ライフサイエンスコーパス: polaron

1 ying lattice distortion form a new entity, a polaron.

2 imine formation, caused by deprotonation of polarons.

3 distorted metal sites consistent with small polarons.

4 nd to form new quasiparticles known as Fermi polarons.

5 ctuations of the lengths of these unconfined polarons.

6 arriers in these materials existing as large polarons.

7 imentally and theoretically, is transport by polarons.

8 e presence of a large density of delocalized polarons.

9 the hard gap, associated with bound magnetic polarons.

10 citations and are best explained as magnetic polarons.

11 rrier-lattice coupling associated with small polarons.

12 n to carrier conductivity and bound magnetic polarons.

13 scades that lead to exceptionally long-lived polarons.

14 ce of g-factor between positive and negative polarons.

15 in birnessite with the concept of the small polaron, a special kind of point defect.

16 The electron polaron, a spin-1/2 excitation, is the fundamental negat

17 s which was attributable to the formation of polarons along the main chains.

18 uge transition state energies for hopping of polarons along wire segments.

19 bsorption spectra of DPA(-*) and the adenine polaron (An(+*)) are observed.

20 caused PPy oxidation, with the formation of polaron and imine species strongly dependent on the surr

21 he chemically oxidized ladders revealed both polaron and intervalence absorption bands.

22 les only the spectral predictions of a small polaron and not the pre-edge features expected for mid-g

23 competitive with charge recombination of the polaron and P (-*) only at short P-G distances.

24 ell as spectroscopic signatures of SWNT hole polaron and PDI radical anion (PDI(-.) ) states.

25 ving both an intimately associated SWNT hole polaron and PDI(-.) charge-separated state, and a relate

26 c signatures characteristic of the SWNT hole polaron and PDI(-.) states.

27 The dynamics of negative polaron and triplet exciton transport within a series of

28 uasiparticles--such as excitons, dropletons, polarons and Cooper pairs.

29 The results indicate that negative polarons and excitons are transported rapidly, on averag

30 Moreover, we calculate the effective mass of polarons and find a smooth crossover from weak to strong

31 as used to monitor bias-induced formation of polarons and imines in PPy layers incorporated into soli

32 y the screening, leading to the formation of polarons and thereby extending the lifetime.

33 ce for a disputed pairing transition between polarons and tightly bound dimers, which provides insigh

34 onduits for transport of electrons (negative polaron) and triplet excitons.

35 ving electron-phonon interactions, plasmons, polarons, and a phonon analog of the vacuum Rabi splitti

36 Thus, triplet-polaron annihilation that leads to long-term luminescent

37 ance are discussed, and bipolarons and small polarons are identified as the responsible photorefracti

38 ic pressure suggest Fe2+-Fe3+ hopping (small polaron) as the dominant conductivity mechanism, the pre

39 atures of anionic PTCDI-C8 species and broad polaron bands when the organic semiconductor layer is do

40 ain polaron, the result of each chain of the polaron being closer to some of the polarization charge

41 gave a single band demonstrating the classic polaron-bipolaron transition.

42 Trapping of the (A 3-4) (+*) polaron by a G base at the opposite end of the A-tract f

43 various hypotheses including those of large-polaron charge transport and fugitive electron spin pola

44 nce PPy conductivity depends strongly on the polaron concentration, monitoring its concentration is c

45 e, the solvent dielectric, and nanotube hole polaron concentration.

46 ature measurements are consistent with small polaron conduction, but at higher temperatures, which ar

47 Transport by these polarons could explain the results of Giese et al., rece

48 sport behavior, suggests that bound magnetic polarons create the hard gap in the system that can be c

49 rt the observation of dangling-bond magnetic polarons (DBMPs) in 2.8-nm diameter CdSe colloidal nanoc

50 vide a direct measure of the (6,5) SWNT hole polaron delocalization length (2.75 nm); (iii) determine

51 The stability of the polarons depends on the organization of the polymer-full

52 Because the electron polaron dimension can be linked to key performance metri

53 gest that this ultrafast transport is due to polaron drift, which has been shown to lead to similar m

54 issipative quantum tunnelling subject to the polaron effect.

55 We conclude that polarons emerge within 300 fs.

56 t-off, but physically meaningful regularized polaron energies are also presented.

57 Polaron energies obtained by our method are in excellent

58 ed reversible polythiophene oxidation to its polaron form accompanied by a one-electron viologen redu

59 ion "propagates" by growth of the conducting polaron form away from the source electrode.

