Thermochromic effects in a Jahn–Teller active CuCl64– 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 CuCl64– 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

^*Corresponding author for this work

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
Number of pages	5
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

Keywords

STRUCTURAL PHASE-TRANSITIONS
(C2H5NH3)(2)CUCL4
SPECTROSCOPY
PEROVSKITES
PRESSURE
CRYSTAL

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Thermochromic effects in a Jahn–Teller active CuCl64– layered hybrid system
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@article{3f479549702d4bd09de9ea856c8307f5,

title = "Thermochromic effects in a Jahn–Teller active CuCl64– 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.",

keywords = "STRUCTURAL PHASE-TRANSITIONS, (C2H5NH3)(2)CUCL4, SPECTROSCOPY, PEROVSKITES, PRESSURE, CRYSTAL",

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.}",

note = "Relation: http://www.rug.nl/research/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials",

year = "2013",

month = dec,

day = "18",

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

language = "English",

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journal = "Journal of Physics-Condensed Matter",

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TY - JOUR

T1 - Thermochromic effects in a Jahn–Teller active CuCl64– 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.

N1 - Relation: http://www.rug.nl/research/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials

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.

KW - STRUCTURAL PHASE-TRANSITIONS

KW - (C2H5NH3)(2)CUCL4

KW - SPECTROSCOPY

KW - PEROVSKITES

KW - PRESSURE

KW - CRYSTAL

U2 - 10.1088/0953-8984/25/50/505901

DO - 10.1088/0953-8984/25/50/505901

M3 - Article

SN - 0953-8984

VL - 25

JO - Journal of Physics-Condensed Matter

JF - Journal of Physics-Condensed Matter

IS - 50

M1 - 505901

ER -

Thermochromic effects in a Jahn–Teller active CuCl64– layered hybrid system

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Keywords

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