Solution-processable three-dimensionally macroporous KTiOPO4/SiO2 inverse opal powders with enhanced second harmonic emission

Donglin Li*, Zhenzhen Zhao, Xiangze Kong, Miao Tian, Yanru Wang, Yini Cheng, Ting Cao, Junxiang Zhou, Xiaoyong Fan, Lei Gou

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Three-dimensionally ordered macroporous (3DOM) KTiOPO4-based inverse opal powders have been synthesized by designing a nanocrystals-glass composite. These 3DOM nano-glass-ceramics consisting of KTiOPO4 (KTP) nanocrystals and glassy SiO2 were prepared with polymethylmethacrylate (PMMA) colloidal crystal arrays as a template and sol-gel process followed by controlled in-situ crystallization. The 60KTP/40SiO(2) inverse opal powders exhibits strong second harmonic generation (SHG) observed by human naked eyes. Compared with the bulk nano-glass-ceramics, an enhanced SHG is observed from KTP/SiO2 inverse opal powders. This property may make these porous SHG emission systems for drug delivery and bioimaging in nanomedicine. The developed method can be easily adapted to other photoluminescence ions and nanocrystals to develop new multifunctional KTiOPO4-based inverse opal nanoprobes by element doping. (c) 2018 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)256-261
Number of pages6
JournalJournal of Alloys and Compounds
Volume746
DOIs
Publication statusPublished - 25 May 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • Three-dimensionally ordered macroporous
  • Potassium titanyl phosphate
  • Silica
  • Glass-ceramics
  • Sol-gel synthesis
  • Inverse opal
  • Second harmonic generation
  • COLLOIDAL CRYSTALS
  • SHG NANOPROBES
  • ION BATTERIES
  • GENERATION
  • NANOCOMPOSITE
  • MICROSCOPY
  • GLASS
  • CRYSTALLIZATION
  • SCAFFOLDS
  • TEMPLATE

Cite this