Nagesha, K. ; Kabrab, D. ; Narayanb, K. S. ; Ramakrishnan, S. (2005) Modulating phase-separation in blends of MEHPPV-x with different conjugation lengths Synthetic Metals, 155 (2). pp. 295-298. ISSN 0379-6779
Full text not available from this repository.
Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.synthmet.2005.01.040
Abstract
We report here the phase- separation and energy transfer characteristics of segmented MEHPPV blends with two different distributions of conjugation lengths, namely MEHPPV- 8 (LC, low conjugation length) and MEHPPV- 100 (HC, high conjugation length). Thin films containing varying weight fractions of LC and HC were spin- cast from chloroform solutions. Photoluminescence studies of these thin films suggested that complete energy transfer from LC to HC occurred even though there was phase- separation. Selective chain- collapse of MEHPPV- 100 by using a solution containing increasing volume fraction of cyclohexane for spin- coating allowed one to modulate the extent of energy transfer to some extent- typically the extent of energy transfer decreased in the presence of high volume fraction of cyclohexane.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Segmented MEHPPV; MEHPPV-x Blends; Confocal Microscopy; UV-vis; Fluorescence of Polymer Blends |
| ID Code: | 60079 |
| Deposited On: | 08 Sep 2011 10:07 |
| Last Modified: | 08 Sep 2011 10:07 |
Repository Staff Only: item control page
