"...Wiktor's a Jekyll-Hyde personality..." - Lycos Music
No, you can write 1/8 1/4 1/8, then the half.
The important beat division is not between the 1st and second beats. it is between the 2nd and third beats.
I've been trying to attach an image, but somehow, it never shows up.
Agree with Michel. Additionally (redundantly perhaps) if the 1/8 1/4 1/8 is a recurring pattern throughout the phrase or melody, or in accompanying parts, then that is the notation to go with. Lots of jazz charts use that exact notation.
just don't let the 1/8 - 1/4 - 1/8 motif cross the middle of your 4/4 measure.
if you find that the rhythmic motif MUST absolutely cross the barrier between 2nd and 3rd beats, then use 1/8 - 1/8_tied_to_1/8 - 1/8 instead of the quarter note.