Photolysis of an Amphiphilic Assembly by Calixarene-Induced Aggregation

Abstract

Photosensitizers generally show great tendency for self-aggregation in aqueous media, leading to quenched fluorescence and lower photosensitizing ability. Herein, we report that amphiphilic anthracene is highly photoreactive after aggregation induced by p-sulfonatocalix[4]arene in water. The formation of a host-guest supramolecular assembly and the photolysis of the anthryl core are identified by UV-vis and NMR spectroscopy, dynamic light scattering, and transmission electron microscopy. Additionally, the assembly exhibited efficient photolysis with visible light in the presence of exogenous photosensitizers. This approach could be extended to various photoresponsive self-assemblies and applications in phototherapy and the design of photodegradable materials.

Synthesis and evaluation of 9-substituted anthracenes with potential in reversible polymer systems

“…Alternatively, 9-alkoxyanthracenes such as 17 can be synthesized via base mediated proton abstraction at the methylene bridge, followed by alkylation of the formed anion with alkyl halides. 20 By adding undecenoyl chloride instead of alkyl halides to anthrone 16, after addition of a (strong) base and allowing enol rearrangement, ester 19 was synthesized in good yield (84%).…”

Size Switchable Supramolecular Nanoparticle Based on Azobenzene Derivative within Anionic Pillar[5]arene

“…Recently, we have developed a novel strategy for the construction of supramolecular assemblies by means of host induced aggregating ( HIA : a small amount of macrocyclic host could promote the aggregation of guest molecules by lowering the critical aggregating concentration ( CAC ) and even regulating the morphology of the aggregates)5051525354555657. So after successful establishing the recognition motif between 2C-WP5A and G in aqueous solution, we were trying to explore the constructing supramolecular aggregates based on 2C-WP5A and trans- G .…”

Photolysis Behaviors of Anthryl Derivative Aggregation Mediated by Sulfato‐β‐Cyclodextrin

“…Recently, we constructed a photodegradable supramolecular assembly utilizing p‐sulfonatocalix[4]arenes (SC4 A) and amphiphilic 9‐alkoxy‐substituted anthracene, and the results showed that the amphiphilic anthracene was highly photoreactive after aggregation induced by SC4 A in water . Herein, a photodegradable supramolecular assembly was designed with sulfato‐β‐cyclodextrin (SCD) as the host and 2‐pyridinium alkoxy‐substituted anthracene (Anpy) as the guest by molecular induced aggregation (Scheme ).…”