363 / 2019-02-28 08:11:43

Pressure Induced Emission

Pressure Induced Emission,Exciton,Ligand

全体主题 > High Pressure Physics and Materials Science

The fluorescence of most luminescent materials exhibits a pressure caused quenching (PCQ). However, a few luminescent materials experience a pressure induced emission (PIE). Our group has revealed four mechanisms of PIE. The first is based on aggregation induced emission materials. Pressure will restrict the intramolecular rotation or vibration, thus decreasing the non-radiative transition, and resulting in the PIE of luminescent materials.[1-3] The second is based on the pressure-strengthened exciton binding energy, thus leading to the PIE.[4-7] The third is pressure-modulated transition channels, making the PIE of defects of materials. The fourth is the regulation of interaction between ligands and nanomaterials, which makes the PIE of a series of nanomaterials.[8] These results will enrich the research directions of high-pressure chemistry and show potential applications in the fields of pressure switches and pressure sensors.

References
[1] H. Yuan, K. Wang, K. Yang, B. Liu, and B. Zou, J. Phys. Chem. Lett. 5, 2968-2973 (2014)
[2] Y. Gu, K. Wang, Y. Dai, G. Xiao, Y. Ma, Y. Qiao, and B. Zou, J. Phys. Chem. Lett. 8, 4191-4196 (2017)
[3] S. Zhang, Y. Dai, Y. Gao, S. Luo, K. Wang, B. Zou, B. Yang, and Y. Ma, Adv. Funct. Mater. 27, 1602276 (2017)
[4] L. Zhang, C. Liu, L. Wang, C. Liu, K. Wang, and B. Zou, Angew. Chem. Int. Ed. 57, 11213-11217 (2018)
[5] Z. Ma, Z. Liu, S. Lu, L. Wang, X. Feng, D. Yang, K. Wang, G. Xiao, L. Zhang, S. A. T. Redfern, and B. Zou, Nature Commun. 9, 4506 (2018)
[6] L. Zhang, L. Wu, K. Wang, and B. Zou, Adv. Sci. 6, 201801628 (2019)
[7] Y. Chen, R. Fu, L. Wang, Z. Ma, G. Xiao, K. Wang, and B. Zou, J. Mater. Chem. A 7, DOI:10.1039/C8TA11992A (2019)
[8] G. Xiao, Y. Wang, D. Han, K. Li, X. Feng, K. Wang, L. Liu, S. A. T. Redfern, and B. Zou, J. Am. Chem. Soc. 140, 13970-13975 (2018)