ライフサイエンスコーパス: intersystem

1 ition and the reaction energetics creates an intersystem barrier and is responsible for slowness of t

2 d dissociation constant, pK', as a proxy for intersystem comparison.

3 n insertion into a Ta-N bond in 1 through an intersystem conversion from triplet to singlet energy su

4 times, to adopt stable helical structures by intersystem cross-pairing.

5 In the absence of oxygen, biradical 8 intersystem crosses to form photoenols (Z)-9 and (E)-10

6 The work demonstrated the viability of intersystem crossing (conical intersection located) lead

7 e that (6,5) SWNTs exhibit rapid S(1)-->T(1) intersystem crossing (ISC) (tau(ISC) ~20 ps), a sharp T(

8 While the singlet to triplet intersystem crossing (ISC) for the titled complexes is a

9 in-orbit (SO) interaction and focused on the intersystem crossing (ISC) from the first excited single

10 n-orbit coupling (SOC), and thus facilitates intersystem crossing (ISC) from the singlet to triplet m

11 e channel, a submerged barrier to insertion, intersystem crossing (ISC) from the triplet to the singl

12 The rate of intersystem crossing (ISC) in hexafluorobenzene and othe

13 ossibility of the faster energy transfer via intersystem crossing (ISC) in the metalated derivatives

14 ts are rationalized in terms of the rates of intersystem crossing (ISC) in the newly formed geminate

15 a carbene) a slow rate of singlet to triplet intersystem crossing (isc) in this solvent because the o

16 1G*) of the unsubstituted tolane showed that intersystem crossing (ISC) is favored with large spin-or

17 Intersystem crossing (ISC) is improved through the heavy

18 Ultrafast, reversible intersystem crossing (ISC) is reported under ambient con

19 Intersystem crossing (ISC) occurs in hundreds of femtose

20 ction, was presumed to occur via S(1)-->T(1) intersystem crossing (ISC) of the sensitizer.

21 fetime is shorter than the time required for intersystem crossing (ISC) of the triplet radical pair t

22 Its temperature-independent and activated intersystem crossing (ISC) pathways are at least 18 and

23 th NIR absorptivity up to 850 nm, near-unity intersystem crossing (ISC) quantum yields (PhiISC), and

24 ating solvents on singlet-to-triplet carbene intersystem crossing (ISC) rates has been studied with d

25 t singlet state S1 that undergoes picosecond intersystem crossing (ISC) to the lowest triplet T1.

26 state has a lifetime of ~70 ns and undergoes intersystem crossing (ISC) to the T1 state.

27 The singlet nitrene undergoes intersystem crossing (ISC) to the triplet nitrene in apr

28 ions; (iii) it enhances the quantum yield of intersystem crossing (ISC), i.e., it is capable of sensi

29 A methyl group retards the rate of intersystem crossing (ISC), relative to a hydrogen atom,

30 other critical factor affecting the rate of intersystem crossing (ISC)--singlet-triplet energy separ

31 point and the S1 equilibrium geometry favors intersystem crossing (ISC).

32 ial energy surfaces (PESs) interconnected by intersystem crossing (ISC).

33 We have proposed a model to describe reverse intersystem crossing (rISC) in donor-acceptor charge tra

34 )P-NI(-*)), which undergo rapid radical pair intersystem crossing (RP-ISC) to produce the triplet RPs

35 econd time scale is mediated by radical pair intersystem crossing (RP-ISC), as evidenced by the obser

36 ents for conversion to diradical 16 prior to intersystem crossing and beta scission to form the phosp

37 The processes of ultrafast intersystem crossing and charge transfer vary between th

38 +/- 1 kcal/mol) and decay predominantly via intersystem crossing and fluorescence at room temperatur

39 al that (1*)PDI undergoes ultrafast enhanced intersystem crossing and internal conversion with tau ap

40 ess provided an unprecedented enhancement of intersystem crossing and subsequent switching to the pho

