“…The smaller the bridging chain, the greater the deformation of the purine p system. Sakata and coworkers [76][77][78] have investigated several purinophanes as models for stacking interactions of nucleic acid bases. The bathochromic shift of the n-p* transition is also a reflection of the molecular geometry, in particular with respect to the conformation of the amino group and its interaction with the aromatic p system.…”
“…The smaller the bridging chain, the greater the deformation of the purine p system. Sakata and coworkers [76][77][78] have investigated several purinophanes as models for stacking interactions of nucleic acid bases. The bathochromic shift of the n-p* transition is also a reflection of the molecular geometry, in particular with respect to the conformation of the amino group and its interaction with the aromatic p system.…”
Zur Untersuchung der Abhängigkeit der Hyperchromie von der reaktiven Lage zweier Purinringe werden dreifach verbrückte Purinophane als Modellverbindungen synthetisiert.
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