Articles written in Bulletin of Materials Science
Volume 34 Issue 5 August 2011 pp 1049-1051
Self-assembly properties of the trimeric 𝑝-phenylene vinylene derivative containing symmetrical endgroups of 𝑅-(+)-2-methylbutyric acid ester (ChTPV) in H2O/THF mixed solvents were studied by absorption, photoluminescence and circular dichroism (CD) spectra. The results indicate that ChTPV exhibits helical 𝐻-type nano-aggregates in 80% H2O/THFmixed solvents, and the negative exciton coupling suggests that the chromophoric dipoles are oriented in a counter-clockwise direction.
Volume 41 Issue 4 August 2018 Article ID 0111
We investigate the molecular orientation transition and resulting morphology of copper phthalocyanine (CuPc) thin films induced by solvent–vapour annealing (SVA) in detail. Seven solvents are utilized to tune the morphology of CuPcthin films. The morphology, crystalline structure and optical properties of the CuPc active layer were investigated through field emission scanning electronmicroscopy (FESEM),X-ray diffraction (XRD) and ultraviolet–visible (UV–Vis) absorption spectrum, respectively. The result demonstrates that morphology and structure are depended on the type of solvents. Thehigh crystallinity of the CuPc films with a larger grain size and less grain boundaries can be observed. As a result, the resistance of the conducting channel is decreased, leading to an improved performance of the organic field-effect transistor (OFET).
Volume 43, 2020
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