A thiazolo[5,4-d]thiazole-bridged porphyrin organic framework as a promising nonlinear optical material

Mahalaxmi Samal; Sreeramulu Valligatla; Nabil A Saad; M Veeramohan Rao; D Narayana Rao; Rojalin Sahu; Bishnu P Biswal

doi:10.1039/c9cc05415d

A thiazolo[5,4-d]thiazole-bridged porphyrin organic framework as a promising nonlinear optical material

Chem Commun (Camb). 2019 Sep 21;55(74):11025-11028. doi: 10.1039/c9cc05415d. Epub 2019 Aug 27.

Authors

Mahalaxmi Samal¹, Sreeramulu Valligatla², Nabil A Saad³, M Veeramohan Rao⁴, D Narayana Rao³, Rojalin Sahu¹, Bishnu P Biswal⁵

Affiliations

¹ Department of Chemistry, School of Applied Sciences, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar-24, Odisha, India. rsahufch@kiit.ac.in.
² Institute for Integrative Nanosciences, IFW-Dresden, 01069, Dresden, Germany.
³ School of Physics, University of Hyderabad, Hyderabad-500046, India.
⁴ Department of Physics, Pondicherry University, Pondicherry-606015, India.
⁵ Faculty of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062, Dresden, Germany and Max-Planck-Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany. b.biswal@fkf.mpg.de.

PMID: 31453586
DOI: 10.1039/c9cc05415d

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) 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).