Precise evaluation of adsorption behavior of cationic porphyrin on monolayer of perovskite-type niobia nanosheet by absorption spectroscopy
Precise evaluation of adsorption behavior of cationic porphyrin on monolayer of perovskite-type niobia nanosheet by absorption spectroscopy
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吸收光谱法精确评价单层钙钛矿型氧化铌纳米片对阳离子卟啉的吸附行为
DOI：
10.1016/j.jpcs.2021.110423
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发表时间：
2022
影响因子：
4
通讯作者：
Takagi Shinsuke
中科院分区：
文献类型：
--
作者：
Oshima Momoka;Sano Keito;Hirade Yugo;Nakazato Ryosuke;Ishida Tamao;Shimada Tetsuya;Takagi Shinsuke
为了准确和重复性地评价有机染料在纳米片表面的吸附行为，我们提出了一种基于吸收光谱的简单方法。选择了典型的阳离子染料5，10，15，20-四(1-甲基吡啶-4-基)卟啉(TMPyP)和阴离子纳米片钙钛矿型氧化铌纳米片(NNS)作为客体分子和宿主纳米片。TMPyP的λ最大吸收峰在纳米片上发生了红移。当TMPyP的负载量与吸光度的关系时，当TMPyP的加入量约为NNS阳离子交换容量的71%时，观察到明显的拐点。在这一点附近的吸光度区域观察到高度线性的曲线，这表明我们的实验方法可以用来详细地评价吸附行为，即使在很小的吸光度约为0.001数量级。基于吸收光谱评价染料在纳米片状单分子膜上的吸附行为有望成为详细讨论染料分子在固体表面行为的通用方法。
To evaluate adsorption behavior of organic dyes on nanosheet surface precisely and reproducibly, we are proposing simple method based on absorption spectroscopy. Typical cationic dye, 5,10,15,20-tetrakis (1-methylpyridinium-4-yl) porphyrin (TMPyP), and anionic nanosheet, perovskite-type niobia nanosheet (NNS), were selected as a guest molecule and a host nanosheet, respectively. Theλmaxof TMPyP was redshifted by an adsorption on the nanosheets. When the relationship between the loading level of TMPyP and absorbance, the clear inflection point was observed at approximately 71% of the amount of TMPyP added to the cation exchange capacity of NNS. A highly linear plots was observed in the absorbance region around this point, indicating that our experimental method can be used to evaluate the adsorption behavior in detail even at very small absorbance in the order of 0.001. The evaluation of the adsorption behavior of dyes on nanosheet monolayers based on absorption spectroscopy is expected to be a universal method to discuss the behavior of dye molecules on solid surfaces in detail.
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影响因子：
9.5
作者：
Yoonhyun Kim;Hyung-jun Kim;M. Osada;B. Li;Y. Ebina;T. Sasaki
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DOI：
10.1016/j.jphotochem.2017.08.003
发表时间：
2018
期刊：
J. Photochem. Photobiol. A
影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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作者：
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