《Impact of photosensitizer orientation on the distance dependent photocatalytic activity in zinc phthalocyanine-nanoporous gold hybrid systems》 was written by Steinebrunner, David; Schnurpfeil, Guenter; Kohroede, Mathis; Epp, Alexander; Klangnog, Khaetthariya; Tapia Burgos, Jorge Adrian; Wichmann, Andre; Woehrle, Dieter; Wittstock, Arne. Formula: C20H14OThis research focused onzinc phthalocyanine gold self assembly diphenylisobenzofuran photocatalytic oxidation. The article conveys some information:
Nanoporous gold powder was functionalized in a two-step approach by an azide terminated alkanethiol self-assembled monolayer (SAM) and a zinc(II) phthalocyanine (ZnPc) derivative by copper catalyzed azide-alkyne cycloaddition (CuAAC). A series of different hybrid systems with systematic variation of the alkyl chain length on both positions, the alkanethiol SAM and the peripheral substituents of the ZnPc derivative, was prepared and studied in the photooxidation of diphenylisobenzofuran (DPBF). An enhancement by nearly one order of magnitude was observed for the photosensitized singlet oxygen (1O2) generation of the hybrid systems compared to the same amount of ZnPc in solution caused by the interaction of the npAu surface plasmon resonance and the excited state of the immobilized sensitizer. This interaction was shown to be distance dependent, with decreasing activity for short SAMs with alkyl chain lengths < 6 methylene groups caused by quenching of the excited state via electron transfer as well as decreasing activity for SAMs with n > 8 methylene groups due to decreasing energy transfer for long distances. An unexpected distance dependent behavior was observed for the variation of the peripheral alkyl chain on the photosensitizer revealing a planar orientation of the immobilized photosensitizer on the nanoporous gold surface by a penta-coordinated central zinc ion through interaction with free azide groups from the self-assembled monolayer. In addition to this study using 1,3-Diphenylisobenzofuran, there are many other studies that have used 1,3-Diphenylisobenzofuran(cas: 5471-63-6Formula: C20H14O) was used in this study.
1,3-Diphenylisobenzofuran(cas: 5471-63-6) is a fluorescent dye. 1,3-Diphenylisobenzofuran is the model compound in studies of singlet fission.Formula: C20H14O
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem