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Epitaxial Growth of Oriented Metalloporphyrin Network Thin Film for Improved Selectivity of Volatile Organic Compounds
Author(s) -
Li DeJing,
Gu ZhiGang,
Vohra Ismail,
Kang Yao,
Zhu YongSheng,
Zhang Jian
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201604035
Subject(s) - materials science , selectivity , thin film , photocurrent , adsorption , quartz crystal microbalance , epitaxy , tetracyanoquinodimethane , porphyrin , chemical engineering , xylene , metal organic framework , molecule , toluene , benzene , organic chemistry , nanotechnology , optoelectronics , chemistry , catalysis , layer (electronics) , engineering
This study reports an oriented and homogenous cobalt‐metalloporphyrin network (PIZA‐1) thin film prepared by liquid phase epitaxial (LPE) method. The thickness of the obtained thin films can be well controlled, and their photocurrent properties can also be tuned by LPE cycles or the introduction of conductive guest molecules (tetracyanoquinodimethane and C 60 ) into the PIZA‐1 pores. The study of quartz crystal microbalance adsorption confirms that the PIZA‐1 thin film with [110]‐orientation presents much higher selectivity of benzene over toluene and p ‐xylene than that of the PIZA‐1 powder with mixed orientations. These results reveal that the selective adsorption of volatile organic compounds highly depends on the growth orientations of porphyrin‐based metal‐organic framework thin films. Furthermore, the work will provide a new perspective for developing important semiconductive sensing materials with improved selectivity of guest compounds.