Synergistic interplay between photoisomerization and photoluminescence in a light-driven rotary molecular motor

Ryojun Toyoda, Nong V. Hoang, Kiana Gholamjani Moghaddam, Stefano Crespi, Daisy R. S. Pooler, Shirin Faraji (), Maxim S. Pshenichnikov () and Ben L. Feringa ()
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Ryojun Toyoda: University of Groningen
Nong V. Hoang: University of Groningen
Kiana Gholamjani Moghaddam: University of Groningen
Stefano Crespi: University of Groningen
Daisy R. S. Pooler: University of Groningen
Shirin Faraji: University of Groningen
Maxim S. Pshenichnikov: University of Groningen
Ben L. Feringa: University of Groningen

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Photoactuators and photoluminescent dyes utilize light to perform mechanical motion and undergo spontaneous radiation emission, respectively. Combining these two functionalities in a single molecule would benefit the construction of advanced molecular machines. Due to the possible detrimental interaction between the two light-dependent functional parts, the design of hybrid systems featuring both functions in parallel remains highly challenging. Here, we develop a light-driven rotary molecular motor with an efficient photoluminescent dye chemically attached to the motor, not compromising its motor function. This molecular system shows efficient rotary motion and bright photoluminescence, and these functions can be addressed by a proper choice of excitation wavelengths and solvents. The moderate interaction between the two parts generates synergistic effects, which are beneficial for lower-energy excitation and chirality transfer from the motor to the photoluminescent dye. Our results provide prospects towards photoactive multifunctional systems capable of carrying out molecular rotary motion and tracking its location in a complex environment.

Date: 2022
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DOI: 10.1038/s41467-022-33177-0

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