60 The polaron formation at low temperatures occurs by optical

61 The dynamics of two-dimensional small-polaron formation at ultrathin alkane layers on a silver

62 er phases (regardless of the strength of the polaron formation energy) is explained, and the trapped

63 duce the internal quantum efficiency of free polaron formation in the bulk-heterojunction blends of C

64 However, the role of small polaron formation in the photoexcited state and how this

65 ests that a universal mechanism may underlie polaron formation in transition metal oxides, and provid

66 Small polaron formation is evidenced by a sub-100 fs splitting

67 Small polaron formation is known to limit ground-state mobilit

68 -dependent localization of carriers by small polaron formation is potentially a limiting factor in ha

69 The small polaron formation kinetics reproduces the triple-exponen

70 ts energetic carriers via solvation or large polaron formation on time scales competitive with that o

71 The small polaron formation probability, hopping radius and lifeti

72 atially resolved Raman spectroscopy revealed polaron formation throughout the polymer layer, even awa

73 ds by the inertial motion of substrate ions (polaron formation) and, more slowly, by adsorbate molecu

74 ng the initial coherent dynamics of magnetic polaron formation, and highlighting the importance of ma

75 Using this value and taking into account polaron formation, we find the wave functions of holes t

76 nitrile, oxidation led primarily to cationic polaron formation, while oxidation in 0.1 M NaOH in H(2)

77 enting challenges with charge transport from polaron formation.

78 This is a bending polaron, formation of which should be critically depende

79 ttice, that can be described as a collective polaron formed by a polariton condensate.

80 nment interaction, due to the new composite (polaron) formed by excitons and vibrons.

81 the variable-range hopping of self-localized polarons found in more disordered polymers.

82 in these hairpins is completely dominated by polaron generation and movement to a trap site rather th

83 orption spectroscopy was used to investigate polaron generation efficiency as well as recombination d

84 nd yttrium-doped LZO, which leads to a small-polaron hole.

85 coworkers proposed that transport occurs by polaron hopping between sites having approximately equal

86 We demonstrate that a small polaron hopping conduction mechanism dominates from 250

87 hopping that we identify as phonon-assisted polaron hopping.

88 mally induced hopping, or by phonon-assisted polaron hopping.

89 The stabilization of this polaron impedes equilibration of charge density across t

90 heoretically debated properties of the Fermi polaron in a two-dimensional Fermi gas.

91 the wavefunction and energy of the solvated polaron in DNA with a simple model in which the charge w

92 ely weak absorption bands of the delocalized polaron in the visible and near-infrared spectral ranges

93 lly delocalized electrons self-trap as small polarons in a localized state within a few hundred femto

94 Here we create and investigate Fermi polarons in a two-dimensional, spin-imbalanced Fermi gas

95 tingly, we find the 1D-approach in push-pull polarons in agreement to the model, pointing at the stro

96 y consistent with the experiments describing polarons in anions, bipolarons in dianions of short olig

97 ty demonstrates the potential role played by polarons in charge transport in CH3NH3PbI3.

98 ianions of short oligomers, and side-by-side polarons in dianions of long oligomers, while results fr

99 to change the effective interactions between polarons in different sites from attractive to zero.

100 r mechanism is analogous to the formation of polarons in ionic solids and mediates attractions by fac

101 Here we demonstrate electron polarons in pi-conjugated multiporphyrin arrays that fea

102 visualized exciton quenching induced by hole polarons in single-polymer chains in a device geometry.

103 also reveal that diffusion of supramolecular polarons in the nanowires repairs structural defects the

104 In contrast, polarons in the single-unit polymer emerge to a multi- d

105 A toolbox for the quantum simulation of polarons in ultracold atoms is presented.

106 Moreover, the reduced acceptors form polarons in which the electron is shared over several mo

107 lized polarons is the probable mechanism for polaron-induced exciton quenching.

108 (F-V/SPS) was employed to study exciton-hole polaron interactions and interfacial charge transfer pro

109 A hairpins is consistent with formation of a polaron involving an estimated 3-4 A bases.

110 of the NIR and IR spectra indicates that the polaron is delocalized over 2-3 porphyrin units in the l

111 Theory predicts that this type of polaron is delocalized over approximately four bases in

112 a many-body system, such as a phonon bath, a polaron is formed.

113 The binding energy of the resulting polaron is somewhat larger than that obtained for the si

114 d state devices, and the formation of stable polarons is dependent on the tendency for deprotonation

115 hat the polymer conformation hosting nascent polarons is not significantly different from that near e

116 Formation of polarons is supported by spectroscopy and electrical-con

117 tep "energy funneling" to trapped, localized polarons is the probable mechanism for polaron-induced e

118 tance transport, such as thermally activated polaron-like hopping, that incorporate radical cation de

119 s inhibited by carrier trapping in transient polaron-like states.

120 -ultraviolet measurements suggest that small polaron localization is responsible for the ultrafast tr

121 more applicable to the lower mantle, a large polaron mechanism is suggested.

122 It is shown that a previously proposed polaron model is successful in predicting NDR behavior,

123 s, we hypothesize a new defect-induced bound polaron model, which is generally applicable to other de

124 r DNA charge transport is distinguished from polaron models.

125 bed by the theoretical predictions for small polaron motion made by Holstein in 1959.

