New class of two-photon-absorbing chromophores based on dithienothiophene

Oh Kil Kim, Kwang Sup Lee, Han Young Woo, Kie Soo Kim, Guang S. He, Jacek Swiatkiewicz, Paras N. Prasad

Research output: Contribution to journalArticlepeer-review

349 Citations (Scopus)


Novel two-photon absorption (TPA) chromophores are synthesized; they have dithienothiophene (DTT) as a π-center which is attached by electron donor (D) or electron acceptor (A) at each end through a π-conjugation. Their TPA cross section, measured using nanosecond- as well as femtosecond-pulsed laser, exhibits one of the largest values known so far. This is attributable mainly to the unique electronic properties of DTT.

Original languageEnglish
Pages (from-to)284-286
Number of pages3
JournalChemistry of Materials
Issue number2
Publication statusPublished - 2000 Feb
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry


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