An electrochemical catch-release system (1) for repeated use comprising pH-responsive polymers (2) covalently linked to a structure (3) via a monolayer (4) of eletrochemically insensitive aryl bonds, forming a polyelectrolyte arrangement (5), the polyelectrolyte arrangement (5) being arranged to, when the covalently bounded polymers (2) are in a neutral state, catch an entity (6) being a protein, a vesicle, or a compound modified with poly(ethylene glycol) by non-electrostatic interactions e.g. hydrogen bonds, and when the polymers (2) are in a charged state, release by electrostatic repulsion an entity (6) captured by the polyelectrolyte arrangement (5). The system also comprising a device (7) for applying an electrochemical potential to the polyelectrolyte arrangement (5) to induce a switch of the polyelectrolyte arrangement (5) from the neutral state to the charged state or the reverse in the presence of redox active species.

An electrochemical catch-release system (1) for repeated use comprising pH-responsive polymers (2) covalently linked to a structure (3) via a monolayer (4) of eletrochemically insensitive aryl bonds, forming a polyelectrolyte arrangement (5), the polyelectrolyte arrangement (5) being arranged to, when the covalently bounded polymers (2) are in a neutral state, catch an entity (6) being a protein, a vesicle, or a compound modified with poly(ethylene glycol) by non-electrostatic interactions e.g. hydrogen bonds, and when the polymers (2) are in a charged state, release by electrostatic repulsion an entity (6) captured by the polyelectrolyte arrangement (5). The system also comprising a device (7) for applying an electrochemical potential to the polyelectrolyte arrangement (5) to induce a switch of the polyelectrolyte arrangement (5) from the neutral state to the charged state or the reverse in the presence of redox active species.

An electrochemical catch-release system (1) for repeated use comprising pH-responsive polymers (2) covalently linked to a structure (3) via a monolayer (4) of eletrochemically insensitive aryl bonds, forming a polyelectrolyte arrangement (5), the polyelectrolyte arrangement (5) being arranged to, when the covalently bounded polymers (2) are in a neutral state, catch an entity (6) being a protein, a vesicle, or a compound modified with poly(ethylene glycol) by non-electrostatic interactions e.g. hydrogen bonds, and when the polymers (2) are in a charged state, release by electrostatic repulsion an entity (6) captured by the polyelectrolyte arrangement (5). The system also comprising a device (7) for applying an electrochemical potential to the polyelectrolyte arrangement (5) to induce a switch of the polyelectrolyte arrangement (5) from the neutral state to the charged state or the reverse in the presence of redox active species.

A curable resin composition contains quantum dots (A), a resin (B), a photopolymerizable compound (C), a photopolymerization initiator (D), an antioxidant (E), a leveling agent (F), and a solvent (G), wherein the resin (B) has a weight-average molecular weight in terms of polystyrene of less than 10000 and an acid value of 90 mg KOH/g or more and 150 mg KOH/g or less.

A curable resin composition contains quantum dots (A), a resin (B), a photopolymerizable compound (C), a photopolymerization initiator (D), an antioxidant (E), a leveling agent (F), and a solvent (G), wherein the resin (B) has a weight-average molecular weight in terms of polystyrene of less than 10000 and an acid value of 90 mg KOH/g or more and 150 mg KOH/g or less.

Provided is a semiconductor nanoparticle-containing composition capable of forming a wavelength conversion layer that efficiently converts the wavelength of excitation light and exhibits sufficient luminescence intensity. An aspect of the semiconductor nanoparticle-containing composition of the present invention contains semiconductor nanoparticles (A) and a coloring matter (B) and further contains a polymerizable compound (C), in which the semiconductor nanoparticles (A) have a maximum emission wavelength in the range of 500 to 670 nm over a wavelength range of 300 to 780 nm, and the coloring matter (B) contains at least one selected from coloring matters (B1) to (B5) having specific structures.

Fluorescent material composite particles include translucent inorganic particles having a volume average particle diameter in a range of 30 nm or more and 500 nm or less, fluorescent nanoparticles having an average particle diameter in a range of 5 nm or more and 25 nm or less, and a first resin. At least a part of each of the translucent inorganic particles are embedded in the first resin. The translucent inorganic particles are unevenly distributed to a surface of the fluorescent material composite particles. The fluorescent material composite particles have a volume average particle diameter in a range of 0.5 μm or more and 50 μm or less.

Fluorescent material composite particles include translucent inorganic particles having a volume average particle diameter in a range of 30 nm or more and 500 nm or less, fluorescent nanoparticles having an average particle diameter in a range of 5 nm or more and 25 nm or less, and a first resin. At least a part of each of the translucent inorganic particles are embedded in the first resin. The translucent inorganic particles are unevenly distributed to a surface of the fluorescent material composite particles. The fluorescent material composite particles have a volume average particle diameter in a range of 0.5 μm or more and 50 μm or less.

Highly spherical particles may comprise a thermoplastic polymer grafted to a carbon nanomaterial (CNM-g-polymer), wherein the particles have an aerated density of about 0.5 g/cm.sup.3 (preferably about 0.55 g/cm.sup.3) to about 0.8 g/cm.sup.3. Said CNM-g-polymer particles may be useful in a variety of applications including selective laser sintering additive manufacturing methods.

Highly spherical particles may comprise a thermoplastic polymer grafted to a carbon nanomaterial (CNM-g-polymer), wherein the particles have an aerated density of about 0.5 g/cm.sup.3 (preferably about 0.55 g/cm.sup.3) to about 0.8 g/cm.sup.3. Said CNM-g-polymer particles may be useful in a variety of applications including selective laser sintering additive manufacturing methods.