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. 2023 Jun 15;59(49):7619-7622.
doi: 10.1039/d3cc01673k.

Self-assembly of benzophenone-diphenylalanine conjugate into a nanostructured photocatalyst

Simone Adorinni  1 , Giulio Goti  2 , Lorenzo Rizzo  2 , Federica Grassi  2 , Slavko Kralj  3   4 , Fatima Matroodi  5 , Mirco Natali  6 , Rita De Zorzi  1 , Silvia Marchesan  1 , Luca Dell'Amico  2
Affiliations

Self-assembly of benzophenone-diphenylalanine conjugate into a nanostructured photocatalyst

Simone Adorinni et al. Chem Commun (Camb). .

Abstract

The conjugation of photoactive benzophenone with diphenylalanine yielded a self-assembling photocatalyst that was probed in the E → Z photoisomerisation of stilbene derivatives.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Scheme 1
Scheme 1. Self-assembling photocatalyst with benzophenone (BP) and Phe-Phe.
Fig. 1
Fig. 1. Single-crystal XRD structure of BP-Phe-Phe stacks held together by H-bonds (dashed lines) between amide groups and between C-termini (CCDC 2250023).
Fig. 2
Fig. 2. Fibrillation of BP-Phe-Phe. (A) Critical aggregation concentration (cac) derived from the Thioflavin-T fluorescence assay. (B) TEM micrograph. Scalebar = 500 nm. (C) Fibril diameter distribution form TEM micrographs. (D) FT-IR spectra of the amide region. (E) Fibrillation kinetics monitored by CD evolution of the minimum at 240 nm.
Fig. 3
Fig. 3. (A) Photoisomerisation of E-stilbene (E-2). (B) UV-Vis spectra of BP-Phe-Phe. (C) BP-Phe-Phe emission spectrum (ex. 315 nm). (D) BP-Phe-Phe triplet state lifetime. (E) UV-Vis spectra of stilbene without and with BP-Phe-Phe (1 mM, cac). (F) UVRR spectra of BP-Phe-Phe, stilbene, and their mixtures, all in MeCN.
See this image and copyright information in PMC

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