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Updated: Jan 22, 2026

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles
Published on: August 7, 2016
Tailoring Chiroptical Activity of Iron Disulfide Quantum Dot Hydrogels with Circularly Polarized Light
Changlong Hao1,2, Yifan Gao1,2, Di Wu3
1Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
Abstract:
Chiral inorganic nanomaterials have recently attracted significant attention because of their many important applications, such as in asymmetric catalysis and chiral sensing. Here, chiral iron disulfide quantum dots (FeS2 QDs) are synthesized via chirality transfer using l/d-cysteine (Cys) as chiral ligands. The chiral FeS2 QDs are coassembled with two gelators to produce a cogel (l- or d-[Gel+FeS2 ]) with a g-factor value of ±0.06. Interestingly, the cogels display intense circularly polarized luminescence. More significantly, the degree of twisting (twist pitch) and the diameter of the cogels can be markedly regulated by illumination with circularly polarized light (CPL) in the ranges of 120-213 and 37-65 nm, respectively, which is caused by the CPL-induced electron transfer. This research opens the way for the design of chiroptical devices with a wide range of functions and applications.
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