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Transient absorption (TA) spectra reveal these cyclic motors exhibit unprecedented acceleration of rotary speed upon incorporation into an all\u2010benzene macrocyclic stator, which is attributed to ring strain induced decrease of the steric hindrance at the fjord region. Especially,\n                    <jats:bold>M[8]CPP<\/jats:bold>\n                    realizes 10\n                    <jats:sup>7<\/jats:sup>\n                    \u2010fold increase of the rotation speed compared with the noncyclic motor. Such high rotation speed leads to the fluorescence quenching of the motorized carbon nanohoops. Interestingly,\n                    <jats:bold>M[11]CPP<\/jats:bold>\n                    possesses a rigid macrocyclic cavity, which can bind with C\n                    <jats:sub>60<\/jats:sub>\n                    and C\n                    <jats:sub>70<\/jats:sub>\n                    in 1:1 stoichiometric ratio. The formation of host\u2013guest complexes decelerates the photo\u2010isomerization processes of\n                    <jats:bold>M[11]CPP<\/jats:bold>\n                    and achieves photo\u2010activated fluorescence emission of the host\u2013guest systems. Furthermore, taking advantage of the intrinsic chirality of\n                    <jats:bold>M[11]CPP<\/jats:bold>\n                    , as well as the CH\u2013\n                    <jats:italic>\u03c0<\/jats:italic>\n                    interactions between\n                    <jats:bold>M[11]CPP<\/jats:bold>\n                    and perylene, the chirality is transferred onto perylene, and circularly polarized luminescence is realized. This work not only provides a novel strategy for tuning the optical properties of cycloparaphenylenes through host\u2013guest interactions but also demonstrates the potential of integrating molecular motors into macrocyclic systems to achieve dynamic control over molecular behavior.\n                  <\/jats:p>","DOI":"10.1002\/anie.202525767","type":"journal-article","created":{"date-parts":[[2025,12,24]],"date-time":"2025-12-24T06:53:53Z","timestamp":1766559233000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Photo\u2010Activated Emission and Chirality Transfer Based on Host\u2013Guest Chemistry of a Motorized All\u2010Benzene Nanohoop"],"prefix":"10.1002","volume":"65","author":[{"given":"Zhao\u2010Tao","family":"Shi","sequence":"first","affiliation":[{"name":"State Key Laboratory of Soil Pollution Control and Safety, Stoddart Institute of Molecular Science, Department of Chemistry Zhejiang University  Hangzhou 310058 P.R. 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