Light-induced dilation in nanosheets of charge-transfer complexes.

ABSTRACT: We report the observation of a sizable photostrictive effect of 5.7% with fast, submillisecond response times, arising from a light-induced lattice dilation of a molecular nanosheet, composed of the molecular charge-transfer compound dibenzotetrathiafulvalene (DBTTF) and C₆₀ An interfacial self-assembly approach is introduced for the thickness-controlled growth of the thin films. From photoabsorption measurements, molecular simulations, and electronic structure calculations, we suggest that photostriction within these films arises from a transformation in the molecular structure of constituent molecules upon photoinduced charge transfer, as well as the accommodation of free charge carriers within the material. Additionally, we find that the photostrictive properties of the nanos

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC5899485 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature