Host–guest complexation‐induced chirality switching of pillararenes by perylene diimide‐based hexagonal metallacages
Yali Hou,
Chaoqun Mu,
Yunzhi Shi,
Zeyuan Zhang,
Haifei Liu,
Zilin Zhou,
Sanliang Ling,
Bingbing Shi,
Xianglong Duan,
Cheng Yang,
Mingming Zhang
Affiliations
Yali Hou
Second Department of General Surgery, Shaanxi Provincial People's Hospital Shaanxi Engineering Research Center of Medical Polymer Materials Xi'an P. R. China
Chaoqun Mu
School of Chemistry and Chemical Engineering Xi'an University of Architecture and Technology Xi'an P. R. China
Yunzhi Shi
Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry Sichuan University Chengdu P. R. China
Zeyuan Zhang
State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft Matter School of Materials Science and Engineering Xi'an Jiaotong University Xi'an P. R. China
Haifei Liu
State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft Matter School of Materials Science and Engineering Xi'an Jiaotong University Xi'an P. R. China
Zilin Zhou
State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft Matter School of Materials Science and Engineering Xi'an Jiaotong University Xi'an P. R. China
Sanliang Ling
Advanced Materials Research Group Faculty of Engineering University of Nottingham Nottingham UK
Bingbing Shi
Key Laboratory of Eco‐Functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou P. R. China
Xianglong Duan
Second Department of General Surgery, Shaanxi Provincial People's Hospital Shaanxi Engineering Research Center of Medical Polymer Materials Xi'an P. R. China
Cheng Yang
Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry Sichuan University Chengdu P. R. China
Mingming Zhang
State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft Matter School of Materials Science and Engineering Xi'an Jiaotong University Xi'an P. R. China
Abstract Chirality in confined nanospaces has brought some new insights into chirality transfer, amplification, and chiroptical properties. However, chirality switching, which is a common phenomenon in biological systems, has never been realized in confined environments. Herein, we report a type of hexagonal metallacages that shows good host–guest interactions with ethoxy pillar[5]arene and pillar[6]arene, as confirmed by single‐crystal X‐ray analysis. Importantly, when a chiral pillar[5]arene‐based molecular universal joint (MUJ) is used as the guest, the host–guest complexation would drive the alkyl ring of the MUJ flip from outside to inside the cavity of its pillar[5]arene unit, which enables the configuration change along with the chirality inversion of the MUJ. Moreover, the host–guest complexation facilitates the chirality transfer from guests to hosts, giving circularly polarized luminescence to the system. This study provides a unique metallacage‐pillararene recognition motif for the chirality switching of planar chiral pillararenes, which will promote the construction of host–guest systems with tunable chirality for advanced applications.
