2d Rotation Animation C# help

I am new to Unity and I want to rotate a 2d sprite. I have gotten the object to rotate however, it is a snap rotation as opposed to going through a rotation animation to its specific angle. How do I fix this?

 using UnityEngine;
 using System.Collections;
 
 public class BottomRightRotation : MonoBehaviour {
     
     public GameObject wheel;
     
     public void OnMouseDown () {
         
         wheel.transform.Rotate (0, 0, 144);
         
     }
     void Update() {
         
         OnMouseDown ();
     }
 }