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Journal : Makara Journal of Science

Assisted Surface-state Recombination of Orange-peel Carbon Nanodots in Various Matrices Fatimah, Siti; Isnaeni, Isnaeni; Tahir, Dahlang
Makara Journal of Science Vol. 22, No. 1
Publisher : UI Scholars Hub

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Abstract

The contentious origin of the luminescence of carbon nanodots (CDs) has attracted considerable attention. In this work, we synthesized CDs from orange peel by using a microwave-assisted technique. We investigated the optical properties of the synthesized CDs. Moreover, we studied the effect of matrix addition on the optical properties of CDs. We found that matrix addition significantly influences the absorbance and photoluminescence of CDs. Shifts in absorbance peak intensity and emission peak wavelength indicated that the bonding of matrix molecules on the surfaces of the CDs has changed the structures of CDs. This finding is supported by the extended half-life of CDs after matrix addition. Our results will expand researchon the use of CDs as phosphorescent materials.
Optical Properties of Toluene-soluble Carbon Dots Prepared from Laser-ablated Coconut Fiber Isnaeni, Isnaeni; Suliyanti, Maria Margaretha; Shiddiq, Muhandis; Sambudi, Nonny Soraya
Makara Journal of Science Vol. 23, No. 4
Publisher : UI Scholars Hub

