1992 Fiscal Year Final Research Report Summary
Electric-Field-Gated PHB and Photo-Induced Charge-Separation Processes in Polymer-Dye Thin Films at low temperatures
| Project/Area Number |
03453107
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
高分子物性・高分子材料（含機械材料）
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
HORIE Kazuyuki University of Tokyo, Faculty of Engineering, Professor, 工学部, 教授 (10013690)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YAMASHITA Takashi University of Tokyo, RCAST, Assistant, 先端科学技術研究センター, 助手 (70210416)
|
|---|
| Project Period (FY) |
1991 – 1992
|
| Keywords | Photochemical Hole Burning / PHB / Photon-Gate / Electric-field Gating / Dye-Semiconductor Complex Film / Photo-induced electron transfer / Two-color sensitized reaction / Low temperature Spectroscopy |
|---|
| Research Abstract |
In these years, the photon-gated photochemical hole buming (PHB) through two color sensitization and the electric-field-gated PHB in a semiconductor matrix were studied. As to the former topics, two-color-sensitized spectral holes of zinc tetratolyl tetrabenzoporphine (ZnTTBP) were observed not only in glycidyl azide polymers but also in the polymers containing acyloxyiminogroups and poly(vinyl-rho-azido benzal). The matrix polymers with higher triplet energy levels are supposed to provide better gating efficiencies.
In order to obtain a new system of gating by using semiconductor matrix with the electric field, transparent titanium oxide (TiO_2) films with molecularly doped ZnTTBP were tried to prepare with a sol-gel method. The transparent films were obtained when the annealing was limited below 100ﾟC, but the efficiency of PHB hole formation was very low and the gating effect by the application of electric field was not observed for these films. The films with annealing only up to 100ﾟC are not yet supposed to have a semiconductor property.
|