126 ing, and twinkling phenomena associated with polaron motion.

127 -radiolysis results, the data show that each polaron occupies 4.5 +/- 0.5 fluorene units, most probab

128 longer conjugated systems; instead they are polarons occupying approximately four fluorene repeat un

129 The polarons of F(3) and F(4) display sharp absorption bands

130 ers, an injected electron or hole can form a polaron on a DNA stack.

131 ns revealed localizations of spin densities (polarons) on molecular wire radical cations.

132 ealed two bands attributable to formation of polarons, one in the visible region (pF+* at 580 nm, pF-

133 The spectral changes associated with polarons or imines were stable for at least several hour

134 Here, we present a novel method to suppress polaron pair recombination at the donor-acceptor domain

135 sity functional theory calculations in which polaron pair recombination rate is suppressed by resonan

136 als and charged acceptors, which convert the polaron pair spin state from singlet to triplet.

137 copic measurements clearly show an increased polaron pair yield for higher excess energies directly a

138 Geminate polaron-pair recombination directly to the triplet state

139 s reveal that 16F-6C6 has singlet biradical (polaron-pair) character in the doubly oxidized ground st

140 a significant population of charge-separated polaron pairs along the pi-stacking direction.

141 otovoltaic devices has been recombination of polaron pairs at the donor-acceptor domain interfaces.

142 or results from the intermolecular nature of polaron pairs in oligomers.

143 T, an additional nanosecond recombination of polaron pairs is observed in conjunction with an increas

144 ly, in the oligomer we observe a lifetime of polaron pairs which is one order of magnitude longer.

145 k states, such as charge transfer states and polaron pairs, play an important role in the dynamics an

146 f species such as charge-transfer states and polaron pairs.

147 rlap, which likely act as precursors for the polaron pairs.

148 Here, we probe polaron photogeneration dynamics at polymer:fullerene he

149 ctra with two bands, better described as two polarons, possibly residing side-by-side in the F(n) cha

150 The Fermi polaron problem constitutes the extreme, but conceptuall

151 Despite the importance of the polaron problem for a wide range of physical systems, a

152 ge over OLEDs in terms of minimizing exciton-polaron quenching.

153 ensis MR-1 leads to the disappearance of the polaron (radical cation) band at >900 nm and an increase

154 ve been proposed, such as formation of large polarons, Rashba effect, ferroelectric domains, and phot

155 e an experimental method for determining the polaron relaxation energy in solid-state organic D-A ble

156 e perovskite lattice is protected as a large polaron responsible for the remarkable photophysical pro

157 We further outline the molecular polaron's potential as a control element in phononic cir

158 ties, should distort its structure to form a polaron, Schuster and coworkers proposed that transport

159 The photogenerated charge excitations (polarons) show two-dimensional delocalization that resul

160 Using a simple model for the polaron, similar to that used for conjugated polymers su

161 separated state involving PDI(-.) and a hole polaron site produced via hole migration along the SWNT

162 Large polaron spatial dimensions result from weak electron-lat

163 vances in organic spin response include long polaron spin-coherence times measured by optically detec

164 uniquely associated with the (6,5) SWNT hole polaron state; and (iv) demonstrate that modulation of s

165 y is attributed to the formation of extended polaron states as a result of local self-organization, i

166 ed, leading, for example, to the creation of polaron states in solids or hydration shells around prot

167 opose that radical cations form self-trapped polarons that migrate by thermally activated hopping.

168 structural distortions, giving rise to small polarons that serves as a bottleneck for further Li-ion

169 For one type of polaron, the properties are determined by polarization o

170 is realized via the formation of a molecular polaron, the result of a Fano-type quantum interference,

171 rger than that obtained for the single-chain polaron, the result of each chain of the polaron being c

172 proach for analyzing a paradigmatic model of polarons, the so-called Frohlich model, and apply it to

173 ns, we study novel quasiparticles--repulsive polarons--the lifetime of which determines the possibili

174 ent on the tendency for deprotonation of the polaron to the imine.

175 t exciton fission via resonant tunnelling to polarons to be a ubiquitous feature of these systems.

176 evels can drive spectral shifts of SWNT hole polaron transitions as well as regulate SWNT valence and

177 Negative polaron transport is studied by using pulse radiolysis/t

178 homogeneous lattice distortions that provide polaron-type cage-to-cage electron hopping.

179 elding spectra with the two bands typical of polarons upon single reduction.

180 ber of different sequences, we find that the polaron wavefunction is predominantly on one of the two

181 olarons: excess electrons reside as separate polarons when two or more electrons were injected.

182 olymeric semiconductors, charge carriers are polarons, which means that the excess charge deforms the

183 urity and BEC gives rise to the formation of polarons whose mutual interaction can be effectively tun

184 Bose-Einstein condensates (BECs) composed of polarons would be an advance because they would combine