Department of Applied Physics, KTH - Royal Institute of Technology , 16440 Stockholm, Sweden.
Department of Micro and Nanosystems, KTH - Royal Institute of Technology , 10044 Stockholm, Sweden.
ACS Appl Mater Interfaces. 2017 Sep 13;9(36):30267-30272. doi: 10.1021/acsami.7b09265. Epub 2017 Aug 31.
Thiol-ene polymer/Si nanocrystal bulk hybrids were synthesized from alkyl-passivated Si nanocrystal (Si NC) toluene solutions. Radicals in the polymer provided a copassivation of "dark" Si NCs, making them optically active and leading to a substantial ensemble quantum yield increase. Optical stability over several months was confirmed. The presented materials exhibit the highest photoluminescence quantum yield (∼65%) of any solid-state Si NC hybrid reported to date. The broad tunability of thiol-ene polymer reactivity provides facile glass integration, as demonstrated by a laminated structure. This, together with extremely fast polymerization, makes the demonstrated hybrid material a promising candidate for light converting applications.
巯基-烯聚合物/硅纳米晶体块体杂化物是由烷基封端的硅纳米晶体（Si NC）甲苯溶液合成的。聚合物中的自由基为“暗”Si NC 提供了共封端，使其具有光学活性，并导致整体量子产率显著增加。经过数月的光学稳定性测试得到了确认。所提出的材料表现出迄今为止报道的任何固态 Si NC 杂化物中最高的光致发光量子产率（约 65%）。巯基-烯聚合物反应性的宽可调性提供了易于玻璃集成的方法，这通过层压结构得到了证明。这与极快的聚合速度相结合，使所展示的杂化材料成为光转换应用的有前途的候选材料。
