Noncovalent Functionalization of Few‐Layered Antimonene with Fullerene Clusters and Photoinduced Charge Separation in the Composite. Issue 29 (30th April 2020)

• Record Type: Journal Article
• Authors: Umeyama, Tomokazu; Ohara, Tomoya; Tsutsui, Yusuke; Nakano, Shota; Seki, Shu; Imahori, Hiroshi
• Is Part Of: Chemistry. Volume 26:Issue 29(2020)
• Page Start: 6726
• Page End: 6735
• Publication Date: 2020-04-30
• Subjects: antimonene -- electron transfer -- fullerenes -- organic–inorganic hybrid -- time-resolved microwave conductivity; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202001740
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Few‐layered antimonene (FLSb) nanosheets were noncovalently functionalized with fullerene C60 clusters by quick addition of a poor solvent (i.e., acetonitrile) into a mixed dispersion of FLSb and C60 in a good solvent (i.e., toluene). In a flash‐photolysis time‐resolved microwave conductivity (FP‐TRMC) measurement, the FLSb‐C60 composite, (FLSb+C60 ) m, showed a rapid rise in transient conductivity, whereas no conductivity signal was observed in the single components, FLSb and C60 . This demonstrated the occurrence of photoinduced charge separation between FLSb and C60 in (FLSb+C60 ) m . Furthermore, a photoelectrochemical device with an electrophoretically deposited (FLSb+C60 ) m film exhibited an enhanced efficiency of photocurrent generation, compared to those of the single‐components, FLSb and C60, due to the photoinduced charge separation between FLSb and C60 . This work provides a promising approach for fabrication of antimonene–organic molecule composites and paves the way for their application in optoelectronics. Abstract : Few‐layered antimonene (FLSb) nanosheets were noncovalently functionalized with C60 clusters by quick addition of a poor solvent into a mixed dispersion of FLSb and C60 in a good solvent. Flash‐photolysis time‐resolved microwave conductivity (FP‐TRMC) measurements revealed the occurrence of photoinduced charge separation in the nanocomposite.