Semiconducting Single‐Walled Carbon Nanotubes on Demand by Polymer Wrapping

Abstract

Efficient selection of semiconducting SWCNTs of large diameter range (0.8-1.6 nm) on demand is demonstrated. Different diameters of SWCNT are systematically selected by tuning the alkyl side-chain lengths of the wrapping polymers of similar backbone. The exceptional quality and high concentration of the SWCNTs is validated by the outstanding optical properties and the highly performing random network ambipolar field-effect transistors.

Photoinduced p‐ to n‐type Switching in Thermoelectric Polymer‐Carbon Nanotube Composites

“…[ 33 ] The efficiency and selectivity to particular CNT chiralities depends on a variety of factors, such as the type of polymer (determining the specifi c π-π interactions), the molecular weight of the polymer, and the length and type of side chains. [34][35][36][37] Here, we set out to investigate if n-type organic composites could be obtained by mixing a p-type conjugated polymer with nitrogen doped n-type CNTs. We chose poly(3-hexylthiophene) (P3HT) since it can show ambipolar transport [ 38 ] and can wrap around CNTs.…”

Inkjet Printed Single‐Walled Carbon Nanotube Based Ambipolar and Unipolar Transistors for High‐Performance Complementary Logic Circuits

“…[ 20,21 ] Among those, non-covalent functionalization through conjugated polymers chains is proving to be a powerful approach for the high-yield sorting of s-SWCNTs and the production of stable dispersions. [22][23][24][25][26] Following this approach, high mobility FETs, with values up to 33 cm 2 V −1 s −1 and on-off ratios up to 10 8 have been recently demonstrated by adopting coating techniques such casting or blade-coating. [ 21,24,27,28 ] Scalable printing techniques enabling the patterning of the semiconductor would also be important in allowing the deposition of controlled volumes in specifi c areas of circuits thus reducing materials waste, parasitism and enabling complex circuits fabrication.…”

“…[22][23][24][25][26] Following this approach, high mobility FETs, with values up to 33 cm 2 V −1 s −1 and on-off ratios up to 10 8 have been recently demonstrated by adopting coating techniques such casting or blade-coating. [ 21,24,27,28 ] Scalable printing techniques enabling the patterning of the semiconductor would also be important in allowing the deposition of controlled volumes in specifi c areas of circuits thus reducing materials waste, parasitism and enabling complex circuits fabrication. So far direct writing techniques, such as aerosoljet printing and inkjet printing, have been adopted to pattern non-sorted CNTs [ 29,30 ] and low purity s-SWCNTs [ 31 ] dispersed in different solvents, obtaining FETs with low on-off ratios and currents hysteresis.…”

Interação de nanotubos de carbono e cadeias de polifluoreno: Dinâmica molecular e espectroscopia

“…Descreveremos mais detalhadamente esse comportamento na Seção 2.2.3. Essa propriedade garante aos nanotubos grande potencial de aplicação em diversas áreas [5] , incluindo reforço mecânico de materiais [6] , eletrônica molecular, na forma de transistores moleculares [7][8][9] ou condutores entre esses dispositivos, geração e armazenamento de energia, aumentando a e ciência de células solares [10] , baterias de lítio [11] e armazenamento de hidrogênio para uso em células a combustível [12] , sensores químicos [13;14] -inclusive detectores de armas químicas [15] . Nanotubos também têm potencial para aplicações em medicina como no tratamento de câncer [16] e em microscopia, melhorando a resolução de microscópios de força atômica [17][18][19] .…”

“…Isso se observa através de medidas de absorção de luz e de uorescência, que con rmam que os tubos estão suspensos individualmente e que a suspensão privilegia tubos semicondutores [28;32] . Essas medidas também mostram que, no caso de nanotubos produzidos pelo método de monóxido de carbono de alta pressão (HiPCO), os tubos (8,6), (9,7), (8,7), (7,5) e (7,6), todos semicondutores com grande ângulo quiral, são os mais comumente observados em suspensão de PFO, em ordem decrescente de concentração. A seletividade dos poli uorenos depende fortemente do solvente utilizado e da cadeia lateral anexada à unidade de uoreno [33;34] , de forma que a seletividade parece estar relacionada às propriedades estruturais e geométricas do poli uoreno em solução de tolueno.…”