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http://hdl.handle.net/2289/7228| Title: | Liquid Crystals Decorated Gold Nanoparticles for Photoswitching Properties |
| Authors: | Rahman, Md. Lutfor Yuvaraj, A.R. Kumar, Sandeep +3Co-Authors |
| Keywords: | liquid crystals gold nanoparticles photoswitching molecular switches optical storage |
| Issue Date: | 23-Sep-2018 |
| Publisher: | General Chemistry |
| Citation: | General Chemistry, 2018, Vol.4, p180009 |
| Abstract: | Liquid crystals decorated gold nanoparticles are synthesized as the molecular architecture consists of the azobenzenes moieties with alkene as the peripheral units, which are connected to gold nanoparticles (Au-NPs) via thiolated phenolic units are in the middle. The morphology and mesomorphic properties were investigated by the field emission scanning electron microscope, high-resolution transmission electron microscopy, differential scanning calorimetry, and polarizing optical microscopy. The aromatic thiolated azobenzene moieties with gold nanoparticles showed smectic A phase with monotropic nature only appeared in the cooling cycle. HR-TEM measurement showed that the functionalized Au-NPs are well dispersed without any aggregation. However, the absorption spectrum of peripheral azobenzene units shows strong absorption maxima in the ultraviolet region at 378 nm due to π-π* transition. For n-π* transition, a weak absorption band is observed in the visible region at 472 nm. The photo-isomerization characteristic is measured using absorption spectroscopy. The photosatur- ation of Au-NPs is found at the time duration of 16 s. The thermal back relaxation is completed after the time interval of 70 min. Moreover, Au-NPs showed excellent stability towards photo-decay. Therefore, Au-NPs compound is suitable in the field of optical storage and molecular switching. |
| Description: | Open Access |
| URI: | http://hdl.handle.net/2289/7228 |
| ISSN: | 2414-3421(Online) |
| Alternative Location: | http://www.genchemistry.org/EN/10.21127/yaoyigc20180009 |
| Copyright: | 2018 General Chemistry |
| Additional information: | Supplementary Information Available |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2018_Green Chemistry_Vol.4_p180009.pdf Restricted Access | 559.39 kB | Adobe PDF | View/Open Request a copy | |
| 2018_Green Chemistry_Vol.4_p180009 Supplimentay Information.pdf Restricted Access | Open Access. | 376.13 kB | Adobe PDF | View/Open Request a copy |
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