N-heterocyclic carbene-silver complexes: Potential conductive materials for silver pastes in electronic applications

Won Jin Park, Jaehoon Choe, Sang Mi Lee, Hye Jin Lee, Jaeyoung Lee, Kwang Ho Song, Hyosun Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


New organosilver complexes, silver(I) tetraalkylbis(benzimidazolidene) halide [1a-3a] and silver(I) dimethyl-N,N′-hexyl(imidazolyl) bromide [4a], were synthesized and incorporated into electroconductive silver pastes. Complex 3a had a 15-fold higher conductivity than conventional silver salt pastes, specifically silver(I) hexanoate, and exhibited a smooth, homogeneous surface after reductive heat-treatment of the silver paste. While the conductivity of silver(I) hexanoate can be increased by up to 33% by the addition of a supporting silver source, such as Ag2O, the conductivity of 3a was markedly decreased by Ag2O treatment. Thus, 3a can be used in silver pastes with moderate conductivity and can reduce the amount of conventional silver supporting materials without loss of electroconductivity.

Original languageEnglish
Pages (from-to)465-469
Number of pages5
Issue number3
Publication statusPublished - 2011 Feb 21

Bibliographical note

Funding Information:
The authors are grateful to the BK21 programs of Korea University and Kyungpook National University supported by LG Chem. Ltd. This work was supported by the Nuclear R&D Programs through the National Research Foundation of Korea (NRF) funded by Ministry of Education, Science and Technology (Grant No. 2010-0018535 ).


  • Ag(I)-NHC complex
  • Electroconductivity
  • N-heterocyclic carbenes (NHCs)
  • Silver paste
  • Silver(I) hexanoate

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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