Unconventional Route to Uniform Hollow Semiconducting Nanoparticles with Tailorable Dimensions, Compositions, Surface Chemistry, and Near-Infrared Absorption

Yanjie He, Xinchang Pang, Beibei Jiang, Chaowei Feng, Yeu Wei Harn, Yihuang Chen, Young Jun Yoon, Shuang Pan, Cheng Hsin Lu, Yajing Chang, Mona Zebarjadi, Zhitao Kang, Naresh Thadhani, Juan Peng, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Despite impressive recent advances in the synthesis of lead chalcogenide solid nanoparticles, there are no examples of lead chalcogenide hollow nanoparticles (HNPs) with controlled diameter and shell thickness as current synthetic approaches for HNPs have inherent limitations associated with their complexity, inability to precisely control the dimensions, and limited possibilities with regard to applicable materials. Herein, we report on an unconventional strategy for crafting uniform lead chalcogenide (PbS and PbTe) HNPs with tailorable size, surface chemistry, and near-IR absorption. Amphiphilic star-like triblock copolymers [polystyrene-block-poly(acrylic acid)-block-polystyrene and polystyrene-block-poly(acrylic acid)-block-poly(3,4-ethylenedioxythiophene)] were rationally synthesized and exploited as nanoreactors for the formation of uniform PbS and PbTe HNPs. Compared to their solid counterparts, the near-IR absorption of the HNPs is blue-shifted owing to the hollow interior. This strategy can be readily extended to other types of intriguing low-band-gap HNPs for diverse applications.

Original languageEnglish
Pages (from-to)12946-12951
Number of pages6
JournalAngewandte Chemie - International Edition
Volume56
Issue number42
DOIs
StatePublished - 9 Oct 2017

Bibliographical note

Funding Information:
We gratefully acknowledge funding support from the Air Force Office of Scientific Research (FA9550-16-1-0187), the National Science Foundation (CMMI 1562075), and the National Natural Science Foundation of China (21674024). Support by Independent Research and Development funding from Georgia Tech Research Institute is also acknowledged.

Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • block copolymers
  • hollow nanoparticles
  • lead chalcogenides
  • nanoreactors
  • near-infrared absorption

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