Photo-controlled molecular recognition of α-cyclodextrin with azobenzene containing polydiacetylene vesicles

Abstract

Herein, photo-controlled inclusion and exclusion reaction of azobenzene-containing polydiacetylene vesicles with alpha-cyclodextrin were used to act as driving force to induce chromatic transition of PDA vesicles, which provided a novel model system that combines photochemistry and host-guest chemistry for a photo-stimulus-responsive vesicle.

Light and host–guest inclusion mediated salmon sperm DNA/surfactant interactions

“…b-CD, which has an inner cavity of about 270 Å 3 can accommodate 8-10 CH 2 groups in a bended conformation [68,69]. a-CD, which has a larger cavity, can host trans-azobenzene group through host-guest interaction [70][71][72]. To reveal the trans-AzoC6Mim/a-CD association, UV-vis absorption of AzoC6Mim is measured at the same concentration by varying a-CD concentration.…”

Photon energy storage materials with high energy densities based on diacetylene–azobenzene derivatives

“…Previous efforts on azobenzene-decorated diacetylenes and polydiacetylenes have focused on asymmetric structures where azobenzene groups functionalized on one side and long alkyl chains on the other side are designed to enable the selfassembly of molecules into vesicles and tubes 25 or bilayer lms 26,27 for applications such as photocontrolled molecular recognition and reversible optical switch. 28 Building upon the knowledge gained in these studies regarding the structural change of the azobenzene-functionalized diacetylenes, we are able to design symmetric diacetylenes that enable the high loading and ordered arrangement of azobenzene groups. The compact systems of the azobenzene derivatives without bulky groups are desirable to maximize the gravimetric and volumetric energy densities of photon energy storage materials.…”

Mechanically Drawable Thermochromic and Mechanothermochromic Polydiacetylene Sensors

“…Importantly, blue colored PDAs undergo a color change to red when they are exposed to various chemical (e.g., volatile organic solvents, ions, and specifi c molecular recognition events) and physical (e.g., temperature and mechanical strain) stimuli. Stimulus-responsive colorimetric PDAs have been prepared in a variety of forms including aqueous suspensions, [24][25][26]33,43,44 ] fi lms, [13][14][15][16][17]31 ] nanowires/nanofi bers, [ 19,45,46 ] microarrays, [ 28,29,47 ] and microfl uidic chips. [ 48 ] In the investigation described below, we prepared a new crayon-like PDA-wax composite by using a mixing-molding technique.…”