Have you tried playing with the ADSR envelopes
Try a very slow attack with little to minimum decay sustain and release and some reverb. Use a gate plugin to cut the sound and make it "whip" at the end of the chord. Also slight reverb.
Alternatively try a hard attack with gentle decay and sustain with a moderate release. Bounce it to an audio file and reverse then add some light reverb.
You could also try the bounced audio in a sampler