An infrared absorber includes a compound represented by Chemical Formula 1. An infrared absorbing/blocking film, a photoelectric device, an organic sensor, and an electronic device may include the infrared absorber.

##STR00001##

In Chemical Formula 1, Ar, X.sup.1, X.sup.2, Y.sup.1, Y.sup.2, R.sup.1, R.sup.2, R.sup.11, R.sup.12, R.sup.13, and R.sup.14 are the same as defined in the detailed description.

An organic compound represented by [1], satisfying (i) and (ii), and represented by [2-1] or [2-2].

A-(B).sub.m  [1] (i) T.sub.1 of the unit A<T.sub.1 of the unit B, and (ii) HOMO-LUMO orbitals responsible for T.sub.1 transition are present in the unit A,

##STR00001## wherein R.sub.1 is selected from alkyl groups and the like, m denotes an integer of 1 or more and 5 or less, and n denotes an integer of 0 or more and 4 or less, the unit B is a fused ring with a partial structure represented by the general formula [3-1] or [3-2] or the like and is bonded to the unit A via a carbon atom, wherein X is selected from an oxygen atom, a sulfur atom, and the like, and the rings C to E independently denote a single ring and may have a deuterium atom or an alkyl group.

An organic compound represented by [1], satisfying (i) and (ii), and represented by [2-1] or [2-2].

A-(B).sub.m  [1] (i) T.sub.1 of the unit A<T.sub.1 of the unit B, and (ii) HOMO-LUMO orbitals responsible for T.sub.1 transition are present in the unit A,

##STR00001## wherein R.sub.1 is selected from alkyl groups and the like, m denotes an integer of 1 or more and 5 or less, and n denotes an integer of 0 or more and 4 or less, the unit B is a fused ring with a partial structure represented by the general formula [3-1] or [3-2] or the like and is bonded to the unit A via a carbon atom, wherein X is selected from an oxygen atom, a sulfur atom, and the like, and the rings C to E independently denote a single ring and may have a deuterium atom or an alkyl group.

In an embodiment is provided a method of making a photo-absorbing composition that includes forming a donor-acceptor small molecule (DASM) by bonding an electron donor portion to an electron acceptor portion; and bonding the DASM to a nanographene structure using a Stille coupling reaction, a Suzuki cross-coupling reaction, or a C—H activation cross-coupling reaction. In another embodiment is provided films that include a photo-absorbing composition.

In an embodiment is provided a method of making a photo-absorbing composition that includes forming a donor-acceptor small molecule (DASM) by bonding an electron donor portion to an electron acceptor portion; and bonding the DASM to a nanographene structure using a Stille coupling reaction, a Suzuki cross-coupling reaction, or a C—H activation cross-coupling reaction. In another embodiment is provided films that include a photo-absorbing composition.

An organic compound is represented by Chemical Formula 1.

##STR00001##

In Chemical Formula 1, X.sup.1, X.sup.2, Ar.sup.1, n, R.sup.1, R.sup.2, A.sup.1, and A.sup.2 are each the same as in the specification.

An organic compound is represented by Chemical Formula 1.

##STR00001##

In Chemical Formula 1, X.sup.1, X.sup.2, Ar.sup.1, n, R.sup.1, R.sup.2, A.sup.1, and A.sup.2 are each the same as in the specification.

Disclosed are a compound represented by Chemical Formula 1A or 1B, an organic thin film including the same, a thin film transistor, and an electronic device.

##STR00001##

In Chemical Formulae 1A and 1B, X.sup.1, X.sup.2, R.sup.1 to R.sup.4, and n1 are the same as described in the detailed description.

Disclosed are a compound represented by Chemical Formula 1A or 1B, an organic thin film including the same, a thin film transistor, and an electronic device.

##STR00001##

In Chemical Formulae 1A and 1B, X.sup.1, X.sup.2, R.sup.1 to R.sup.4, and n1 are the same as described in the detailed description.

A compound of Chemical Formula 1, and an organic photoelectric device, an image sensor, and an electronic device including the same are disclosed: ##STR00001## In Chemical Formula 1, each substituent is the same as defined in the detailed description.