Tailoring Chiroptical Activity of Iron Disulfide Quantum Dot Hydrogels with Circularly Polarized Light

被引：108

作者：

Hao, Changlong ^{[1
,2
]}

Gao, Yifan ^{[1
,2
]}

Wu, Di ^{[3
]}

Li, Si ^{[1
,2
]}

Xu, Liguang ^{[1
,2
]}

Wu, Xiaoling ^{[1
,2
]}

Guo, Jun ^{[4
]}

Sun, Maozhong ^{[1
,2
]}

Li, Xiu ^{[1
,2
]}

Xu, Chuanlai ^{[1
,2
]}

Kuang, Hua ^{[1
,2
]}

机构：

[1] Jiangnan Univ, Key Lab Synthet & Biol Colloids, Minist Educ, State Key Lab Food Sci & Technol,Sch Chem & Mat E, Wuxi 214122, Jiangsu, Peoples R China

[2] Jiangnan Univ, Int Joint Res Lab Biointerface & Biodetect, Wuxi, Jiangsu, Peoples R China

[3] Tsinghua Univ, Yangtze Delta Reg Inst, 705 Yatai Rd, Jiaxing 314006, Zhejiang, Peoples R China

[4] Soochow Univ, Testing & Anal Ctr, Renai Rd 199, Suzhou 215123, Peoples R China

来源：

ADVANCED MATERIALS | 2019年 / 31卷 / 36期

基金：

中国国家自然科学基金;

关键词：

circularly polarized light; electron transfer; hydrogels; iron disulfide quantum dots; SUPRAMOLECULAR CHIRALITY; OPTICAL-ACTIVITY; NANOPARTICLES; INVERSION;

D O I：

10.1002/adma.201903200

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页数：6

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