TY - JOUR
T1 - Solution-Processed Nanoporous Organic Semiconductor Thin Films
T2 - Toward Health and Environmental Monitoring of Volatile Markers
AU - Zhang, Fengjiao
AU - Qu, Ge
AU - Mohammadi, Erfan
AU - Mei, Jianguo
AU - Diao, Ying
N1 - Funding Information:
This research was financially supported by the startup funds of University of Illinois. Y.D. and G.Q. acknowledge partial support by National Science Foundation, Division of Materials Research under Grant No. 1641854. J.M. acknowledges the financial support from Office of Naval Research Young Investigator Program (ONR YIP), Award No. N00014-16-1-2551. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The authors also thank beamline scientist Joseph W. Strzalka of Advanced Photon Source, Argonne National Laboratory for facilitating the GIXD measurements. The authors also thank Prof. Chong-an Di of Institute of Chemistry, Chinese Academy of Sciences for supporting the mask of device fabrication. This work was conducted in part in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois. All figures were replaced by versions of higher resolution on June 20, 2017, following initial publication in early view.
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/6/20
Y1 - 2017/6/20
N2 - Porous materials are ubiquitous in nature and have found a wide range of applications because of their unique absorption, optical, mechanical, and catalytic properties. Large surface-area-to-volume ratio is deemed a key factor contributing to their catalytic properties. Here, it is shown that introducing tunable nanopores (50–700 nm) to organic semiconductor thin films enhances their reactivity with volatile organic compounds by up to an order of magnitude, while the surface-area-to-volume ratio is almost unchanged. Mechanistic investigations show that nanopores grant direct access to the highly reactive sites otherwise buried in the conductive channel of the transistor. The high reactivity of nanoporous organic field-effect transistors leads to unprecedented ultrasensitive, ultrafast, selective chemical sensing below the 1 ppb level on a hundred millisecond time scale, enabling a wide range of health and environmental applications. Flexible sensor chip for monitoring breath ammonia is further demonstrated; this is a potential biomarker for chronic kidney disease.
AB - Porous materials are ubiquitous in nature and have found a wide range of applications because of their unique absorption, optical, mechanical, and catalytic properties. Large surface-area-to-volume ratio is deemed a key factor contributing to their catalytic properties. Here, it is shown that introducing tunable nanopores (50–700 nm) to organic semiconductor thin films enhances their reactivity with volatile organic compounds by up to an order of magnitude, while the surface-area-to-volume ratio is almost unchanged. Mechanistic investigations show that nanopores grant direct access to the highly reactive sites otherwise buried in the conductive channel of the transistor. The high reactivity of nanoporous organic field-effect transistors leads to unprecedented ultrasensitive, ultrafast, selective chemical sensing below the 1 ppb level on a hundred millisecond time scale, enabling a wide range of health and environmental applications. Flexible sensor chip for monitoring breath ammonia is further demonstrated; this is a potential biomarker for chronic kidney disease.
KW - gas sensors
KW - healthcare monitoring
KW - nanoporous films
KW - organic semiconductors
KW - solution processes
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U2 - 10.1002/adfm.201701117
DO - 10.1002/adfm.201701117
M3 - Article
AN - SCOPUS:85018961089
VL - 27
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 23
M1 - 1701117
ER -