F-RGO Kaplı Kumaş Yüzeylerinin IR-haritalaması

The objective of this proposal is to investigate the functionalised reduced graphene oxide (F-RGO) coatings applied to cotton textile fibres. We will establish a BM02 synchrotron-IR microspectroscopy workflow that delivers the diffraction-limited ≈ 4 µm lateral resolution attainable with the Bruker Hyperion 3000 in the 4000–600 cm⁻¹ range. At this resolution we can visualise micron-scale chemical heterogeneities and detect any uncoated “dead zones” across the fabric surface. For each sample a 200 µm × 200 µm area will be raster-scanned with 4 µm steps, yielding roughly 2 500 spectra that can be acquired within a single beamline shift using single-element scanning, or in only a few minutes when focal-plane-array (FPA) imaging is enabled. Every spectrum will be ratioed to a gold reference and internally normalised to the textile’s C = O (~1720 cm⁻¹) and CHₓ (~2920 cm⁻¹) bands, ensuring reliable comparison of the heteroatom-specific absorptions.<br style="caret-color: rgb(0, 0, 0); font-family: Verdana, Helvetica, Arial, sans-serif; font-size: 12px;"><br style="caret-color: rgb(0, 0, 0); font-family: Verdana, Helvetica, Arial, sans-serif; font-size: 12px;">We will map three functionalised textiles—DCDPS-treated (Si–O–C), 4-ABA-treated (C–N–C) and 4-MBA-treated (C–S–C)—together with their respective controls (RSi, RA, RM). From the hyperspectral cubes we will integrate the Si–O–C (1000–1100 cm⁻¹), C–N–C (1230–1300 cm⁻¹) and C–S–C (720–780 cm⁻¹) regions, extract intensity histograms, calculate standard deviations and Gini coefficients, and evaluate spatial autocorrelations to quantify chemical uniformity. These metrics will be correlated with off-line electrochemical performance data, establishing clear links between coating homogeneity and device behaviour.<br style="caret-color: rgb(0, 0, 0); font-family: Verdana, Helvetica, Arial, sans-serif; font-size: 12px;"><br style="caret-color: rgb(0, 0, 0); font-family: Verdana, Helvetica, Arial, sans-serif; font-size: 12px;">By documenting each experimental and analytical step—including sample mounting, reference collection, spectral normalisation and statistical processing—we will deliver a reproducible, non-destructive IR-mapping protocol that serves as a quality-assurance tool for future graphene-based wearable electronics. The ≥ 10³-fold brilliance of the SESAME synchrotron relative to a conventional Globar source is indispensable for achieving the required signal-to-noise ratio and mapping speed, making BM02 the only viable platform for this study.