Title of article
Electronic properties of poly(1,4-phenylene methylidynenitrilo-1,4-phenylene nitrilomethylidyne) (PPI)
Author/Authors
Nart، نويسنده , , F.C. and Péres، نويسنده , , L.O. and de Sل، نويسنده , , E.L. and Roman، نويسنده , , L.S. and Hümmelgen، نويسنده , , I.A. and Gruber، نويسنده , , J. and Li، نويسنده , , R.W.C. Arnott، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 1997
Pages
5
From page
147
To page
151
Abstract
Poly(1,4-phenylene methylidynenitrilo-1,4-phenylene nitrilomethylidyne) (PPI) was prepared and investigated using UV spectroscopy and tunneling current measurements at metal/PPI interfaces. The difference between the LUMO and HOMO level energies of PPI is determined as well as its electron affinity. The measured shift of the LUMO level of PPI relative to unsubstituted poly(p-phenylene vinylene) (PPV) agrees with semi-empirical quantum mechanical calculations performed on the dimer using the CNDO/S method which predicts a stabilization of both LUMO and HOMO levels with respect to unsubstituted PPV.
Keywords
electron affinity , quantum mechanical calculations , Poly(1 , 4-phenylene methylidynenitrilo-1 , 4-phenylene nitrilomethylidyne) , Fowler—Nordheim plots
Journal title
Synthetic Metals
Serial Year
1997
Journal title
Synthetic Metals
Record number
2071583
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