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Product Code M2177B1-250mg
Price £300 ex. VAT

DCJTB, one of the most promising dopant materials

Widely used in red and white OLEDs

DCJTB, a dicyanomethylene-4H-pyran (DCM) derivative, is one of the most promising dopant materials. It has been widely used in red and white OLEDs.

With four methyl bulky substituents on the julolidine moiety, and tert-butyl group on the pyran moiety of DCM backbone stucture, DCJTB can efficiently prevent concentration quenching between the emitting materials, which leads to improved device electroluminescence efficiencies.

DCJTB has also been used as an interface material between the dye and acceptor in small molecule organic heterojunction solar cells, retarding the charge recombinations between the donor and the acceptor.

General Information

CAS number 200052-70-6
Full name 4-(Dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran
Chemical formula C30H35N3O
Molecular weight 453.62 g/mol
Absorption* λmax 502 nm in THF
Fluorescence λmax 602 nm in THF
HOMO/LUMO HOMO = 5.4 eV, LUMO = 3.2 eV [1]
  • 4-(Dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran
  • 2-tert-Butyl-4-(dicyanomethylene)-6-[2-(1,1,7,7-tetramethyljulolidin-9-yl)vinyl]-4H-pyran
Classification / Family Red dopant materials, OLED red emitters, TADF materials.

* Measurable with an optical spectrometer, see our spectrometer application notes.

Product Details

Purity Unsublimed > 98.0% (HPLC)
Melting point n/a
Appearance Deep red crystals/powder

Chemical Structure

Chemical structure of DCJTB
Chemical structure of DCJTB

Device Structure(s)

Device structure ITO/MoO3 (3 nm)/NPB (20 nm)/TCTA (8 nm)/TCTA:3P-T2T (1:1): 1 wt% DCJTB (15 nm)/3P-T2T (45 nm)/LiF (1 nm)/Al [1]
Colour Red red light emitting device
Max. Power Efficiency 21.5 lm W−1
Max. Current Efficiency 22.7 cd/A
Max. EQE 10.15%
Device structure ITO/MoO3 (3 nm)/mCBP (20 nm)/mCBP:PO-T2T:0.4 wt.% DCJTB (20 nm)/PO-T2T (40 nm)/LiF (0.8 nm)/Al [2]
Colour White white light emitting device
Max. Power Efficiency 10.39 lm W−1
Max. Current Efficiency 13.25 cd/A
Max. EQE  6.16%
Device structure ITO/HAT-CN (10 nm)/TAPC (55 nm)/TCTA (10 nm)/TCTA:B4PyMPM:2 wt% 4CzIPN:0.5 wt% DCJTB (30 nm)/B4PYMPM (55 nm)/Liq (2 nm)/Al (110 nm) [3]
Colour Orange orange light emitting device
Max. Power Efficiency 26.3 lm W−1
Max. Current Efficiency 23.0 cd/A
Max. EQE  12.3%
Device structure ITO/PEDOT:PSS (35 nm)/26DCzPPy:TCTA:10 wt % DMAC-TRZ/1 wt % DCJTB (45 nm)/TmPyPB (50 nm)/CsF(1 nm)/Al [2]
Colour White white light emitting device
Max. Power Efficiency 10.3 lm W−1
Max. Current Efficiency 16.4 cd/A
Max. EQE  6.58%
*For chemical structure information, please refer to the cited references


Grade Order Code Quantity Price
Unsublimed (>98% purity) M2177B1 250 mg £300
Unsublimed (>98% purity) M2177B1 500 mg £480
Unsublimed (>98% purity) M2177B1 1 g £760

MSDS Documentation


Literature and Reviews

  1. Highly efficient red OLEDs using DCJTB as the dopant and delayed fluorescent exciplex as the host, B. Zhao et al., Sci. Rep., 5, 10697 (2015); DOI: 10.1038/srep10697.
  2. Simple structured hybrid WOLEDs based on incomplete energy transfer mechanism: from blue exciplex to orange dopant, T. Zhang et al., Sci. Rep., 5, 10234 (2015); DOI: 10.1038/srep10234.
  3. Triplet exciton harvesting by multi-process energy transfer in fluorescent organic light-emitting diodes, D. Li et al., J. Mater. Chem. C, 7, 977 (2019); DOI: 10.1039/c8tc05141k.
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