Picene


1 g

Order Code: M2180B1
Price excludes taxes
Not in stock (price excludes taxes)
Price: Loading...

General Information

CAS number 213-46-7
Full name 1,2:7,8-Dibenzophenanthrene
Chemical formula C22H14
Molecular weight 278.35 g/mol
Absorption λmax 285 nm in DCM (lit.)
Fluorescence n/a
HOMO/LUMO HOMO = 5.5 eV, LUMO = 2.2 eV [1]
Classification / Family Aromatic hydrocarbons, Phenacene, High-performance Field-effect transistors, Superconductivity, 2D materials.

Product Details

Purity Unsublimed > 99% (HPLC)
Melting point 366-367 °C
Appearance White crystals/powder

 

picene, 213-46-7
Chemical structure of Picene; CAS No. 213-46-7.

 

Applications

Picene, an isomer of pentacene with an armchair arrangement of benzene rings, can be regarded as a fragment of a graphene sheet. Picene is more chemically-stable than pentacene because of its larger energy band gap (3.3 eV) and larger ionisation potential (5.5 eV).

p-Channel FET characteristics of the picene thin-film FET can be significantly enhanced by exposure to O2, with the field-effect mobility (μ) reaching 1.4 – 3.2 cm2V–1 s–1. It is believed that the highest two picene orbitals are inverted due to the strong interactions between the singly-occupied oxygen π orbital and the highest occupied orbital of picene [2, 3]. The μ value of the picene thin-film FET can be further improved to 5 cm2V–1 s–1 under 500 torr of O2, the highest μ reported to date for an organic thin-film FET.

Like graphite or other 2D materials, picene can be intercalated with metal (e.g. potassium). The magnetic properties of the Kx picene solids also show superconducting transitions at 7 K and 18 K [4].

 

Literature and Reviews

  1. Transistor Application of Phenacene Molecules and Their Characteristics, Y. Kubozono et al., Eur. J. Inorg. Chem., 3806–3819 (2014); DOI:10.1002/ejic.201402168.
  2. Air-assisted High-performance Field-effect Transistor with Thin Films of Picene, H. Okamoto et al., J. Am. Chem. Soc., 130, 10470–10471 (2008); DIO: 10.1021/ja803291a.
  3. Effect of Oxygen on the Electronic Structure of Highly Crystalline Picene Films, Y. Wang et al., J. Am. Chem. Soc., 133, 10054–10057 (2011); DOI: 10.1021/ja204011j.
  4. Superconductivity in alkali-metal-doped picene, R. Mitsuhashi et al., Nature, 464, 76-79 (2010); doi :10.1038/nature08859
  5. Characteristics of Single Crystal Field-Effect Transistors with a New
    Type of Aromatic Hydrocarbon, Picene, N. Kawai et al., J. Phys. Chem. C, 116, 7983−7988 (2012); DOI: 10.1021/jp300052p.
  6. Air-assisted High performance Field-effect Transistor with Thin Films of Picene, H. Okamoto et al., J. Am. Chem. Soc., 130 (2008) 10470–10471. doi:10.1021/ja803291a.

 


To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.