Auto-controlled fabrication of a metal-porphyrin framework thin film with tunable optical limiting effects

Abstract

A layer by layer autoarm immersion method is developed to prepare metal-porphyrin thin films with third-order NLO properties.

Crystalline Porous Materials for Nonlinear Optics

“…[178,179] Li et al developed an effective layer-by-layer autoarm immersion method to prepare porphyrin-based MOF thin films with tunable optical limiting effects. [180] By tuning the thickness of the porphyrin-based MOF PIZA-1 film on quartz substrate, its NLO absorption can be continuously switched from RSA to SA. The optical limiting effect of PIZA-1 thin film can be significantly improved by loading C 60 into the pores, and its nonlinear absorption coefficients (β) increases from 1.9 × 10 −6 to 2.8 × 10 −6 m W −1 (Figure 5d).…”

Designable Al32‐Oxo Clusters with Hydrotalcite‐like Structures: Snapshots of Boundary Hydrolysis and Optical Limiting

“…[7] Such responses can be repeated and present consistent Tmin values ( Figure S50), showing that the prepared tablets are featured with excellent chemical and physical stability.M oreover,a s shown in Figure 5b,t he output fluence of AlOC-50 and AlOC-52 linearly increased at low-incident fluence.N evertheless,a th igh-incident fluence,t he output fluence deviates from the linearity,indicating the typical OL effect. In order to quantitatively evaluate the NLO responses,t he measure Z-scan curves in Figure 5a were fitted by using Equations [1][2][3] in the Supporting Information. [28] By fitting the curves,t he nonlinear absorption coefficient b can be obtained.…”

“…Third‐order nonlinear optical (NLO) materials are featured with potential utilization in photonic applications such as optical limiting (OL) for eye protection, radiation detectors and sensors [2] . Even though a broad range of materials including inorganic and organic compounds have been studied for their considerable NLO properties, crystalline compounds like molecular clusters are still in their infancy [3] . So far, third‐order NLO studies on molecular clusters are focused on heterometallic sulfur clusters and analogous selenide [4] .…”

“…[2] Even though ab road range of materials including inorganic and organic compounds have been studied for their considerable NLO properties,c rystalline compounds like molecular clusters are still in their infancy. [3] So far, third-order NLO studies on molecular clusters are focused on heterometallic sulfur clusters and analogous selenide. [4] Thec ubane-like cluster [NBu n 4 ][MS 4 M' 3 BrX 3 ] (M = Mo,W ;M ' = Cu, Ag;X= Cl, Br, I) can be considered as anotable example.…”

Butterfly and Nest‐Shaped Tp*‐W‐Cu‐S Cluster Monomers and Dimers with Hexamethylenetetramine as Ligand: Anion‐Dependent Structures and Nonlinear Optical Properties

“…Transition metal clusters of organo‐thiometallates such as [Cp*MS 3 ] − (Cp* = pentamethylcyclopentadienyl; M = Mo, W), [ 1 ] [TpMoS(S 4 )] − , [Tp*MoS(S 4 )] − , [TpWS 3 ] − and [Tp*WS 3 ] − (Tp = hydridotris(pyrazol‐1‐yl)borate; Tp* = hydridotris(3,5‐dimethylpyrazol‐ 1‐yl)borate) [ 2 ] have been extensively investigated in the last two decades because of their diverse structural characteristics, [ 3‐9 ] their revelation to biological systems, [ 10‐13 ] catalysis, [ 14‐15 ] and optoelectronic materials. [ 3,16‐24 ] In this regard, we and others have developed a keen interest in the development of molecular arrays from preformed Mo(W)‐Cu(Ag)‐S clusters. [ 25‐29 ] Some of these molecular entities are capable of gas adsorption, [ 30 ] sensing, [ 31 ] or exhibit nonlinear optical properties.…”