02063nas a2200241   4500008004100000022001400041245013000055210006900185260000900254300001600263490000700279520120900286100002701495700003101522700001801553700002201571700002201593700002401615700001801639700001801657700002001675856012601695       2018                        eng d  a0020-166900aSynthetic control on structure/dimensionality and photophysical properties of low dimensional organic lead bromide perovskite0 aSynthetic control on structuredimensionality and photophysical p  cOCT   a13443-134520 v573 aLow dimensional lead halide perovskites have attracted huge research interest due to their structural diversity and remarkable photophysical properties. The ability to controllably change dimensionality/structure of perovskites remains highly challenging. Here, we report synthetic control on structure/dimensionality of ethylenediammonium (ED) lead bromide perovskite from a two dimensionally networked (2DN) sheet to a one dimensionally networked (1DN) chain structure. Intercalation of solvent molecules into the perovskite plays a crucial role in directing the final dimensionality/structure. This change in dimensionality reflects strongly in the observed differences in photophysical properties. Upon UV excitation, the 1DN structure emits white light due to easily formed “self-trapped” excitons. 2DN perovskites show band edge blue emission (∼410 nm). Interestingly, Mn2+ incorporated 2DN perovskites show a highly red-shifted Mn2+ emission peak at ∼670 nm. Such a long wavelength Mn2+ emission peak is unprecedented in the perovskite family. This report highlights the synthetic ability to control the dimensionality/structure of perovskite and consequently its photophysical properties.1 aHaris, Muhammed, P. U.1 aBakthavatsalam, Rangarajan1 aShaikh, Samir1 aKore, Bhushan, P.1 aMoghe, Dhanashree1 aGonnade, Rajesh, G.1 aSarma, D., D.1 aKabra, Dinesh1 aKundu, Janardan  uhttps://library.ncl.res.in/content/synthetic-control-structuredimensionality-and-photophysical-properties-low-dimensional