Cambridge Open Engage home
What is Cambridge Open Engage?
How to Submit
Browse
About
News [opens in a new tab]

Basic-to-acidic reversible pH switching with a merocyanine photoacid

08 February 2022, Version 1
Working Paper
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

The application of merocyanine photoacids has been previously largely limited to neutral and acidic pH values. Here we introduce a new merocyanine photoacid with superior pH switching qualities. By increasing the pKa in the dark (pKadark) and the solubility we increased the reversible visible light induced pH jump to 3.5 units. Moreover, it is the first demonstration of a merocyanine photoacid able to generate a significant pH drop from a basic (pH 8.3) to an acidic (pH 5.2) environment.

Keywords

photoswitch
photochromic
photoacid
merocyanine
spiropyran
pH
pH switch

Supplementary materials

Title
Description
Actions
Title
Supporting Information
Description
All the synthetic, spectroscopic and other supporting data and analysis.
Actions
Title
All NMR, UV-vis absorption, pH data
Description
All the NMR, UV-vis and pH data, and processed data in origin and excel files.
Actions

Comments

Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.

Version History

Feb 08, 2022 Version 1

Metrics

789
497
0
Views
Downloads
Citations

License

CC logo
CC
BY logo
BY
The content is available under CC BY 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv-2022-wnts7
D O I: 10.26434/chemrxiv-2022-wnts7 [opens in a new tab]

Funding

Australian Research Council
FT170100094

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) declare that they have sought and gained approval from the relevant ethics committee/IRB for this research and its publication.

Share