Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
The introduction of [B(OH) 3 ] extends the parallel layers π-conjugated C–O groups and optimizes arrangement due to directional interaction hydrogen bonds.
Язык: Английский
Materials Horizons, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Aminopyrazine forms low-dimensional structures with enhanced birefringence, driven by optimal coplanarity among birefringent active units regulated [N–H⋯X] hydrogen bonds.
Язык: Английский
Процитировано
2
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(44)
Опубликована: Июль 10, 2024
Anisotropy is crucial for birefringence (Δn) in optical materials, but optimizing it remains a formidable challenge (Δn >0.3). Supramolecular frameworks incorporating π-conjugated components are promising achieving enhanced because of their structural diversity and inherent anisotropy. Herein, we first synthesized (C
Язык: Английский
Процитировано
8
Chemical Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Birefringent materials, capable of manipulating light polarization, are pivotal in advanced optical technologies. Traditionally, the development such materials has predominantly focused on purely inorganic compounds, which often exhibit limited birefringence. Herein, we present a new 3-pyridinesulfonate birefringent crystal, Ca(3-C5H4NSO3)2·4H2O, synthesized via hydrogen-bonded regulation strategy designed to enhance coplanarity [3-pySO3] groups. As expected, Ca(3-C5H4NSO3)2·4H2O demonstrates notably large birefringence 0.286@532 nm, exceeding that most commercially available crystals. Furthermore, this compound outstanding environmental stability and short ultraviolet (UV) absorption cutoff edge at 257 accompanied by wide band gap 4.4 eV. A combination structural analysis theoretical calculations unraveled crucial role hydrogen bonds optimizing arrangement rings. This effectively induces high degree facilitates formation quasi-2D layered structure, thereby contributing exceptional anisotropy Ca(3-C5H4NSO3)2·4H2O. These findings highlight as promising UV crystal underscore efficacy bond engineering for designing with enhanced properties.
Язык: Английский
Процитировано
1
Angewandte Chemie, Год журнала: 2024, Номер 136(44)
Опубликована: Июль 10, 2024
Abstract Anisotropy is crucial for birefringence (Δ n ) in optical materials, but optimizing it remains a formidable challenge >0.3). Supramolecular frameworks incorporating π‐conjugated components are promising achieving enhanced because of their structural diversity and inherent anisotropy. Herein, we first synthesized (C 6 H NO 2 + Cl − ( NAC then constructed halogen‐bonded supramolecular framework I 4 INA by halogen aliovalent substitution with . The organic moieties protonated deprotonated nicotinic acid NA ), respectively. antiparallel arrangement birefringent‐active units leads to significant differences the bonding characteristics between interlayer intralayer domains. Moreover, [O⋅⋅⋅I ⋅⋅⋅N] bond 1D [I ] chain exhibits stronger interactions stricter directionality, resulting more pronounced in‐plane anisotropy intrachain interchain directions. Consequently, exceptional birefringent performance, value 0.778 at 550 nm, twice that (0.363 nm). This significantly exceeds those commercial crystals, such as CaCO 3 (0.172 546 nm), highest reported among ultraviolet crystals. work presents novel design strategy employs bonds connection sites modes units, opening new avenues developing high‐performance
Язык: Английский
Процитировано
3
The Journal of Physical Chemistry Letters, Год журнала: 2025, Номер unknown, С. 1881 - 1886
Опубликована: Фев. 16, 2025
Deep ultraviolet (UV) nonlinear optical (NLO) crystals are important optoelectronic materials in high-tech applications. How to effectively design a noncentrosymmetric (NCS) structure, which is the rigorous prerequisite for second-order NLO crystals, remains great challenge. Introducing chiral methylpiperazine into phosphates achieved two polar phosphates, R- and S-(C5H14N2)(HPO4)·H2O. The units not only serve as structure-directing agents generating NCS structures but also do have negative impact on UV absorption, making maintain short absorption edges below 200 nm. They exhibit moderate activities of ∼0.5/0.6 KH2PO4 (KDP). Hirshfeld-surface analysis reveals that hydrogen-bonding along with Coulomb interactions rivet crystallization space group. Dipole moment calculations confirm direction macroscopic polarization. first-principles indicate properties mainly originate from synergistic interaction inorganic organic units. This study will provide useful insights targeted materials.
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Апрель 7, 2025
Abstract Exploring excellent UV birefringent crystals is very urgent for use in advanced optical technologies to manipulate light polarization of great significance. Planar π‐conjugated groups are interest researchers the exploration materials with pronounced birefringence (∆ n ). However, systematic understanding cation and anion groups‐regulated structure–property relationships requires further investigation. Herein, metal engineering applied achieve controlled synthesis novel compounds, enabling precise coordination modulation correlation studies. In this work, eight new 3‐pyridinesulfonate formula A(3‐C 5 H 4 NSO 3 ) x ·yH 2 O ( A = Li, Na, Mg, Ca, Zn, Sr, Ba; 1 2, y 0, 4, 6) Na(3‐C )·2NaBF ·(3‐C H) synthesized characterized. Notably, these exhibit strong anisotropy, values ranging from 0.106 0.345 (measured at 546 nm) short cut‐off edges below 280 nm. Specifically, Li(3‐pySO exhibits an exceptionally large nm), which represents highest value within metal‐containing system surpasses that most commercially available crystals. Moreover, analysis elucidates a comprehensive cation‐structure‐birefringence framework, thereby establishing cation‐driven design principle high‐performance
Язык: Английский
Процитировано
0
Advanced Optical Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 29, 2025
Abstract The ideal foundation for constructing nonlinear optical (NLO) and birefringent materials is provided by planar π‐conjugated units with high hyperpolarizability anisotropy. However, the bandgap diminishes number of functional joined covalent bonds, making their employment challenging in short‐wavelength spectral region. To overcome this limitation, a strategy devised that assembles different via hydrogen bonding. By using [C 3 H x O 4 ] ( = 2–4), [CN 7 ], 6 as fundamental building blocks omitting metal cations, six compounds are effectively synthesized. ][C exhibits moderate second harmonic generation (SHG) response (1.2 × KDP) along shortest phase‐matching wavelength 255 nm. Additionally, 2 display significant birefringence 0.209 0.182 at 1064 nm, respectively, possess short cutoff edges 233 200 indicating potential ultraviolet NLO materials. This study confirms role bonding structural rearrangement, which thereby reinforces properties.
Язык: Английский
Процитировано
0
Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
The introduction of [B(OH) 3 ] extends the parallel layers π-conjugated C–O groups and optimizes arrangement due to directional interaction hydrogen bonds.
Язык: Английский
Процитировано
1