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Abstract

In this study, we used laser ablation to fabricate toluene-soluble carbon nanoparticles from coconut fiber. In response to excitations at various wavelengths, the fabricated carbon nanoparticles exhibit three distinctive emission peaks at wavelengths of 300 nm, 440 nm, and 540 nm. These three emission peaks correspond to the  orbital state,  orbital state, and surface state, respectively. Photoluminescence excitation measurements indicate a high probability of energy transfer between the surface state and  orbital state, whereas the  orbital state is likely independent of the other states. The results of time-resolved photoluminescence measurements indicate that electrons are likely to remain longer in higher-energy states. Given that the carbon dots fabricated in this study were made from natural resources, these findings may find application in photonic devices that feature tunable emissions.
Co-Authors Abdilah, Rafik Abdillah, Roby Abdul Hamid Achmad Basori, Achmad Achmad Faqihuddin Achmad Toto Poernomo Adha Kurnianti Adi Fadli Adillah, Rifda Agung Rinaldy Malik Ahmad, Faozan Akhiruddin Maddu Alaih, Akhmad Futukhillah Fataba Ali Amran Ali Imran Alvina Violita Mulyanto Putri Alya Fakhirah Aminullah Aminullah, Aminullah Andhika Prima Prasetyo Andi Abdul Hamzah, Andi Abdul Anida Zulfa, Baiq Annisa Kartika Sari Anwar, Nazwa Zahira Ardiana, Alma Dita Ari Asnani As'ary, Muawwal Al Asiandi Asiandi, Asiandi Asri Darmawati AT, Poernomo Aty Widyawaruyanti Aulya Farah Fahreza Ayumuyas, Nur Palestin Ayuni, Nur Azizah, Mir’ah Azka, Aril Danish Azmi, Vania Amelia Azzahra, Chofifatus Solecha Azzalia Firdanthi Basyaruddin, Muh Budi Utomo Calvina, Aisha Bella Cassia, Diva Cholisoh, Lilis Dadan Hermawan, Dadan Dahlang Tahir Danish Aulia S.N Debi Yustisia, Wa Ode Deni Shidqi Khaerudini Deski Beri Dessidianti, Rachma Dewi Isadiartuti DHARMA S., BAGUS WIDHI Dinda Annisya, Sukma Diyah, Nuzul Wahyuning Djoko Agus Purwanto Eddy Bagus Wasito Elfinita, Revi Elly Arliani Esti Hendradi Etik Wahyuningsih Fajarli Apriani M, Baiq Faradillah Rusliana Febrianti, Suhaemi Firna, Firna Fitri, Andi Fitri Geminastiti Sakkir H Hasmawati Hadi Poerwono Hadi, M. Warisul Haerunisa, Haerunisa Hakimi, Ahmad Reza Hamid, Muhammadin Hanistya, Ria Hardhienata, Hendradi Haryanto, Sulaeman hasani, riadhatul Hendrawan Hendrawan Heri Retnawati Hidayat, M. Taufid Hidayat, Rabiyatun Hidayati, Shabrina Wahyu I Gede Rekyadji Arimbawa Ibrahim, Mohamad Thorik Idha Kusumawati Ikhza Wafiyah, Evelyna Ikmawati, Isna Intan Shofiyyatul L Isnasari, Wiriyanti Istanti, Lilis Ita Sarmita Samad, Ita Sarmita Iwan Sugihartono Iyon Titok Sugiarto Julham Hukom Juliansyah, Irgi Zaini Kamaruddin, Harni Sartika Kana Hidayati Kartuti Debora, Kartuti Khairunnisa, Ayu Kholis Amalia Nofianti Kristianti, Rayi Kurnijasanti, R Larasati, Rini Lestari Widiantika, Susi Lestari, Ismira Wahyu Lewa, Ismira Wahyu Lestari Lisdayanti, Nur Lucky Anugrah, Riska Mahmudah, Rifaatul Mannahali, Misnah Maria Margaretha Suliyanti Martila, Lenny Intan Masmira, Ade Meiliningtyas, Crysuci Miladya, Nanda Fadlilatul Mirzautika, Anggita Mohar, Rahmat Setiawan Muhamad Yamin Muhammad Pramudya Pangestu Mukarromah, Nur Mulyawan, Reynaldi Gilang Muzakky, Fuad Nafa Nazilatul Fatihah Naura Tahta R Nawal Karina B Ni Made Mertaniasih Nisa, Asriatun Nurhasanah, Wahidatun Dewi Nurhayati Nurhayati Nurrahmayani, Nurrahmayani Nurrosyidah, Iif Hanifa Nursalam Nursalam Nursidik Yulianto Nursidik Yulianto, Nursidik Nuryamin Nuryamin, Nuryamin Oktaviany Irma Wiputri Oudrey Addriana Paramita, Diajeng Putri Paramitha, Pradnia Permono Adi Putro Putri Dinatul M Putri, Syakirah Yasmin R., Mantasiah Rahman Rahman Ramdani, Dewi Reliani Reliani, Reliani Rippi Maya Riyaningrum, Wahyu Romadhon, Fajar Rusita, Resi Saleh, Nurming Sambudi, Nonny Soraya Samlan, Karima Santosa, Nadya Rachmania Sari, Dewi Lintang Shiddiq, Muhandis Sholihattri, Wina Sholika Sari, Trisiyana Sigit Wibawanto, Sigit Siti Fatimah Soewoto, Haswi Purwandanu Sry Wahyuni SRY WAHYUNI, SRY Suaebah, Evi Sudjarwo, SA Sudrajat, Aji Ajat Sugiarto, Iyon Titok Sukmawati, Rosnanda Sulaeman, Uyi Supatmi Supatmi Suryadi Suryadi Suryadini, Aisha Suci Susanto, I Gede Arya Sutarno Sutarno Talitha Nabilla Wijayanata Taufik Taufik Tejo Faridh Waloyo Tiam, Tan Swee Tiana, Elia Marta Triyono, Djoko Tulus Ikhsan Nasution Tutiek Purwanti Ulfa, Syarifatul Umi Aida Rohma Utami, Mega Putri Nur Wahyudi Wahyudi Wahyudi, Muh.Diki Wijoyo, Hadi Wildan Panji Tresna Winardi, Agus Wiwied Ekasari Yin, Shu Yuliati Herbani ZAINUL ARIFIN IMAM SUPARDI Zaskya Wati, Wa Ode Zulfa Diana Zulfiana, Risa