907073
PO-T2T
>=99% (HPLC), Mw 909.8 g/mol,
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
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About This Item
Empirical Formula (Hill Notation):
C57H42N3O3P3
CAS Number:
Molecular Weight:
909.88
MDL number:
UNSPSC Code:
12352103
NACRES:
NA.23
Product Name
PO-T2T, >=99% (HPLC),
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
SMILES string
[P](=O)(c3cc(ccc3)c4nc(nc(n4)c8cc(ccc8)[P](=O)(c%10ccccc%10)c9ccccc9)c5cc(ccc5)[P](=O)(c7ccccc7)c6ccccc6)(c2ccccc2)c1ccccc1
InChI key
RDVGOMWIWCMKAM-UHFFFAOYSA-N
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.
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.
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
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Articles
Professors Tokito and Takeda share design principles and optimization protocols for organic electronic devices, focusing on flexibility and low cost.
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
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
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)