ATleast wait for 1-2 days and then you can contact them
ATleast wait for few days and them contact for interview
i guess this will give you one more opportunity to highlight your skills and you already know your strong points after interview
Try something like this:
Thank you very much for your time today [or yesterday or the date] to discuss the position of [job title].
I was especially grateful for your explanation of the work that XXXX is going through now.
I an very excited to learn more.
Thanks again for your time
You can send thank you and follow up email