Optical gap in herringbone and pi-stacked crystals of [1]benzothieno[3,2-b]benzothiophene and its brominated derivative

The optical gap of the organic semiconductor [1]benzothieno[3,2-b]benzothiophene and its 2,7-dibrominated analogue is measured in solution and in the crystalline state by means of UV-vis and emission spectroscopy. Bromination leads to a change in molecular packing from herringbone to pi-stacked, resulting in a marked shift in the absorption and emission spectra which is found to be in accordance with TDDFT calculations.


Published in:
Crystengcomm, 16, 32, 7389-7392
Year:
2014
Publisher:
Cambridge, Royal Soc Chemistry
ISSN:
1466-8033
Laboratories:




 Record created 2014-10-23, last modified 2018-09-13


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