Chun Wang
(, ), Yang Liu
(, ), Renlong Zhu
(, ), Tianpei Zhou
(, ), Minghao Wang
(, ), Han Cheng
(, ), Wenjie Wang
(, ), Xiaolin Tai
(, ), Lin Wang
(, ), Long Chen
(, ), Yue Lin
(, ), Shuji Ye
(, ), Yi Xie
(, ), Changzheng Wu
(, )
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引用次数: 0
Abstract
Layered inorganic materials provide an essential platform for constructing new structural configurations of materials with exceptional properties. However, precise control over the interlayer molecular arrangement remains a significant challenge, impeding in-depth exploration in physics and chemistry realm. Herein, we demonstrated a new layered organic-inorganic superlattice composed of a S-Ta-S inorganic lattice and bilayer linear molecules, providing superhigh heat insulation. A series of interlayer-confined intercalations of alkylamines with increasing chain length in the layered inorganic materials were achieved through precisely ordered molecule design (TaS2-Cn, n = 3, 6, 8, 12). Systematic spectral analysis reveals that as the length of the intercalated alkyl chain increases, the alkyl chain between layers becomes more ordered and linear, and the gauche conformation decreases. Furthermore, the more linear and ordered alkyl chain conformation results in lower thermal conductivity. The thermal conductivity of TaS2-C12 is 0.426 W m−1 K−1, which is only one-third that of the pristine TaS2 crystal. We anticipate that this layered organic-inorganic superlattice design will pave a new avenue for developing new organic-inorganic functional materials and probing the limits of ultralow thermal conductivity materials.
期刊介绍:
Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.