A new 3-D coordination polymer as a precursor for CuI-based thermoelectric composites

Shi Qiang Bai; Ivy Hoi Ka Wong; Nan Zhang; Karen Lin Ke; Ming Lin; David James Young; T. S.Andy Hor

doi:10.1039/c8dt03219j

A new 3-D coordination polymer as a precursor for CuI-based thermoelectric composites

Shi Qiang Bai, Ivy Hoi Ka Wong, Nan Zhang, Karen Lin Ke, Ming Lin, David James Young, T. S.Andy Hor

Research output: Contribution to journal › Article › peer-review

Abstract

Two complexes, [Cu₆I₆(L1)₃]_n (I) and [Cu₄I₄(L2)₂]_n (II) (L1 = 1,4-bis(phenylthio)but-2-yne; L2 = 1,4-bis(phenylthio)butane), as precursors for thermoelectric composites were prepared using a literature procedure. During the preparation of I, an unexpected 3-D polymorph [Cu₄I₄(L1)₂]_n (1) with a triclinic space group and an infinite [CuI]_n staircase structure was obtained. This new polymorph (1) exhibited the same structure at both room temperature and 173 K. Complexes 1 and II were therefore pyrolysed to composites 2 and 3, respectively, at 400 °C under a nitrogen gas flow. Composite 3 was pale in color with a low carbon content (0.05 wt%) and easily disassembled during handling. By comparison, the high carbon containing (10.2 wt%) composite 2 can be compressed into a robust, light pellet (density 3.58 g cm⁻³), which showed a moderate to high Seebeck coefficient (543-1308 μV K⁻¹) over the temperature range 70-240 °C.

Original language	English
Pages (from-to)	16292-16298
Number of pages	7
Journal	Dalton Transactions
Volume	47
Issue number	45
DOIs	https://doi.org/10.1039/c8dt03219j
Publication status	Published - 7 Dec 2018
Externally published	Yes

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title = "A new 3-D coordination polymer as a precursor for CuI-based thermoelectric composites",

abstract = "Two complexes, [Cu6I6(L1)3]n (I) and [Cu4I4(L2)2]n (II) (L1 = 1,4-bis(phenylthio)but-2-yne; L2 = 1,4-bis(phenylthio)butane), as precursors for thermoelectric composites were prepared using a literature procedure. During the preparation of I, an unexpected 3-D polymorph [Cu4I4(L1)2]n (1) with a triclinic space group and an infinite [CuI]n staircase structure was obtained. This new polymorph (1) exhibited the same structure at both room temperature and 173 K. Complexes 1 and II were therefore pyrolysed to composites 2 and 3, respectively, at 400 °C under a nitrogen gas flow. Composite 3 was pale in color with a low carbon content (0.05 wt%) and easily disassembled during handling. By comparison, the high carbon containing (10.2 wt%) composite 2 can be compressed into a robust, light pellet (density 3.58 g cm−3), which showed a moderate to high Seebeck coefficient (543-1308 μV K−1) over the temperature range 70-240 °C.",

author = "Bai, {Shi Qiang} and Wong, {Ivy Hoi Ka} and Nan Zhang and {Lin Ke}, Karen and Ming Lin and Young, {David James} and Hor, {T. S.Andy}",

year = "2018",

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doi = "10.1039/c8dt03219j",

language = "English",

volume = "47",

pages = "16292--16298",

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T1 - A new 3-D coordination polymer as a precursor for CuI-based thermoelectric composites

AU - Bai, Shi Qiang

AU - Wong, Ivy Hoi Ka

AU - Zhang, Nan

AU - Lin Ke, Karen

AU - Lin, Ming

AU - Young, David James

AU - Hor, T. S.Andy

PY - 2018/12/7

Y1 - 2018/12/7

N2 - Two complexes, [Cu6I6(L1)3]n (I) and [Cu4I4(L2)2]n (II) (L1 = 1,4-bis(phenylthio)but-2-yne; L2 = 1,4-bis(phenylthio)butane), as precursors for thermoelectric composites were prepared using a literature procedure. During the preparation of I, an unexpected 3-D polymorph [Cu4I4(L1)2]n (1) with a triclinic space group and an infinite [CuI]n staircase structure was obtained. This new polymorph (1) exhibited the same structure at both room temperature and 173 K. Complexes 1 and II were therefore pyrolysed to composites 2 and 3, respectively, at 400 °C under a nitrogen gas flow. Composite 3 was pale in color with a low carbon content (0.05 wt%) and easily disassembled during handling. By comparison, the high carbon containing (10.2 wt%) composite 2 can be compressed into a robust, light pellet (density 3.58 g cm−3), which showed a moderate to high Seebeck coefficient (543-1308 μV K−1) over the temperature range 70-240 °C.

AB - Two complexes, [Cu6I6(L1)3]n (I) and [Cu4I4(L2)2]n (II) (L1 = 1,4-bis(phenylthio)but-2-yne; L2 = 1,4-bis(phenylthio)butane), as precursors for thermoelectric composites were prepared using a literature procedure. During the preparation of I, an unexpected 3-D polymorph [Cu4I4(L1)2]n (1) with a triclinic space group and an infinite [CuI]n staircase structure was obtained. This new polymorph (1) exhibited the same structure at both room temperature and 173 K. Complexes 1 and II were therefore pyrolysed to composites 2 and 3, respectively, at 400 °C under a nitrogen gas flow. Composite 3 was pale in color with a low carbon content (0.05 wt%) and easily disassembled during handling. By comparison, the high carbon containing (10.2 wt%) composite 2 can be compressed into a robust, light pellet (density 3.58 g cm−3), which showed a moderate to high Seebeck coefficient (543-1308 μV K−1) over the temperature range 70-240 °C.

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A new 3-D coordination polymer as a precursor for CuI-based thermoelectric composites

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