Monolithic DNApatite: An Elastic Apatite with Sub-Nanometer Scale Organo–Inorganic Structures

  • Jin Woong Lee
  • , Byoungsang Lee
  • , Cheol Hyun Park
  • , Jun Hyuk Heo*
  • , Tae Yoon Lee
  • , Dongtak Lee
  • , Jina Bae
  • , Priyannth Ramasami Sundharbaabu
  • , Won Kyun Yeom
  • , Sudong Chae
  • , Jae Hyuk Lim
  • , Seok Won Lee
  • , Jin Seok Choi
  • , Hyung Bin Bae
  • , Jae Young Choi
  • , Eun Ho Lee
  • , Dae Sung Yoon
  • , Geun Young Yeom
  • , Hyunjung Shin
  • , Jung Heon Lee*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Hydroxyapatite (HA) exhibits outstanding biocompatibility, bioactivity, osteoconductivity, and natural anti-inflammatory properties. Pure HA, ion-doped HA, and HA-polymer composites are investigated, but critical limitations such as brittleness remain; numerous efforts are being made to address them. Herein, the novel self-crystallization of a polymeric single-stranded deoxyribonucleic acid (ssDNA) without additional phosphate ions for synthesizing deoxyribonucleic apatite (DNApatite) is presented. The synthesized DNApatite, DNA1Ca2.2(PO4)1.3OH2.1, has a repetitive dual phase of inorganic HA crystals and amorphous organic ssDNA at the sub-nm scale, forming nanorods. Its mechanical properties, including toughness and elasticity, are significantly enhanced compared with those of HA nanorod, with a Young's modulus similar to that of natural bone.

Original languageEnglish
Article number2406179
JournalAdvanced Materials
Volume36
Issue number41
DOIs
Publication statusPublished - 2024 Oct 10

Bibliographical note

Publisher Copyright:
© 2024 Wiley-VCH GmbH.

Keywords

  • DNA
  • DNApatite
  • bone mimicking structure
  • elastic apatite
  • organo–inorganic structure
  • sub-nanometer nacre mimetic architecture

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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