Synthesis of porphyrins bearing uracyl groups and their assembly induced by melamine derivatives

Polymers for Advanced Technologies

Volumn 18, Issue 6, 2007, Pages 497-501

  Arai, Satoshi ^a   Ohshiro, Hiroki ^a   Nishide, Hiroyuki ^a   Takeoka, Shinji ^a  

^a WASEDA UNIVERSITY   (Japan)

Author keywords

Biomimetic; Supramolecular structures; Synthesis

Indexed keywords

BIOMIMETICS; HYDROGEN BONDS; MELAMINE; STRUCTURE (COMPOSITION); SUPRAMOLECULAR CHEMISTRY; SYNTHESIS (CHEMICAL);

TETRAPHENYL PORPHYRIN; URACYL GROUPS;

PORPHYRINS;

BIOMIMETICS; HYDROGEN BONDS; MELAMINE; PORPHYRINS; STRUCTURE (COMPOSITION); SUPRAMOLECULAR CHEMISTRY; SYNTHESIS (CHEMICAL);

BIOMIMETIC MATERIAL; BONDING; CONDENSATION; MOLECULAR STRUCTURE; SCANNING ELECTRON MICROSCOPY; SYNTHESIS;

EID: 34250633585     PISSN: 10427147     EISSN: 10991581     Source Type: Journal    
DOI: 10.1002/pat.894     Document Type: Article

References (16)

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12. Drain CM, et al. reported that meso-5,10-substituted uracyl porphyrin tended to form tetrameric closed structure (Ref. 2). In our report, UP5,10 porphyrin migtht form an unspecific closed structure; however, the structure in detail was obscure due to low crystallinity.
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15. When UP5,15 was mixed with Ph-Mela in benzene, the amino groups at 5.06 ppm and the amide groups at 6.96 ppm of Ph-Mela shifted to 6.90 ppm and 9.10 ppm, respectively, with broadening. The latter peak could not be exactly characterized because the peak around 9.10 ppm overlapped with the peaks of the β-H protons of UP5,15. The broadened peaks of the amide group of UP5,15 appeared around 12-13 ppm.
16. The only Glu-Mela can form the ordered structure due to the interaction of the alkyl chains and the formation of a homocomplementary hydrogen-bonded system. Indeed, the POM image of the cast film from the benzene solution of Glu-Mela showed an anisotropic phase. See the example; Thalacker C, Würthner F, Chiral perylene bisimide-melamine assemblies: hydrogen bond-directed growth of helically stacked dyes with chiroptical properties. Adv. Funct. Mater. 2002; 12: 209.