School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 2001 Longxiang Avenue, Shenzhen 518172 Guangdong, China.
Langmuir. 2022 Jul 5;38(26):8160-8168. doi: 10.1021/acs.langmuir.2c01136. Epub 2022 Jun 22.
We report a mussel-inspired strategy of polydopamine (PDA) coating to stabilize and functionalize -aggregate nanotubes (NTs) formed by supramolecular self-assembly of an amphiphilic cyanine dye called C8S3 in aqueous media. Optimization of the coating condition by changing the incubation time in a slightly basic media of dopamine with different concentrations leads to conformal wrapping of the PDA layer with controllable thickness on the surface of the NTs. Compared to noncoated pristine C8S3 NTs, these PDA-coated NTs show enhanced stability against dilution, heating, and photobleaching. Moreover, the PDA layer wrapping around the NTs serves as an adhesive for the adsorption of a variety of metal ions and electroless deposition of the metal nanoparticles. Such stabilized and functionalized NT composites may offer a robust synthetic -aggregate system to mimic the structure and function of light-harvesting complexes and reaction centers in photosynthetic systems.
我们报告了一种受贻贝启发的聚多巴胺（PDA）涂层策略，用于稳定和功能化由两亲性菁染料 C8S3 在水介质中通过超分子自组装形成的β-聚集纳米管（NTs）。通过改变多巴胺在不同浓度碱性介质中的孵育时间来优化涂层条件，导致 PDA 层在 NTs 表面形成具有可控厚度的共形包裹。与未涂层的原始 C8S3 NTs 相比，这些 PDA 涂层的 NTs 在稀释、加热和光漂白方面表现出增强的稳定性。此外，包裹在 NTs 周围的 PDA 层可用作吸附各种金属离子和无电沉积金属纳米粒子的粘合剂。这种稳定和功能化的 NT 复合材料可能提供一个稳健的合成聚集系统，以模拟光合作用系统中光捕获复合物和反应中心的结构和功能。
