Azobenzene molecular glasses with tuned glass transition temperatures : from optimal light‐induced motion to self‐erasable gratings
dc.contributor.author | Diggins, Austin | |
dc.contributor.author | Dawson, Eoin | |
dc.contributor.author | Kamaliardakani, Mahnaz | |
dc.contributor.author | Pellerin, Christian | |
dc.contributor.author | Sabat, Ribal Georges | |
dc.contributor.author | Lebel, Olivier | |
dc.date.accessioned | 2021-06-29T12:26:48Z | |
dc.date.available | NO_RESTRICTION | fr |
dc.date.available | 2021-06-29T12:26:48Z | |
dc.date.issued | 2020-04-01 | |
dc.identifier.uri | http://hdl.handle.net/1866/25314 | |
dc.publisher | Royal Society of Chemistry | fr |
dc.title | Azobenzene molecular glasses with tuned glass transition temperatures : from optimal light‐induced motion to self‐erasable gratings | fr |
dc.type | Article | fr |
dc.contributor.affiliation | Université de Montréal. Faculté des arts et des sciences. Département de chimie | fr |
dc.identifier.doi | 10.1039/D0TC00393J | |
dcterms.abstract | The rate of photomechanical formation of surface relief gratings (SRG) in thin films of azobenzene materials depends on their glass transition temperature (Tg), with an optimal Tg around 50–60 °C yielding the fastest SRG growth. Herein, the SRG growth of five analogous Disperse Red 1 molecular glasses with Tg values ranging from 9 to 71 °C was studied with two different laser wavelengths (488 and 532 nm). It was found that the optimal Tg for SRG growth increases with laser irradiance, from approximately 50 °C at 100 mW cm−2 to over 70 °C at 300 mW cm−2. Furthermore, the azobenzene glass with a sub-ambient Tg of 9 °C can inscribe self-erasable gratings that collapse spontaneously when irradiation is stopped in a repeatable fashion, thereby paving the way for light-controlled optical devices. | fr |
dcterms.isPartOf | urn:ISSN:2050-7526 | fr |
dcterms.language | eng | fr |
UdeM.ReferenceFournieParDeposant | 10.1039/D0TC00393J | fr |
UdeM.VersionRioxx | Version acceptée / Accepted Manuscript | fr |
oaire.citationTitle | Journal of materials chemistry. C | fr |
oaire.citationVolume | 8 | fr |
oaire.citationStartPage | 6203 | fr |
oaire.citationEndPage | 6213 | fr |
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