Fan Ziyin, Chen Xuelian, Köhn Serrano Melissa, Schmalz Holger, Rosenfeldt Sabine, Förster Stephan, Agarwal Seema, Greiner Andreas
Chair of Macromolecular Chemistry II and Bayreuth Centre for Colloids and Interfaces, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth (Germany) http://www.mcii.uni-bayreuth.de/en/ag-greiner/index.html.
Chair of Physical Chemistry I, University of Bayreuth (Germany).
Angew Chem Int Ed Engl. 2015 Nov 23;54(48):14539-44. doi: 10.1002/anie.201506415. Epub 2015 Oct 6.
A template synthesis allows the preparation of monodisperse nanoparticles with high reproducibility and independent from self-assembly requirements. Tailor-made polymer cages were used for the preparation of nanoparticles, which were made of cross-linked macromolecules with pendant thiol groups. Gold nanoparticles (AuNPs) were prepared in the polymer cages in situ, by using different amounts of cages versus gold. The polymer cages exhibited a certain capacity, below which the AuNPs could be grown with excellent control over the size and shape. Control experiments with a linear diblock copolymer showed a continuous increase in the AuNP size as the gold feed increased. This completely different behavior regarding the AuNP size evolution was attributed to the flexibility of the polymer chain depending on cross-linking. Moreover, the polymer cages were suitable for the encapsulation of AgNPs, PdNPs, and PtNPs by the in situ method.
模板合成法能够制备出具有高重现性且无需自组装条件的单分散纳米颗粒。定制的聚合物笼用于制备纳米颗粒，这些聚合物笼由带有侧链硫醇基团的交联大分子构成。通过使用不同量的聚合物笼与金，在聚合物笼中原位制备金纳米颗粒（AuNP）。聚合物笼表现出一定的容量，在该容量以下，AuNP能够在尺寸和形状上得到极好的控制而生长。用线性二嵌段共聚物进行的对照实验表明，随着金进料量的增加，AuNP尺寸持续增大。这种关于AuNP尺寸演变的完全不同的行为归因于取决于交联的聚合物链的柔韧性。此外，聚合物笼适用于通过原位法封装银纳米颗粒（AgNP）、钯纳米颗粒（PdNP）和铂纳米颗粒（PtNP）。
