One‐step Preparation of Macroporous Polymer Particles with Multiple Interconnected Chambers: A Candidate for Trapping Biomacromolecules

Abstract

Taking advantage of photothermal conversion, the surface pores of water-dispersible single-walled carbon nanotubes assembled on polymer particles were rapidly closed by NIR irradiation to produce macroporous polymeric microspheres with multiple interconnected chambers. These particles can act as smart containers to encapsulate and hold DNA molecules.

A Reversed Photosynthesis‐like Process for Light‐Triggered CO2 Capture, Release, and Conversion

“…This one‐step emulsion seems abnormal as double emulsions are generally stabilized by at least two surfactants. Our previous studies proposed that PLA possesses different interfacial activities upon changing the pH condition . As shown in Figure S2, the interfacial energy between water and dichloromethane drops to 15.0 m n m −1 in the presence of PLA at pH 13, far below the value without addition of PLA (28.0 m n m −1 ).…”

A Light‐Activated Microheater for the Remote Control of Enzymatic Catalysis

“…We have previously explained that PLA is terminated with carboxyl acid groups that are deprotonateda nd become amphiphilic at high pH values. [12,14] Consequently,t he polymer acts as an oil-soluble stabilizer and causes the phase conversion that leads to the formationo ft he W/O/W emulsion. The porous structure is ar esult of removing the inner water phase from the polymer matrix.…”

Enhanced Light Absorption in Porous Particles for Ultra-NIR-Sensitive Biomaterials

“…We attribute the decrease of conductivity change to the phase transition of porous PLA particles that is caused by photoannealing. As we reported previously, 13 excess heat as a result of photothermal conversion may close the surface pores if the local temperature is above the melting temperature (T m ) of PLA. To provide insight into this abnormal conductivity change, a thorough assessment is paid to the morphology of porous PPy@PLA under NIR illumination.…”