Reversible photoisomerization of monolayers of p-expanded oligothiophene macrocycles at solid-liquid interfaces

J.D. Cojal González, M. Iyoda, J.P. Rabe – 2018

Self‐assembled monolayers of a π‐expanded oligothiophene macrocycle undergo photoisomerization between their Z,Z and E,E diastereomers at the interface between octanoic acid solutions and highly oriented pyrolytic graphite (HOPG). The switching process proceeds in situ at the solid–liquid interface and was followed by scanning tunneling microscopy (STM). Upon illumination with light at 365 nm (546 nm), a monolayer of Z,Z‐8mer (E,E‐8mer) photoisomerizes to the E,E‐8mer (Z,Z‐8mer) form with changes in 2D hexagonal packing. These findings provide insight towards the design of photoresponsive surfaces with desirable optoelectronic and structural (host–guest) properties.

Titel
Reversible photoisomerization of monolayers of p-expanded oligothiophene macrocycles at solid-liquid interfaces
Verfasser
J.D. Cojal González, M. Iyoda, J.P. Rabe
Datum
2018
Kennung
10.1002/anie.201809514
Zitierweise
Angew. Chem. Int. Ed., 2018, 57, 17038-17042
Art
Text
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