Color Change Effect in an Organic–Inorganic Hybrid Material Based on a Porphyrin Diacid

Halogen Contacts‐Induced Unusual Coloring in BiIII Bromide Complex: Anion‐to‐Cation Charge Transfer via Br⋅⋅⋅Br Interactions

“…Moreover, although this class of compounds has been intensively studied for more than 100 years and can be considered as a “classic” of coordination chemistry, it continues to surprise the chemical community with novel unexpected features. Among the most recent examples are photochromism found in viologen‐containing chlorobismuthates and hybrid bromozincates, thermochromism of iodobismuthates, solvent‐induced color changes in porphyrinic halobismuthates, mechanochromic luminescence, photocatalytic activity, etc. Herein, we report a novel unforeseen phenomenon which was observed in the course of our studies of Bi III halide complexes (PHBs).…”

Bromo‐ and Polybromoantimonates(V): Structural and Theoretical Studies of Hybrid Halogen‐Rich Halometalate Frameworks

“…Halide complexeso fp ost-transition (in particular,P b, Sb, and Bi)a nd late transition (Cu, Ag) elements have revealed a number of interesting physicalp roperties relevant for materials science, such as:f erroelectricity and ferroelasticity, [1][2][3] photocatalytic properties, [4][5][6] unusuals olvent-induced color changes, [7] photochromism, [8] thermochromism, [9][10][11] etc. From the point of view of coordination chemistry,a na ttractive feature of these compounds is the great variety of structural types.…”

“…Expansion of the range of cationsi nthese syntheses resulted in ar epresentatives et of novel polybromide complexes of antimony.W hat is more, the diversity of the structuralt ypes appearing in this class is greater than it could be expected. ( 7). Additionally,w eh ave conducted a theoretical analysiso ft he bonding and energies of the Br•••Br interactions within the structures of both new and previously presented complexeso ft he {[SbBr 6 ](Br 3 )} 2nÀ type with 4-MePyH + (8), [38] 2-MePyH + (9), [22] and quinoliniumH + (10) [39] as cations.…”

Graphene quantum dot-porphyrin/phthalocyanine multifunctional hybrid systems: from interfacial dialogue to application

“…32,33,[97][98][99][100] The size of their π-conjugated regions and their surface/edge structures regulate their optical properties, while maintaining their anisotropic nature, i.e., lateral dimensions greater than their height. 26,101 Interestingly, GQDs are superior to get engineered at bio-interfaces. Besides being dimensionally wise compatible with the redox active sites within tunneling distance of cofactors, they considerably decrease the oxygen adsorption and the electron transfer barrier, 23 providing enhanced electron transfer, electronic conduction abilities, and electrocatalytic activity for the redox reaction (ORR) due to the increased contribution of electro-catalytically active edge sites.…”