Fluorescent nanoparticles
AssigneeBridgestone Corporation
InventorsXiaorong Wang, Christine Rademacher
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Abstract
A fluorescent nanoparticle includes a core comprising an alkenylbenzene; an intermediate layer, an outer shell layer, and a fluorescent portion. The fluorescent portion includes a structure represented by the following formula: wherein L is a direct bond or a linker group, and F is any fluorescent moiety. The fluorescent portion is located in at least one of the following locations: the core, the intermediate layer, or the shell layer of the nanoparticle. Methods for making the fluorescent nanoparticle are also described.
Claims19
A method for preparing a fluorescent nanoparticle, the method comprising:
- (i) preparing a living polymer with a fluorescent portion by a step selected from the group consisting of:
- (a) copolymerizing a fluorescent monomer with a non-fluorescent monomer;
- and
- (b) polymerizing a non-fluorescent monomer to produce a living polymer, and subsequently adding a fluorescent monomer to the living polymer;
- (ii) adding a crosslinking agent;
- (iii) quenching the living polymer chain ends with a proton source:
- wherein the living polymer with the fluorescent portion is prepared by polymerizing an alkenylbenzene to produce a polyalkenylbenzene, and subsequently adding a fluorescent monomer to the polyalkenylbenzene after or at the same time that the crosslinking agent is added.
A method for preparing a fluorescent nanoparticle, the method comprising:
- (i) preparing a living polymer with a fluorescent portion by a step selected from the group consisting of:
- (a) copolymerizing a fluorescent monomer with a non-fluorescent monomer;
- (b) polymerizing a monomer with a fluorescent initiator;
- and
- (c) polymerizing a monomer to produce a living polymer, and subsequently adding a fluorescent monomer to the living polymer;
- (ii) adding a crosslinking agent;
- (iii) quenching the living polymer chain ends with a proton source:
- wherein the fluorescent portion arises from the addition of a corresponding unit with a structure represented by the following formula:
- wherein L is a direct bond or a linker group, and F is any fluorescent moiety.
Dependencies are inferred from the claim text.