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3 ition and the reaction energetics creates an intersystem barrier and is responsible for slowness of t
4 nsisted of 32 (68%) intrasystem and 15 (32%) intersystem clusters and had fewer SNP differences than
10 n insertion into a Ta-N bond in 1 through an intersystem conversion from triplet to singlet energy su
13 tane intermediate in as short as 3 ps, which intersystem crosses to its ground state and rearranges t
14 ween singlets (1)nn* (1)nn* (85 fs), (ii) an intersystem crossing (1)nn* (3)nn* (2.0 ps), and (iii) a
15 small (below 3760 cm(-1)), the S(1) -> T(1) intersystem crossing (and its reverse, S(1) <- T(1)) mec
17 e that (6,5) SWNTs exhibit rapid S(1)-->T(1) intersystem crossing (ISC) (tau(ISC) ~20 ps), a sharp T(
18 complexes is often quenched due to ultrafast intersystem crossing (ISC) and cooling into a dark metal
19 h stimuli-responsive reversible switching of intersystem crossing (ISC) are highly promising for smar
20 iguration torsion and significantly enhanced intersystem crossing (ISC) compared to the parent dyad.
21 ocesses in organic chromophores, analysis of intersystem crossing (ISC) dynamics has received immense
22 hat exhibit extremely efficient photoinduced intersystem crossing (ISC) dynamics into the lowest-ener
23 is to generate the singlet nitrenium ion and intersystem crossing (ISC) followed by a spontaneous het
25 in-orbit (SO) interaction and focused on the intersystem crossing (ISC) from the first excited single
26 n-orbit coupling (SOC), and thus facilitates intersystem crossing (ISC) from the singlet to triplet m
27 e channel, a submerged barrier to insertion, intersystem crossing (ISC) from the triplet to the singl
28 ugh effective tuning of triplet formation by intersystem crossing (ISC) has been well established in
30 he excitonic center of mass, singlet-triplet intersystem crossing (ISC) in such assemblies is inhibit
31 ossibility of the faster energy transfer via intersystem crossing (ISC) in the metalated derivatives
32 ts are rationalized in terms of the rates of intersystem crossing (ISC) in the newly formed geminate
33 a carbene) a slow rate of singlet to triplet intersystem crossing (isc) in this solvent because the o
34 1G*) of the unsubstituted tolane showed that intersystem crossing (ISC) is favored with large spin-or
39 fetime is shorter than the time required for intersystem crossing (ISC) of the triplet radical pair t
41 Its temperature-independent and activated intersystem crossing (ISC) pathways are at least 18 and
42 th NIR absorptivity up to 850 nm, near-unity intersystem crossing (ISC) quantum yields (PhiISC), and
43 tion study, the S(1)(npai*) -> T(1)(paipai*) intersystem crossing (ISC) rate is > 10(12) s(-1), resul
44 ating solvents on singlet-to-triplet carbene intersystem crossing (ISC) rates has been studied with d
45 rature remains a major challenge due to slow intersystem crossing (ISC) rates in combination with eff
46 ng with ground-state reactants is avoided by intersystem crossing (ISC) to a different spin state wit
47 t singlet state S1 that undergoes picosecond intersystem crossing (ISC) to the lowest triplet T1.
