INSTEAD OF USING IC741 WHAT IC WE USE TO DESIGN THE CURRENT TO VOLTAGE OR VOLTAGE TO CURRENT CONVERTER?

 

You can still use op-amps for both trans-impedance and trans-conductance amplifiers.

This PDF shows simplified examples, and you would have study up on the various practical circuits that could meet your application.

There are specialized devices to do these functions, but you would have to provide specifications and details on what you are doing.