Release of molecular cargo from polymer systems by mechanochemistry

R Küng, R Göstl, BM Schmidt - Chemistry–A European Journal, 2022 - Wiley Online Library
The design and manipulation of (multi) functional materials at the nanoscale holds the
promise of fuelling tomorrow's major technological advances. In the realm of …

Large, tunable, and reversible pH changes by merocyanine photoacids

L Wimberger, SKK Prasad, MD Peeks… - Journal of the …, 2021 - ACS Publications
Molecular photoswitches capable of generating precise pH changes will allow pH-
dependent processes to be controlled remotely and noninvasively with light. We introduce a …

[HTML][HTML] Azole-based diarylethenes as the next step towards advanced photochromic materials

AG Lvov, MM Khusniyarov, VZ Shirinian - Journal of Photochemistry and …, 2018 - Elsevier
For a long time, starting from pioneering works of M. Irie in the late 80 s and early 90 s of the
last century, photochromic diarylethenes were primarily associated with dithienylethenes …

Thermodynamics and kinetics of protonated merocyanine photoacids in water

C Berton, DM Busiello, S Zamuner, E Solari… - Chemical …, 2020 - pubs.rsc.org
Metastable-state photoacids (mPAHs) are chemical species whose photo-activated state is
long-lived enough to allow for proton diffusion. Liao's photoacid (1) represents the archetype …

Proton‐gated ring‐closure of a negative photochromic azulene‐based diarylethene

ICY Hou, F Berger, A Narita, K Müllen… - Angewandte Chemie …, 2020 - Wiley Online Library
Proton‐responsive photochromic molecules are attractive for their ability to react on non‐
invasive rapid optical stimuli and the importance of protonation/deprotonation processes in …

Proton-coupled photochromic hemithioindigo: toward photoactivated chemical sensing and imaging

J Li, X Ma, Y Wang, Y Cheng, Y Qin, J Zhai… - Analytical …, 2023 - ACS Publications
We report photoswitchable fluorescent hemithioindigos (HTIs) where the metastable E
isomers were stabilized by the proton-bridged intramolecular hydrogen bond. Titration …

Modulating polymer dispersity with light: cationic polymerization of vinyl ethers using photochromic initiators

D Liu, AD Sponza, D Yang, M Chiu - Angewandte Chemie, 2019 - Wiley Online Library
Deterministic methods for tuning polymer dispersity are rare, especially for nonradical
polymerizations. Reported here is the first example of photomodulating dispersity in …

Proton‐Transfer Dynamics of Photoacidic Merocyanines in Aqueous Solution

C Kaiser, T Halbritter, A Heckel… - Chemistry–A European …, 2021 - Wiley Online Library
Photoacids attract increasing scientific attention, as they are valuable tools to
spatiotemporally control proton‐release reactions and pH values of solutions. We present …

Light‐Controlled Conformational Switch of an Aromatic Oligoamide Foldamer

B Gole, B Kauffmann, V Maurizot, I Huc… - Angewandte Chemie …, 2019 - Wiley Online Library
An aromatic oligoamide sequence composed of a light‐responsive diazaanthracene‐based
aromatic β‐sheet flanked by two variable diameter helical segments was prepared …

Light-controlled p K a value of chiral Brønsted acid catalysts in enantioselective aza-Friedel–Crafts reaction

CG Krishnan, M Kondo, O Yasuda, D Fan… - Chemical …, 2023 - pubs.rsc.org
Bis (dithienylethene)-based BINOL-derived phosphoric acid (DTE-BPA) has been
developed as a light-controlled chiral organocatalyst for the first time. The photoinduced …