Piezochromism

Piezochromism describes the tendency of certain materials to change color with the application of pressure. This effect is closely related to the electronic band gap change, which can be found in plastics, semiconductors (e.g. hybrid perovskites)[1][2][3] and hydrocarbons[4].

References
  1. Zhang, Rong; Cai, Weizhao; Bi, Tiange; Zarifi, Niloofar; Terpstra, Tyson; Zhang, Chuang; Verdeny, Z. Valy; Zurek, Eva; Deemyad, Shanti (2017). "Effects of Nonhydrostatic Stress on Structural and Optoelectronic Properties of Methylammonium Lead Bromide Perovskite". The Journal of Physical Chemistry Letters. 8 (15): 3457–3465. doi:10.1021/acs.jpclett.7b01367. PMID 28691486.
  2. Zhang, Long; Liu, Chunming; Wang, Lingrui; Liu, Cailong; Wang, Kai; Zou, Bo (2018). "Pressure‐Induced Emission Enhancement, Band‐Gap Narrowing, and Metallization of Halide Perovskite Cs3Bi2I9". Angewandte Chemie International Edition. 57 (35): 11213–11217. doi:10.1002/anie.201804310. PMID 30010235.
  3. Szafrański, Marek; Katrusiak, Andrzej (2016). "Mechanism of Pressure-Induced Phase Transitions, Amorphization, and Absorption-Edge Shift in Photovoltaic Methylammonium Lead Iodide". The Journal of Physical Chemistry Letters. 7 (17): 3458–3466. doi:10.1021/acs.jpclett.6b01648. PMID 27538989.
  4. Cai, Weizhao; Zhang, Rong; Yao, Yansun; Deemyad, Shanti (2017). "Piezochromism and structural and electronic properties of benz[a]anthracene under pressure". Phys. Chem. Chem. Phys. 19 (8): 6216–6223. Bibcode:2017PCCP...19.6216C. doi:10.1039/C6CP08171A. PMID 28230219.


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