文章信息/Info

Title:

Surface-enhanced Raman Spectroscopy in Several Complicated 3D Micro-/nano-structures

作者:

張艷; 黃高山; 邱騰; 梅永豐

1(復(fù)旦大學(xué)材料科學(xué)系，上海 200433，中國(guó)) 2(東南大學(xué)物理系，江蘇 南京 211189，中國(guó))

Author(s):

ZHANG Yan;  HUANG Gaoshan;  QIU Teng;  MEI Yongfeng

1(Department of Materials Science, Fudan University, Shanghai 200433, China) 2(Department of Physics, Southeast University, Nanjing 211189, Jiangsu, China)

關(guān)鍵詞:

表面增強(qiáng)拉曼散射; 卷曲微管; 多孔氧化鋁; 復(fù)合結(jié)構(gòu); 蝶翅結(jié)構(gòu)

Keywords:

surface-enhanced Raman scattering;  rolled-up microtubes;  porous anodic alumina;  composite structure;  butterfly wings structures

DOI:

10.7502/j.issn.1674-3962.2017.10.07

文獻(xiàn)標(biāo)志碼:

A

摘要:

表面增強(qiáng)拉曼散射基底的制備一直是表面增強(qiáng)拉曼散射技術(shù)最重要的研究領(lǐng)域，而且對(duì)于擴(kuò)大其研究范圍和應(yīng)用領(lǐng)域起著重要的作用。本文統(tǒng)計(jì)歸納了四種制備三維基底簡(jiǎn)單而新穎的方法，得到的表面增強(qiáng)拉曼活性基底具有重復(fù)性高、穩(wěn)定性好、增強(qiáng)因子大等優(yōu)點(diǎn)。第一種：利用自卷曲技術(shù)制備的卷曲微管陣列，微管陣列直徑可控，拉曼信號(hào)穩(wěn)定；第二種：采用多孔氧化鋁模板制備的三維陣列結(jié)構(gòu)，該陣列結(jié)構(gòu)光譜的譜形和強(qiáng)度呈現(xiàn)了極好的均一性；第三種：納米線或納米棒上原位生長(zhǎng)納米顆粒的三維復(fù)合結(jié)構(gòu)，該基底測(cè)量?jī)?yōu)勢(shì)在于不僅能夠在單位體積內(nèi)產(chǎn)生更多的“熱點(diǎn)”，而且會(huì)增加基底的比表面積來(lái)吸附更多的待測(cè)分子；第四種：使用蝴蝶翅膀?yàn)槟０逯苽涞娜�維精細(xì)微納結(jié)構(gòu)，該基底擁有極高的探測(cè)靈敏度以及良好的信號(hào)重現(xiàn)性。與低維度的表面增強(qiáng)拉曼散射基底相比，三維結(jié)構(gòu)具有更加優(yōu)越的性能以及一些單個(gè)粒子所不具備的新特性，能夠顯著提高表面增強(qiáng)拉曼散射信號(hào)檢測(cè)的靈敏性和重復(fù)性，也為進(jìn)一步的開(kāi)發(fā)表面增強(qiáng)拉曼散射應(yīng)用于實(shí)際檢測(cè)中創(chuàng)造了機(jī)會(huì)。

Abstract:

The fabrication of substrates with strong surface-enhanced Raman scattering (SERS) activity is one of the most important research focuses. The researches play an important role in exploring the applications of SERS. In this review article four simple and novel approaches for fabricating 3D micro-/nano-substrates have been demonstrated and the obtained SERS-active substrates have great advantages, such as high repeatability, good stability, and large enhancement factors.1. Rolled-up microtubes: the diameter of the microtube can be adjusted, and the SERS signal is stable. 2. Micro-/nano-structures fabricated by using porous anodic alumina templates: the Raman signal presents excellent uniformity. 3. Composite structures which combine nanoparticles with nanowires/nanorods: There are more “hot spots” and large specific surface area for absorbing molecules. 4. Micro/nano-structures produced using butterfly wings as templates: The substrates have high detection sensitivity and well signal reproducibility. Compared with low-dimensional SERS-active substrates, 3D micro-/nano-structures have more superior performance and new features as the sensitivity and the repeatability of SERS signal are significantly improved. The introduction of 3D micro-/nano-structures in this field may pave the way for practical applications of SERS.