Stabilized photoemission from organic molecules in zero-dimensional hybrid Zn and Cd halides
Abstract
This work explores the utilization of a photoactive organic cation for the preparation of R2MCl4 (M = Zn, Cd; R = (E)-4-styrylpyridinium, C13H12N+). Here, the zero-dimensional crystal structures of R2MCl4 contain isolated tetrahedral anions [MCl4]2– separated by the organic cations R+, leading to flat bands around the optical band gap. In R2MCl4, the inorganic band gaps are sufficiently large to accommodate the organic molecular levels within, and therefore, the optical properties of R2MCl4 are determined by the organic cation. Our combined optical spectroscopy and density functional theory (DFT) studies confirm the attribution of the bright green photoluminescence demonstrated by R2MCl4 to the organic molecular emission. Importantly, the incorporation of the photoemissive organic cation R+ into the hybrid framework in R2MCl4 leads to a nearly two-fold enhancement of the light emission efficiency with the measured photoluminescence quantum yield (PLQY) values of 6.04%, 10.40% and 11.21% for RCl, R2ZnCl4 and R2CdCl4, respectively. In addition, the crystal structure of the hybrid R2MCl4 ensures a stabilized PL emission, preventing the occurrence of the harmful organic photodimerization, which is a notorious problem for this class of organic emitters.
- Authors:
-
[2];
[1]
- University of Oklahoma, Norman, OK (United States)
- Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States)
- Publication Date:
- Research Org.:
- Univ. of Oklahoma, Norman, OK (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1975552
- Alternate Identifier(s):
- OSTI ID: 1893229
- Grant/Contract Number:
- SC0021158; CHE-1726630
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Inorganic Chemistry Frontiers (Online)
- Additional Journal Information:
- Journal Name: Inorganic Chemistry Frontiers (Online); Journal Volume: 9; Journal Issue: 23; Journal ID: ISSN 2052-1553
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Creason, Tielyr D., Fattal, Hadiah, Gilley, Isaiah W., Evans, Brett N., Jiang, Jie, Pachter, Ruth, Glatzhofer, Daniel T., and Saparov, Bayram. Stabilized photoemission from organic molecules in zero-dimensional hybrid Zn and Cd halides. United States: N. p., 2022.
Web. doi:10.1039/d2qi01293f.
Creason, Tielyr D., Fattal, Hadiah, Gilley, Isaiah W., Evans, Brett N., Jiang, Jie, Pachter, Ruth, Glatzhofer, Daniel T., & Saparov, Bayram. Stabilized photoemission from organic molecules in zero-dimensional hybrid Zn and Cd halides. United States. https://doi.org/10.1039/d2qi01293f
Creason, Tielyr D., Fattal, Hadiah, Gilley, Isaiah W., Evans, Brett N., Jiang, Jie, Pachter, Ruth, Glatzhofer, Daniel T., and Saparov, Bayram. Wed .
"Stabilized photoemission from organic molecules in zero-dimensional hybrid Zn and Cd halides". United States. https://doi.org/10.1039/d2qi01293f. https://www.osti.gov/servlets/purl/1975552.
@article{osti_1975552,
title = {Stabilized photoemission from organic molecules in zero-dimensional hybrid Zn and Cd halides},
author = {Creason, Tielyr D. and Fattal, Hadiah and Gilley, Isaiah W. and Evans, Brett N. and Jiang, Jie and Pachter, Ruth and Glatzhofer, Daniel T. and Saparov, Bayram},
abstractNote = {This work explores the utilization of a photoactive organic cation for the preparation of R2MCl4 (M = Zn, Cd; R = (E)-4-styrylpyridinium, C13H12N+). Here, the zero-dimensional crystal structures of R2MCl4 contain isolated tetrahedral anions [MCl4]2– separated by the organic cations R+, leading to flat bands around the optical band gap. In R2MCl4, the inorganic band gaps are sufficiently large to accommodate the organic molecular levels within, and therefore, the optical properties of R2MCl4 are determined by the organic cation. Our combined optical spectroscopy and density functional theory (DFT) studies confirm the attribution of the bright green photoluminescence demonstrated by R2MCl4 to the organic molecular emission. Importantly, the incorporation of the photoemissive organic cation R+ into the hybrid framework in R2MCl4 leads to a nearly two-fold enhancement of the light emission efficiency with the measured photoluminescence quantum yield (PLQY) values of 6.04%, 10.40% and 11.21% for RCl, R2ZnCl4 and R2CdCl4, respectively. In addition, the crystal structure of the hybrid R2MCl4 ensures a stabilized PL emission, preventing the occurrence of the harmful organic photodimerization, which is a notorious problem for this class of organic emitters.},
doi = {10.1039/d2qi01293f},
journal = {Inorganic Chemistry Frontiers (Online)},
number = 23,
volume = 9,
place = {United States},
year = {Wed Oct 12 00:00:00 EDT 2022},
month = {Wed Oct 12 00:00:00 EDT 2022}
}
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