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Large and Fast Single‐Crystal Resistive Humidity Sensitivity of Metal Pnictide Halides Containing van der Waals Host–Guest Interactions
Author(s) -
Jiang XiaoMing,
Yan ZhiBo,
Liu Dan,
Wang KeFeng,
Guo GuoCong,
Li ShaoZhen,
Liu JunMing
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201402572
Subject(s) - van der waals force , pnictogen , halide , humidity , resistive touchscreen , cationic polymerization , single crystal , chemistry , metal , crystal (programming language) , chemical physics , materials science , inorganic chemistry , crystallography , condensed matter physics , polymer chemistry , molecule , thermodynamics , physics , organic chemistry , superconductivity , programming language , engineering , computer science , electrical engineering
Two new metal pnictide halides, (Hg 9.75 As 5.5 )(GaCl 4 ) 3 and (Hg 13 Sb 8 )(ZnBr 4 ) 4 , have been prepared by solid‐state reactions. Their structures feature 3D cationic host frameworks built of mercury pnictide polyhedra and form 1D tunnels filled with discrete guest halide polyanions; the guests and hosts are assembled by van der Waals interactions. Both complexes exhibit good single‐crystal humidity sensitivity, with a humidity sensitivity factor as big as three orders of magnitude, a quick resistance response, fast recovery, and good reproducibility. This study provide a new way to design promising resistive humidity detectors by introducing van der Waals host–guest interactions into their structures.