CC BY 3.0 UnportedSamal, MahalaxmiValligatla, SreeramuluSaad, Nabil A.Rao, M. VeeramohanRao, D. NarayanaSahu, RojalinBiswal, Bishnu P.2021-08-202021-08-202019https://oa.tib.eu/renate/handle/123456789/6555https://doi.org/10.34657/5602Porphyrin-based porous organic frameworks are an important group of materials gaining interest due to their structural diversity and distinct opto-electronic properties. However, these materials are seldom explored for nonlinear optical (NLO) applications. In this work, we investigate a thiazolo[5,4-d]thiazole-bridged porous, porphyrin framework (Por-TzTz-POF) with promising NLO properties. The planar TzTz moiety coupled with integrated porphyrin units enables efficient π-conjugation and charge distribution in the Por-TzTz-POF resulting in a high nonlinear absorption coefficient (β = 1100 cm GW-1) with figure of merit (FoM) σ1/σ0 = 5571, in contrast to analogous molecules and material counterparts e.g. metal-organic frameworks (MOFs; β = ∼0.3-0.5 cm GW-1), molecular porphyrins (β = ∼100-400 cm GW-1), graphene (β = 900 cm GW-1), and covalent organic frameworks (Por-COF-HH; β = 1040 cm GW-1 and FoM = 3534). This journal is © The Royal Society of Chemistry.enghttps://creativecommons.org/licenses/by/3.0/540graphenemetal organic frameworkporphyrin derivativethiazole derivativeabsorptionchemical analysischemical bondchemical interactionchemical structuredecompositiondensity functional theoryelectron transportfluorescencenuclear magnetic resonance spectroscopyporosityscanning electron microscopystructure activity relationthermogravimetrythermostabilitytransmission electron microscopyX ray diffractionArticle