Design and synthesis of low dipole moment chromophores: 2,6-disubstitute cycloheptimidazoles

Shuang Zhang, Guijiang Zhou, Zhou Yang, Anjun Qin, Peng Wang, Cheng Ye

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


2,6-Disubstitute cycloheptimidazole, which possess a low dipole moment in the ground state (μg) and large first hyperpolarizability (β), have been designed. These compounds have the reversion of the excited state dipole moment and can be optimized by the donor-acceptor substitution. Of these chromophores studied. 2-dimethylamino-6-nitrocycloheptimidazole (DCNCH) was selected for synthesis and investigations. The experimental values of μg and β are 5.11D and 34.6 × 10-30 esu, respectively. They are good agreement with theoretical results. The second order NLO coefficient (d33) of DANCH-doped polymer film is 12.9 pm/V.

Original languageEnglish
Pages (from-to)1545-1546
Number of pages2
JournalSynthetic Metals
Issue number1-3
StatePublished - 4 Apr 2003
Externally publishedYes
EventICSM 2002 - Shanghai, China
Duration: 29 Jun 20025 Jul 2002


  • Cycloheptimidazole derivatives
  • Dipole moment
  • First hyperpolarizability
  • Second order NLO


Dive into the research topics of 'Design and synthesis of low dipole moment chromophores: 2,6-disubstitute cycloheptimidazoles'. Together they form a unique fingerprint.

Cite this