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\begin{document}

\title{Fatigue and Fatigue Resistance in S1 Excited State Diarylethenes in
Electric fields}



\author[1]{Xing Nie}%
\author[1]{Yong Yang}%
\author[1]{Tianlv Xu}%
\author[1]{Steven Kirk}%
\author[1]{Samantha Jenkins}%
\affil[1]{Hunan Normal University}%


\vspace{-1em}



  
  \date{May 25, 2024}


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\selectlanguage{english}
\begin{abstract}
The effect of a directional electric-field on the bonding of the undoped
and sulphur doped diarylethene (DTE) switch molecule is investigated
using next generation QTAIM (NG-QTAIM). We introduce chemical bonding
concepts in the form of the least and most preferred directions of
charge density accumulation relative to the associated bond-path, namely
the precessions K and K' \selectlanguage{english}that are demonstrated to be much more
responsive to the electric-field than the Laplacian [?]2\selectlanguage{greek}ρ\selectlanguage{english}(rb). A concept
of bond fatigue is presented in terms of the tendency for a bond-path to
rupture that provides directional versions of familiar bonding QTAIM
concepts. Examples are included where the applied directional
electric-field reduces the tendency towards bond-path rupture and also
the converse. A brief discussion is undertaken of applications of the
precessions K and K' \selectlanguage{english}including switches, ring opening reactions and
molecular rotary motors in the presence of fields that cause a
redistribution of \selectlanguage{greek}ρ\selectlanguage{english}(r).%
\end{abstract}%



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\textbf{Hosted file}

\verb`ms_E-field_DTE_switch.docx`  available at \url{https://authorea.com/users/323188/articles/452152-fatigue-and-fatigue-resistance-in-s1-excited-state-diarylethenes-in-electric-fields}

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