Preserving π-conjugation in covalently functionalized carbon nanotubes for optoelectronic applications.
Preserving π-conjugation in covalently functionalized carbon nanotubes for optoelectronic applications.
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DOI：
10.1038/ncomms14281
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发表时间：
2017-01-30
影响因子：
16.6
通讯作者：
Reich S
中科院分区：
文献类型：
--
作者：
Setaro A;Adeli M;Glaeske M;Przyrembel D;Bisswanger T;Gordeev G;Maschietto F;Faghani A;Paulus B;Weinelt M;Arenal R;Haag R;Reich S
共价功能化为碳纳米管在不同环境中的广泛应用量身定制。它的强度和稳定性是以破坏碳纳米管sp2网络和破坏碳纳米管的电子和光电子特性为代价的。在这里，我们提出了一种非破坏性的，共价的，克级功能化的单壁碳纳米管，通过一个新的[2+1]环加成。该反应重建了扩展π-网络，从而保留了碳纳米管杰出的量子光电特性，包括在高功能化程度（每25个碳原子有1个基团）下发出明亮的光。本文描述的共轭方法为先进的定制纳米管开辟了道路，通过光致变色分子开关和具有增强红外光发射的纳米等离子体金-纳米管杂化物，证明了光触发的可逆掺杂。虽然碳纳米管的共价改性使其具有广泛的应用，但它往往会导致其光电特性的破坏。在这里，作者设计了一个环加成反应，保留了纳米管的电子结构。
Covalent functionalization tailors carbon nanotubes for a wide range of applications in varying environments. Its strength and stability of attachment come at the price of degrading the carbon nanotubes sp2 network and destroying the tubes electronic and optoelectronic features. Here we present a non-destructive, covalent, gram-scale functionalization of single-walled carbon nanotubes by a new [2+1] cycloaddition. The reaction rebuilds the extended π-network, thereby retaining the outstanding quantum optoelectronic properties of carbon nanotubes, including bright light emission at high degree of functionalization (1 group per 25 carbon atoms). The conjugation method described here opens the way for advanced tailoring nanotubes as demonstrated for light-triggered reversible doping through photochromic molecular switches and nanoplasmonic gold-nanotube hybrids with enhanced infrared light emission. While covalent modification of carbon nanotubes allows their use in a wide range of applications, it often results in disruption of their optoelectronic properties. Here, the authors design a cycloaddition reaction that preserves the nanotubes electronic structure.