CPC C01B 32/194 (2017.08) [C07D 257/08 (2013.01); C07D 409/14 (2013.01); C07D 513/04 (2013.01); C07D 517/04 (2013.01); C07D 519/00 (2013.01); H01L 31/02167 (2013.01); H01L 31/0445 (2014.12); H01L 51/0067 (2013.01); H01L 51/0068 (2013.01); H01L 51/0072 (2013.01); C01B 2204/32 (2013.01); H01G 9/2059 (2013.01); H01L 51/0071 (2013.01); H01L 51/0094 (2013.01); H01L 51/447 (2013.01)] | 16 Claims |
1. A method of making a photo-absorbing composition, comprising:
forming a donor-acceptor small molecule (DASM) by bonding an electron donor portion selected from the group consisting of
to an electron acceptor portion selected from the group consisting of
wherein:
the starred bonds are sites for bonding to other chemical structures;
R is, independently in each instance, an alkyl, alkoxy, vinyl, aryl group, or fluorinated hydrocarbon group;
Q is, independently in each instance, O, S, or Se;
E is, independently in each instance, Si or Ge;
Z is, independently in each instance, a proton or a fluorine atom;
X is, independently in each instance, C or N; and
n of the electron donor portion is an integer greater than or equal to 1; 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, the nanographene structure (NG) selected from the group consisting of
the photo-absorbing composition having a general structure selected from the group consisting of
wherein, n of the photo-absorbing composition is an integer greater than or equal to 1.
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