硅纳米晶体表面接枝聚(3-己基噻吩):具有直接界面接触的功能杂化材料的合成与性能。

Grafting Poly(3-hexylthiophene) from Silicon Nanocrystal Surfaces: Synthesis and Properties of a Functional Hybrid Material with Direct Interfacial Contact.

机构信息

Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.

Wacker-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.

出版信息

Angew Chem Int Ed Engl. 2016 Jun 20;55(26):7393-7. doi: 10.1002/anie.201601341. Epub 2016 May 4.

Abstract

Hybrid functional materials (HFMs) comprised of semiconductor nanoparticles and conjugated polymers offer the potential of synergetic photophysical properties. We have developed HFMs based upon silicon nanocrystals (SiNCs) and the conductive polymer poly(3-hexylthiophene) (SiNC@P3HT) by applying surface-initiated Kumada catalyst transfer polycondensation (SI-KCTP). One unique characteristic of the developed SiNC@P3HT is the formation of a direct covalent bonding between SiNCs and P3HT. The presented method for obtaining direct interfacial attachment, which is not accessible using other methods, may allow for the development of materials with efficient electronic communication at the donor-acceptor interfaces. Systematic characterization provides evidence of a core-shell structure, enhanced interfacial electron and/or energy transfer between the P3HT and SiNC components, as well as formation of a type-II heterostructure.

摘要

基于半导体纳米颗粒和共轭聚合物的杂化功能材料 (HFMs) 具有协同光物理性质的潜力。我们通过应用表面引发的 Kumada 催化剂转移缩聚 (SI-KCTP),开发了基于硅纳米晶体 (SiNCs) 和导电聚合物聚(3-己基噻吩) (SiNC@P3HT) 的 HFMs。所开发的 SiNC@P3HT 的一个独特特征是 SiNCs 和 P3HT 之间形成了直接共价键。与其他方法相比,这种获得直接界面附着的方法是不可用的,这可能允许开发在施主-受主界面具有有效电子通信的材料。系统的表征提供了核壳结构、P3HT 和 SiNC 组分之间增强的界面电子和/或能量转移以及形成 II 型异质结构的证据。

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