Tunable photochromic properties of hybrid solids controlled by the conjugated length of non-photochromic units

Abstract

The photochromic performance of two hybrid zincophosphite frames could be tuned via enlarging the conjugated length of the non-photochromic bipyridine unit.

Quadruple Photoresponsive Functionality in a Crystalline Hybrid Material: Photochromism, Photomodulated Fluorescence, Magnetism and Nonlinear Optical Properties

“…After irradiation, the energy of phen is given to adjoining BTA 3− , resulting in the ET from O carboxylate to N phen . Thus, the photocoloration of 1 can be interpreted as photoinduced ligand‐to‐ligand ET, which also determines the photochromism of other reported CHPMs [45–53] . To assure the adequate photoactivation for ET for the following characterisations, the irradiation time was enlarged to 120 min for obtaining the colored sample ( 1P ).…”

“…[19][20][21][22][23][24][25][26][27][28][29][30] Besides the CHPMs based on photodeformable or photoresponsive ligands, the conjugated N-heterocycle moieties as potential electron acceptors (EAs) are also desirable units for yielding CHPMs. [41][42][43][44][45][46][47][48][49][50] The assembly of various EAs moieties, electron donors (EDs) species, and metal ions generates assorted CHPMs driven by photoinduced electron-transfer (ET) between EDs and EAs, [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] and the resulting CHPMs feature additional fascinating photoresponsive functionality like photomagnetism, photocurrent, sensor for X-ray, etc. [41][42][43][44][45][46][47][48][49][50]…”

“…[41][42][43][44][45][46][47][48][49][50] The assembly of various EAs moieties, electron donors (EDs) species, and metal ions generates assorted CHPMs driven by photoinduced electron-transfer (ET) between EDs and EAs, [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] and the resulting CHPMs feature additional fascinating photoresponsive functionality like photomagnetism, photocurrent, sensor for X-ray, etc. [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] Reviewing literature implies that the explored photoresponsive functionality in reported CHPMs mainly concentrate on dyad combination. For example, photochromism and photomagnetism was observable in 3d-4f hexacyanoferrate.…”

“…Thus, the photocoloration of 1 can be interpreted as photoinduced ligand-toligand ET, which also determines the photochromism of other reported CHPMs. [45][46][47][48][49][50][51][52][53] To assure the adequate photoactivation for ET for the following characterisations, the irradiation time was enlarged to 120 min for obtaining the colored sample (1P). Notably, time-variable UV-Vis spectra of 1P shows that the photogenerated radicals could be stable for 6 day at ambient conditions (Figure S7).…”

The Tri(imidazole)‐Derivative Moiety: A New Category of Electron Acceptors for the Design of Crystalline Hybrid Photochromic Materials

“…[10] Recently,w ea nd others have reportedt hat the introductiono fp olypyridine-derivative moieties to metal phosphite systemsp rovides possibilities to construct CHPMs. [11] Further structure-propertyr elationship analysis revealed that the LLET between phosphite and polypyridine-derivative is responsible fort he resultant photochromism. In other words, the polypyridine derivative could act as ap otential p-EA to promote the resultant ET in the presence of suitable ED ligand.…”