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Spectrally Resolved Super-Resolution Microscopy Unveils Multipath Reaction Pathways of Single Spiropyran Molecules

Title
Spectrally Resolved Super-Resolution Microscopy Unveils Multipath Reaction Pathways of Single Spiropyran Molecules
Author
김두리
Keywords
ROOM-TEMPERATURE; PHOTOCHROMIC SPIROPYRAN; SPECTROSCOPY; MEROCYANINE; DYNAMICS; ISOMERIZATION; NANOPARTICLES
Issue Date
2017-07
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v. 139, no. 28, page. 9447-9450
Abstract
By recording both the images and emission spectra of thousands of single fluorescent molecules stochastically generated from the ring-opening reaction of a spiropyran, we provide mechanistic insights into its multipath reaction pathways. Through statistics of the measured single-molecule spectra, we identify two spectrally distinct isomers, presumably TTC and TTT cis-trans isomers, for the open-ring merocyanine product, and discover a strong solvent polarity-dependence for the relative population of the two isomers. From single molecule spectral time traces, we further examine isomerization between the two product merocyanine isomers, as well as their ring-closure reaction back to the spiropyran form.
URI
https://pubs.acs.org/doi/10.1021/jacs.7b04602https://repository.hanyang.ac.kr/handle/20.500.11754/114852
ISSN
0002-7863
DOI
10.1021/jacs.7b04602
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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