已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Longitudinal unzipping of carbon nanotubes to form graphene nanoribbons

石墨烯纳米带 石墨烯 材料科学 纳米技术 碳纳米管 化学气相沉积 石墨 制作 丝带 半导体 复合材料 光电子学 医学 病理 替代医学
作者
Dmitry V. Kosynkin,Amanda L. Higginbotham,Alexander Sinitskii,Jay R. Lomeda,Ayrat M. Dimiev,B. Katherine Price,James M. Tour
出处
期刊:Nature [Nature Portfolio]
卷期号:458 (7240): 872-876 被引量:3427
标识
DOI:10.1038/nature07872
摘要

Graphene nanoribbons (GNRs), elongated strips of graphite an atom thick, are tipped for a starring role in future electronic devices. Graphene is a conductor, but GNRs express different electronic properties depending on their width. This tunability may make them more attractive than carbon nanotubes in some applications. The production of GNRs in bulk is the next challenge. Here, a team from Rice University reports the production of 100-nm-wide nanoribbons from multi-walled carbon nanotubes by 'unzipping' them with permanganate in acid. The resulting graphene oxide is then reduced to restore electronic conductivity. The process can also make thinner GNRs by unzipping single-walled nanotubes, though more work is needed on ways of disentangling the ribbons produced by this route. Graphene nanoribbons have important electronic properties — as their width increases they change from semiconductor to semi-metal — but it has been difficult to make large quantities. To do so, Tour et al. simply longitudinally unzip multiwalled carbon nanotubes with permanganate in acid to form graphene oxide, which is then reduced to restore electronic conductivity. The ribbons are about 100 nm wide (thinner ones tend to 'mat'), and the authors use them to make field-effect transistors. Graphene, or single-layered graphite, with its high crystallinity and interesting semimetal electronic properties, has emerged as an exciting two-dimensional material showing great promise for the fabrication of nanoscale devices1,2,3. Thin, elongated strips of graphene that possess straight edges, termed graphene ribbons, gradually transform from semiconductors to semimetals as their width increases4,5,6,7, and represent a particularly versatile variety of graphene. Several lithographic7,8, chemical9,10,11 and synthetic12 procedures are known to produce microscopic samples of graphene nanoribbons, and one chemical vapour deposition process13 has successfully produced macroscopic quantities of nanoribbons at 950 °C. Here we describe a simple solution-based oxidative process for producing a nearly 100% yield of nanoribbon structures by lengthwise cutting and unravelling of multiwalled carbon nanotube (MWCNT) side walls. Although oxidative shortening of MWCNTs has previously been achieved14, lengthwise cutting is hitherto unreported. Ribbon structures with high water solubility are obtained. Subsequent chemical reduction of the nanoribbons from MWCNTs results in restoration of electrical conductivity. These early results affording nanoribbons could eventually lead to applications in fields of electronics and composite materials where bulk quantities of nanoribbons are required15,16,17.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
2秒前
3秒前
3秒前
研友_VZG7GZ应助rita4616采纳,获得10
3秒前
4秒前
orixero应助景穆采纳,获得10
4秒前
7秒前
了一发布了新的文献求助10
7秒前
jyy应助刘坦苇采纳,获得10
8秒前
Singularity应助ZHAOYUN采纳,获得10
8秒前
10秒前
CC完成签到,获得积分10
11秒前
DDD发布了新的文献求助10
12秒前
Hello应助yuko采纳,获得10
13秒前
14秒前
焦立超发布了新的文献求助10
16秒前
小飞飞完成签到,获得积分10
16秒前
科目三应助默默洋葱采纳,获得30
18秒前
19秒前
同学甲完成签到 ,获得积分10
19秒前
19秒前
20秒前
淡然的舞仙完成签到 ,获得积分10
22秒前
22秒前
健壮元绿完成签到 ,获得积分20
23秒前
风清扬应助完美的从波采纳,获得30
26秒前
Ahiterin发布了新的文献求助80
26秒前
yuko发布了新的文献求助10
26秒前
MoonYC完成签到,获得积分10
28秒前
31秒前
31秒前
32秒前
菠萝完成签到 ,获得积分10
33秒前
蜀黍完成签到 ,获得积分10
33秒前
choo完成签到,获得积分10
33秒前
Tales完成签到,获得积分10
33秒前
默默千亦完成签到 ,获得积分10
33秒前
hzx发布了新的文献求助10
36秒前
欣喜惜筠完成签到,获得积分10
37秒前
38秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976512
求助须知:如何正确求助?哪些是违规求助? 3520548
关于积分的说明 11203949
捐赠科研通 3257210
什么是DOI,文献DOI怎么找? 1798648
邀请新用户注册赠送积分活动 877835
科研通“疑难数据库(出版商)”最低求助积分说明 806555