Journal
CHEMPLUSCHEM
Volume 84, Issue 9, Pages 1439-1448Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201900123
Keywords
dithienothiophenes; luminescence; pi-gels; organic semiconductors; sanidic mesogens
Categories
Funding
- National Natural Science Foundation of China [51773140, 51273133, 21772135] Funding Source: Medline
- NSFC-JSPS [50811140156] Funding Source: Medline
Ask authors/readers for more resources
Board-like liquid-crystalline semiconductors based on the dithieno[3,2-b;2 ',3 '-d]thiophene (DTT) substructure were synthesized and their thermal, self-assembly, optical, and semiconducting properties investigated. These sanidic compounds, bearing eight peripheral chains, are mesomorphic and spontaneously self-assemble into columnar hexagonal mesophases (Col(hex)) over broad temperature ranges, as confirmed by polarized optical microscopy, differential scanning calorimetry, and small-angle X-ray scattering. Strong blue photoluminescence with absolute quantum yields up to 33 % were measured. These compounds also form blue-light emitting gels in various organic solvents. The fibrillar-like morphology of these gels, reminiscent of the columnar structure, and stabilized by efficient intermolecular interactions, was characterized by scanning electron microscopy. The charge carrier mobility of these pi-extended mesogens was measured by time-of-flight transient photocurrent technique in the Col(hex) mesophase, and showed good hole-transport performance with charge carrier mobility of 10(-3) cm(2) V-1 s(-1).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available