Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials

Chavez, III, Ramiro; Cai, Min; Tlach, Brian; Wheeler, David L.; Kaudal, Rajiv; Tsyrenova, Ayuna; Tomlinson, Aimee L.; Shinar, Ruth; Shinar, Joseph; Jeffries-EL, Malika

doi:10.1039/C5TC03622D

Title: Benzobisoxazole cruciforms: A tunable, cross-conjugated platform for the generation of deep blue OLED materials

Journal Article · Wed Jan 20 00:00:00 EST 2016 · Journal of Materials Chemistry C

DOI:https://doi.org/10.1039/C5TC03622D· OSTI ID:1259481

Chavez, III, Ramiro ^[1]; Cai, Min ^[2]; Tlach, Brian ^[1]; Wheeler, David L. ^[3]; Kaudal, Rajiv ^[2]; Tsyrenova, Ayuna ^[4]; Tomlinson, Aimee L. ^[3]; Shinar, Ruth ^[1]; Shinar, Joseph ^[2]; Jeffries-EL, Malika ^[1]

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)

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.

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Research Organization:: Ames Lab., Ames, IA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11358; 0116435; 0521063; 0849677; 1229354; 1413173

OSTI ID:: 1259481

Report Number(s):: IS-J-9011; JMCCCX

Journal Information:: Journal of Materials Chemistry C, Vol. 4, Issue 17; ISSN 2050-7526

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 38 works

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