TY - JOUR
T1 - Thermodynamic Self-Assembly of Two-Dimensional φ-Conjugated Metal-Porphyrin Covalent Organic Frameworks by "On-Site" Equilibrium Polymerization
AU - Tanoue, Ryota
AU - Higuchi, Rintaro
AU - Ikebe, Kiryu
AU - Uemura, Shinobu
AU - Kimizuka, Nobuo
AU - Stieg, Adam Z.
AU - Gimzewski, James K.
AU - Kunitake, Masashi
PY - 2014/3
Y1 - 2014/3
N2 - Two-dimensional-conjugated metal-porphyrin covalent organic frameworks were produced in aqueous solution on an iodine-modified Au(111) surface by "on-site" azomethine coupling of FeIII- 5,10,15,20-tetrakis(4- aminophenyl)porphyrin (FeTAPP) with terephthal dicarboxaldehyde and investigated in detail using in-situ scanning tunneling microscopy. Mixed covalent organic porphyrin frameworks consisting of FeTAPP and metal-free TAPP (H2TAPP) were prepared through simultaneous adsorption in a mixed solution as well as partial replacement of FeTAPP by H2TAPP in an as-prepared metal-porphyrin framework. In the mixed framework, the relative distribution of FeTAPP to H2TAPP was not random and revealed a preference for homo-connection rather than heteroconnection. The construction of substrate-supported,-conjugated covalent frameworks from multiple building blocks, including metal centers, will be of significant utility in the design of functional molecular nanoarchitectures
AB - Two-dimensional-conjugated metal-porphyrin covalent organic frameworks were produced in aqueous solution on an iodine-modified Au(111) surface by "on-site" azomethine coupling of FeIII- 5,10,15,20-tetrakis(4- aminophenyl)porphyrin (FeTAPP) with terephthal dicarboxaldehyde and investigated in detail using in-situ scanning tunneling microscopy. Mixed covalent organic porphyrin frameworks consisting of FeTAPP and metal-free TAPP (H2TAPP) were prepared through simultaneous adsorption in a mixed solution as well as partial replacement of FeTAPP by H2TAPP in an as-prepared metal-porphyrin framework. In the mixed framework, the relative distribution of FeTAPP to H2TAPP was not random and revealed a preference for homo-connection rather than heteroconnection. The construction of substrate-supported,-conjugated covalent frameworks from multiple building blocks, including metal centers, will be of significant utility in the design of functional molecular nanoarchitectures
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U2 - 10.1166/jnn.2014.8540
DO - 10.1166/jnn.2014.8540
M3 - Article
AN - SCOPUS:84894187114
SN - 1533-4880
VL - 14
SP - 2211
EP - 2216
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
IS - 3
ER -