| Autor: |
Inhwan Oh, Hosoowi Lee, Tae Wu Kim, Chang Woo Kim, Sunhong Jun, Changwon Kim, Eun Hyuk Choi, Young Min Rhee, Jeongho Kim, Woo‐Dong Jang, Hyotcherl Ihee |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Advanced Science, Vol 7, Iss 20, Pp n/a-n/a (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2198-3844 |
| DOI: |
10.1002/advs.202001623 |
| Popis: |
Abstract Multichromophore systems (MCSs) are envisioned as building blocks of molecular optoelectronic devices. While it is important to understand the characteristics of energy transfer in MCSs, the effect of multiple donors on energy transfer has not been understood completely, mainly due to the lack of a platform to investigate such an effect systematically. Here, a systematic study on how the number of donors (nD) and interchromophore distances affect the efficiency of energy transfer (ηFRET) is presented. Specifically, ηFRET is calculated for a series of model MCSs using simulations, a series of multiporphyrin dendrimers with systematic variation of nD and interdonor distances is synthesized, and ηFRETs of those dendrimers using transient absorption spectroscopy are measured. The simulations predict ηFRET in the multiporphyrin dendrimers well. In particular, it is found that ηFRET is enhanced by donor‐to‐donor energy transfer only when structural heterogeneity exists in an MCS, and the relationships between the ηFRET enhancement and the structural parameters of the MCS are revealed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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