Inserting Porphyrin Quantum Dots in Bottom‐Up Synthesized Graphene Nanoribbons
作者:Wade Perkins、Felix R. Fischer
DOI:10.1002/chem.201705252
日期:2017.12.14
copolymerization of tetraphenylcyclopentadienone, a precursor for cove graphene nanoribbons (cGNRs), with bifunctional porphyrins yields defined nanostructures comprised of a single cGNR‐porphyrin‐cGNR heterojunction within each ribbon. 13C NMR labeling and high‐resolution mass spectrometry of solubilized polymer intermediates indicates that every porphyrin is covalently linked to two extended segments of
Diels-Alder共聚四苯基环戊二烯酮(一种海湾石墨烯纳米带(cGNRs)的前体)与双官能卟啉可产生定义的纳米结构,该纳米结构由每个碳带内的单个cGNR-卟啉-cGNR异质结组成。13溶解的聚合物中间体的13 C NMR标记和高分辨率质谱表明,每个卟啉均与cGNR的两个延伸段共价连接。UV / Vis吸收和荧光发射光谱揭示了卟啉与相邻cGNR段之间的强电子相关性,可通过卟啉核的可逆金属化作用来减弱这种相关性。这种通用的自下而上的合成策略可在单个石墨烯纳米带中访问结构明确,功能完善的GNR量子点GNR异质结构。
作者:F. Marshall Beringer、Louis Kravetz、Geraldine B. Topliss
DOI:10.1021/jo01015a046
日期:1965.4
Hellwinkel,D.; Wilfinger,H.-J., Phosphorus and the Related Group V Elements, 1976, vol. 6, p. 151 - 159
作者:Hellwinkel,D.、Wilfinger,H.-J.
DOI:——
日期:——
A Convenient Synthesis of Functionalized Dibenzotellurophenes and Related Compounds via the Intramolecular Telluro Coupling Reaction. The Positive Effect of Heavy Chalcogen Atoms on the Molecular Hyperpolarizability of a Captodative Conjugation System
Nitro-containing dibenzotellurophenes and related compounds, which are otherwise laborious to obtain, were prepared by the reaction of 2,2'-diiodobiphenyl derivatives with an in situ prepared tellurium-copper slurry. Partial reduction of 3,7-dinitrodibenzotellurophene using hydrazine hydrate/palladium on charcoal led to 3-amino-7-nitrodibenzotellurophene, which was found to exhibit a relatively large third-order molecular hyperpolarizability gamma (1.4 x 10(-31) esu) in the measurement of degenerated four-wave mixing (DFWM) as compared with 4-amino-4'-nitrobiphenyl and other previously reported compounds, confirming the positive effect of tellurium atom on the nonlinear optical property of a captodative conjugation system.
Larkem; Larkem, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 1, p. 175 - 180