Helicity Control in the Aggregation of Achiral Squaraine Dyes in Solution and Thin Films.

摘要: Squaraine dyes are well known for their strong absorption in the visible regime. Reports on chiral squaraine are, however, scarce. To address this gap, we here report two novel and achiral counterparts. The presented aggregated solution thin films. A detailed chiroptical study shows that films formed by co-assembling dye with its counterpart exhibit exceptional photophysical properties. circular dichroism (CD) of co-assembled structures reaches a maximum when just 25 % present mixture. solid highest relative CD effect achieved is used solely as director, rather than structural component. data further supported selected spin-filtering measurements using mc-AFM. These findings provide promising platform investigating relationship between dissymmetry supramolecular structure emerging material properties comparison molecular an counterpart.