A light emitting thin film and a manufacturing method thereof, a light emitting device and a displaying substrate, which relates to the technical field of displaying. The light emitting thin film includes a polymer (1) and a quantum dot (2) bonded to the polymer (1); the quantum dot (2) includes a metal nanoparticle (3) and a core-shell structure connected to the metal nanoparticle (3); and the metal nanoparticle (3) is bonded to the polymer (1) by a sulfide bond.

An object of the present disclosure is to provide a method for producing a fluorine-containing polymer and a composition containing the fluorine-containing polymer. The present disclosure provides a composition comprising (A) a fluorine-containing polymer comprising as a main component a structural unit containing a fluorine-containing aliphatic ring, and (B) an aprotic solvent, wherein the fluorine-containing aliphatic ring of the fluorine-containing polymer (A) contains one, two, or three etheric oxygen atoms as a ring-constituting atom; when the fluorine-containing aliphatic ring contains a plurality of etheric oxygen atoms, the etheric oxygen atoms are not adjacent to each other; and the fluorine-containing polymer (A) is present in an amount of 20 mass % or more based on the mass of the composition.

An object of the present disclosure is to provide a method for producing a fluorine-containing polymer and a composition containing the fluorine-containing polymer. The present disclosure provides a composition comprising (A) a fluorine-containing polymer comprising as a main component a structural unit containing a fluorine-containing aliphatic ring, and (B) an aprotic solvent, wherein the fluorine-containing aliphatic ring of the fluorine-containing polymer (A) contains one, two, or three etheric oxygen atoms as a ring-constituting atom; when the fluorine-containing aliphatic ring contains a plurality of etheric oxygen atoms, the etheric oxygen atoms are not adjacent to each other; and the fluorine-containing polymer (A) is present in an amount of 20 mass % or more based on the mass of the composition.

The self-healing cross-linked polymer comprises units of formula (I), wherein: P is a polymeric chain, R.sub.1 and R.sub.1 are independently selected from the group consisting of: H, (C.sub.1-C.sub.20)alkyl, (C.sub.5-C.sub.14)aryl, OR.sub.4, (CO)R.sub.5, O(CO)R.sub.6, (SO)R.sub.7, NHCOR.sub.8, COOR.sub.9, NR.sub.10R.sup.11, NO.sub.2, and halogen; R.sub.2, R.sub.2, R.sub.3 and R.sub.3 are independently selected from the group consisting of: H, (C.sub.1-C.sub.20)alkyl and (C.sub.5-C.sub.14)aryl; R.sub.4 to R.sub.11 are the same or different, and are selected from the group consisting of: H, (C.sub.1-C.sub.20)alkyl, and (C.sub.5-C.sub.14)aryl; m is from 3 to 4; n is from 1 to 2; provided that n+m is 5; the polymer having H-bonding interactions and being able to undergo catalyst free aromatic disulfide metathesis at room-temperature, and having a tensile strength value from 0.5 to 1.5 MPa and an elongation at break value higher than 200% at room-temperature.

##STR00001##

A polymer including tellurium in the main chain, which is prepared by reacting (A) a compound having a plurality of cyclic (thio) ether groups, and (B) TeX.sub.4, wherein X is a halogen atom.

A polymer including tellurium in the main chain, which is prepared by reacting (A) a compound having a plurality of cyclic (thio) ether groups, and (B) TeX.sub.4, wherein X is a halogen atom.

The present invention provides chalcogenide hybrid organic/inorganic polymers (CHIPs or organic chalcogenide polymers) and methods for producing and using the same. In particular, the chalcogenide hybrid organic/inorganic polymers of the invention comprise a hydrocarbon cyclic ring structure and one or more chalcogenide selected from the group consisting of sulfur, selenium, cyclic selenium sulfide, and a combination thereof.

The present invention provides chalcogenide hybrid organic/inorganic polymers (CHIPs or organic chalcogenide polymers) and methods for producing and using the same. In particular, the chalcogenide hybrid organic/inorganic polymers of the invention comprise a hydrocarbon cyclic ring structure and one or more chalcogenide selected from the group consisting of sulfur, selenium, cyclic selenium sulfide, and a combination thereof.