50 e analysis reveals the key role of ultrafast intersystem crossing (ISC) to triplet states in modulati
51 ions; (iii) it enhances the quantum yield of intersystem crossing (ISC), i.e., it is capable of sensi
53 other critical factor affecting the rate of intersystem crossing (ISC)--singlet-triplet energy separ
59 zBN core leads to an acceleration of reverse intersystem crossing (k(RISC)) without sacrificing eithe
61 dies, with the direct observation of reverse intersystem crossing (RISC) and reverse internal convers
62 tophysics typically suffer from slow reverse intersystem crossing (RISC) because of their relatively
63 at cryogenic temperatures, where the reverse intersystem crossing (RISC) from triplet to singlet exci
64 ( E(ST)) is necessary for efficient reverse intersystem crossing (rISC) in delayed fluorescence (DF)
65 We have proposed a model to describe reverse intersystem crossing (rISC) in donor-acceptor charge tra
67 rt that redox-active ligands enhance reverse intersystem crossing (RISC) of Cu(4) I(4) cluster for tr
68 iplet excitons into singlets through reverse intersystem crossing (RISC) rival the efficiencies of ph
70 )P-NI(-*)), which undergo rapid radical pair intersystem crossing (RP-ISC) to produce the triplet RPs
71 econd time scale is mediated by radical pair intersystem crossing (RP-ISC), as evidenced by the obser
72 stem and the reaction kinetics; and (iv) the intersystem crossing also becomes strongly affected, mak
73 ents for conversion to diradical 16 prior to intersystem crossing and beta scission to form the phosp
75 +/- 1 kcal/mol) and decay predominantly via intersystem crossing and fluorescence at room temperatur
76 al that (1*)PDI undergoes ultrafast enhanced intersystem crossing and internal conversion with tau ap
77 e optimal molecular properties for (reverse) intersystem crossing and long-lived triplet states in a
79 etermined by relative rates of the competing intersystem crossing and reverse electron transfer proce
80 cy vibrations which participate in ultrafast intersystem crossing and subsequent relaxation of a phot
81 ess provided an unprecedented enhancement of intersystem crossing and subsequent switching to the pho
82 leads to highly efficient singlet-to-triplet intersystem crossing and suppression of nonradiative ene
83 e pairs are shown to be subject to efficient intersystem crossing and terminally recombine into F8BT
84 the silyl group tuned the triplet to singlet intersystem crossing and the electrophilicity) and on th
86 processes due to the internal conversion and intersystem crossing at the Franck-Condon state geometry
87 iplet fusion at NPB sites not E-type reverse intersystem crossing because of the presence of the NPB
88 lated by a single electron spin flip and the intersystem crossing becomes inhibited, as indicated by
90 ite isolation of porphyrin ligands, enhanced intersystem crossing by heavy Hf centers, and facile (1)
91 hermore, it is demonstrated that the rate of intersystem crossing can be substantially enhanced in th
92 ed, either photoinduced electron transfer or intersystem crossing compete successfully with the ring-
93 between ground electronic state recovery and intersystem crossing controls triplet state populations
94 As such, a fairly efficient radical ion pair intersystem crossing converts the initially formed singl
96 n in GQ-1 is slowed by enhanced radical-pair intersystem crossing driven by the greater number of hyp
98 ., (silox)3M + ole) where M = Nb, leading to intersystem crossing events that facilitate dissociation
99 let states of the molecules make the reverse intersystem crossing feasible at room temperature even i
100 tates, which undergo subsequent radical pair intersystem crossing followed by charge recombination to
102 p for charge recombination from radical pair intersystem crossing for n < 4 to coherent superexchange
103 distributions, branching ratios and role of intersystem crossing for the multichannel, addition-elim
104 t state of the myoglobin ((3)MMb) created by intersystem crossing from (1)MMb likewise undergoes redu
105 econd ground-state recovery pathway involves intersystem crossing from a region of the S(1) surface w
107 Carlo simulations, support the mechanism of intersystem crossing from excited spin-singlet states, w
108 states allows us to disentangle the rate of intersystem crossing from other closely associated excit
109 he C-N bond-breaking occurring on T(1) after intersystem crossing from S(1), and a third group argued
110 vibrationally hot S(0) of 1 forms 2, whereas intersystem crossing from S(1K) to T(1K) results in 3.
111 y dipolar interaction-induced enhancement of intersystem crossing from singlet to triplet excited sta
112 iplet-state SO2 ( (3)B1), which results from intersystem crossing from the excited singlet ( (1)A2/ (
113 ations for (3)DOM* were enhanced, suggesting intersystem crossing from the singlet state to the tripl
115 de is formed through rapid ring closure upon intersystem crossing from the triplet to the singlet gro
117 is achieved by spin-selective excited-state intersystem crossing from the |T(+)> and |T(-)> sublevel
120 first-row elements undergo unexpectedly fast intersystem crossing in a few tens of picoseconds and a
121 the charge transfer dynamics and the rate of intersystem crossing in metallacycles of different geome
122 ls of spin polarization readily generated by intersystem crossing in photo-excited pentacene and othe
123 et excited state and then triplet-to-singlet intersystem crossing in the nascent geminate radical pai
127 ir-lifetime and the magnetic field-sensitive intersystem crossing induced by the hyperfine interactio
128 ived triplets are produced through classical intersystem crossing instead of (1)(TT) dissociation, wi
129 mechanism exploits spin-selective molecular intersystem crossing into pentacene's triplet ground sta
130 thiobases is intimately linked to efficient intersystem crossing into reactive triplet states, the m
134 found that the ring strain dependent rate of intersystem crossing is the rate-limiting step in the fo
135 The high quantum yield and efficient reverse intersystem crossing leading to delayed fluorescence emi
136 plet excited state to yield a 1,4-diradical; intersystem crossing leads preferentially to the closed
138 ast population of the triplet state, with an intersystem crossing lifetime of 180 +/- 40 fs-the short
139 ssing lifetime of 180 +/- 40 fs-the shortest intersystem crossing lifetime of any DNA base derivative
140 t population of the triplet manifold with an intersystem crossing lifetime of hundreds of picoseconds
141 ly explain why thiobases exhibit the fastest intersystem crossing lifetimes measured to date among bi
142 Here we present evidence for a different intersystem crossing mechanism in the bimolecular reacti
145 branching fractions-in terms of an efficient intersystem crossing occurring before the high entrance
146 b initio calculations suggest, instead, that intersystem crossing occurs in the exit-channel region d
147 olarization pattern it can be concluded that intersystem crossing occurs predominantly into in-plane
153 ation of the T1 state ((3)pipi*) in AcAc via intersystem crossing on a 1.5 +/- 0.2 ps time scale.
