- 著者
- Genki Nakamura Kaori Narimatsu Yasuro Niidome Naotoshi Nakashima
- 出版者
- The Chemical Society of Japan
- 雑誌
- Chemistry Letters (ISSN:03667022)
- 巻号頁・発行日
- vol.36, no.9, pp.1140-1141, 2007-09-05 (Released:2007-08-11)
- 参考文献数
- 26
- 被引用文献数
- 43
We describe the finding that green tea and catechins individually dissolve single-walled carbon nanotubes (SWNTs). UV–visible–near-IR absorption, photoluminescence, Raman spectroscopy, and atomic force microscopy were used to characterize the solubilized aqueous nanotube solutions.
- 著者
- Tomoki Nishi Yasuro NIIDOME
- 出版者
- The Japan Society for Analytical Chemistry
- 雑誌
- Analytical Sciences (ISSN:09106340)
- 巻号頁・発行日
- pp.21N027, (Released:2021-07-30)
- 被引用文献数
- 1
- 著者
- Takuro Niidme Masanori Fujii Naotoshi Nakashima Yoshiki Katayama Yasuro Niidome
- 出版者
- (社)日本化学会
- 雑誌
- Chemistry Letters (ISSN:03667022)
- 巻号頁・発行日
- pp.150258, (Released:2015-04-17)
- 被引用文献数
- 11
Gold nanorods were intravenously injected into tumor-bearing mice. The distribution of gold in tumor tissue sections was mapped by imaging mass spectrometry (IMS) using a MALDI mass spectrometer. IMS images of tumor tissue sections indicated that the gold nanorods were not distributed throughout tumor tissues but were localized in vasculature-rich areas.
- 著者
- Masanori Fujii Naotoshi Nakashima Takuro Niidome Yasuro Niidome
- 出版者
- (社)日本化学会
- 雑誌
- Chemistry Letters (ISSN:03667022)
- 巻号頁・発行日
- vol.43, no.1, pp.131-133, 2014-01-05 (Released:2014-01-05)
- 参考文献数
- 23
- 被引用文献数
- 13
Laser-induced desorption and ionization (LDI) of gold ions (Aun+: n = 1–3) were observed from gold nanorods in a liver tissue section (thickness: 10 µm). Larger amounts of gold nanorods produced stronger mass signals. Organic molecules in the tissue were not detected and did not inhibit the LDI processes of the gold nanorods in the tissue. Because of the selective LDI processes of the gold nanorods, the distribution of gold in the liver was successfully determined by imaging mass spectrometry.
- 著者
- Yuki Hamasaki Naotoshi Nakashima Yasuro Niidome
- 出版者
- (社)日本化学会
- 雑誌
- Chemistry Letters (ISSN:03667022)
- 巻号頁・発行日
- vol.42, no.9, pp.1093-1095, 2013-09-05 (Released:2013-09-05)
- 参考文献数
- 19
- 被引用文献数
- 4
Electrochemical oxidation of silver shells on gold nanorods was examined using in situ spectroscopy and scanning electron microscopy. The oxidation, in a phosphate buffer solution, was suppressed because of the formation of Ag3PO4. In contrast, oxidation in a KCl solution occurred at the corners of the nanorods and proceeded until giving gold nanorods without silver shells. After the 10-s electrolysis, nanoparticles with different shapes were found on the electrode. The inhomogeneous oxidation was due to rapid oxidation of the silver shells and occasional contact of the nanorods with the electrode surfaces.
- 著者
- Kohei Shimoda Tsuyohiko Fujigaya Naotoshi Nakashima Yasuro Niidome
- 出版者
- (社)日本化学会
- 雑誌
- Chemistry Letters (ISSN:03667022)
- 巻号頁・発行日
- pp.130457, (Released:2013-06-21)
- 被引用文献数
- 3
Poly(N-isopropylacrylamide) (PNIPAM) was coated on gold nanorods (NRs) without forming aggregates. The PNIPAM-coated NRs (PNIPAM-NRs) formed aggregates at higher temperature than the lower critical solution temperature (LCST) of the PNIPAM layers. The aggregation showed reversible spectroscopic responses under repeated temperature cycles. When near infrared (near-IR) light irradiated a PNIPAM-NR solution, the temperature raise up, and formed aggregates that showed broad and weak surface plasmon bands. The spectroscopic responses in near-IR region work as a negative feedback for heating a photoirradiated nanorod solution. The feedback offers spontaneous temperature control of the photoirradiated solution at LCST of PNIPAM.