Dynamic and static quenching of fluorescence by 1-4 nm diameter gold monolayer-protected clusters

The Journal of Physical Chemistry. B
Pearl Pui Hang ChengRoyce W Murray

Abstract

How the efficiency of molecular quenching by Au nanoparticles depends on nanoparticle size is reported for (a) dynamic (collisional) quenching of four different fluorophores by three Au nanoparticles having similar protective layers but differing core diameters (1.1, 1.6, and 2.0 nm) and (b) static quenching in the electrostatic association between [Ru(bpy)3]2+ and five tiopronin-protected Au nanoparticles having core diameters from 1.3 to 3.9 nm. The quenching constants systematically increase with core size. In (a), the dynamic constants scale with the molar absorbance coefficients of the nanoparticles, showing the essentially of the absorbance/emission spectral overlap, and the associated nanoparticle core density of electronic states, in energy-transfer quenching. In (b), the fluorescence of the Au nanoparticle itself was enhanced by energy transfer from the [Ru(bpy)3]2+ fluorophore.

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Citations

Sep 13, 2007·Journal of Fluorescence·Yongxia ZhangChris D Geddes
Feb 12, 2009·ACS Nano·Gionata BattistiniFrancesco Zerbetto
Oct 13, 2006·Chemical Communications : Chem Comm·Cédric R MayerFrancis Sécheresse
Mar 27, 2015·Applied Biochemistry and Biotechnology·Upendra Kumar ParasharAnchal Srivastava
May 7, 2016·Analytical and Bioanalytical Chemistry·Yiliyasi WusimanjiangWujian Miao
Aug 19, 2014·Biosensors & Bioelectronics·Muhammad AteeqSyeda Sohaila Naz
Feb 16, 2012·Physical Chemistry Chemical Physics : PCCP·Emilie B Guidez, Christine M Aikens
Mar 22, 2020·Nanomaterials·Frédéric DumurCédric R Mayer
Oct 21, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Sebastián A DíazEunkeu Oh
Nov 15, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Aniruddha DasShyam Biswas
Feb 18, 2010·Journal of the American Chemical Society·Zhenghua TangGangli Wang
Nov 26, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Anitha DevadossRobert J Forster
May 11, 2021·Chemical Communications : Chem Comm·Shuyang ZhaiZhihong Liu
May 22, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Yongxia ZhangChris D Geddes
May 1, 2010·The Journal of Physical Chemistry. B·G SantoshBoris Rybtchinski
Sep 3, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Jonathan C DumkeIsiah M Warner
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Jan 23, 2015·ACS Applied Materials & Interfaces·Hanqing PanYoung-Seok Shon
Jun 6, 2007·Journal of the American Chemical Society·Junhyung Kim, Dongil Lee

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