Peptide-induced hierarchical long-range order and photocatalytic activity of porphyrin assemblies.
Long-range structural order and alignment over different scales are of key importance for the regulation of structure and functionality in biology. However, it remains a great challenge to engineer and assemble such complex functional synthetic systems with order over different length scales from simple biologically relevant molecules, such as peptides and porphyrins. Herein we describe the successful introduction of hierarchical long-range order in dipeptide-adjusted porphyrin self-assembly by a thermodynamically driven self-orienting assembly pathway associated with multiple weak interactions. The long-range order and alignment of fiber bundles induced new properties, including anisotropic birefringence, a large Stokes shift, amplified chirality, and excellent photostability as well as sustainable photocatalytic activity. We also demonstrate that the aligned fiber bundles are able to induce the epitaxially oriented growth of Pt nanowires in a photocatalytic reaction.
National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190 Beijing (China) http://www.yan-assembly.org/; University of Chinese Academy of Sciences, Beijing 100049 (China).
Kai
K
Liu
Ruirui
R
Xing
Chengjun
C
Chen
Guizhi
G
Shen
Linyin
L
Yan
Qianli
Q
Zou
Guanghui
G
Ma
Helmuth
H
Möhwald
Xuehai
X
Yan
D002384:Catalysis; D046529:Microscopy, Electron, Transmission; D010455:Peptides / Q000494:pharmacology*; D010777:Photochemistry; D011166:Porphyrins / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D010455:Peptides; D011166:Porphyrins
fiber bundles; hierarchical long-range order; peptides; porphyrinoids; self-assembly