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@ARTICLE{Shenqian:888458,
      author       = {Shenqian, Ma and Weixin, Zhao and Jun, Zhou and Yang-gang,
                      Wang and Jiaou, Wang and Shengqi, Chu and Liu, Zigeng and
                      Leyu, Wang and Guolei, Xiang},
      title        = {{A} new type of noncovalent surface–π stacking
                      interaction occurring on peroxide-modified titania
                      nanosheets driven by vertical π-state polarization},
      journal      = {Chemical science},
      volume       = {12},
      number       = {12},
      issn         = {2041-6539},
      address      = {Cambridge},
      publisher    = {RSC},
      reportid     = {FZJ-2020-04926},
      pages        = {4411 - 4417},
      year         = {2021},
      abstract     = {Noncovalent π stacking of aromatic molecules is a
                      universal form of noncovalent interactions normally
                      occurring on planar structures (such as aromatic molecules
                      and graphene) based on sp2-hybridized atoms. Here we reveal
                      a new type of noncovalent surface–π stacking unusually
                      occurring between aromatic groups and peroxide-modified
                      titania (PMT) nanosheets, which can drive versatile aromatic
                      adsorptions. We experimentally explore the underlying
                      electronic-level origin by probing the perturbed changes of
                      unoccupied Ti 3d states with near-edge X-ray absorption fine
                      structures (NEXAFS), and find that aromatic groups can
                      vertically attract π electrons in the surface peroxo-Ti
                      states and increase their delocalization regions. Our
                      discovery updates the concept of noncovalent π-stacking
                      interactions by extending the substrates from carbon-based
                      structures to a transition metal oxide, and presents an
                      approach to exploit the surface chemistry of nanomaterials
                      based on noncovalent interactions.},
      cin          = {IEK-9},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1223 - Batteries in Application (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1223},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34163705},
      UT           = {WOS:000635768300018},
      doi          = {10.1039/D0SC06601J},
      url          = {https://juser.fz-juelich.de/record/888458},
}