Unconventional Route to Uniform Hollow Semiconducting Nanoparticles with Tailorable Dimensions, Compositions, Surface Chemistry, and Near‐Infrared Absorption
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 10, 2017
- Source ID
- 10.1002/anie.201706182
Entities
People
- Beibei Jiang
- Chaowei Feng
- Cheng‐hsin Lu
- Juan Peng
- Mona Zebarjadi
- Naresh Thadhani
- Shuang Pan
- Xinchang Pang
- Yajing Chang
- Yanjie He
- Yeu‐wei Harn
- Yihuang Chen
- Young Jun Yoon
- Zhiqun Lin
- Zhitao Kang
Organizations
- Air Force Office of Scientific Research
- Fudan University
- Georgia Tech
- National Science Foundation
- University of Virginia