Crosslinkable Nonlinear Optical Dendrimers Synthesized by Diels-Alder Reaction
Crosslinkable NLO dendrimers based on azobenzene-type chromophores were synthesized by a Diels-Alder reaction. Their thermal and optical properties were investigated before and after poling at a high temperature. We found that the dendrimers retained good thermal stability up to 260
°C after curing at 130 °C for 10 min based on thermal analysis. Through in-situ poling and curing processes, the highest NLO activity of the dendrimers was d
33 = 1.7 × 10−6 esu at 1064 nm, which was determined by a Maker fringe experiment.
Keywords: CROSSLINKING; DENDRIMER; DIELS-ALDER REACTION; POLING; SECOND-ORDER NONLINEAR OPTICS
Document Type: Research Article
Publication date: 01 January 2012
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