Electronic and mechanical modification of single-walled carbon nanotubes by binding to porphyrin oligomers.
Electronic and mechanical modification of single-walled carbon nanotubes by binding to porphyrin oligomers.
复制标题
通过与卟啉低聚物结合对单壁碳纳米管进行电子和机械修饰。
作者：
S. Stranks;Johannes K. Sprafke;H. Anderson;R. Nicholas
我们报告共轭卟啉低聚物的非共价键结合到小直径的单壁碳纳米管（SWNTs），并突出两个显着的观察。首先，低聚物与单壁碳纳米管的结合是如此强烈，以至于它在溶液中诱导纳米管上的机械应变。应变的大小与固态研究中发现的应变相当。在任何其他SWNT-超分子复合物中均未观察到类似菌株。第二，随着低聚物长度的增加，聚合物带隙大幅减小，导致长链低聚物和小直径纳米管之间形成II型异质结。这是证明了通过观察增强的红移的纳米管带间跃迁。这些配合物为光伏器件提供了相当大的希望。
We report on the noncovalent binding of conjugated porphyrin oligomers to small diameter single-walled carbon nanotubes (SWNTs) and highlight two remarkable observations. First, the binding of the oligomers to SWNTs is so strong that it induces mechanical strain on the nanotubes in solution. The magnitudes of the strains are comparable to those found in solid-state studies. Comparable strains are not observed in any other SWNT-supramolecular complexes. Second, large decreases in polymer band gap with increasing length of the oligomer lead to the formation of a type-II heterojunction between long chain oligomers and small-diameter nanotubes. This is demonstrated by the observation of enhanced red-shifts for the nanotube interband transitions. These complexes offer considerable promise for photovoltaic devices.
影响因子：
15
作者：
Sedghi, Gita;Sawada, Katsutoshi;Nichols, Richard J.
通讯作者：
Nichols, Richard J.
影响因子：
15
作者：
Grozema, Ferdinand C.;Houarner-Rassin, Coralie;Anderson, Harry L.
通讯作者：
Anderson, Harry L.
影响因子：
10.8
作者：
Stranks, Samuel D.;Weisspfennig, Christian;Nicholas, Robin J.
通讯作者：
Nicholas, Robin J.