Pumping a Ring-Sliding Molecular Motion by a Light-Powered Molecular Motor

Jing-Jing Yu, Li-Yang Zhao, Zhao-Tao Shi, Qi Zhang, Gabor London, Wen-Jing Liang, Chuan Gao, Ming-Ming Li, Xiao-Ming Cao, He Tian, Ben L. Feringa, Da-Hui Qu*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)

Abstract

Designing artificial molecular machines to execute complex mechanical tasks, like coupling rotation and translation to accomplish transmission of motion, continues to provide important challenges. Herein, we demonstrated a novel molecular machine comprising a second-generation light-driven molecular motor and a bistable [1]rotaxane unit. The molecular motor can rotate successfully even in an interlocked [1]rotaxane system through a photoinduced cis-to-trans isomerization and a thermal helix inversion, resulting in concomitant transitional motion of the [1]rotaxane. The transmission process was elucidated via H-1 NMR,H-1-H-1 COSY, HMQC, HMBC, and 2D ROESY NMR spectroscopies, UV-visible absorption spectrum, and density functional theory calculations. This is the first demonstration of a molecular motor to rotate against the appreciably noncovalent interactions between dibenzo-24-crown-8 and N-methyltriazolium moieties comprising the rotaxane unit, showing operational capabilities of molecular motors to perform more complex tasks.

Original languageEnglish
Pages (from-to)5790-5802
Number of pages13
JournalJournal of Organic Chemistry
Volume84
Issue number9
DOIs
Publication statusPublished - 3-May-2019

Keywords

  • ROTARY MOTION
  • DYNAMIC CONTROL
  • ACCELERATION
  • DISTANCE
  • ROTOR

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