## Abstract An equipment for measuring the photoconduction of polymeric material is described comprehensively. The electrical dark conductivities (σ ≤ 2,5 · 10^−9^ Ω^−1^ · cm^−1^) and the photoconduction (__I__~phot~ ≤ 2,0 · 10^−10^ A) were studied for polymeric cyanines and corresponding model com
Synthesen und charakterisierung polymerer cyaninfarbstoffe
✍ Scribed by Koßmehl, Gerhard ;Bocionek, Peter
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1981
- Weight
- 772 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0025-116X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
From 2,3,5,6‐tetramethylthiazolo[4,5‐f]benzothiazoldiium diperchlorate (9) and the ortho esters 2a–d or 1,1,3,3‐tetramethoxypropane (4) polymeric cyanines with trimethine (10a), substituted trimethine (10b–d), respectively pentamethine units (11) were synthesized. Model compounds (3a–e, 5, 7a–d, 8) were prepared from 1a, 1b and 6, analogously. The structures were confirmed by elemental analyses, IR, and electronic spectra. In addition, the model compounds were characterized by their ^1^H NMR and mass spectra.
📜 SIMILAR VOLUMES
## Einleitung Unter Nachwirkungserscheinungen werden bei festen, nicht kristallinen Stoffen bekanntlich Eigenschaftsanderungen verstanden, die unterhalb der Glastemperatur ablaufen. Diese sind eng verbunden mit den Vorgangen bei der glasigen Erstarrung, wo nach Uberschreiten einer gewissen Grenzvi