Reactivity of the Ruddlesden-Popper phase H2la 2Ti3O10 with organic compounds: Intercalation and grafting reactions

Seiichi Tahara, Tomomichi Ichikawa, Go Kajiwara, Yoshiyuki Sugahara*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


A protonated form of the Ruddlesden-Popper-type ion-exchangeable layered perovskite H2La2Ti3O10 (H 2LaTi) has been modified with n-alkylamine and n-alcohols to yield intercalation compounds and alkoxy derivatives, respectively. As concerns the intercalation of n-alkylamines into H2LaTi, no reaction of H 2LaTi with n-butylamine occurred in anhydrous solvent, and the addition of water was required for the successful intercalation of n-butylamine into H2LaTi. The successful uptake of n-butylammonium ions from an n-butylammonium hydroxide aqueous solution suggests that the intercalation mechanism is of the ion-exchange type rather than the acid-base type. For interlayer surface modification with n-alcohol, no direct reaction of H 2LaTi with n-alcohol occurred, but the n-propoxy derivative of H 2LaTi formed by using the intercalation compound of H2LaTi with n-butylamine as an intermediate. In addition, reactions between the n-propoxy derivative of H2LaTi and n-alcohols (n-butanol, n-octanol, n-decanol, and n-dodecanol) led to the formation of various n-alkoxy derivatives via an alcohol-exchange-type reaction. As the model for n-alkoxy derivatives of H2LaTi, a bilayer arrangement of the n-alkyl chain possessing an all-trans ordered state with a 75° tilting angle is proposed. The reaction mechanisms of these reactions are also discussed.

Original languageEnglish
Pages (from-to)2352-2358
Number of pages7
JournalChemistry of Materials
Issue number9
Publication statusPublished - 2007 May 1

ASJC Scopus subject areas

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


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