التفاصيل البيبلوغرافية
| العنوان: |
One-shot K-region-selective annulative π-extension for nanographene synthesis and functionalization |
| المؤلفون: |
Kyohei Ozaki, Katsuaki Kawasumi, Mari Shibata, Hideto Ito, Kenichiro Itami |
| المصدر: |
Nature, Nature Communications. 6(1):1-8 |
| سنة النشر: |
2015 |
| الوصف: |
The optoelectronic nature of two-dimensional sheets of sp2-hydridized carbons (for example, graphenes and nanographenes) can be dramatically altered and tuned by altering the degree of π-extension, shape, width and edge topology. Among various approaches to synthesize nanographenes with atom-by-atom precision, one-shot annulative π-extension (APEX) reactions of polycyclic aromatic hydrocarbons hold significant potential not only to achieve a ‘growth from template’ synthesis of nanographenes, but also to fine-tune the properties of nanographenes. Here we describe one-shot APEX reactions that occur at the K-region (convex armchair edge) of polycyclic aromatic hydrocarbons by the Pd(CH3CN)4(SbF6)2/o-chloranil catalytic system with silicon-bridged aromatics as π-extending agents. Density functional theory calculations suggest that the complete K-region selectivity stems from the olefinic (decreased aromatic) character of the K-region. The protocol is applicable to multiple APEX and sequential APEX reactions, to construct various nanographene structures in a rapid and programmable manner. |
| نوع الوثيقة: |
redif-article |
| اللغة: |
English |
| DOI: |
10.1038/ncomms7251 |
| الإتاحة: |
https://ideas.repec.org/a/nat/natcom/v6y2015i1d10.1038_ncomms7251.html |
| رقم الأكسشن: |
edsrep.a.nat.natcom.v6y2015i1d10.1038.ncomms7251 |
| قاعدة البيانات: |
RePEc |
