A new neutral organic material DMPO with ultra-strong second-order nonlinear response and excellent anti-deliquescence
Nonlinear optical(NLO)organic materials with large optical nonlinearity and high stability are highly at-tractive for wide applications.Herein,a new organic NLO chalcone derivative,1-(4-methoxy phenyl)-3-(4-ethoxy phe-nyl)-2-propenyl-1-ketone(DMPO),with an ultra-strong sec-ond-order nonlinear response was designed and systematically investigated.The as-designed DMPO was synthesized,and DMPO single crystals with a size of 10 × 5 × 4 mm3 were grown rapidly in only 5 days.The as-grown DMPO crystals formed by neutral organic molecules exhibit high transparency over a wide range of 600-1800 nm,a moderate optical band gap of 2.51 eV,and excellent anti-deliquescence.In particular,the second-harmonic generation response of DMPO reaches 1.86 times that of the benchmark material 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylate,revealing the outstanding macroscopic optical nonlinearity of DMPO,as designed.Therefore,DMPO combines several advantages,holding great potential for applications in nonlinear optics.
State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China
Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350102,China
organic nonlinear material DMPO simulations measurements SHG
National Natural Science Foundation of ChinaSichuan Science and Technology Program
NETL
NSTL
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