Ag K-Edge EXAFS Analysis of DNA-Templated Fluorescent Silver Nanoclusters: Insight into the Structural Origins of Emission Tuning by DNA Sequence Variations
作者： Michael L. Neidig , Jaswinder Sharma , Hsin-Chih Yeh , Jennifer S. Martinez , Steven D. Conradson
DOI: 10.1021/JA202797W
关键词:
摘要: DNA-templated silver nanoclusters are promising biological fluorescence probes due to their useful properties, including tunability of emission wavelength through DNA template sequence variations. Ag K-edge EXAFS analysis has been used obtain insight into nanocluster bonding, size, and structural correlations fluorescence. The results indicate the presence small (<30 atoms) containing Ag–Ag bonds Ag–N/O ligations DNA. leads differences in silver–DNA ligation as well size. support a model which cooperative effects both Ag–DNA variations cluster size lead tuning nanoclusters.
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sci-hub.se 参考文章(15)
D. C. Koningsberger, R. Prins, A. Bianconi, ..., X-ray absorption : principles, applications, techniques of EXAFS, SEXAFS, and XANES Chemia Analityczna. ,vol. 92, ,(1988)
B KIP, Determination of metal particle size of highly dispersed Rh, Ir, and Pt catalysts by hydrogen chemisorption and EXAFS Journal of Catalysis. ,vol. 105, pp. 26- 38 ,(1987) , 10.1016/0021-9517(87)90005-4
Jaswinder Sharma, Hsin-Chih Yeh, Hyojong Yoo, James H. Werner, Jennifer S. Martinez, A complementary palette of fluorescent silver nanoclusters Chemical Communications. ,vol. 46, pp. 3280- 3282 ,(2010) , 10.1039/B927268B
Andreas Jentys, Estimation of mean size and shape of small metal particles by EXAFS Physical Chemistry Chemical Physics. ,vol. 1, pp. 4059- 4063 ,(1999) , 10.1039/A904654B
W. Schulze, G. Ertl, C. Félix, C. Sieber, W. Harbich, J. Buttet, I. Rabin, Fluorescence and excitation spectra of Ag4 in an argon matrix Chemical Physics Letters. ,vol. 313, pp. 105- 109 ,(1999) , 10.1016/S0009-2614(99)01034-9
Jeffrey T. Petty, Jie Zheng, Nicholas V. Hud, Robert M. Dickson, DNA-templated Ag nanocluster formation. Journal of the American Chemical Society. ,vol. 126, pp. 5207- 5212 ,(2004) , 10.1021/JA031931O
E. G. Gwinn, P. O'Neill, A. J. Guerrero, D. Bouwmeester, D. K. Fygenson, Sequence‐Dependent Fluorescence of DNA‐Hosted Silver Nanoclusters Advanced Materials. ,vol. 20, pp. 279- 283 ,(2008) , 10.1002/ADMA.200702380
T. Vosch, Y. Antoku, J.-C. Hsiang, C. I. Richards, J. I. Gonzalez, R. M. Dickson, Strongly emissive individual DNA-encapsulated Ag nanoclusters as single-molecule fluorophores Proceedings of the National Academy of Sciences of the United States of America. ,vol. 104, pp. 12616- 12621 ,(2007) , 10.1073/PNAS.0610677104
Jeffrey T. Petty, Chaoyang Fan, Sandra P. Story, Bidisha Sengupta, Ashlee St. John Iyer, Zachary Prudowsky, Robert M. Dickson, DNA Encapsulation of Ten Silver Atoms Produces a Bright, Modulatable, Near Infrared-Emitting Cluster. Journal of Physical Chemistry Letters. ,vol. 1, pp. 2524- 2529 ,(2010) , 10.1021/JZ100817Z
Chris I. Richards, Sungmoon Choi, Jung-Cheng Hsiang, Yasuko Antoku, Tom Vosch, Angelo Bongiorno, Yih-Ling Tzeng, Robert M. Dickson, Oligonucleotide-stabilized Ag nanocluster fluorophores. Journal of the American Chemical Society. ,vol. 130, pp. 5038- 5039 ,(2008) , 10.1021/JA8005644