Jump to main content
Jump to site search

Issue 43, 2019
Previous Article Next Article

MoS2 quantum dots chemically modified with porphyrin for solid-state broadband optical limiters

Author affiliations

Abstract

MoS2 quantum dots (MQDs) with unique electronic and optical properties are promising broadband nonlinear optical (NLO) materials for ultrafast optical applications. It would be very interesting and challenging to functionalize MQDs with another hotspot optoelectronically active molecule “porphyrin”. Herein, by treating MQDs with tetraphenylporphyrin (TPP) diazonium salts, we synthesized a novel nanohybrid material, MQD-TPP, in which TPP was covalently functionalized to the surface of MQDs via a C–S linkage. To explore its solid-state broadband NLO application, the MQD-TPP nanohybrid was encapsulated into a poly(methyl methacrylate) (PMMA) matrix for the open-aperture Z-scan measurements at 532 and 1064 nm. In contrast to MQDs/PMMA and TPP/PMMA, the MQD-TPP/PMMA film exhibited superior nonlinear optical and optical limiting responses with the largest nonlinear coefficients (βeff) and the lowest optical limiting (OL) thresholds of about 1059.17 cm GW−1 and 1.62 J cm−2 at 532 nm and 831.13 cm GW−1 and 1.97 J cm−2 at 1064 nm, respectively.

Graphical abstract: MoS2 quantum dots chemically modified with porphyrin for solid-state broadband optical limiters

Back to tab navigation

Supplementary files

Article information


Submitted
02 Aug 2019
Accepted
07 Oct 2019
First published
07 Oct 2019

Nanoscale, 2019,11, 20449-20455
Article type
Communication

MoS2 quantum dots chemically modified with porphyrin for solid-state broadband optical limiters

P. Jiang, B. Zhang, Z. Liu and Y. Chen, Nanoscale, 2019, 11, 20449
DOI: 10.1039/C9NR06604G

Social activity

Search articles by author

Spotlight

Advertisements