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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},
}