In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 11, No. 14 ( 2023), p. 4808-4819
Abstract:
A water-soluble polymer–peptide conjugate, composed of poly(thiophene methacrylate) (PTMA) and cationic peptide appended perylene diimide (PBI-NH 3 + ), was fabricated. The dipolar interaction between PTMA and PBI-NH 3 + helped to uncoil the polythiophene backbone, resulting in an increase of the conjugation length, which was thoroughly studied by UV-Vis, Fourier transform infrared (FTIR), and X-ray diffraction (XRD) spectra. The morphology of PTMA changes from vesicular to a highly entangled fibrillar network in the hybrid as evident from the HR-TEM study. Fluorescence spectroscopic study and time-correlated single-photon counting (TCSPC) studies were made to understand the effect of interaction on the photoluminescence (PL) properties of the hybrid. The current–voltage ( I – V ) plots of hybrid materials showed synergistic enhancement of current with voltage, showing an interesting organic mixed ionic and electronic conductivity (OMIEC) property, which was further supported through current–time ( I – t ) and Nyquist plot results. This conjugate material shows an enhancement of photo-switching behaviour with the highest photocurrent gain of 9. 8 ( I on / I off ) for the composite with 27 wt% PBI-NH 3 + . The increase in photoswitching property is attributed to efficient charge (electron–hole) separation and holds a future promise for fabricating new types of macromolecular OMIEC systems along with excellent photocurrent switching efficiency.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702245-6
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