Robust and color-tunable afterglows from guanidine derivatives

2021 ◽  
Author(s):  
Zihao Zhao ◽  
Yuxuan Li ◽  
Xiaohong Chen ◽  
Yongming Zhang ◽  
Wang Zhang Yuan
Keyword(s):  
Hydrogen Bonding ◽  
Guanidine Derivatives ◽  
Color Tunable ◽  
Effective Hydrogen

Robust and color-tunable afterglows are readily achieved from guanidine derivatives, i.e. dicyandiamide and glycocyamine, through the synergy interplay between the clustering of electron-rich units and effective hydrogen bonding.

Trimethylsulfonium Lead Triiodide (TMSPbI3) For Moisture-Stable Perovskite Solar Cells

2021 ◽  
Author(s):  
Md. Mahbubur Rahman ◽  
Ahmed Arif ◽  
Chuang-ye Ge ◽  
Ranbir Singh ◽  
Kicheon Yoo ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Organic Cations ◽  
Hydrogen Bonding Interaction ◽  
Lead Iodide ◽  
Bonding Interaction ◽  
Moisture Stability ◽  
Methylammonium Lead Iodide ◽  
Effective Hydrogen

Conventional, high-efficiency, hybrid organic—inorganic perovskites (e.g., methylammonium lead iodide (MAPbI3), formamidinium lead iodide (FAPbI3)) having ammonium-based organic cations exhibits poor moisture stability mainly due to the effective hydrogen bonding interaction...

Color-Tunable and Stimulus-Responsive Luminescent Liquid Crystalline Polymers Fabricated by Hydrogen Bonding

2019 ◽  
Vol 11 (16) ◽  
pp. 15051-15059 ◽  
Author(s):  
Lei Tao ◽  
Ming-Li Li ◽  
Kai-Peng Yang ◽  
Yan Guan ◽  
Ping Wang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Crystalline Polymers ◽  
Color Tunable ◽  
Stimulus Responsive

Effect of hydrogen bonding on catalytic activity of some manganese porphyrins in epoxidation reactions

2011 ◽  
Vol 15 (03) ◽  
pp. 181-187 ◽  
Author(s):  
Tahereh Alemohammad ◽  
Nasser Safari ◽  
Samira Osati
Keyword(s):  
Hydrogen Bonding ◽  
Catalytic Activity ◽  
Axial Ligand ◽  
Hydroxyl Groups ◽  
Manganese Porphyrins ◽  
Bonding Effect ◽  
Meso Position ◽  
Hydrogen Bonding Effect ◽  
Mn Porphyrins ◽  
Effective Hydrogen

Mn (III)-tetra phenyl porphyrin-acetate (MnTPPOAc) and some kinds of meso-phenyl substituted porphyrins by hydroxyl groups and their Mn (III) complexes were synthesized. These Mn -porphyrins were used as catalyst in the epoxidation of various alkenes with tetra-n-butylammonium hydrogen monopersulfate (n- Bu4NHSO5 ) as oxidant and tetra-n-butylammonium acetate (n- Bu4NOAc ) as the axial ligand. The following order of catalytic activity was observed for cyclooctene: T(2,3-OHP)PMnOAc ≫ T(2,4,6-OHP)PMnOAc ≥ T(4-OHP)PMnOAc ≥ T(2,6-OHP)PMnOAc ≥ TPPMnOAc and T(2,3-OHP)PMnOAc ≫ TPPMnOAc > T(4-OHP)PMnOAc > T(2,4,6-OHP)PMnOAc > T(2,6-OHP)PMnOAc for other alkenes. Different activity and stability of the catalysts were interpreted based on the hydrogen bonding between hydroxyl groups with appropriate orientation on the meso-position of the phenyl groups and axial bases or oxidant. T(2,3-OHP)PMnOAc catalyst has shown optimal condition for effective hydrogen bonding. In the case of other catalysts, electronic and steric factors overcome the hydrogen bonding effect.

trans-1,2-Diaminocyclohexane-based sulfonamides as effective hydrogen-bonding organocatalysts for asymmetric Michael–hemiacetalization reaction

2018 ◽  
Vol 8 (17) ◽  
pp. 4358-4363 ◽  
Author(s):  
Maciej Dajek ◽  
Rafał Kowalczyk ◽  
Przemysław J. Boratyński
Keyword(s):  
Hydrogen Bonding ◽  
Effective Hydrogen

Simple sulfonamide organocatalysts deliver unparalleled efficiency in the asymmetric Michael–hemiacetalization cascade.

scholarly journals Pyridin-2-yl Guanidine Derivatives: Conformational Control Induced by Intramolecular Hydrogen-Bonding Interactions

2011 ◽  
Vol 76 (22) ◽  
pp. 9216-9227 ◽  
Author(s):  
Brendan Kelly ◽  
Daniel H. O'Donovan ◽  
John O'Brien ◽  
Thomas McCabe ◽  
Fernando Blanco ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Intramolecular Hydrogen Bonding ◽  
Conformational Control ◽  
Guanidine Derivatives ◽  
Hydrogen Bonding Interactions ◽  
Intramolecular Hydrogen

Clustering-triggered Emission of Nonaromatic Polymers with Multitype Heteroatoms and Effective Hydrogen Bonding

2021 ◽  
Vol 37 (1) ◽  
pp. 177-182
Author(s):  
Fahmeeda Kausar ◽  
Tianjia Yang ◽  
Zihao Zhao ◽  
Yongming Zhang ◽  
Wang Zhang Yuan
Keyword(s):  
Hydrogen Bonding ◽  
Effective Hydrogen

Highly Effective Hydrogen-Bonding Receptors for Guanine Derivatives

1995 ◽  
Vol 34 (19) ◽  
pp. 2163-2165 ◽  
Author(s):  
Thomas W. Bell ◽  
Zheng Hou ◽  
Steven C. Zimmerman ◽  
Paul A. Thiessen
Keyword(s):  
Hydrogen Bonding ◽  
Highly Effective ◽  
Guanine Derivatives ◽  
Effective Hydrogen

Hydrogen bonding in liquid methanol at ambient conditions and at high pressure

2000 ◽  
Vol 98 (3) ◽  
pp. 125-134 ◽  
Author(s):  
T. Weitkamp, J. Neuefeind, H. E. Fisch
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Ambient Conditions
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