154 ible (a) by direct excitation and subsequent intersystem crossing or (b) by energy transfer from an a
156 nergy barriers of the stepwise manner in the intersystem crossing pathway showed a more favorable pat
157 study provides an insight into dynamics and intersystem crossing pathways of low-lying singlet and t
161 3)[FeO2] is likely to have a relatively high intersystem crossing point (ICP) relative to 1b' + N2 to
163 e of optical transitions and triplet-singlet intersystem crossing processes for fingerprinting these
165 se are improved with derivatives with higher intersystem crossing quantum yields, which can be promot
167 ve important effects on the magnitude of the intersystem crossing rate constant, showing a 1.2-, 3.2-
169 iments show an almost 2-fold increase in the intersystem crossing rate on going from polar aprotic to
173 such a motif still suffers from low reverse intersystem crossing rates (k(RISC) ) with emission peak
174 )nn*-(3)nn* energy gap is reduced, increased intersystem crossing rates are expected, resulting in hi
176 of different spin and therefore compute the intersystem crossing rates with a multireference method,
179 of (1)(PTZ(+.)-FL(n)-PDI(-.)), radical pair intersystem crossing results in formation of (3)(PTZ(+.)
180 a structure that increases the excited-state intersystem crossing spin selectivity while reducing the
181 ssion of the S-O bond which is coupled to an intersystem crossing step, thus producing the sulfide an
185 ion binding are responsible for the enhanced intersystem crossing that populates the triplet state an
190 s localized on the C=C-N moiety; decaying by intersystem crossing to 2, which is more stable owing to
193 on of a singlet charge transfer state, while intersystem crossing to a local triplet state is facilit
195 ation of the acyl azolium followed by facile intersystem crossing to access triplet diradical species
197 -Pn(+*)-PDI(-*)) that undergoes radical pair intersystem crossing to form (3)(TIPS-Pn(+*)-PDI(-*)), w
200 tau = approximately 60 ns), which undergoes intersystem crossing to form Z-3a (lambda(max) = 380 nm,
202 tion proceeds via spin-orbit charge-transfer intersystem crossing to generate (3*)NDI, followed by sp
203 lifetime (tau = 7.5 ns), and a high yield of intersystem crossing to give the triplet state (Phi isc
204 the cyclopropene product (3), and undergoes intersystem crossing to ground triplet carbene ((3)2).
205 hanges in orbital symmetry were required for intersystem crossing to occur in organic compounds.
206 -d(16) results in ultrafast radical-enhanced intersystem crossing to produce a quartet state (Q) foll
208 *+)-NN exchange allows for exchange-enhanced intersystem crossing to the (3)T(1a) state, which posses
209 ,III) H(superoxo) structure, which undergoes intersystem crossing to the antiferromagnetic surface an
210 onic excitation, the quartet trimers undergo intersystem crossing to the doublet manifold, followed b
211 iton unit to the benzil, (3) benzil-centered intersystem crossing to the localized benzil triplet sta
212 ohexane, respectively, and are controlled by intersystem crossing to the lower energy triplet state.
213 transient absorption revealed that efficient intersystem crossing to the lowest excited triplet state
214 he (1)npi* population is proposed to undergo intersystem crossing to the lowest triplet state in comp
215 lifetime of a few nanoseconds and undergoes intersystem crossing to the pyrene-like triplet state wi
217 imentally and computationally, suggesting an intersystem crossing to the triplet excited state with s
218 key structural pathways provide evidence for intersystem crossing to the triplet ground state of Fe(C
219 onversion to the S(0) state (~40%) and rapid intersystem crossing to the triplet manifold (~60%).
220 xcited heptanal is believed to undergo rapid intersystem crossing to the triplet manifold and from th
221 ase of bromine radicals, is competitive with intersystem crossing to the triplet state of the bromina
222 r backbone to the complex where it undergoes intersystem crossing to the triplet state of the complex
223 in fluorescence unquenching, restoration of intersystem crossing to the triplet state, and singlet o
224 report that the BTz core promotes efficient intersystem crossing to the triplet state, while the pre
227 plet oxyallyl diradicals (3)9 that decay via intersystem crossing to their more stable singlet isomer
229 Upon photoexcitation, (1*)Aq undergoes rapid intersystem crossing to yield (3*)Aq, which is capable o
231 f proton transfer is faster than the rate of intersystem crossing unless the biradicals contain heavy
232 8 ps) was observed in protic solvents, while intersystem crossing was observed in aprotic solvents.
233 The rate constants of singlet to triplet intersystem crossing were determined at this temperature
234 ome of which convert to triplet excitons via intersystem crossing when coordinated to the LnNPs.
235 inglets through spin-selective excited-state intersystem crossing with 80% selectivity from |T(+)> an
236 n the reaction and direct radical chemistry (intersystem crossing with triplet O(2)) does not seem to
237 suggest that the low rate of triplet-singlet intersystem crossing within the manifold of states of th
239 these molecules is strong enough to suppress intersystem crossing yet weak enough to prevent the form
240 n experiments have implied a tripling of the intersystem crossing yield at the onset of fission.
242 may substantially overestimate excited-state intersystem crossing yields, raising questions with rega
243 of the (5)MLCT (or (7)MLCT, in the event of intersystem crossing) responds to the structural modific
245 o so much more slowly, due to an inefficient intersystem crossing, an endothermic 1,5-hydrogen atom t
246 mbination of minimized aggregation, enhanced intersystem crossing, and altered excited-state lifetime
247 exciplex deactivation pathways-fluorescence, intersystem crossing, and nonradiative decay-are likely
248 transfer to an imine triplet excited state, intersystem crossing, and radical recombination, with ph
250 two unactivated processes, fluorescence and intersystem crossing, and two activated processes, trans
251 ted state suggests that internal conversion, intersystem crossing, and/or dissociation is a concern w
252 tion of a charge-separated state followed by intersystem crossing, complemented with excimer formatio
253 trajectory (nuclear motion, charge-transfer, intersystem crossing, etc.) dictates the availability of
254 normal routes open to the porphyrin monomer (intersystem crossing, internal conversion, fluorescence)
255 acilitates energy transfer processes such as intersystem crossing, quantum decoherence, and magnetic
256 revealed that the reaction is controlled by intersystem crossing, rather than potential barriers.
257 to its excited (1)B1 state followed by rapid intersystem crossing, reacts directly with water to form
258 let charge separation is more efficient than intersystem crossing, resulting in inefficient formation
259 deactivation of the excited state, including intersystem crossing, solvent quenching, and excited-sta
260 formed through SF demonstrate that enhanced intersystem crossing, that is, spin catalysis, is a wide
261 iplet 1,3-diradical intermediate that, after intersystem crossing, undergoes ring-closing to form the
263 Our study also highlights the importance of intersystem crossing, which provides an opportunity to a
264 read out through its special spin-selective intersystem crossing, while microwave electron spin reso
265 separation competes rather unfavorably with intersystem crossing--75% of all charge pairs decay into
266 let state denitrogenation and the subsequent intersystem crossing-limited product formation are slowe
296 te into the reactive triplet excited states (intersystem crossing: ISC) and/or to the radical-anion (
297 ited-state reactions: harvesting product via intersystem crossing; photoisomerizations; bond-breaking
298 ong spin-orbit coupling for highly efficient intersystem-crossing S1 --> Tn and phosphorescence T1 --
299 y in inducing efficient spin-orbit-coupling, intersystem-crossing, and consequently a high triplet po