The possibility to synthesize large areas of silver grains organized in nanorings using a simple technique based on nanosphere lithography and electroless plating as a metal deposition method is described for the first time. In addition, we present a systematic SERS study of the obtained long-range ordered silver nanodots and nanorings. The possibility to precisely control the size, the interdistance and the morphology of these nanostructures allows us to systematically investigate the influence of these parameters on SERS. We show that the best possible SERS substrates should not only present optimal sizes, interdistances and shapes, but also a grain-like structure composed of sub-100 nm grains in order to maximize the number of hot-spots. In addition, we show that grains arranged in nanorings present higher enhancement factors (E(F) = 5.5 x 10(5)) as compared to similar arrays made of nanodots. A wide range of applications, including real-time monitoring of catalytic surface reactions, environmental and security monitoring as well as clinical and pharmaceutical screening, can be envisaged for these SERS substrates.
机构:
Fac Ciencias Exactas & Nat Buenos Aires, Electrochem Grp, INQUIMAE, Dept Quim Inorgan Analit & Quim Fis, AR-1428 Buenos Aires, DF, ArgentinaUniv Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
Calvo, Ernesto J.
;
Tognalli, Nicolds G.
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Comis Nacl Energia Atom, Ctr Atom Bariloche, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, ArgentinaUniv Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
Tognalli, Nicolds G.
;
Fainstein, Alejandro
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Comis Nacl Energia Atom, Ctr Atom Bariloche, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, ArgentinaUniv Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
机构:
Kogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, JapanKogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, Japan
Asoh, Hidetaka
;
Sakamoto, Seiji
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Kogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, JapanKogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, Japan
Sakamoto, Seiji
;
Ono, Sachiko
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Kogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, JapanKogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, Japan
机构:
Fac Ciencias Exactas & Nat Buenos Aires, Electrochem Grp, INQUIMAE, Dept Quim Inorgan Analit & Quim Fis, AR-1428 Buenos Aires, DF, ArgentinaUniv Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
Calvo, Ernesto J.
;
Tognalli, Nicolds G.
论文数: 0引用数: 0
h-index: 0
机构:
Comis Nacl Energia Atom, Ctr Atom Bariloche, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, ArgentinaUniv Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
Tognalli, Nicolds G.
;
Fainstein, Alejandro
论文数: 0引用数: 0
h-index: 0
机构:
Comis Nacl Energia Atom, Ctr Atom Bariloche, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, ArgentinaUniv Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
机构:
Kogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, JapanKogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, Japan
Asoh, Hidetaka
;
Sakamoto, Seiji
论文数: 0引用数: 0
h-index: 0
机构:
Kogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, JapanKogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, Japan
Sakamoto, Seiji
;
Ono, Sachiko
论文数: 0引用数: 0
h-index: 0
机构:
Kogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, JapanKogakuin Univ, Fac Engn, Dept Appl Chem, Shinjuku Ku, Tokyo 1638677, Japan