Jang, Daewoong ; Pramanik, Sumit Kumar ; Das, Amitava ; Baek, Woohyun ; Heo, Jung-Moo ; Ro, Hyun-Joo ; Jun, Sangmi ; Park, Bum Jun ; Kim, Jong-Man (2019) Photoinduced Reversible Bending and Guest Molecule Release of Azobenzene-Containing Polydiacetylene Nanotubes Scientific Reports, 9 (1). ISSN 2045-2322
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Official URL: http://doi.org/10.1038/s41598-019-52462-5
Related URL: http://dx.doi.org/10.1038/s41598-019-52462-5
Abstract
Creation of hollow, one-dimensional nanomaterials has gained great recent attention in the chemical and material sciences. In a study aimed at discovering new functional materials of this type, we observed that an amphiphilic diacetylene (DA) derivative, containing an azobenzene moiety and an oligo-ethylene group, self-assembles to form nanotubes and undergoes photopolymerization to form hollow polydiacetylene (PDA) nanotubes with a uniform wall thickness and diameter. The azobenzene-PDA nanotubes are photoresponsive in that on-and-off UV-irradiation leads to a reversible morphological change between straight and bent forms in association with E-Z photoisomerization of the azobenzene group. Owing to the UV-induced structural change feature, the new DA and PDA nanotubes serve as a controlled release material. Accordingly, fluorescent rhodamine B encapsulated inside the nanotubes are effectively released by using repeated on-off UV irradiation. Furthermore, photo-release of rhodamine B was shown to occur in an artemia (brine shrimp).
Item Type: | Article |
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Source: | Copyright of this article belongs to Nature Publishing Group. |
ID Code: | 135437 |
Deposited On: | 24 Jan 2023 05:14 |
Last Modified: | 24 Jan 2023 05:14 |
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