scholarly journals Correlated Triplet Pair Formation Activated by Geometry Relaxation in Directly Linked Tetracene Dimer (5,5′-Bitetracene)

ACS Omega ◽  
2020 ◽  
Author(s):  
Katsuyuki Shizu ◽  
Chihaya Adachi ◽  
Hironori Kaji
Keyword(s):  
Pair Formation ◽  
Triplet Pair

scholarly journals Elucidation of Excitation Energy Dependent Correlated Triplet Pair Formation Pathways in an Endothermic Singlet Fission System

2017 ◽  
Vol 140 (13) ◽  
pp. 4613-4622 ◽  
Author(s):  
Arya Thampi ◽  
Hannah L. Stern ◽  
Alexandre Cheminal ◽  
Murad J. Y. Tayebjee ◽  
Anthony J. Petty ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Pair Formation ◽  
Singlet Fission ◽  
Triplet Pair ◽  
Energy Dependent

scholarly journals Competition between triplet pair formation and excimer-like recombination controls singlet fission yield

2021 ◽  
Vol 2 (2) ◽  
pp. 100339
Author(s):  
Yuqing Huang ◽  
Irina A. Buyanova ◽  
Chanakarn Phansa ◽  
Maria E. Sandoval-Salinas ◽  
David Casanova ◽  
...  
Keyword(s):  
Pair Formation ◽  
Singlet Fission ◽  
Fission Yield ◽  
Triplet Pair

scholarly journals Vibronically coherent ultrafast triplet-pair formation and subsequent thermally activated dissociation control efficient endothermic singlet fission

2017 ◽  
Vol 9 (12) ◽  
pp. 1205-1212 ◽  
Author(s):  
Hannah L. Stern ◽  
Alexandre Cheminal ◽  
Shane R. Yost ◽  
Katharina Broch ◽  
Sam L. Bayliss ◽  
...  
Keyword(s):  
Pair Formation ◽  
Singlet Fission ◽  
Thermally Activated ◽  
Triplet Pair

scholarly journals Prediction of Sodium Substitution Sites in Octacalcium Phosphate: The Relationships of Ionic Pair Ratios in Reacting Solutions

Ceramics ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 240-248
Author(s):  
Yuki Sugiura ◽  
Masanori Horie
Keyword(s):  
Dicarboxylic Acid ◽  
Experimental Studies ◽  
Ionic Species ◽  
Octacalcium Phosphate ◽  
Pair Formation ◽  
Formation Processes ◽  
Ionic Pair ◽  
Substitution Process ◽  
Sodium Substitution ◽  
Acidic Conditions

Octacalcium phosphate (OCP) is widely used in biomaterial fabrication by virtue of its unique crystal structure and low environmental loading. Although various ion and molecule substitution methods into the OCP unit lattice have been introduced, it remains unclear which factors and mechanisms dominate the substitution process. Experimental studies have indicated that Na alkali metal ions are substituted at the P3 PO4 conjugated site in acidic to weakly acidic conditions and the P5 PO4 conjugated site in neutral to weak basic conditions. Ionic species calculation methods have indicated that the pair ratios of Na and HPO42− (NaHPO4−) are small in acidic reacting solutions but large under weakly basic conditions. Consequently, the roles played by NaHPO4− and ionic pair formation processes are thought to dominate ion and molecule substitution into the OCP unit lattice. Such ionic pair formation strongly inhibits dicarboxylic acid substitution into the OCP unit lattice due to the replacement of the Ca ion, which conjugates P5 PO4 as an anchor of dicarboxylic acid.

Extraction of organic acids by ion-pair formation with tri-n-octylamine

1985 ◽  
Vol 178 ◽  
pp. 189-195 ◽  
Author(s):  
M. Puttemans ◽  
L. Dryon ◽  
D.L. Massart
Keyword(s):  
Organic Acids ◽  
Ion Pair ◽  
Pair Formation ◽  
Ion Pair Formation

Sexual dimorphism in size and plumage of the polyandrous Dotterel (Charadrius morinellus): sex roles and constraints on sexual selection

1988 ◽  
Vol 66 (6) ◽  
pp. 1334-1341
Author(s):  
John Atle Kålås
Keyword(s):  
Sexual Dimorphism ◽  
Wing Length ◽  
Pair Formation ◽  
Egg Laying ◽  
Published Data ◽  
Museum Specimens ◽  
Time Activity ◽  
Monogamous Species ◽  
First Clutch ◽  
Behaviour Data

Data on live birds and previously published data reveal that female Dotterel (Charadrius morinellus) were on average larger than males for all measurements. However, sexual dimorphism on the basis of size appears weaker than expected when Dotterel are compared with closely related monogamous species. Female museum specimens have less disrupted (brighter) plumage colours than males, and dimorphism in plumage is more pronounced than it is in size. A discriminant analysis based on plumage characters did not separate the sexes totally, however. Females moult earlier in the spring than males, but summer plumage is still not fully developed for all females by the first period of pair formation, suggesting that female plumage is most important in reproduction only after the first clutch is complete. No significant differences were evident in wing length and plumage colour between 1882–1917 and 1957–1982. Time–activity studies on the polyandrous Dotterel during the arrival, prelaying, and egg-laying periods showed small differences between the sexes in the amount of time devoted to agonistic and courtship behaviour. Data from prelaying periods showed no difference between the sexes as to who initiates bouts of courtship and agonistic behaviour. The behaviour of paired birds was highly synchronized. Three hypotheses on the slight sexual dimorphism in size and plumage of this polyandrous species are presented and discussed.

scholarly journals Pair formation and collapse in imbalanced fermion populations with unequal masses

2009 ◽  
Vol 86 (4) ◽  
pp. 47006 ◽  
Author(s):  
G. G. Batrouni ◽  
M. J. Wolak ◽  
F. Hébert ◽  
V. G. Rousseau
Keyword(s):  
Pair Formation
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