All-Fullerene Electron Donor-Acceptor Conjugates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F19%3A00508569" target="_blank" >RIV/61388963:_____/19:00508569 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201901863" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201901863</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/anie.201901863" target="_blank" >10.1002/anie.201901863</a>

Jazyk výsledku

angličtina

Název v původním jazyce

All-Fullerene Electron Donor-Acceptor Conjugates

Popis výsledku v původním jazyce

The synthesis and characterization of a covalent all-fullerene C-60-Lu3N@I-h-C-80 electron donor-acceptor conjugate has been realized by sequential 1,3-dipolar cycloaddition reactions of azomethine ylides on Lu3N@I-h-C-80 and C-60. To the best of our knowledge, this is the first time that two fullerenes behaving as both electron donor (Lu3N@I-h-C-80) and acceptor (C-60) are forming an electroactive dumbbell. DFT calculations reveal up to 16 diastereomeric pairs, that is, 8 with syn and 8 with anti orientation, with the anti-RSSS isomer being the most stable. Spectroelectrochemical absorption and femtosecond transient absorption experiments support the notion that a C-60(.-)-Lu3N@I-h-C-80(.+) charge-separated state is formed. Spin conversion from the charge-separated singlet state C-60(.-)-Lu3N@I-h-C-80(.+) into the corresponding triplet state is facilitated by the heavy-atom effect stemming from the Lu3N-cluster, which, in turn, slows down the charge recombination by one order of magnitude.

Název v anglickém jazyce

All-Fullerene Electron Donor-Acceptor Conjugates

Popis výsledku anglicky

The synthesis and characterization of a covalent all-fullerene C-60-Lu3N@I-h-C-80 electron donor-acceptor conjugate has been realized by sequential 1,3-dipolar cycloaddition reactions of azomethine ylides on Lu3N@I-h-C-80 and C-60. To the best of our knowledge, this is the first time that two fullerenes behaving as both electron donor (Lu3N@I-h-C-80) and acceptor (C-60) are forming an electroactive dumbbell. DFT calculations reveal up to 16 diastereomeric pairs, that is, 8 with syn and 8 with anti orientation, with the anti-RSSS isomer being the most stable. Spectroelectrochemical absorption and femtosecond transient absorption experiments support the notion that a C-60(.-)-Lu3N@I-h-C-80(.+) charge-separated state is formed. Spin conversion from the charge-separated singlet state C-60(.-)-Lu3N@I-h-C-80(.+) into the corresponding triplet state is facilitated by the heavy-atom effect stemming from the Lu3N-cluster, which, in turn, slows down the charge recombination by one order of magnitude.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Angewandte Chemie - International Edition

ISSN

1433-7851

e-ISSN

—

Svazek periodika

58

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

6932-6937

Kód UT WoS článku

000476423300015

EID výsledku v databázi Scopus

2-s2.0-85063347152