41 e pairs are shown to be subject to efficient intersystem crossing and terminally recombine into F8BT

42 the silyl group tuned the triplet to singlet intersystem crossing and the electrophilicity) and on th

43 The data on Cr(acac)(3) indicate that intersystem crossing associated with the (4)T(2) --> (2)

44 processes due to the internal conversion and intersystem crossing at the Franck-Condon state geometry

45 iplet fusion at NPB sites not E-type reverse intersystem crossing because of the presence of the NPB

46 lated by a single electron spin flip and the intersystem crossing becomes inhibited, as indicated by

47 ite isolation of porphyrin ligands, enhanced intersystem crossing by heavy Hf centers, and facile (1)

48 ed, either photoinduced electron transfer or intersystem crossing compete successfully with the ring-

49 As such, a fairly efficient radical ion pair intersystem crossing converts the initially formed singl

50 n in GQ-1 is slowed by enhanced radical-pair intersystem crossing driven by the greater number of hyp

51 ., (silox)3M + ole) where M = Nb, leading to intersystem crossing events that facilitate dissociation

52 let states of the molecules make the reverse intersystem crossing feasible at room temperature even i

53 tates, which undergo subsequent radical pair intersystem crossing followed by charge recombination to

54 Intersystem crossing followed by ring closure gives the

55 p for charge recombination from radical pair intersystem crossing for n < 4 to coherent superexchange

56 distributions, branching ratios and role of intersystem crossing for the multichannel, addition-elim

57 t state of the myoglobin ((3)MMb) created by intersystem crossing from (1)MMb likewise undergoes redu

58 vibrationally hot S(0) of 1 forms 2, whereas intersystem crossing from S(1K) to T(1K) results in 3.

59 iplet-state SO2 ( (3)B1), which results from intersystem crossing from the excited singlet ( (1)A2/ (

60 ations for (3)DOM* were enhanced, suggesting intersystem crossing from the singlet state to the tripl

61 Thus, intersystem crossing from the triplet biradical surface

62 The efficiency of intersystem crossing from the two singlet state conforma

63 the charge transfer dynamics and the rate of intersystem crossing in metallacycles of different geome

64 ls of spin polarization readily generated by intersystem crossing in photo-excited pentacene and othe

65 The requisite intersystem crossing in the open-shell structure is acco

66 this model can be used to tune the enhanced intersystem crossing in three-spin systems.

67 ir-lifetime and the magnetic field-sensitive intersystem crossing induced by the hyperfine interactio

68 mechanism exploits spin-selective molecular intersystem crossing into pentacene's triplet ground sta

69 thiobases is intimately linked to efficient intersystem crossing into reactive triplet states, the m

70 of a zinc oxochlorin indicates the yield of intersystem crossing is >70%.

71 found that the ring strain dependent rate of intersystem crossing is the rate-limiting step in the fo

72 The high quantum yield and efficient reverse intersystem crossing leading to delayed fluorescence emi

73 ast population of the triplet state, with an intersystem crossing lifetime of 180 +/- 40 fs-the short

74 ssing lifetime of 180 +/- 40 fs-the shortest intersystem crossing lifetime of any DNA base derivative

75 t population of the triplet manifold with an intersystem crossing lifetime of hundreds of picoseconds

76 ly explain why thiobases exhibit the fastest intersystem crossing lifetimes measured to date among bi

77 The energy barrier for this reverse intersystem crossing mechanism is proportional to the ex

78 its formation from (1*)P by the radical-pair intersystem crossing mechanism.

79 olarization pattern it can be concluded that intersystem crossing occurs predominantly into in-plane

80 benzene upper singlet states, as well as the intersystem crossing of nitrobenzene.

81 restrictions on trans-cis isomerization and intersystem crossing of photo-excited A2E.

