The materials' static absorbance and photoluminescence (PL) at room temperature are presented in Figure . For all samples the absorbance (dashed lines), calculated from the reflectivity of powdered single crystals, shows an absorption edge well close to the UV range (between 380 nm and 420 nm) as expected for twodimensional Pb bromides. Furthermore, even at room temperature a relatively narrow absorption peak can be observed on top of the band edge, consistent with stable excitonic population, typical of quantum confinement effect. 25 650 nm and at 565 nm, with FWHMs of hundreds of nm. Such bright and broadband emission is typical of highly distorted 2D materials, where excitonic recombination is mediated by defects or self-trapping resulting in a significant red shift and broadening of the PL peak. To better understand the nature of the photoluminescence we measured temperature dependent PL spectra between 77 and 297 K (Figure ). The two samples with a higher (and similar) degree of distortion, 1,3-PDA and 1,4-PDA, show a similar trend, with a bright and broad feature dominating the emission at all considered temperatures; intriguingly a small narrow feature appears at 420 nm for 1,3-PDA while cooling down. At lower temperatures 1,4-PDA luminescence efficiency is boosted (Figure ). In 1,4-XDA the PL is still dominated by the narrowband emission at 420 nm, with broadband emission centered at around 575 nm arising as the temperature decreases.