Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials
Abstract
Four new cross-conjugated small molecules based on a central benzo[1,2-d:4,5-d']bisoxazole moiety possessing semi-independently tunable HOMO and LUMO levels were synthesized and the properties of these materials were evaluated experimentally and theoretically. The molecules were thermally stable with 5% weight loss occurring well above 350 °C. The cruciforms all exhibited blue emission in solution ranging from 433–450 nm. Host–guest OLEDs fabricated from various concentrations of these materials using the small molecule host 4,4'-bis(9-carbazolyl)-biphenyl (CBP) exhibited deep blue-emission with Commission Internationale de L'Eclairage (CIE) coordinates of (0.15 ≤ x ≤ 0.17, 0.05 ≤ y ≤ 0.11), and maximum luminance efficiencies as high as ~2 cd A–1. Lastly, these results demonstrate the potential of benzobisoxazole cruciforms as emitters for developing high-performance deep blue OLEDs.
- Authors:
-
- Iowa State Univ., Ames, IA (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Univ. of North Georgia, Dahlonega, GA (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States); National Univ. of Science & Technology (NUST MISiS), Moscow (Russia)
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1259481
- Report Number(s):
- IS-J-9011
Journal ID: ISSN 2050-7526; JMCCCX
- Grant/Contract Number:
- AC02-07CH11358; 0116435; 0521063; 0849677; 1229354; 1413173
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry C
- Additional Journal Information:
- Journal Volume: 4; Journal Issue: 17; Journal ID: ISSN 2050-7526
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Chavez, III, Ramiro, Cai, Min, Tlach, Brian, Wheeler, David L., Kaudal, Rajiv, Tsyrenova, Ayuna, Tomlinson, Aimee L., Shinar, Ruth, Shinar, Joseph, and Jeffries-EL, Malika. Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials. United States: N. p., 2016.
Web. doi:10.1039/C5TC03622D.
Chavez, III, Ramiro, Cai, Min, Tlach, Brian, Wheeler, David L., Kaudal, Rajiv, Tsyrenova, Ayuna, Tomlinson, Aimee L., Shinar, Ruth, Shinar, Joseph, & Jeffries-EL, Malika. Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials. United States. https://doi.org/10.1039/C5TC03622D
Chavez, III, Ramiro, Cai, Min, Tlach, Brian, Wheeler, David L., Kaudal, Rajiv, Tsyrenova, Ayuna, Tomlinson, Aimee L., Shinar, Ruth, Shinar, Joseph, and Jeffries-EL, Malika. Wed .
"Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials". United States. https://doi.org/10.1039/C5TC03622D. https://www.osti.gov/servlets/purl/1259481.
@article{osti_1259481,
title = {Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials},
author = {Chavez, III, Ramiro and Cai, Min and Tlach, Brian and Wheeler, David L. and Kaudal, Rajiv and Tsyrenova, Ayuna and Tomlinson, Aimee L. and Shinar, Ruth and Shinar, Joseph and Jeffries-EL, Malika},
abstractNote = {Four new cross-conjugated small molecules based on a central benzo[1,2-d:4,5-d']bisoxazole moiety possessing semi-independently tunable HOMO and LUMO levels were synthesized and the properties of these materials were evaluated experimentally and theoretically. The molecules were thermally stable with 5% weight loss occurring well above 350 °C. The cruciforms all exhibited blue emission in solution ranging from 433–450 nm. Host–guest OLEDs fabricated from various concentrations of these materials using the small molecule host 4,4'-bis(9-carbazolyl)-biphenyl (CBP) exhibited deep blue-emission with Commission Internationale de L'Eclairage (CIE) coordinates of (0.15 ≤ x ≤ 0.17, 0.05 ≤ y ≤ 0.11), and maximum luminance efficiencies as high as ~2 cd A–1. Lastly, these results demonstrate the potential of benzobisoxazole cruciforms as emitters for developing high-performance deep blue OLEDs.},
doi = {10.1039/C5TC03622D},
journal = {Journal of Materials Chemistry C},
number = 17,
volume = 4,
place = {United States},
year = {Wed Jan 20 00:00:00 EST 2016},
month = {Wed Jan 20 00:00:00 EST 2016}
}
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