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Volumn , Issue 36, 2007, Pages 3729-3731

Simple and rapid colorimetric enzyme sensing assays using non-crosslinking gold nanoparticle aggregation

Author keywords

[No Author keywords available]

Indexed keywords

GOLD; NANOPARTICLE;

EID: 34548650433     PISSN: 13597345     EISSN: None     Source Type: Journal    
DOI: 10.1039/b705335e     Document Type: Article
Times cited : (168)

References (32)
  • 22
    • 0004256049 scopus 로고    scopus 로고
    • McGraw-Hill College, Boston, MA
    • R. F. Weaver, Molecular Biology, McGraw-Hill College, Boston, MA, 2002
    • (2002) Molecular Biology
    • Weaver, R.F.1
  • 27
    • 34547280298 scopus 로고    scopus 로고
    • The initial purpose of this dilution is to minimize the effect of local salt concentration increase on the AuNP stability when reaction sample solution is added into AuNP solution. However, our subsequent study showed that the undiluted reaction solution could also be directly added to AuNP solution without causing significant AuNP stability change (see ESI, Fig. S2)
    • W. Zhao F. Gonzaga Y. Li M. A. Brook Adv. Mater. 2007 19 1766
    • (2007) Adv. Mater. , vol.19 , pp. 1766
    • Zhao, W.1    Gonzaga, F.2    Li, Y.3    Brook, M.A.4
  • 28
    • 34548631011 scopus 로고    scopus 로고
    • The lower CIAP concentration (e.g. 0.05 units/20 μL) could also be detectable, but a longer reaction time (e.g. 12 h) was required to ensure enough ATP had been converted into adenosine to get a quick color change (1 min) in the subsequent AuNP test
    • The lower CIAP concentration (e.g. 0.05 units/20 μL) could also be detectable, but a longer reaction time (e.g. 12 h) was required to ensure enough ATP had been converted into adenosine to get a quick color change (1 min) in the subsequent AuNP test
  • 29
    • 34548624764 scopus 로고    scopus 로고
    • Control experiments where the AuNP stability with or without CIAP were accessed by gradually adding NaCl solution (1 M) to AuNP solution showed that CIAP did not stabilize AuNP either under studied conditions
    • Control experiments where the AuNP stability with or without CIAP were accessed by gradually adding NaCl solution (1 M) to AuNP solution showed that CIAP did not stabilize AuNP either under studied conditions
  • 32
    • 0029971656 scopus 로고    scopus 로고
    • Theoretically, there is a possibility that AuNPs are bridged by the RCA product (or H-bonds between DNA molecule-adsorbed AuNPs). However, we think this is a minor contribution to AuNP aggregation in our assay given the fact that this type of inter-particle crosslinking process is known as a relatively slow process (for example, see ref. 1a and 8c). Considering the AuNP aggregation (or color change) in our assay is completed in 1 min, we believe this aggregation is induced by the loss (or screen) of surface charges
    • D. Liu S. L. Daubendiek M. A. Zillman K. Ryan E. T. Kool J. Am. Chem. Soc. 1996 118 1587
    • (1996) J. Am. Chem. Soc. , vol.118 , pp. 1587
    • Liu, D.1    Daubendiek, S.L.2    Zillman, M.A.3    Ryan, K.4    Kool, E.T.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.