCzPSO2 were adopted as unipolar host materials for the green thermally activated delayed fluorescence (TADF) emitter (4CzIPN) to achieve high-efficiency organic
Piotr Pander et al.
ACS applied materials & interfaces, 10(34), 28796-28802 (2018-07-26)
The photophysics of an exciplex state formed between a small molecule and a polymer is investigated in this work. The results obtained with this blend show the strong potential of polymer-small-molecule blends for triplet harvesting in organic light-emitting diodes (OLEDs)
Wen-Yi Hung et al.
Scientific reports, 4, 5161-5161 (2014-06-05)
Exploiting our recently developed bilayer interface methodology, together with a new wide energy-gap, low LUMO acceptor (A) and the designated donor (D) layers, we succeeded in fabricating an exciplex-based organic light-emitting diode (OLED) systematically tuned from blue to red. Further
Tzu-Chieh Lin et al.
Nature communications, 9(1), 3111-3111 (2018-08-08)
The lack of structural information impeded the access of efficient luminescence for the exciplex type thermally activated delayed fluorescence (TADF). We report here the pump-probe Step-Scan Fourier transform infrared spectra of exciplex composed of a carbazole-based electron donor (CN-Cz2) and
Xin Ai et al.
Nature, 563(7732), 536-540 (2018-11-23)
Organic light-emitting diodes (OLEDs)1-5, quantum-dot-based LEDs6-10, perovskite-based LEDs11-13 and micro-LEDs14,15 have been championed to fabricate lightweight and flexible units for next-generation displays and active lighting. Although there are already some high-end commercial products based on OLEDs, costs must decrease whilst maintaining high

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