Skip to main content

Polymorph of 2,9-Dichloroquinacridone and Their Electronic Properties

Buy Article:

$20.00 plus tax (Refund Policy)

2,9-Dichloroquinacridone is an industrially important bluishred pigment which falls in the category of hydrogen-bonded pigments. In addition to red single crystals, we have recently isolated black single crystals from the vapor phase. Structure analysis of both crystals revealed that the red phase is typically characterized by NH…O intermolecular hydrogen bonds and corresponds to the commercial product; whereas, in the black phase, there exist no intermolecular hydrogen bonds, quite contrary to our expectation. Furthermore, the molecule in the black phase is heavily deformed and has a higher heat of formation than that in the red phase. Because of this, the black phase can easily be transformed into the red phase by heating at about 530 K for several minutes. Additionally, molecular distortion upon crystallization is found to largely displace the absorption band toward longer wavelengths, giving rise to a black color in the solid state.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2006-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more