“…Measuring the proton activity (pH) of environment is one of the basic chemical measurements required in various fields of human interest, like biotechnology [20], medicine [21], environmental science [22], water-support system monitoring [23], food safety [24], and many others. Apart from direct pH measurement, sensors detecting proton activity can be employed as a basis for modification, for example, with enzymes [25], nucleic acids [26], or microorganisms [27], yielding biosensors for even more applications. Given this need for sensing of pH and pH-affecting markers or reactions, improvement and development of appropriate production technologies is a relevant task for research.…”