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@ARTICLE{Sick:840396,
author = {Sick, Torben and Hufnagel, Alexander G. and Kampmann,
Jonathan and Kondofersky, Ilina and Calik, Mona and Rotter,
Julian M. and Evans, Austin and Döblinger, Markus and
Herbert, Simon and Peters, Kristina and Böhm, Daniel and
Knochel, Paul and Medina, Dana D. and Fattakhova-Rohlfing,
Dina and Bein, Thomas},
title = {{O}riented {F}ilms of {C}onjugated 2{D} {C}ovalent
{O}rganic {F}rameworks as {P}hotocathodes for {W}ater
{S}plitting},
journal = {Journal of the American Chemical Society},
volume = {140},
number = {6},
issn = {0002-7863},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {FZJ-2017-07929},
pages = {2085 - 2092},
year = {2017},
abstract = {Light-driven water electrolysis at a semiconductor surface
is a promising way to generate hydrogen from sustainable
energy sources, but its efficiency is limited by the
performance of available photoabsorbers. Here we report the
first time investigation of covalent organic frameworks
(COFs) as a new class of photoelectrodes. The presented
2D-COF structure is assembled from aromatic
amine-functionalized tetraphenylethylene and thiophene
dialdehyde building blocks to form conjugated polyimine
sheets, which π-stack in the third dimension to create
photoactive porous frameworks. Highly oriented COF films
absorb light in the visible range to generate photo-excited
electrons that diffuse to the surface and are transferred to
the electrolyte resulting in proton reduction and hydrogen
evolution. The observed photoelectrochemical activity of the
2D-COF films and their photocorrosion stability in water
pave the way for a novel class of photoabsorber materials
with versatile optical and electronic properties that are
tunable through the selection of appropriate building blocks
and their three-dimensional stacking.},
cin = {IEK-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29249151},
UT = {WOS:000425475300025},
doi = {10.1021/jacs.7b06081},
url = {https://juser.fz-juelich.de/record/840396},
}