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TPBi

Name: TPBi
Brand: ALDRICH

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Synonym(s):

2,2′,2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)

Empirical Formula (Hill Notation):

C₄₅H₃₀N₆

CAS Number:

192198-85-9

Molecular Weight:

654.76

MDL number:

MFCD08276433

PubChem Substance ID:

329769027

NACRES:

NA.23

Assay

≥99.5% (HPLC)

Quality Level

100

form

powder

mp

272-277 °C

Orbital energy

HOMO 6.2 eV
LUMO 2.7 eV

OLED Device Performance

ITO/MoO₃/NPB/Cz-BTPE/TPBi/LiF/Al (ref 2)

Color: blue
Max. Luminance: 9911 Cd/m²
Max. EQE: 1.9 %
Turn-On Voltage: 4.9 V

ITO/MoO₃/NPB/Ph-BTPE/TPBi/LiF/Al

Color: blue
Max. Luminance: 6497 Cd/m²
Max. EQE: 1.9 %
Turn-On Voltage: 5.3 V

ITO/MoO₃/NPB/isopro-BTPE/TPBi/LiF/Al(ref 2)

Color: blue
Max. Luminance: 1127 Cd/m²
Max. EQE: 1.7 %
Turn-On Voltage: 5.3 V

ITO/MoO₃/NPB/methyl-BTPE/TPBi/LiF/Al (ref 2)

Color: blue
Max. Luminance: 1976 Cd/m²
Max. EQE: 1.3 %
Turn-On Voltage: 5.3 V

SMILES string

C1(C2=NC(C=CC=C3)=C3N2C4=CC=CC=C4)=CC(C5=NC(C=CC=C6)=C6N5C7=CC=CC=C7)=CC(C8=NC(C=CC=C9)=C9N8C%10=CC=CC=C%10)=C1

InChI

1S/C45H30N6/c1-4-16-34(17-5-1)49-40-25-13-10-22-37(40)46-43(49)31-28-32(44-47-38-23-11-14-26-41(38)50(44)35-18-6-2-7-19-35)30-33(29-31)45-48-39-24-12-15-27-42(39)51(45)36-20-8-3-9-21-36/h1-30H

InChI key

GEQBRULPNIVQPP-UHFFFAOYSA-N

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OLED & PLED Materials

General description

TPBi is an organic semiconductor that displays high electron mobility (3.3×10⁻⁵ cm² V⁻¹ s⁻¹) and high glass transition temperature. It is widely used as an electron transport layer(ETL) in QLEDs and OLEDs, which is a cathode buffer layer in organic solar cells.

The increase in power conversion efficiency of the device on the addition of TBPi is attributed to the following reasons:

Preventing exciton from quenching at the acceptor/cathode interface.
Acting as an optical spacer.
Forming a passivating layer.

Application

TPBi can be used to fabricate an electron transport layer for organic-inorganic hybrid perovskite LEDs.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Study on Electron Transport Characterization in TPBi Thin Films and OLED Application

Yanping Wang, et al.

The Journal of Physical Chemistry C, 125, 16753-16758 (2021)

Semi-transparent organic-inorganic hybrid perovskite light-emitting diodes fabricated under high relative humidity

Taejun Kim, et al.

Solid-state electronics, 165, 107749-107749 (2020)

Efficient blue organic light-emitting diodes employing thermally activated delayed fluorescence

Qisheng Z, et al.

Nature Photonics, 8, 326-332 (2014)

Organic photovoltaic cells based on TPBi as a cathode buffer layer

Junsheng Yu, et al.

Solar Energy Materials and Solar Cells, 95, 664-668 (2011)

Largely blue-shifted emission through minor structural modifications: molecular design, synthesis, aggregation-induced emission and deep-blue OLED application

Jing H, et al.

Chemical Communications (Cambridge, England), 50, 2136-2138 (2014)

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Aggregation-induced Emission Luminogens for Non-doped Organic Light-emitting Diodes

Organic Light-emitting Diodes (OLEDs) are solid-state devices that transform electrical energy into light. OLEDs are considered the next generation technology for high-resolution flexible displays and solid state lighting, attracting intense scientific and industrial interest.