54117-40-7

Usage

Abbreviation

ETPN

Physical form

Yellow powder

Usage

Building block in the synthesis of organic electronic materials

Applications

OLED (organic light-emitting diode) and OPV (organic photovoltaic) devices

Derivative of

Carbazole

Key properties

High thermal stability and electron-transporting properties

Importance

Potential applications in the development of advanced electronic devices

Research focus

Properties in the field of organic semiconductors

InChI:InChI=1/C18H13N3/c1-2-21-17-6-4-3-5-15(17)16-10-13(7-8-18(16)21)9-14(11-19)12-20/h3-10H,2H2,1H3

Upstream product

• 7570-45-8 N-ethyl-3-carbazolealdehyde 
• 109-77-3 malononitrile 

Relevant academic research and scientific papers

Three polar derivatives of N-ethylcarbazole: Materials for optical applications

Three polar derivatives of N-ethyl-carbazole were synthesized and tested for non-linear optical (NLO) properties. The results of structural investigations and the evaluation of second-harmonic generation (SHG) in solution for compounds were presented. It was found that molecules of C18H13N3 and C26H19N3S were planar and C18H15N3S was non-planar. Molecules of C18H13N3 and C26H19N3 exhibited herring-bone packing motifs and in C18H15N3S molecules form layers coplanar with (201).

(E) 1-cyano-1-substituted-2-(9-alkyl-carbazol-3-)yl-ethylene and preparation method thereof

The invention discloses a method for preparing (E)1-cyano-1-substituted-2-(9-alkyl-carbazole-3-)yl-ethylene. The preparation method comprises the following steps: adding A mol of choline chloride andB mol of urea into a dry three-neck flask, stirring at 8

2-substituent-3-(9-alkyl-9H-carbazole-3-yl)acrylonitrile compound and production method thereof

The invention discloses a 2-substituent-3-(9-alkyl-9H-carbazole-3-yl)acrylonitrile compound. A production method comprises the steps of sequentially adding 3-formyl-N-substituentcarbazole (A), solid alkali (B) and a water absorbent (C) with formula dosage

Biocompatible Fluorescence Nanoparticles and Uses Thereof

The present invention relates to a novel bipolar aryl vinyl compound, nano-probe particles including the same, a contrast agent using the same, and an imaging method thereof. The novel bipolar aryl vinyl compound can adjust the solid-state fluorescence (S

Synthesis, characterization, absorbance, fluorescence and non linear optical properties of some donor acceptor chromophores

Three carbazole chromophores featuring dicyano, cyano, ethyl acetate and dimethyl acetate groups as an acceptor moiety with a π-conjugated spacer and N-methyl dibenzo[b]pyrole as donor were synthesized by Knovenagel condensation and characterized by IR, 1HNMR, 13CNMR, UV-vis, fluorescence spectroscopy, electrochemistry and theoretical B3LYP/6-311G * level whilst NLO properties and spectroscopic quantities were calculated. Calculations showed remarkable trend with HOMO located on the donor moiety and LUMO on the acceptors dicyano methylene, cyano, ethyl acetate methylene and dimethyl acetate methylene. In agreement with the calculations, solvatochromic, behavior intramolecular charge transfer band was observed in the visible region.

Molecular rotors as fluorescent viscosity sensors: Molecular design, polarity sensitivity, dipole moments changes, screening solvents, and deactivation channel of the excited states

A library of new fluorescent molecular rotors (FMRs) for viscosity sensing was synthesized. The sensitivity of the fluorescence emission toward solvent viscosity and polarity was investigated by using UV/Vis absorption, fluorescence emission spectra, and theoretical calculations. For the new FMRs, red-shifted emissions at 620 nm, Stokes shifts of 170 nm, and up to 40-fold fluorescence enhancement upon increasing the viscosity of solvents were observed (cf. known FMRs with emissions at 491 nm, Stokes shift of 33 nm and fivefold emission enhancement). By using solvents with high viscosity but low polarity, for example, polyethylene glycol (PEG-400) or dimethyl silicone oil, rotors previously identified as non-FMRs with ethylene glycol/glycerol show FMR properties. We found triphenylamine (TPA)-based rotors showed solvent-polarity-dependent emission, but also FMR properties. This is contrary to the known theory of FMRs. One of the TPA-based rotors shows the highest x value of 0.88 (versus 0.6 for known FMRs). The emissive excited states of the FMRs proved to be locally excited (LE) states and twisted intramolecular charge-transfer (TICT) states were identified as dark states through trifluoroacetic acid titration and DFT/time-dependent DFT calculations, which show that the nonradiative decay channel of the excited FMRs is the rotation about the dicyanovinyl C=C double bonds in the S1 state, not rotation around C-C single bonds. Extension of the π conjugation of the rotors increases the rotation barrier around the C=C double bond in the S1 state (to ca. 50 kJ mol-1 or higher), thus the nonradiative channel is blocked and higher fluorescence quantum yields are observed for the new rotors. Our results will be useful for future design of FMRs as fluorescent viscosity sensors.

Synthesis and properties of 1-(4-aminophenyl)-2,4-dicyano-3-diethylamino-9, 9-diethylfluorenes: Potential fluorescent material

Four new fluorenes bearing two electron donors and two electron acceptors were synthesized and found to emit blue fluorescence in both solution and solid states. Copyright

Novel fluorescent carbazole derivative

The object of this invention is to provide an illuminant, which can easily be produced at low cost. This invention is a carbazole derivative luminescent compound having a carbazole ring skeleton, to the nitrogen atom of which is attached an electron-donat

FACILE SYNTHESIS OF NOVEL CARBAZOLES THROUGH HETEROCYCLIZATION REACTIONS AND THEIR ANTIMICROBIAL ACTIVITY

9-Ethylcarbazole binary attached to the position 3 with some heterocyclic systems such as pyrazole, pyrazolinone, pyrazoline, thiazolidinone, azetidinone, triazoline, benzimidazole, benzoxazole, benzothiazole, oxazolidinone, thiouracil and furane were synthesized.The structures of the synthesized compounds have been confirmed by analytical and spectral methods.Some of these compounds were screened to test their antimicrobial properties.