Thermochromic effects in a Jahn-Teller active CuCl4-
                        6 layered hybrid system

A. Caretta; R. Miranti; A. H. Arkenbout; A. O. Polyakov; A. Meetsma; R. Hidayat; M. O. Tjia; T. T.M. Palstra; P. H.M. Van Loosdrecht

doi:10.1088/0953-8984/25/50/505901

Thermochromic effects in a Jahn-Teller active CuCl^4- ₆ layered hybrid system

A. Caretta, R. Miranti, A. H. Arkenbout, A. O. Polyakov, A. Meetsma, R. Hidayat, M. O. Tjia, T. T.M. Palstra, P. H.M. Van Loosdrecht

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

31 Citations (Scopus)

Abstract

The hybrid material copper (II) tetrachloro-bis(phenyl ethyl ammonium) (C6H5CH2CH2NH3)2CuCl4, or PEACuCl, has been investigated by temperature- dependent spectroscopic absorption experiments. The absorption bands observed in the near-infrared region (1.3-1.9 eV) generally exhibit redshifts with increasing temperature. The temperature-induced energy shifts of the spectral components are shown to be consistently related to temperature-induced Cu-Cl bond length changes. Additionally, the thermochromic color change is caused by a charge transfer band edge redshifting (in the visible region 2.0-2.8 eV) with increasing temperature. By comparison with similar Cu-based systems, it is suggested that this shift is caused by broadening and strengthening of the band.

Original language	English
Article number	505901
Journal	Journal of physics: Condensed matter
Volume	25
Issue number	50
DOIs	https://doi.org/10.1088/0953-8984/25/50/505901
Publication status	Published - 18 Dec 2013
Externally published	Yes

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title = "Thermochromic effects in a Jahn-Teller active CuCl4- 6 layered hybrid system",

abstract = "The hybrid material copper (II) tetrachloro-bis(phenyl ethyl ammonium) (C6H5CH2CH2NH3)2CuCl4, or PEACuCl, has been investigated by temperature- dependent spectroscopic absorption experiments. The absorption bands observed in the near-infrared region (1.3-1.9 eV) generally exhibit redshifts with increasing temperature. The temperature-induced energy shifts of the spectral components are shown to be consistently related to temperature-induced Cu-Cl bond length changes. Additionally, the thermochromic color change is caused by a charge transfer band edge redshifting (in the visible region 2.0-2.8 eV) with increasing temperature. By comparison with similar Cu-based systems, it is suggested that this shift is caused by broadening and strengthening of the band.",

author = "A. Caretta and R. Miranti and Arkenbout, {A. H.} and Polyakov, {A. O.} and A. Meetsma and R. Hidayat and Tjia, {M. O.} and Palstra, {T. T.M.} and {Van Loosdrecht}, {P. H.M.}",

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doi = "10.1088/0953-8984/25/50/505901",

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T1 - Thermochromic effects in a Jahn-Teller active CuCl4- 6 layered hybrid system

AU - Caretta, A.

AU - Miranti, R.

AU - Arkenbout, A. H.

AU - Polyakov, A. O.

AU - Meetsma, A.

AU - Hidayat, R.

AU - Tjia, M. O.

AU - Palstra, T. T.M.

AU - Van Loosdrecht, P. H.M.

PY - 2013/12/18

Y1 - 2013/12/18

N2 - The hybrid material copper (II) tetrachloro-bis(phenyl ethyl ammonium) (C6H5CH2CH2NH3)2CuCl4, or PEACuCl, has been investigated by temperature- dependent spectroscopic absorption experiments. The absorption bands observed in the near-infrared region (1.3-1.9 eV) generally exhibit redshifts with increasing temperature. The temperature-induced energy shifts of the spectral components are shown to be consistently related to temperature-induced Cu-Cl bond length changes. Additionally, the thermochromic color change is caused by a charge transfer band edge redshifting (in the visible region 2.0-2.8 eV) with increasing temperature. By comparison with similar Cu-based systems, it is suggested that this shift is caused by broadening and strengthening of the band.

AB - The hybrid material copper (II) tetrachloro-bis(phenyl ethyl ammonium) (C6H5CH2CH2NH3)2CuCl4, or PEACuCl, has been investigated by temperature- dependent spectroscopic absorption experiments. The absorption bands observed in the near-infrared region (1.3-1.9 eV) generally exhibit redshifts with increasing temperature. The temperature-induced energy shifts of the spectral components are shown to be consistently related to temperature-induced Cu-Cl bond length changes. Additionally, the thermochromic color change is caused by a charge transfer band edge redshifting (in the visible region 2.0-2.8 eV) with increasing temperature. By comparison with similar Cu-based systems, it is suggested that this shift is caused by broadening and strengthening of the band.

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IS - 50

M1 - 505901

ER -

Thermochromic effects in a Jahn-Teller active CuCl^4- ₆ layered hybrid system

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