A thiazolo[5, 4-d]thiazole-bridged porphyrin organic framework as a promising nonlinear optical material. Issue 74 (27th August 2019)

• Record Type: Journal Article
• Authors: Samal, Mahalaxmi; Valligatla, Sreeramulu; Saad, Nabil A.; Rao, M. Veeramohan; Rao, D. Narayana; Sahu, Rojalin; Biswal, Bishnu P.
• Is Part Of: Chemical communications. Volume 55:Issue 74(2019)
• Page Start: 11025
• Page End: 11028
• Publication Date: 2019-08-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc05415d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : We report a porous thiazolo[5, 4- d ]thiazole-bridged porphyrin organic framework, Por-TzTz-POF, with promising nonlinear optical (NLO) activity. Abstract : Porphyrin-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) σ 1 / σ 0 = 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).