文献类型：期刊文献

英文题名：CO₂-Responsive Rosin-Based Supramolecular Hydrogels: Diverse Chiral Nanostructures and Their Application in In Situ Synthesis of Chiral Gold Nanoparticles

作者：Ye, Shengfeng[1,2,3] Zhang, Wenjing[1] Zhai, Zhaolan[1] Shang, Shibin[1] Huang, Lixin[1] Song, Zhanqian[1] Jiang, Jianxin[2]

第一作者：Ye, Shengfeng

通信作者：Zhai, ZL[1];Huang, LX[1]

机构：[1]Chinese Acad Forestry, Natl Forestry & Grassland Adm, Inst Chem Ind Forestry Prod, Natl Engn Lab Biomass Chem Utilizat,Key Lab Biomas, Nanjing 210042, Jiangsu, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Jiangsu, Peoples R China

年份：2023

卷号：40

期号：1

起止页码：647-656

外文期刊名：LANGMUIR

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001139526300001)】；

基金：This research was financially supported by the Fundamental Research Foundation of the Central Commonwealth Institute of the Chinese Academy of Forestry (CAFYBB2022QA005) and the National Natural Science Foundation of China (32001268).

语种：英文

摘要：Natural small molecules have demonstrated tremendous potential for the construction of supramolecular chiral nanostructures owing to their unique molecular structures and chirality. In this study, novel CO2-responsive supramolecular hydrogels were constructed using a series of rosin-based surfactants (C(n)MPAN, n = 10, 12, and 14). The macroscopic properties, rheological properties, nanostructures, and intermolecular interactions of the hydrogels were investigated using differential scanning calorimetry, rotational rheometry, cryogenic transmission electron microscopy, and Fourier transform infrared spectroscopy. Interestingly, diverse nanostructures containing helical nanofibers, interwoven nanofibers, and twisted nanoribbons were formed in the hydrogels, which were rarely observed in reported supramolecular hydrogels, and the strength of the hydrogels was significantly enhanced by increasing the C(n)MPAN concentration and the alkyl chain length. The obtained hydrogels exhibited excellent CO2-responsiveness, with no obvious variation in the nanostructures and rheological properties after response to CO2/N-2 for five cycles. Taking advantage of the chiral nanostructures of hydrogels, gold nanoparticles (GNPs) were further prepared. The average particle sizes of the resulting GNPs were as low as 2.5 nm, and the GNPs also had a chiral structure. It is worth noting that no additional reductants and UV-light irradiation were used during the reduction process of GNPs. This study emphasizes that the unique molecular structure and chirality of rosin are critical for the preparation of hydrogels with chiral nanostructures. In addition, this study enriches the applications of forest resources.