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@ARTICLE{Liang:630612,
      author       = {Liang, Jiaxu and Ju, Cheng-Wei and Liu, Zonghang and Li,
                      Hailong and Karina, Aigerim and Eklund, Tobias and Zheng,
                      Wenhao and Amann-Winkel, Katrin and Cai, Weizhao and Wagner,
                      Manfred and Qiu, Zijie and Weil, Tanja and Müllen, Klaus},
      title        = {{F}luorescence of {H}elical {M}olecular {S}prings {U}nder
                      {H}igh {P}ressure},
      journal      = {Angewandte Chemie / International edition},
      volume       = {64},
      number       = {21},
      issn         = {1433-7851},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {PUBDB-2025-01890},
      pages        = {e202500923},
      year         = {2025},
      abstract     = {Although the unique structure of helicenes resembles
                      molecular springs, the effects of their
                      extension–contraction cycles on their properties have
                      rarely been explored. Here, we investigated the fluorescence
                      of two π-extended [n]helicenes with different helical
                      lengths n, named [7] and [9], under high pressures in a
                      diamond anvil cell. The experimental results showed that
                      compound [9], with a longer helical length, exhibited a more
                      sensitive fluorescence response than [7] in both crystalline
                      and solvated states upon compression. Theoretical
                      calculations reveal that π–π overlapping at their
                      helices in these molecular springs provides an additional
                      contribution to their fluorescence properties under
                      compression when the overlap becomes sufficiently strong.
                      Our results provide insights into structure–property
                      relationships of helical molecules under high-pressure
                      conditions and verify the potential of helicenes as
                      molecular springs for future applications in molecular
                      machines.},
      cin          = {DOOR ; HAS-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20220099
                      (I-20220099)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20220099},
      experiment   = {EXP:(DE-H253)P-P02.2-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:40062695},
      doi          = {10.1002/anie.202500923},
      url          = {https://bib-pubdb1.desy.de/record/630612},
}