Like Ir(ppy)3, [2-(4-methyl-5-phenyl-2-pyridinyl-κN)phenyl-κC]bis[2-(2-pyridinyl-κN)phenyl-κC] Iridium, known as Ir(ppy)2(bpmp), is a phosphorescent green emitter. It is believed that the introduction of the methyl group at para position to the pyridine nitrogen can provide a twist and electron-donating effect. This raises the LUMO energy level of the complex and the triplet energy level, resulting in a blue shift in the emission.

General Information

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CAS number	1215692-34-4
Chemical formula	C40H30IrN3
Molecular weight	744.90 g/mol
Absorption	λmax = 212 nm, 244 nm, 285 nm
Fluorescence	λem = 518.6 nm
HOMO/LUMO	No data available
Synonyms	[2-(4-methyl-5-phenyl-2-pyridinyl-κN)phenyl-κC]bis[2-(2-pyridinyl-κN)phenyl-κC] Iridium, Irppy2bpmp
Classification / Family	Iridium complex, Coordination compound, Phosphorescent green emitter, OLEDs, Organic electronics

Product Details

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Purity	>99% (sublimed)*
Melting point / Thermal analysis	Thermal Gravimetric Analysis (TGA): 423.9 °C (5% weight loss Differential Scanning Calorimetry (DSC): 407.4 °C
Colour	Yellow powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.

Chemical Structure

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Chemical Structure of [2-(4-methyl-5-phenyl-2-pyridinyl-κN)phenyl-κC]bis[2-(2-pyridinyl-κN)phenyl-κC] Iridium, Ir(ppy)2(bpmp), CAS 1215692-34-4

Device Structure(s)

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Device structure	ITO/E1* (100 nm)/NPD (30 nm)/H2*:Ir(ppy)2(bpmp) (10 wt%, 30 nm)/H2 (10 nm)/Alq3 (40 nm)/LiF/Al [1]
Colour	Green
EQE@1000 cd/m2	17.2%
Current efficiency@1000 cd/m2	62.9 cd/A
Power Efficiency@1000 cd/m2	39.5 lm W−1

*For chemical structure information please refer to the cited references.

Characterisation

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HPLC trace of Ir(ppy)2(bpmp)

No.	Ret. Time (mins)	Height (mAU)	Area (mAU*min)	Rel. Area (%)	Type
1	5.07	0.013	0.002	0.0017	BMB*
2	5.58	0.463	0.086	0.0626	BMB*
3	7.28	0.015	0.004	0.0031	BMB*
4	8.92	508.916	136.024	99.6307	BMb*
5	10.27	0.037	0.006	0.0041	bMb*
6	10.65	0.013	0.002	0.0014	bMB*
7	10.98	0.012	0.002	0.0013	BMb*
8	11.37	0.030	0.007	0.0054	bMB*
9	12.12	0.013	0.004	0.0027	BMB*
10	12.77	0.019	0.006	0.0046	BMB*
11	14.15	0.065	0.024	0.0179	BMB*
12	15.63	0.837	0.361	0.2643	BMB*
Total:		510.430	136.528	100.00

Table of results for HPLC trace of Ir(ppy)2(bpmp)UV-Vis absorption and photoluminescence spectra of Ir(ppy)2(bpmp)DSC and TGA traces of Ir(ppy)2(bpmp)