Naphthopyran molecular switches undergo a ring-opening reaction upon external
stimulation to generate intensely colored merocyanine dyes. Their unique modularity and …

Diarylbenzo-and naphthopyrans are one of the important and well-known classses of
organic photochromic systems. Their photolysis leads to highly colored o-quinonoid …

The second edition of this best-selling handbook is bigger, more comprehensive, and now
completely current. In addition to thorough updates to the discussions featured in the first …

Photolysis of regioisomeric helical chromenes 1 and 2 leads to colored reactive
intermediates. While the latter generally decay quite rapidly, they are found to be longer …

Poly (acene) s are significant compounds for various electronic applications. A clean, one-
step synthesis involves α-diketones (2− 4), which undergo facile Strating− Zwanenburg …

The good understanding of a photochromic reaction mechanism requires the establishment
of the list of all the transient species and the definition of their connecting processes. The …

This paper reviews a series of photochromic systems belonging to the classes of
spirooxazines, chromenes and arylethenes, which have been recently investigated in our …

In this paper, the photodynamics of three chromenes (2, 2-spiro-adamantyl-7, 8-benzo (2 H)
chromene, 2, 2-diphenyl (2 H) chromene and 2, 2-diphenyl-5, 6-benzo (2 H) chromene) has …

Naphthopyran polymer conjugates of various rigidities were synthesized by atom transfer
radical polymerization (ATRP), and their photochromic properties were tested within a rigid …

In this paper we investigate the photochromic ring-opening reaction of 2, 2-diphenyl-5, 6-
benzo (2H) chromene. In particular, we study the uncertainties and contradictions in various …