82 Triplet-exciton formation through intersystem crossing of photogenerated singlet excitons

83 Intersystem crossing of the S(1) excited state to the az

84 ation of the T1 state ((3)pipi*) in AcAc via intersystem crossing on a 1.5 +/- 0.2 ps time scale.

85 study provides an insight into dynamics and intersystem crossing pathways of low-lying singlet and t

86 onic spectra or unactivated fluorescence and intersystem crossing pathways.

87 3)[FeO2] is likely to have a relatively high intersystem crossing point (ICP) relative to 1b' + N2 to

88 being a complex mixture and its low average intersystem crossing quantum yield (PhiISC).

89 se are improved with derivatives with higher intersystem crossing quantum yields, which can be promot

90 RS) and k(CRT), respectively, as well as the intersystem crossing rate constant, k(ST).

91 ve important effects on the magnitude of the intersystem crossing rate constant, showing a 1.2-, 3.2-

92 a heavy halogen atom to further increase the intersystem crossing rate of the coupled units.

93 iments show an almost 2-fold increase in the intersystem crossing rate on going from polar aprotic to

94 A change in the intersystem crossing rate ratio due to increased dielect

95 increase of the relative value of P(x), the intersystem crossing rate to the T(x) sublevel.

96 The S1* state has a decreased intersystem crossing rate when compared to monomeric ter

97 spin-orbit coupling, which in turn enhances intersystem crossing rates in the guest molecule.

98 of (1)(PTZ(+.)-FL(n)-PDI(-.)), radical pair intersystem crossing results in formation of (3)(PTZ(+.)

99 ssion of the S-O bond which is coupled to an intersystem crossing step, thus producing the sulfide an

100 Radical pair intersystem crossing subsequently produces (3)(MeOAn(+)(

101 excited-states, dephasing time, and enhanced intersystem crossing that can also influence ET.

102 This article reports the intersystem crossing timescale (tauISC ) of the most com

103 e imine 7, which presumably is formed from 3 intersystem crossing to 7.

104 Finally, intersystem crossing to a ferromagnetically coupled Ru(I

105 -Pn(+*)-PDI(-*)) that undergoes radical pair intersystem crossing to form (3)(TIPS-Pn(+*)-PDI(-*)), w

106 OH group, and as a consequence, it undergoes intersystem crossing to form both E- and Z-3a.

107 This complex undergoes intersystem crossing to form the open-shell singlet dira

108 tau = approximately 60 ns), which undergoes intersystem crossing to form Z-3a (lambda(max) = 380 nm,

109 However, 2b only undergoes intersystem crossing to form Z-3b (lambda(max) = 380 nm,

110 lifetime (tau = 7.5 ns), and a high yield of intersystem crossing to give the triplet state (Phi isc

111 the cyclopropene product (3), and undergoes intersystem crossing to ground triplet carbene ((3)2).

112 econds at ambient temperature, after reverse intersystem crossing to singlets.

113 ,III) H(superoxo) structure, which undergoes intersystem crossing to the antiferromagnetic surface an

114 onic excitation, the quartet trimers undergo intersystem crossing to the doublet manifold, followed b

115 iton unit to the benzil, (3) benzil-centered intersystem crossing to the localized benzil triplet sta

116 ohexane, respectively, and are controlled by intersystem crossing to the lower energy triplet state.

117 he (1)npi* population is proposed to undergo intersystem crossing to the lowest triplet state in comp

118 lifetime of a few nanoseconds and undergoes intersystem crossing to the pyrene-like triplet state wi

119 reacts efficiently with oxygen and decays by intersystem crossing to the singlet surface.

