The near infrared absorbance and near infrared photoluminescence intensity of several single-walled carbon nanotubes (SWNTs) with different chiralities in the same suspension were analyzed. Differing chirality of the SWNTs showed different spectral responses with adsorbed H2O2 and catechin. While the detection of the antioxidant effects of catechin and Japanese tea using hybrids of DNA and SWNTs have previously been reported, those studies did not focus on the effects of chirality of the SWNTs on near infrared spectra. Chirality of SWNTs is one of the most important parameters to determine SWNT physicochemical properties. For example, the responses of (10,5)/(8,7) were more drastic in contrast to (9,4), while the (6,5) SWNTs were inactive. The findings indicate that different information can be obtained using mixed chiralities of SWNTs. The data suggest that the chirality effects reported from various studies should be evaluated carefully, considering the different SWNT chiralities.

中文翻译：

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具有不同手性的单壁碳纳米管的各种响应：生物传感的建议

分析了几种不同手性的单壁碳纳米管（SWNTs）在同一悬浮液中的近红外吸光度和近红外光致发光强度。单壁碳纳米管的不同手性对吸附的 H2O2 和儿茶素表现出不同的光谱响应。虽然之前已经报道了使用 DNA 和 SWNT 的杂交体检测儿茶素和日本茶的抗氧化作用，但这些研究并未关注 SWNT 的手性对近红外光谱的影响。单壁碳纳米管的手性是确定单壁碳纳米管物理化学性质的最重要参数之一。例如，与 (9,4) 相比，(10,5)/(8,7) 的响应更为剧烈，而 (6,5) SWNT 则不活跃。研究结果表明，使用单壁碳纳米管的混合手性可以获得不同的信息。