| Title | Effects of chromophore conjugation length and concentration on the photostability of indoline-based nonlinear optical chromophore/polymer films |
| Publication Type | Journal Article |
| Year of Publication | 2015 |
| Authors | Kutuvantavida, Y., Williams G.V.M., Bhuiyan M.D.H., Raymond S.G., and Kay A.J. |
| Journal | Journal of Physical Chemistry C |
| Volume | 119 |
| Issue | 6 |
| Pagination | 3273 - 3278 |
| Date Published | 2015 |
| ISSN | 19327447 (ISSN) |
| Keywords | Amorphous films, Amorphous polycarbonates, Chromophore concentrations, Chromophore conjugation, Chromophores, Conjugation length, energy transfer, Excited states, Gas generators, nonlinear optical chromophore, Nonlinear optics, Nonradiative decays, Photo-stability, Singlet oxygen generation |
| Abstract | Photostability measurements were made on host-guest thin films containing nonlinear optical chromophores with an indoline donor and amorphous polycarbonate. We find that the indoline-based chromophores are nearly 10 times more photostable than an analogous compound previously studied and which has a dihydopyridine donor. There is an enhancement of the photostability with increasing chromophore concentration and conjugation length. This can be attributed to a reduction in the average separation between the chromophores and excited state singlet energy transfer to adjacent chromophores followed by eventual nonradiative decay. This leads to a reduction in the singlet oxygen generation rate as the chromophore concentration or conjugation length is increased. © 2015 American Chemical Society. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84923163587&partnerID=40&md5=463d35f561957c648345de9eb4e36504 |
| DOI | 10.1021/jp509293m |