120 xcited heptanal is believed to undergo rapid intersystem crossing to the triplet manifold and from th

121 ase of bromine radicals, is competitive with intersystem crossing to the triplet state of the bromina

122 r backbone to the complex where it undergoes intersystem crossing to the triplet state of the complex

123 in fluorescence unquenching, restoration of intersystem crossing to the triplet state, and singlet o

124 report that the BTz core promotes efficient intersystem crossing to the triplet state, while the pre

125 In all cases, intersystem crossing to the triplet states is not observ

126 plet oxyallyl diradicals (3)9 that decay via intersystem crossing to their more stable singlet isomer

127 The singlet absorption decays by intersystem crossing to triplet diphenylcarbene at rates

128 Upon photoexcitation, (1*)Aq undergoes rapid intersystem crossing to yield (3*)Aq, which is capable o

129 Intersystem crossing triggers a sudden increase of the v

130 8 ps) was observed in protic solvents, while intersystem crossing was observed in aprotic solvents.

131 The rate constants of singlet to triplet intersystem crossing were determined at this temperature

132 Subsequent radical pair intersystem crossing within these spin-correlated RPs le

133 n experiments have implied a tripling of the intersystem crossing yield at the onset of fission.

134 Subsequent radical pair intersystem crossing yields 3(DMJ+*-An-Phn-NI-*).

135 may substantially overestimate excited-state intersystem crossing yields, raising questions with rega

136 of the (5)MLCT (or (7)MLCT, in the event of intersystem crossing) responds to the structural modific

137 (fluorescence, radiationless relaxation, and intersystem crossing).

138 mbination of minimized aggregation, enhanced intersystem crossing, and altered excited-state lifetime

139 exciplex deactivation pathways-fluorescence, intersystem crossing, and nonradiative decay-are likely

140 yields of fluorescence, internal conversion, intersystem crossing, and singlet oxygen.

141 two unactivated processes, fluorescence and intersystem crossing, and two activated processes, trans

142 ted state suggests that internal conversion, intersystem crossing, and/or dissociation is a concern w

143 trajectory (nuclear motion, charge-transfer, intersystem crossing, etc.) dictates the availability of

144 normal routes open to the porphyrin monomer (intersystem crossing, internal conversion, fluorescence)

145 to its excited (1)B1 state followed by rapid intersystem crossing, reacts directly with water to form

146 let charge separation is more efficient than intersystem crossing, resulting in inefficient formation

147 deactivation of the excited state, including intersystem crossing, solvent quenching, and excited-sta

148 The absence of intersystem crossing, which often gives rise to large ex

149 read out through its special spin-selective intersystem crossing, while microwave electron spin reso

150 separation competes rather unfavorably with intersystem crossing--75% of all charge pairs decay into

151 let state denitrogenation and the subsequent intersystem crossing-limited product formation are slowe

152 nt molecule, in the order consistent with an intersystem crossing-related heavy atom effect.

153 r states, affording new insight into reverse intersystem crossing.

154 s to why Q(1) does not spontaneously undergo intersystem crossing.

155 of NN*, which only accelerates radical pair intersystem crossing.

156 data are consistent with heavy-atom assisted intersystem crossing.

157 twisted styrenes undergo exceptionally rapid intersystem crossing.

158 antly via relatively rapid, weakly activated intersystem crossing.

159 in this complex, resulting in less efficient intersystem crossing.

160 inglet state over the triplet state enabling intersystem crossing.

161 " state to be a triplet dark state formed by intersystem crossing.

162 neling, on the triplet manifold, followed by intersystem crossing.

163 units, implying a change of the mechanism of intersystem crossing.

164 stems, notably a new channel, intermolecular intersystem crossing.

165 pulation and spin addressability through the intersystem crossing.

166 ls in an NV center that does not rely on its intersystem crossing.

167 generation of (3*)PDI by spin-orbit-induced intersystem crossing.

168 te into the reactive triplet excited states (intersystem crossing: ISC) and/or to the radical-anion (

169 ited-state reactions: harvesting product via intersystem crossing; photoisomerizations; bond-breaking

170 ong spin-orbit coupling for highly efficient intersystem-crossing S1 --> Tn and phosphorescence T1 --