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High Temperature Seedless Synthesis of Au NRs Using BDAC/CTAB Co-surfactant
Min Li,Lai Wei,Xian Zhang,Xue-feng Yu *
Author NameAffiliationE-mail
Min Li Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China  
Lai Wei Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China  
Xian Zhang Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China  
Xue-feng Yu * Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, China yxf@whu.edu.cn 
Abstract:
Au nanorods have been successfully synthesized at 90°C by using hexadecyltrimethylammonium bromide (CTAB) and benzyldimethylammoniumchloride hydrate (BDAC) co-surfactant. At 90 °C, the reaction time was less than 10 s, and the longitudinal surface plasmon absorption band could vary between 680 and 770 nm by adjusting the molar ratio of BDAC to CTAB from 2 to 0.5. At 90 °C, nanorods with a longitudinal surface plasmon absorption peak of 770 nm can be obtained when the molar ratio of BDAC to CTAB was 3:2.
Key words:  Au nanorod, Hexadecyltrimethylammonium bromide, Benzyldimethylammoniumchloride hydrate, High temperature
FundProject:
High Temperature Seedless Synthesis of Au NRs Using BDAC/CTAB Co-surfactant
李敏,卫来,张娴,喻学锋*
摘要:
采用十六烷基三甲基溴化铵(CTAB)和十八烷基苄基二甲基氯化铵(BDAC)的混合溶液作为表面活性剂,制备金纳米棒.在90°的高温条件下,反应的时间可控制在10s之内. 通过改变表面活性剂中CTAB与BDAC的比例从2到0.5, 所得产物的径向等离子吸收峰可在680 nm到770nm之间调节. 当表面活性剂中CTAB和BDAC的比例为3:2时,制备的金纳米棒的径向等离子吸收峰可达770nm附近.
关键词:  金纳米棒,十六烷基三甲基溴化铵,十八烷基苄基二甲基氯化铵
DOI:10.1088/1674-0068/21/05/476-480
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