Modular face-to-face assembly of multichromophore arrays that absorb across the complete UV-visible spectrum and into the near-IR.
Defined face-to-face structures of phthalocyanine and porphyrin chromophores can be prepared using a modular strategy that allows directional, stepwise construction. μ-Oxo linkage between the central group of 14 metalloid atoms Si and Ge ensures π-overlap between the macrocycles, and exciton coupling effects further extend the absorption profile to provide arrays that absorb across the whole UV-visible spectrum and into the near-IR. The strategy is sufficiently versatile to be extended to synthesis of higher defined oligomers and subsequent functionalization or attachment at either or both ends of the stack.
School of Chemistry, University of East Anglia, Norwich NR4 7TJ, UK.
Zhixin
Z
Zhao
Andrew N
AN
Cammidge
David L
DL
Hughes
Michael J
MJ
Cook