Electronic Resource
Photoexcitations in Pernigraniline: Ring-Torsional Polarons and Bond- Order Solitons.
| العنوان: | Photoexcitations in Pernigraniline: Ring-Torsional Polarons and Bond- Order Solitons. |
|---|---|
| المؤلفون: | PENNSYLVANIA UNIV PHILADELPHIA DEPT OF CHEMISTRY, Leng, J. M., Ginder, J. M., McCall, R. P., Ye, H. J., Sun, Y. |
| المصدر: | DTIC AND NTIS |
| بيانات النشر: | 1991-08-07 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | We report the first near-steady-state and long time photoinduced- absorption spectroscopies of pernigraniline base, a novel Peierls ground state polymer with multiple order parameters. Two kinds of defects have been observed and distinguished by differing time domains and ir active vibrations. The short- lived defect has a lifetime of msec scale and a defect mass of -5 m; in contrast, the lifetime of the long lived defect (mass -300 m) is greater than several hours at low temperatures. We propose that the short-lived excitation is a soliton defect in the bond length (order parameter or alternation), while the long-lived excitation is a polaron defect in the ring torsion angle order parameter. |
| مصطلحات الفهرس: | Physical Chemistry, Radiation and Nuclear Chemistry, Polymer Chemistry, EXCITATION, POLYMERS, VIBRATION, PARAMETERS, GROUND STATE, MASS, TIME DOMAIN, REPRINTS, LENGTH, LONG LIFE, BONDING, LOW TEMPERATURE, SHORT RANGE(TIME), ANILINES, PHOTOCHEMICAL REACTIONS, ABSORPTION SPECTRA, PERNIGRANILINE, POLARONS, POLYANILINAS., Text |
| URL: | |
| الاتاحة: | Open access content. Open access content Approved for public release; distribution is unlimited. |
| ملاحظة: | text/html English |
| Other Numbers: | DTICE ADA239149 832059218 |
| المصدر المساهم: | From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.ocn832059218 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |