Spectrally Resolved Super-Resolution Microscopy Unveils Multipath Reaction Pathways of Single Spiropyran Molecules
- Authors
- Kim, Doory; Zhang, Zhengyang; Xu, Ke
- Issue Date
- Jul-2017
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.139, no.28, pp.9447 - 9450
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
- Volume
- 139
- Number
- 28
- Start Page
- 9447
- End Page
- 9450
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/151940
- DOI
- 10.1021/jacs.7b04602
- ISSN
- 0002-7863
- 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.
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