In this work, we present a straightforward method to attach a globular dendrimer at the reducing end of cellulose nanocrystals obtained from tunicates (t-CNC). We investigated the first four generations of poly(amidoamine) dendrimers (PAMAMs G0 to G3) to obtain hybrid t-CNCs. The aggregation behavior of hybrid t-CNCs was studied by dynamic light scattering (DLS) and scanning transmission electron microscopy (STEM); and interactions of these asymmetric nanoparticles with gold surface were elucidated using quartz crystal microbalance with dissipation (QCM-D) and surface plasmon resonance (SPR). Hybrid t-CNCs formed hairy layers onto gold surface combining the properties of rigid rod-like nanocrystals with globular and flexible PAMAM dendrimers. Moreover, the presence of amino groups provided pH-responsive properties to hybrid t-CNCs, and QCM-D results revealed reversible swelling/deswelling behavior. Thereby, we achieved to synthesize tree-shaped functional bio-based materials that adsorbed on gold and formed pH-responsive hairy surfaces.

在这项工作中，我们提出了一种直接的方法，将球状树状大分子连接到从被膜（t-CNC）获得的纤维素纳米晶体的还原端。我们调查了前四代的聚（酰胺基胺）树状大分子（PAMAM G0至G3）以获得杂种t-CNC。通过动态光散射（DLS）和扫描透射电子显微镜（STEM）研究了混合t-CNCs的聚集行为。并使用具有耗散的石英晶体微天平（QCM-D）和表面等离振子共振（SPR）阐明了这些不对称纳米粒子与金表面的相互作用。杂种t-CNC在金表面形成了毛状层，结合了刚性棒状纳米晶体的特性以及球形和柔性PAMAM树状聚合物。此外，氨基的存在为混合t-CNC提供了pH响应特性，QCM-D结果显示可逆的溶胀/溶胀行为。因此，我们实现了合成吸附在金上并形成pH响应毛状表面的树状功能性生物基材料。