“…The repertoire of approaches and technologies for fluorescent thin films and coatings is still expanding, and is comprised of aggregation-induced emission materials [4,5,6,7], derivatization of photochemically stable fluorophores into low-molecular mass gelators [8,9], and high quantum yield carbon dots [10,11,12]. In representative examples from the past few years, fluorescence is carried by a stable fluorophore, such as modified naphthalene diimide [9]; perylene bisimide (PBI) [13]; a Schiff base derivative [14]; rhodamine derivatives grafted onto polymers [15]; chlorophyll [16]; and quantum dots or by organic–inorganic complexes based, e.g., on Eu 3+ /polyhydroxybutyrate [17]. Relatively few cases deal with all-organic films [16], and little precedent is available, to the best of our knowledge, about the in situ deposition of all-organic, reaction-based fluorescent films and coatings by wet dipping technologies.…”