Journal
LIQUID CRYSTALS
Volume 45, Issue 1, Pages 49-58Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2017.1293854
Keywords
2-benzothidiazoles; luminescence; liquid crystals; organic synthesis
Funding
- CNPq
- Fundacao de Amparo a Pesquisa do Estado da Bahia (PIBIC)
Ask authors/readers for more resources
A series of luminescent liquid crystals based on 4,7-diphenylethynyl-2,1,3-benzothiadiazole system was prepared and characterised. The molecules were planned varying number, length and position of the linear alkoxy/thioalkyl chains. Their mesomorphic properties were studied by differential scanning calorimetry, polarised optical microscopy and X-ray diffraction. The liquid crystalline properties were found to be dependent on the length, position and number of the peripheral alkoxy chains. It was observed preferentially smectic C and nematic phases whose stability increase with the elongation of the peripheral portion. Photophysical studies were performed in chloroform solution. These compounds displayed strong yellow photoluminescent properties in the visible region, with absorption patterns peaking around 400-450 nm and emission between 500-610 nm with good quantum yields. Also, solvatochromism studies were performed. [GRAPHICS] .
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