Solvent-induced reversible high-temperature phase transition in crown ether clathrates

Abstract

Crown-ether coordination compounds and derivatives have been extensively studied in dynamic responsive material due to their rich structures and properties. However, it is still challenging to design crown ether clathrates...

Dual dielectric-responsive hybrid materials with fluorescent properties

“…[20][21][22][23] Organic-inorganic hybrid compounds are considered to be one of the important branches for building multi-functional switching materials because of the great tunability and controllability in their structural compositions. [24][25][26][27][28][29][30][31] By selecting appropriate organic cations and inorganic anions that can realize dynamic motions under external temperature, light, mechanical force, and other stimuli, multi-functional OHIPs may be successfully constructed. [32][33][34][35] Compared with other multi-functional materials, an obvious advantage of multi-functional hybrids is that different physical and chemical properties can be obtained by modifying organic aminum cations or selecting unique inorganic frameworks as required.…”

“…20–23 Organic–inorganic hybrid compounds are considered to be one of the important branches for building multi-functional switching materials because of the great tunability and controllability in their structural compositions. 24–31 By selecting appropriate organic cations and inorganic anions that can realize dynamic motions under external temperature, light, mechanical force, and other stimuli, multi-functional OHIPs may be successfully constructed. 32–35…”

Role of Momentum Matching in Increasing the Curie Temperature for Ferroelectricity in Host–Guest Complexes

“…A variety of guests like 4-methoxyanilinium (4-MOA) [T c = 153 K], 14 + . 21 Subtle modifications by H/F substitution and symmetry lowering of spherical molecules guided by the quasi-spherical theory have been investigated. 6 Interestingly, even for a fixed host (cation) variation in the anion leads to significant variations in the T c .…”

“…A variety of guests like 4-methoxyanilinium (4-MOA) [ T c = 153 K], 2,6-diisopropylanilinium (DIPA) [ T c = 132 K], protonated 4-aminotetrahydrothiopyran (ATHTP) [ T c = 392 K], protonated 3-cyclopentene amine (Hcta) [ T c = 403 and 394 K for anion = BF 4 – and ClO 4 – respectively], and 2,6-difluorobenzylamine (DFBA) [ T c = 377 K (X = ClO 4 – ) and 391 K (X = ReO – )] have been designed. Solvents like acetonitrile have also been shown to control the phase transition for guest (cation)F 2 CHCH 2 NH 3 + . Subtle modifications by H/F substitution and symmetry lowering of spherical molecules guided by the quasi-spherical theory have been investigated …”

A Cd-based perovskite with optical-electrical multifunctional response

“…The 2D perovskites are formed by n-layered inorganic frameworks, and organic cations interspersed within two adjacent inorganic layers. The extraordinary tunable structures endow these perovskites with diverse properties, such as phase transition, [19][20][21][22][23][24] photoluminescence (PL), [25][26][27] narrow energy band gap, [28][29][30] optoelectronic, [31][32][33] and ferroelastic [34][35][36] or ferroelectric properties. [37][38][39][40][41][42][43] In the past few decades, there have been plenty of reports on the above-mentioned materials.…”