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@ARTICLE{AydanAlkan:1044609,
author = {Aydan Alkan, Ecem and Metni, Houssam and Reiser, Patrick
and Kupfer, Christian and Rocha-Ortiz, Juan S. and Barabash,
Anastasia and Batentschuk, Miroslaw and Hauch, Jens A. and
Friederich, Pascal and Brabec, Christoph J.},
title = {{T}uning the {T}ransparency and {E}xciton {T}ransition of
{D}‐π‐{A}‐π‐{D} {T}ype {S}mall {M}olecules},
journal = {Chemistry - a European journal},
volume = {31},
number = {45},
issn = {0947-6539},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2025-03280},
pages = {e00657},
year = {2025},
abstract = {Organic small molecules possess significant potential for
semitransparent optoelectronic applications due to their
tunable optical properties and inherent transparency.
However, tailoring these materials is challenging as their
optoelectronic properties are sensitive to subtle structural
changes, compounded by the existence of over a million
potential structural designs. To address these complexities,
we present a material discovery workflow that combines
literature-based molecule preselection with TDDFT
calculations, creating customized small molecule structures
with adjustable transparency windows. We identified
fifty-four small molecules with a D-π-A-π-D architecture,
incorporating nine central (A) and six end (D) units
connected by a thiophene π-bridge. Through TDDFT
calculations, we determined the theoretical absorption
spectra and energy levels of the identified molecules.
Ultimately, we synthesized twenty-four molecules that
exhibit promising transparency properties by selectively
absorbing photons in the ultraviolet (UV) and near-infrared
(NIR) regions, with a significant optical transmission band
relevant to the visible spectrum, which we will refer to as
“optical window”. Characterization of the resultant
small molecules revealed that six of them, in particular,
exhibited selective absorption with the broadest “optical
window”. We believe that our study will provide valuable
insights to establish an effective material discovery
workflow for highly transparent conjugated organic small
molecules.},
cin = {IET-2},
ddc = {660},
cid = {I:(DE-Juel1)IET-2-20140314},
pnm = {1212 - Materials and Interfaces (POF4-121)},
pid = {G:(DE-HGF)POF4-1212},
typ = {PUB:(DE-HGF)16},
pubmed = {40693293},
UT = {WOS:001533348100001},
doi = {10.1002/chem.202500657},
url = {https://juser.fz-juelich.de/record/1044609},
}